id stringlengths 40 40 | instruction stringlengths 68 308 | input stringlengths 17 33.4k | output stringlengths 100 30k |
|---|---|---|---|
5ff232d31106f45ac87c3b64e1d35a0667777797 | Analyze and fix the following issue in the Linux kernel code: ima: fix out-of-bounds read in xattr_verify() | Problem Details:
The digest-length check in xattr_verify() mixes int and size_t:
if (xattr_len - sizeof(xattr_value->type) - hash_start >=
iint->ima_hash->length)
sizeof() yields size_t, so the usual arithmetic conversions promote
the whole left-hand side to unsigned 64-bit before the subtraction
runs. For a trun... | ```diff
diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c
index 18d0d9154317..ced2e131b061 100644
--- a/security/integrity/ima/ima_appraise.c
+++ b/security/integrity/ima/ima_appraise.c
@@ -274,8 +274,13 @@ static int xattr_verify(enum ima_hooks func, struct ima_iint_cache *iint... |
6d4514ca9cdf61fec4ec634cf50386f6f7e69748 | Analyze and fix the following issue in the Linux kernel code: futex: Prevent robust futex exit race some more | Problem Details:
A robust futex unlock stores 0 over the whole futex value - wiping
FUTEX_WAITERS - and wakes a single waiter. That wakeup is a one-shot
notification: the protocol relies on its recipient to either acquire the
futex (and eventually unlock while aware of the remaining contention) or
re-arm FUTEX_WAITERS ... | ```diff
diff --git a/kernel/futex/core.c b/kernel/futex/core.c
index 179b26e9c934..2650d1e52803 100644
--- a/kernel/futex/core.c
+++ b/kernel/futex/core.c
@@ -982,8 +982,11 @@ retry:
return -1;
/*
- * Special case for regular (non PI) futexes. The unlock path in
- * user space has two race scenarios:
+ * Spec... |
260b20d9b78bf002f89088fb62d60e8dee98f6f8 | Analyze and fix the following issue in the Linux kernel code: ring-buffer: Fix subbuf_ids memory leak in rb_allocate_cpu_buffer() error path | Problem Details:
In rb_allocate_cpu_buffer(), cpu_buffer->subbuf_ids is allocated using
kcalloc() when buffer->remote is non-NULL. If a subsequent page allocation
fails (e.g., ring_buffer_desc_page() returns NULL or rb_allocate_pages()
fails), execution jumps to fail_free_reader.
While __free(kfree) automatically free... | ```diff
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 78d3875a47a5..8e2485bb3aa8 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -2599,6 +2599,7 @@ rb_allocate_cpu_buffer(struct trace_buffer *buffer, long nr_pages, int cpu)
return_ptr(cpu_buffer);
fail_free... |
72e3b0311aa90568a4b42a64445d1d3e1dc5a34d | Analyze and fix the following issue in the Linux kernel code: mshv: Publish VP to pt_vp_array before installing the file descriptor | Problem Details:
mshv_partition_ioctl_create_vp() called anon_inode_getfd() before
publishing the new VP into partition->pt_vp_array. anon_inode_getfd()
includes fd_install(), so the fd was live in current->files before the
publish ran.
A concurrent MSHV_RUN_VP ioctl on that fd does not serialise against the
in-progr... | ```diff
diff --git a/drivers/hv/mshv_root_main.c b/drivers/hv/mshv_root_main.c
index 8a15448e2ace..cc2cfce2aefd 100644
--- a/drivers/hv/mshv_root_main.c
+++ b/drivers/hv/mshv_root_main.c
@@ -1072,6 +1072,8 @@ mshv_partition_ioctl_create_vp(struct mshv_partition *partition,
struct mshv_vp *vp;
struct page *intercept... |
b098dc869219c15dc49bf9cf63fb5fc1481d3373 | Analyze and fix the following issue in the Linux kernel code: mshv: Order pt_vp_array publish against irqfd assertion path | Problem Details:
mshv_partition_ioctl_create_vp() initialises a VP struct (allocations,
mutex_init, init_waitqueue_head, page mappings) and then publishes the
pointer into partition->pt_vp_array. Several ISR paths read this array
locklessly: the intercept ISR, the two scheduler ISRs, and
mshv_try_assert_irq_fast() on ... | ```diff
diff --git a/drivers/hv/mshv_eventfd.c b/drivers/hv/mshv_eventfd.c
index 047e5bd43238..06aef99c8298 100644
--- a/drivers/hv/mshv_eventfd.c
+++ b/drivers/hv/mshv_eventfd.c
@@ -169,7 +169,14 @@ static int mshv_try_assert_irq_fast(struct mshv_irqfd *irqfd)
return -EOPNOTSUPP;
#endif
- vp = partition->pt_vp_a... |
f546be6a19d24d02be576d8617cb26c7acb61594 | Analyze and fix the following issue in the Linux kernel code: mshv: Fix missing error code on VP allocation failure | Problem Details:
In mshv_partition_ioctl_create_vp(), when kzalloc for the VP struct
fails, the code jumps to the cleanup path without setting ret. At that
point ret is 0 from the preceding successful mshv_vp_stats_map() call,
so the function returns success to userspace despite having failed to
create the VP. No fd is... | ```diff
diff --git a/drivers/hv/mshv_root_main.c b/drivers/hv/mshv_root_main.c
index 146726cc4e9b..644f9b10cbba 100644
--- a/drivers/hv/mshv_root_main.c
+++ b/drivers/hv/mshv_root_main.c
@@ -1117,8 +1117,10 @@ mshv_partition_ioctl_create_vp(struct mshv_partition *partition,
goto unmap_ghcb_page;
vp = kzalloc_obj... |
0289a67cd70bf9d3807e289f4efd643e16a6c6b4 | Analyze and fix the following issue in the Linux kernel code: mshv: Fix level-triggered check on uninitialized data | Problem Details:
In mshv_irqfd_assign(), the level-triggered validation for resample
irqfds checks irqfd_lapic_irq.lapic_control.level_triggered before
mshv_irqfd_update() has populated the field. Since the irqfd struct is
zero-allocated, level_triggered is always 0 at that point, causing the
check to always reject res... | ```diff
diff --git a/drivers/hv/mshv_eventfd.c b/drivers/hv/mshv_eventfd.c
index 5995a62aff8d..047e5bd43238 100644
--- a/drivers/hv/mshv_eventfd.c
+++ b/drivers/hv/mshv_eventfd.c
@@ -473,6 +473,19 @@ static int mshv_irqfd_assign(struct mshv_partition *pt,
init_poll_funcptr(&irqfd->irqfd_polltbl, mshv_irqfd_queue_proc... |
0762262ac3e70f65b3bb843fe892f8bac1562d08 | Analyze and fix the following issue in the Linux kernel code: mshv: Fix race in mshv_irqfd_deassign | Problem Details:
mshv_irqfd_deactivate() and the hlist traversal of pt_irqfds_list
require pt->pt_irqfds_lock to be held, but mshv_irqfd_deassign()
omits it. This races with the EPOLLHUP path in mshv_irqfd_wakeup(),
which does take the lock before calling mshv_irqfd_deactivate().
Additionally, mshv_irqfd_deactivate() ... | ```diff
diff --git a/drivers/hv/mshv_eventfd.c b/drivers/hv/mshv_eventfd.c
index 90959f639dc3..5995a62aff8d 100644
--- a/drivers/hv/mshv_eventfd.c
+++ b/drivers/hv/mshv_eventfd.c
@@ -284,7 +284,7 @@ static void mshv_irqfd_deactivate(struct mshv_irqfd *irqfd)
if (!mshv_irqfd_is_active(irqfd))
return;
- hlist_del(... |
e053b624f5d36669756990743346157be9f68c34 | Analyze and fix the following issue in the Linux kernel code: NFSv4.2: fix nfs4_listxattr size accounting | Problem Details:
A call to listxattr() with a buffer size of 0 returns the actual
size of the buffer needed for a subsequent call. On an NFSv4.2
mount this triggers the following oops:
[ 399.768687] BUG: kernel NULL pointer dereference, address: 0000000000000000
[ 399.768705] RIP: 0010:_copy_from_pages+0x44/0xe0... | ```diff
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 7d98e9a98580..5709c6fea85b 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -10596,7 +10596,8 @@ const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
static ssize_t nfs4_listxattr(struct dentry *dentry, char *list, size_t size)
{
ssize... |
7f40b346462f563a0d6e841a77b5163d2a882a04 | Analyze and fix the following issue in the Linux kernel code: s390/dasd: Fix undersized format-check buffer | Problem Details:
fmt_buffer_size in dasd_eckd_check_device_format() is declared as
int, even though one of the multiplicands, sizeof(struct eckd_count),
is a size_t. The expression
trkcount * rpt_max * sizeof(struct eckd_count)
is therefore correctly evaluated at 64-bit width, but the result is
silently truncated... | ```diff
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 74fe73b5738a..d356a9f8f016 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -20,6 +20,7 @@
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include <linux/io.h>
+#include <linux/overfl... |
9973026f572db6b67570cadc30942f3014e41079 | Analyze and fix the following issue in the Linux kernel code: s390/dasd: Fix potential NULL pointer dereference | Problem Details:
dasd_release_space() checks the implementation of the is_ese()
discipline function before calling it to determine if a given device is
an ESE DASD.
The current usage of the logical AND operator will lead to a NULL
pointer dereference as the function is called even if the function
pointer is NULL.
Fix... | ```diff
diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c
index c85ee42732a3..e5b8b413f5ab 100644
--- a/drivers/s390/block/dasd_ioctl.c
+++ b/drivers/s390/block/dasd_ioctl.c
@@ -324,7 +324,7 @@ out_err:
static int dasd_release_space(struct dasd_device *device,
struct format_data_... |
dcba277d119af323c267d1f27f61b868dac62753 | Analyze and fix the following issue in the Linux kernel code: s390/dasd: Fix path verification interrupted by concurrent dasd_sleep_on_immediatly | Problem Details:
When all channel paths to a DASD device are lost and subsequently
recovered, the path event handler starts one IO per path via
dasd_sleep_on_immediatly() to execute read configuration data (RCD) with
high priority.
dasd_sleep_on_immediatly() works by terminating the currently running
request before in... | ```diff
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 3181c06d91ce..d8d912a3b3fe 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -21,6 +21,7 @@
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/vmalloc.h>
+#include <linux/delay.h>
#include ... |
01476391aecef36a3b789ee844357b22fbc90665 | Analyze and fix the following issue in the Linux kernel code: s390/zcrypt: Fix missing mem scrub at clear key import in cca_clr2cipherkey() | Problem Details:
The helper function _ip_cprb_helper() uses internal buffer memory for
building and processing CPRBs. After use this buffer was never
scrubbed which could lead to leaving for example clear key material in
memory which could be exposed via tricky reuse of this same memory.
Extend the _ip_cprb_helper() f... | ```diff
diff --git a/drivers/s390/crypto/zcrypt_ccamisc.c b/drivers/s390/crypto/zcrypt_ccamisc.c
index f797786107b9..86d2ee78c9f4 100644
--- a/drivers/s390/crypto/zcrypt_ccamisc.c
+++ b/drivers/s390/crypto/zcrypt_ccamisc.c
@@ -1015,7 +1015,8 @@ static int _ip_cprb_helper(u16 cardnr, u16 domain,
int clr_key_bit_s... |
e935cd525af4c6ed2e2c6404aa27ca19c7f39ddb | Analyze and fix the following issue in the Linux kernel code: s390/zcrypt: Close speculative mem read possibility | Problem Details:
The domain value is extracted from a given CCA or EP11 ioctl struct
when a CPRB is about to be sent. Thus this is a user controlled value.
Under some special conditions (custom device node used, administrative
load) this value is used as an array index after bounds checking, but
without speculation bar... | ```diff
diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c
index 81eefdeae248..ec6a4c2f9f04 100644
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -879,6 +879,7 @@ static long _zcrypt_send_cprb(u32 xflags, struct ap_perms *perms,
if (perms != &ap_perms ... |
983279d7f86ade73db86f886e09172dd567031b5 | Analyze and fix the following issue in the Linux kernel code: s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs | Problem Details:
There is a wrong upper limit check for the domain value when an EP11
CPRB is processed for sending to a crypto card. This check is only
active on custom device nodes but may lead to access heap memory
behind perms->adm when an administrative CPRB is sent.
Add correct limit (AP_DOMAINS = 256) checking t... | ```diff
diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c
index f57189c2b839..81eefdeae248 100644
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -1077,7 +1077,7 @@ static long _zcrypt_send_ep11_cprb(u32 xflags, struct ap_perms *perms,
print_hex_dump_deb... |
36b230835b8a008266aad22168ca52afacc8a58d | Analyze and fix the following issue in the Linux kernel code: s390/zcrypt: Fix buffer over-read in cca_cipher2protkey | Problem Details:
Add validation of both the actual key buffer size and token length
fields in all the cca_check_sec*token() functions. Additionally check
in cca_gencipherkey() for possible underflow with returned key size.
The CCA token structures contain user-controlled len fields that
were used in operations without... | ```diff
diff --git a/drivers/s390/crypto/pkey_cca.c b/drivers/s390/crypto/pkey_cca.c
index 4bc47952324e..e8dc2f77c137 100644
--- a/drivers/s390/crypto/pkey_cca.c
+++ b/drivers/s390/crypto/pkey_cca.c
@@ -236,22 +236,16 @@ static int cca_key2protkey(const struct pkey_apqn *apqns, size_t nr_apqns,
if (hdr->type == TOKTY... |
a9ae0f6dd45c3ccc1d69363f7aea8af179122730 | Analyze and fix the following issue in the Linux kernel code: s390/zcrypt: Validate length for CCA ECC private key requests | Problem Details:
cca_ecc2protkey() derives the copy length for the CPRB parameter
block directly from the length field in the key token. Reject the
request early if the token length exceeds the available space in the
parameter block.
Fixes: fa6999e326fe ("s390/pkey: support CCA and EP11 secure ECC private keys")
Signe... | ```diff
diff --git a/drivers/s390/crypto/zcrypt_ccamisc.c b/drivers/s390/crypto/zcrypt_ccamisc.c
index db6a4211a97e..322677a8d320 100644
--- a/drivers/s390/crypto/zcrypt_ccamisc.c
+++ b/drivers/s390/crypto/zcrypt_ccamisc.c
@@ -1428,6 +1428,9 @@ int cca_ecc2protkey(u16 cardnr, u16 domain, const u8 *key,
} __packed * p... |
06afe425d5283b9764303de47f554da5a808ce8a | Analyze and fix the following issue in the Linux kernel code: s390/zcrypt: Validate length for CCA AES cipher key requests | Problem Details:
cca_cipher2protkey() derives the copy length for the CPRB parameter
block directly from the length field in the key token. Reject the
request early if the token length exceeds the available space in the
parameter block.
Fixes: 4bc123b18ce6 ("s390/zcrypt: Add low level functions for CCA AES cipher keys... | ```diff
diff --git a/drivers/s390/crypto/zcrypt_ccamisc.c b/drivers/s390/crypto/zcrypt_ccamisc.c
index 84936a795b95..db6a4211a97e 100644
--- a/drivers/s390/crypto/zcrypt_ccamisc.c
+++ b/drivers/s390/crypto/zcrypt_ccamisc.c
@@ -1261,6 +1261,9 @@ int cca_cipher2protkey(u16 cardnr, u16 domain, const u8 *ckey,
} __packed... |
b7ab86bdc65eadcfc43a0e3faf682a3f750cfb96 | Analyze and fix the following issue in the Linux kernel code: s390/pci: Fix s390_pci_mmio_write syscall error return without MIO | Problem Details:
On a machine without PCI memory-I/O (MIO) support or when running with
pci=nomio the s390 specific PCI MMIO write syscall checks if the MMIO
cookie is above ZPCI_IOMAP_ADDR_BASE as a sanity check before even
trying to perform the MMIO. If this check fails the return value was
left unchanged and thus 0 ... | ```diff
diff --git a/arch/s390/pci/pci_mmio.c b/arch/s390/pci/pci_mmio.c
index 51e7a28af899..f3f79ba78410 100644
--- a/arch/s390/pci/pci_mmio.c
+++ b/arch/s390/pci/pci_mmio.c
@@ -188,6 +188,7 @@ SYSCALL_DEFINE3(s390_pci_mmio_write, unsigned long, mmio_addr,
goto out_unlock_mmap;
}
+ ret = -EFAULT;
io_addr = (... |
c679ce3be6cb63763d68ab9b5d9d73ddc0a40762 | Analyze and fix the following issue in the Linux kernel code: iomap: add a separate bio_set for iomap_split_ioend | Problem Details:
iomap_split_ioend can split bios that already come from
iomap_ioend_bioset and thus deadlock when the bioset is exhausted.
Add a separate bio_set to avoid this deadlock.
Christian Brauner <[email protected]> says:
Mark iomap_ioend_split_bioset static as it is only used in ioend.c,
fixing the sparse ... | ```diff
diff --git a/fs/iomap/ioend.c b/fs/iomap/ioend.c
index 30468d51b5ad..fb636dce43af 100644
--- a/fs/iomap/ioend.c
+++ b/fs/iomap/ioend.c
@@ -13,6 +13,7 @@
struct bio_set iomap_ioend_bioset;
EXPORT_SYMBOL_GPL(iomap_ioend_bioset);
+static struct bio_set iomap_ioend_split_bioset;
struct iomap_ioend *iomap_ini... |
cc679d7a6303e84d769f2afcde1fc51c51f127cd | Analyze and fix the following issue in the Linux kernel code: uprobes: Fix NULL pointer dereference in hprobe_expire() | Problem Details:
Forking a task that has a pending uretprobe can oops the kernel with a
NULL pointer dereference in the clone() path:
BUG: kernel NULL pointer dereference, address: 0000000000000018
Oops: 0002 [#1] SMP NOPTI
RIP: 0010:hprobe_expire
CR2: 0000000000000018
Call Trace:
uprobe_copy_process
c... | ```diff
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 4084e926e284..6300b216012c 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -830,7 +830,7 @@ static struct uprobe *hprobe_expire(struct hprobe *hprobe, bool get)
if (try_cmpxchg(&hprobe->state, &hstate, uprobe ? HPROBE_... |
e8bb506e6ef749ac0336f3e579d8d02396b7d832 | Analyze and fix the following issue in the Linux kernel code: ksmbd: use memcmp() to compare ClientGUIDs | Problem Details:
ClientGUID is a fixed-size binary value and can contain embedded NUL
bytes. strncmp() stops comparing at the first NUL byte, so different
ClientGUID values can incorrectly be treated as equal.
Use memcmp() in SMB3 multichannel session binding and
FSCTL_VALIDATE_NEGOTIATE_INFO to compare all SMB2_CLIEN... | ```diff
diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c
index 404a4203f7da..76f63f9adc72 100644
--- a/fs/smb/server/smb2pdu.c
+++ b/fs/smb/server/smb2pdu.c
@@ -1969,7 +1969,7 @@ int smb2_sess_setup(struct ksmbd_work *work)
goto out_err;
}
- if (strncmp(conn->ClientGUID, sess->ClientGUID,
+ if ... |
cb469993b3a61a72653770856d37af616d72d05f | Analyze and fix the following issue in the Linux kernel code: ksmbd: reject repeated SMB2 NEGOTIATE requests | Problem Details:
Unauthenticated client can send multiple successful SMB2 NEGOTIATE
requests on one connection before SESSION_SETUP. While the connection is
in KSMBD_SESS_NEED_SETUP, smb2_handle_negotiate() accepts another
SMB3.1.1 NEGOTIATE and overwrites conn->preauth_info with a new allocation.
Only the final alloca... | ```diff
diff --git a/fs/smb/server/connection.h b/fs/smb/server/connection.h
index ec75633b7da0..2a194ee36fb4 100644
--- a/fs/smb/server/connection.h
+++ b/fs/smb/server/connection.h
@@ -200,6 +200,11 @@ void ksmbd_conn_r_count_dec(struct ksmbd_conn *conn);
* This is a hack. We will move status to a proper place once... |
e7188199eff46a636f3436356f0aae039be6dd66 | Analyze and fix the following issue in the Linux kernel code: ksmbd: fix use-after-free in __close_file_table_ids() | Problem Details:
A ksmbd_file can remain alive after logical close while another session
holds a temporary reference obtained through ksmbd_lookup_fd_inode().
ksmbd_close_fd() currently marks the file closed and drops the idr-owned
reference, but leaves the pointer published in the closing session's idr
until the final... | ```diff
diff --git a/fs/smb/server/vfs_cache.c b/fs/smb/server/vfs_cache.c
index d95c405eab11..a141025581af 100644
--- a/fs/smb/server/vfs_cache.c
+++ b/fs/smb/server/vfs_cache.c
@@ -697,6 +697,8 @@ int ksmbd_close_fd(struct ksmbd_work *work, u64 id)
fp = NULL;
else {
fp->f_state = FP_CLOSED;
+ idr_remove(... |
bc0e8faf90e776a2f1f3967a04e8091e6bdb4977 | Analyze and fix the following issue in the Linux kernel code: io_uring: preserve task restrictions across exec | Problem Details:
Per-task restrictions apply to all rings created by a task. Once
installed, they should not be dropped across exec.
For a task that has used io_uring, the exec cancellation path calls
__io_uring_free(). This frees both the task context and the per-task
restriction, so a ring created after exec is unre... | ```diff
diff --git a/io_uring/cancel.c b/io_uring/cancel.c
index 8c6fa6f367e4..7d7820eab878 100644
--- a/io_uring/cancel.c
+++ b/io_uring/cancel.c
@@ -660,6 +660,6 @@ end_wait:
*/
atomic_dec(&tctx->in_cancel);
/* for exec all current's requests should be gone, kill tctx */
- __io_uring_free(current);
+ io_u... |
1afb8eaeec44fd011f2b93ccd9fd426d753d963b | Analyze and fix the following issue in the Linux kernel code: drm/i915/hdmi: Poll for 200 msec for TMDS_Scrambler_Status | Problem Details:
HDMI 2.0 section 6.1.3.1 specifies that after enabling
Scrambling_Enable and starting scrambled video transmission, the source
should poll Scrambling_Status until it reads 1 or until a timeout of
200 ms expires.
Add a polling step after enabling the HDMI port to check the scrambling
status when HDMI s... | ```diff
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 6296635c4e79..95008e0c0eb8 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3501,6 +3501,8 @@ static void intel_ddi_enable_hdmi(struct intel_atomic_state... |
fa1ac3b9eb62918f039276d4d11cc02f682bf93c | Analyze and fix the following issue in the Linux kernel code: io_uring/zcrx: don't clear master_ctx from the import path | Problem Details:
import_zcrx() attaches an existing ifq to another ring. It never calls
zcrx_set_ring_ctx() and so never takes the ->master_ctx reference, but
its error path still passes @ctx to zcrx_unregister(), which clears
->master_ctx and drops its percpu_ref whenever ifq->master_ctx == ctx.
That condition is re... | ```diff
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c
index 76b9b0d54af9..f1464ea8ca64 100644
--- a/io_uring/zcrx.c
+++ b/io_uring/zcrx.c
@@ -808,7 +808,8 @@ err_xa_erase:
scoped_guard(mutex, &ctx->mmap_lock)
xa_erase(&ctx->zcrx_ctxs, id);
err:
- zcrx_unregister(ifq, ctx);
+ /* the import path never set the ->ma... |
c77ffbc980efb337fd750c337d8157d532ea14e5 | Analyze and fix the following issue in the Linux kernel code: io_uring/net: initialize mshot_len for send | Problem Details:
Commit:
6a8afb9fff64 ("io_uring/net: allow multishot receive per-invocation cap")
changed how io_mshot_prep_retry() set sr->len, and added the same
initialization in io_mshot_prep_retry(). But it neglected to touch the
send path, which may also uses the mshot retry path. Ensure that
sr->mshot_len alw... | ```diff
diff --git a/io_uring/net.c b/io_uring/net.c
index 00a7df803b99..a74d15f7b7d2 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -445,6 +445,7 @@ int io_sendmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
req->flags |= REQ_F_NOWAIT;
if (req->flags & REQ_F_BUFFER_SELECT)
sr->buf_group = r... |
451c9075d6c53f2438d110addbeeeea6fac18567 | Analyze and fix the following issue in the Linux kernel code: qede: sync udp_tunnel ports outside qede_lock in the recovery path | Problem Details:
A TX timeout on a qede NIC that has VXLAN/GENEVE tunnel ports
configured wedges the rtnetlink control plane of the whole machine:
NETDEV WATCHDOG: ens6f1 (qede): transmit queue 2 timed out 10226 ms
[qede_tx_timeout:586(ens6f1)]TX timeout on queue 2!
[qede_recovery_handler:2665(ens6f0)]Starting a... | ```diff
diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index cb0ae0650905..7ed17faced54 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -107,7 +107,7 @@ static void qede_remove(struct pci_dev *pdev)... |
9c19d60fea9f46ed0c3394653ef4941f1a459968 | Analyze and fix the following issue in the Linux kernel code: spi: spi-nxp-fspi: add per-SoC SDR/DTR clock rate limits for all supported SoCs | Problem Details:
The commit f43579ef3500 ("spi: spi-nxp-fspi: limit the clock rate for
different sample clock source selection") introduced a global 166MHz
cap for DTR mode (RXCLKSRC=3), based on the i.MX8MN datasheet timing
specification (Section 3.9.9, page 65).
After reviewing the FlexSPI timing parameters in the d... | ```diff
diff --git a/drivers/spi/spi-nxp-fspi.c b/drivers/spi/spi-nxp-fspi.c
index 1e36ae084dd8..39c1eaaf9e0a 100644
--- a/drivers/spi/spi-nxp-fspi.c
+++ b/drivers/spi/spi-nxp-fspi.c
@@ -340,6 +340,18 @@ struct nxp_fspi_devtype_data {
unsigned int quirks;
unsigned int lut_num;
bool little_endian;
+ /*
+ * The ma... |
a58a2b0ce354df531ebc71fc870058c2feb59f6b | Analyze and fix the following issue in the Linux kernel code: net: openvswitch: fix potential UAF on meter attach failure | Problem Details:
While attaching a newly created meter attach_meter() function makes
the new meter visible to other CPUs but can still fail afterwards.
On failure, it detaches the meter back and returns an error.
However, this is an unexpected behavior for the ovs_meter_cmd_set()
that uses a plain kfree(meter) on atta... | ```diff
diff --git a/net/openvswitch/meter.c b/net/openvswitch/meter.c
index a02c47277337..4aaeeae3af5b 100644
--- a/net/openvswitch/meter.c
+++ b/net/openvswitch/meter.c
@@ -133,18 +133,10 @@ static void dp_meter_instance_remove(struct dp_meter_instance *ti,
static int attach_meter(struct dp_meter_table *tbl, struc... |
1842bf97af109f5ebf830175c9725bf81ebb78b1 | Analyze and fix the following issue in the Linux kernel code: sched/deadline: Use revised wakeup rule only for running dl_server | Problem Details:
Commit 14a857056466 ("sched/deadline: Use revised wakeup rule for
dl_server") applies the revised wakeup rule to any server, as a result
servers that are not running (dl_defer_running == 0) and start with a
deadline overflow get enqueued and can boost tasks as if they were
running, invalidating the def... | ```diff
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index 0f858b98c9aa..200300043fa5 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -1017,7 +1017,8 @@ static void update_dl_entity(struct sched_dl_entity *dl_se)
if (dl_time_before(dl_se->deadline, rq_clock(rq)) ||
dl_ent... |
16809472409d998afcda402e32b8229b389337c4 | Analyze and fix the following issue in the Linux kernel code: octeontx2-pf: Set correct sequence for carrier off and tx queue stop | Problem Details:
During link down event, we were doing netif_tx_stop_all_queues() first
and then netif_carrier_off(). This can cause a potential race since
carrier is still on during down event. This patch reverse the calling
order to fix the issue.
Fixes: 50fe6c02e5ad ("octeontx2-pf: Register and handle link notifica... | ```diff
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index 2e33b33ec993..c995f2900859 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -889,8 +889,8 @@ static void o... |
732ed8f75ce583d115716f668dc80d730f3ad610 | Analyze and fix the following issue in the Linux kernel code: net: libwx: fix FDIR ATR queue mismatch for software VLAN packets | Problem Details:
When TX VLAN hardware offload is disabled, VLAN tags are embedded in
the packet payload (software VLAN). Previously, the driver failed to
set the WX_TX_FLAGS_SW_VLAN flag for these packets during transmission.
This missing flag caused the txgbe FDIR ATR logic to fall through to the
default hash calcul... | ```diff
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
index 814d88d2aee4..5d99e870de5e 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
@@ -1606,6 +1606,8 @@ static netdev_tx_t wx_xmit_frame_ring(struct sk... |
442ecdc83d00d6c2312541c4e0ada47e02805fcb | Analyze and fix the following issue in the Linux kernel code: net: dsa: realtek: use devm_mutex_init for l2_lock | Problem Details:
With CONFIG_DEBUG_MUTEXES enabled, mutex_destroy() needs to be called
before the lock is discarded. Use devm_mutex_init() instead so the
cleanup is handled automatically.
Fixes: 336e3e4a1ab37 ("net: dsa: realtek: rtl8365mb: add FDB support")
Reviewed-by: Mieczyslaw Nalewaj <[email protected]>
Signed-o... | ```diff
diff --git a/drivers/net/dsa/realtek/rtl83xx.c b/drivers/net/dsa/realtek/rtl83xx.c
index 9f40afb19ab2..9dd50b20c000 100644
--- a/drivers/net/dsa/realtek/rtl83xx.c
+++ b/drivers/net/dsa/realtek/rtl83xx.c
@@ -164,7 +164,9 @@ rtl83xx_probe(struct device *dev,
if (ret)
return ERR_PTR(ret);
- mutex_init(&priv... |
a95f3e9b8985fc0e21bfcf727e941c1f03476927 | Analyze and fix the following issue in the Linux kernel code: net: dsa: realtek: use devm_mutex_init for vlan_lock | Problem Details:
With CONFIG_DEBUG_MUTEXES enabled, mutex_destroy() needs to be called
before the lock is discarded. Use devm_mutex_init() instead so the
cleanup is handled automatically.
Fixes: 9da2c8672f771 ("net: dsa: realtek: rtl8365mb: add VLAN support")
Reviewed-by: Mieczyslaw Nalewaj <[email protected]>
Signed-... | ```diff
diff --git a/drivers/net/dsa/realtek/rtl83xx.c b/drivers/net/dsa/realtek/rtl83xx.c
index 9402bfe4f85a..9f40afb19ab2 100644
--- a/drivers/net/dsa/realtek/rtl83xx.c
+++ b/drivers/net/dsa/realtek/rtl83xx.c
@@ -160,7 +160,10 @@ rtl83xx_probe(struct device *dev,
if (ret)
return ERR_PTR(ret);
- mutex_init(&pri... |
050e07f8765d84b4e74fae239ff7a9f29eb6869c | Analyze and fix the following issue in the Linux kernel code: net: dsa: realtek: use devm_mutex_init for regmap lock | Problem Details:
With CONFIG_DEBUG_MUTEXES enabled, mutex_destroy() needs to be called
before the lock is discarded. Use devm_mutex_init() instead so the
cleanup is handled automatically.
Fixes: 907e772f6f6de ("net: dsa: realtek: allow subdrivers to externally lock regmap")
Reviewed-by: Mieczyslaw Nalewaj <namiltd@yah... | ```diff
diff --git a/drivers/net/dsa/realtek/rtl83xx.c b/drivers/net/dsa/realtek/rtl83xx.c
index 71124ecca92f..9402bfe4f85a 100644
--- a/drivers/net/dsa/realtek/rtl83xx.c
+++ b/drivers/net/dsa/realtek/rtl83xx.c
@@ -156,7 +156,10 @@ rtl83xx_probe(struct device *dev,
if (!priv)
return ERR_PTR(-ENOMEM);
- mutex_ini... |
70fd0cf29bc47882c1cb11ad4fb2881ac2c1e640 | Analyze and fix the following issue in the Linux kernel code: net: dsa: realtek: rtl8365mb: use devm_mutex_init for mib_lock | Problem Details:
With CONFIG_DEBUG_MUTEXES enabled, mutex_destroy() needs to be called
before the lock is discarded. Use devm_mutex_init() instead so the
cleanup is handled automatically.
Fixes: 4af2950c50c86 ("net: dsa: realtek-smi: add rtl8365mb subdriver for RTL8365MB-VC")
Reviewed-by: Mieczyslaw Nalewaj <namiltd@y... | ```diff
diff --git a/drivers/net/dsa/realtek/rtl8365mb_main.c b/drivers/net/dsa/realtek/rtl8365mb_main.c
index 5ac091bf93c9..aa05375b090a 100644
--- a/drivers/net/dsa/realtek/rtl8365mb_main.c
+++ b/drivers/net/dsa/realtek/rtl8365mb_main.c
@@ -1988,16 +1988,19 @@ static void rtl8365mb_get_stats64(struct dsa_switch *ds, ... |
54ad7ea45d63146a8e3c57375f8a269d4cf7ecea | Analyze and fix the following issue in the Linux kernel code: ptp: netc: fix potential interrupt storm caused by incorrect unbind order | Problem Details:
In netc_timer_remove(), hardware interrupts are disabled by clearing
TMR_TEMASK before ptp_clock_unregister() is called. This may cause a
race condition during driver unbind that could leave hardware interrupts
active. For example, a concurrent PTP_CLK_REQ_EXTTS ioctl can re-enable
TMR_TEMASK after it ... | ```diff
diff --git a/drivers/ptp/ptp_netc.c b/drivers/ptp/ptp_netc.c
index 5e381c354d74..1c20d7efab92 100644
--- a/drivers/ptp/ptp_netc.c
+++ b/drivers/ptp/ptp_netc.c
@@ -769,6 +769,7 @@ static void netc_timer_init(struct netc_timer *priv)
TMR_CTRL_TE | TMR_CTRL_FS;
netc_timer_wr(priv, NETC_TMR_CTRL, tmr_ctrl);... |
e67cc80b50f587cd1d8ffc8989dcec3291720bc3 | Analyze and fix the following issue in the Linux kernel code: net: mana: Return error code from mana_create_rxq() | Problem Details:
mana_create_rxq() returns a struct mana_rxq pointer and returns NULL on
any failure. The caller, mana_add_rx_queues(), cannot tell what went
wrong and hardcodes the error as -ENOMEM. As a result the actual failure
reported by the lower layers (for example -EPROTO from a failed HW
request) is masked and... | ```diff
diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c
index 9d9bfd116dab..92bb55935c1c 100644
--- a/drivers/net/ethernet/microsoft/mana/mana_en.c
+++ b/drivers/net/ethernet/microsoft/mana/mana_en.c
@@ -2829,7 +2829,7 @@ static struct mana_rxq *mana_create_rxq... |
bc62e843bc48f933da765ce47079fd992e535794 | Analyze and fix the following issue in the Linux kernel code: net: openvswitch: fix skb leak on flow key update failure during ct | Problem Details:
ovs_ct_execute() always steals or frees the skb on failure while
ovs_flow_key_update() does not. So, if it fails and we return right
away, the skb ends up leaked.
Fix that by breaking instead and letting the common error handling
code at the bottom of the loop to free the skb properly.
This is a ver... | ```diff
diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index 0118fe3b35e4..dc5ff859f114 100644
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -1380,7 +1380,7 @@ static int do_execute_actions(struct datapath *dp, struct sk_buff *skb,
if (!is_flow_key_valid(key)) {
err = o... |
e1cf066244dad576221b7123a0e5005967f25a20 | Analyze and fix the following issue in the Linux kernel code: net: openvswitch: fix skb leak on flow key update failure during recirculation | Problem Details:
do_execute_actions() returns right away when execute_recirc() fails on
the last action as it assumes this function always takes ownership of
the skb when 'last' is true. But when the flow key update fails, the
function doesn't free the skb and it ends up leaked.
This is a very unlikely scenario as it... | ```diff
diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index 513fca6a8e8a..0118fe3b35e4 100644
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -1108,6 +1108,10 @@ static int execute_masked_set_action(struct sk_buff *skb,
return err;
}
+/* When 'last' is true, recirc() should ... |
b041ed62aa6e3b2d7d36127e0e5d7bf2701f8231 | Analyze and fix the following issue in the Linux kernel code: net: stmmac: Fix E2E delay mechanism | Problem Details:
For E2E delay mechanism, "received DELAY_REQ without timestamp" error
messages show up for dwmac v3.70+ and dwxgmac IPs.
This issue affects socfpga platforms, Agilex7 (dwmac 3.70) and
Agilex5 (dwxgmac). According to the databook, to enable timestamping
for all events, the SNAPTYPSEL bits in the MAC_Ti... | ```diff
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 151c77713025..3801f9d45278 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -755,7 +755,8 @@ static int stmmac_hwtstam... |
77a9ebe8818cf6dd1699bd6728cb5d66307801d7 | Analyze and fix the following issue in the Linux kernel code: net: dsa: mt7530: error out on failed reads in MT7531 PHY polling | Problem Details:
The MT7531 indirect PHY access functions poll MT7531_PHY_IAC through
a helper which returns 0 when the underlying read fails, so a failed
bus transaction clears MT7531_PHY_ACS_ST and the access carries on,
returning garbage PHY register data to phylib.
Poll using regmap_read_poll_timeout(), which stop... | ```diff
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 292cde961f1a..aa33d94e11b5 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -191,12 +191,6 @@ mt7530_write(struct mt7530_priv *priv, u32 reg, u32 val)
mt7530_mutex_unlock(priv);
}
-static u32
-_mt7530_unlocked_rea... |
ed9adac35b8fac635f40e28461505e2e5b6c8fcc | Analyze and fix the following issue in the Linux kernel code: net: dsa: mt7530: error out on failed reads in ATC/VTCR command polling | Problem Details:
mt7530_fdb_cmd() and mt7530_vlan_cmd() poll the command register
through a helper which returns 0 when the underlying read fails. A
failed bus transaction thus clears ATC_BUSY/VTCR_BUSY and is treated
as successful command completion, and the subsequent ATC_INVALID and
VTCR_INVALID checks are defeated ... | ```diff
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 3c2a3029b10c..292cde961f1a 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -248,15 +248,20 @@ mt7530_fdb_cmd(struct mt7530_priv *priv, enum mt7530_fdb_cmd cmd, u32 *rsp)
{
u32 val;
int ret;
- struct mt7530_dummy_... |
b4ce102b2cd88424c5860fbbb20b9eb343a93bf4 | Analyze and fix the following issue in the Linux kernel code: net: dsa: mt7530: check bus->read() errors in the MDIO regmap backend | Problem Details:
bus->read() returns a negative errno on failure, but
mt7530_regmap_read() assigns it to a u16, truncating e.g. -ETIMEDOUT
into 0xff92, and returns success. The garbage word is then consumed as
register data, and read-modify-write cycles write it back to the
switch. Check both reads and propagate their ... | ```diff
diff --git a/drivers/net/dsa/mt7530-mdio.c b/drivers/net/dsa/mt7530-mdio.c
index 11ea924a9f35..784dd58a7158 100644
--- a/drivers/net/dsa/mt7530-mdio.c
+++ b/drivers/net/dsa/mt7530-mdio.c
@@ -55,8 +55,15 @@ mt7530_regmap_read(void *context, unsigned int reg, unsigned int *val)
if (ret < 0)
return ret;
- l... |
c052927905710de1ab7364bf1925efbd12517ea3 | Analyze and fix the following issue in the Linux kernel code: riscv: vdso: Only try to install vDSO when present | Problem Details:
vdso.so.dbg is only built with CONFIG_MMU.
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Fixes: f157d411a9eb ("riscv: add missing vdso_install target")
Fixes: 3edf39916977 ("vDSO, kbuild: Provide vDSO debug variants at... | ```diff
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index ce0cc737f870..1363e5bef35c 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -168,7 +168,7 @@ vdso_prepare: prepare0
endif
endif
-vdso-install-y += arch/riscv/kernel/vdso/vdso.so.dbg
+vdso-install-$(CONFIG_MMU) += arch/riscv/kernel/... |
74b21f52c5c5a71a05c0ff70e513f4f04ff28b17 | Analyze and fix the following issue in the Linux kernel code: sctp: validate Adaptation Indication parameter length | Problem Details:
The Adaptation Layer Indication parameter contains a fixed 32-bit
Adaptation Code Point after its parameter header. However,
sctp_verify_param() accepts a header-only parameter because the generic
parameter walker only requires the header to be present.
sctp_process_param() then reads adaptation_ind b... | ```diff
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index a1c0334a1038..0ae30c3c8913 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -2171,7 +2171,13 @@ static enum sctp_ierror sctp_verify_param(struct net *net,
case SCTP_PARAM_HEARTBEAT_INFO:
case SCTP_PARAM_UNRECOGNIZE... |
93cad1f6bd1e27c75c4a5ab000c2a2fc01181ccf | Analyze and fix the following issue in the Linux kernel code: ipv6: release fib6_null_entry on subtree failure | Problem Details:
When adding a source-specific route creates a new subtree, fib6_add()
installs fib6_null_entry as the temporary leaf of the new subtree root
and takes a fib6_info reference for that holder.
If adding the first source leaf fails, the code frees the just allocated
subtree root but leaves that hold behin... | ```diff
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index a130cdfaebfb..e9fc692d4f3b 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -1494,6 +1494,7 @@ int fib6_add(struct fib6_node *root, struct fib6_info *rt,
root, and then (in failure) stale node
in main tree.
*/
+ fib6_... |
fc9c7ca5fcbf7fe3bcba87d1ff72f0009071ba86 | Analyze and fix the following issue in the Linux kernel code: psp: fix NULL genl_sock deref race with concurrent netns teardown | Problem Details:
The race occurs between network namespace removal and PSP device
unregistration. When a netns is deleted while a PSP device associated
with that netns is concurrently being removed, psp_dev_unregister()
triggers psp_nl_notify_dev() to send a device change notification.
Concurrently, cleanup_net() runn... | ```diff
diff --git a/net/psp/psp_nl.c b/net/psp/psp_nl.c
index 9610d8c456ff..43b066353c65 100644
--- a/net/psp/psp_nl.c
+++ b/net/psp/psp_nl.c
@@ -62,7 +62,14 @@ psp_nl_multicast_per_ns(struct psp_dev *psd, unsigned int group,
struct net *main_net;
struct sk_buff *ntf;
- main_net = dev_net(psd->main_netdev);
+ /*... |
a10ea943356b9d70c5616a0a06f6fa97cfdaccb1 | Analyze and fix the following issue in the Linux kernel code: dibs: fix use-after-free of dmb_node in loopback attach/detach/unregister | Problem Details:
dibs_lo_attach_dmb(), dibs_lo_detach_dmb() and dibs_lo_unregister_dmb()
look up the dmb_node under dmb_ht_lock, drop the lock and only then
operate on the node's refcount. Nothing keeps the node alive across
that window: __dibs_lo_unregister_dmb() removes the node from the hash
table under the write lo... | ```diff
diff --git a/drivers/dibs/dibs_loopback.c b/drivers/dibs/dibs_loopback.c
index 0f2e09311152..fd5caf1e19a8 100644
--- a/drivers/dibs/dibs_loopback.c
+++ b/drivers/dibs/dibs_loopback.c
@@ -118,14 +118,9 @@ err_bit:
return rc;
}
-static void __dibs_lo_unregister_dmb(struct dibs_lo_dev *ldev,
- struct ... |
78cd56c2a9d2e8da763cea3b06b636266ca66911 | Analyze and fix the following issue in the Linux kernel code: ring-buffer: Fix reader page read offset for remote buffers | Problem Details:
A page swapped in by __rb_get_reader_page_from_remote() retains its
stale read offset, causing subsequent reads to skip events or read
past valid data. Fix it.
Link: https://patch.msgid.link/[email protected]
Fixes: fbd1743ecba1 ("ring-buffer: Add non-consuming read for ri... | ```diff
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 804ccae694d2..78d3875a47a5 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -5783,6 +5783,7 @@ __rb_get_reader_page_from_remote(struct ring_buffer_per_cpu *cpu_buffer)
cpu_buffer->head_page = new_head;
cp... |
a0188cc133696627857d16054e43f9ebc7efc821 | Analyze and fix the following issue in the Linux kernel code: riscv: mm: Fix out-of-bounds page-table walk during memory hot-remove | Problem Details:
remove_pud_mapping() and remove_p4d_mapping() obtain a child table base
with pud_offset(p4dp, 0) and p4d_offset(pgd, 0), then add the index for
addr.
RISC-V folds page-table levels at runtime. When a level is folded, its
offset helper returns the parent entry itself, but the index can still be
nonzero... | ```diff
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 395ed9ab578e..b6d149e989c8 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -1625,7 +1625,7 @@ static void __meminit remove_pud_mapping(pud_t *pud_base, unsigned long addr, un
for (; addr < end; addr = next) {
next = pud_addr_e... |
e5a259d98823a93459643b239b71fed7589ab669 | Analyze and fix the following issue in the Linux kernel code: kbuild: rpm-pkg: Preserve BTF sections in kernel modules during debuginfo stripping | Problem Details:
After switching to the kernel's default package scripts for our local
kernel RPM builds, we noticed that module BTF entries were missing:
$ ls /sys/kernel/btf/
vmlinux <<<< only vmlinux, no module BTF
Root cause: find-debuginfo.sh (from the debugedit package) prefers
eu-strip over strip when e... | ```diff
diff --git a/scripts/package/kernel.spec b/scripts/package/kernel.spec
index c732415662ef..46e80970f723 100644
--- a/scripts/package/kernel.spec
+++ b/scripts/package/kernel.spec
@@ -67,7 +67,18 @@ This package provides debug information for the kernel image and modules from th
%undefine _unique_debug_srcs
%u... |
d0ecbedd6a70f2fe768d46de740265dc8a4424e3 | Analyze and fix the following issue in the Linux kernel code: ASoC: rt722: reset codec to fix abnormal sound | Problem Details:
The audio output may become abnormal after a warm reboot from Windows.
Reset the codec once during hardware initialization to restore it to a known
state and prevent the issue.
BugLink: https://github.com/thesofproject/linux/issues/5845
Signed-off-by: Shuming Fan <[email protected]>
Link: https://p... | ```diff
diff --git a/sound/soc/codecs/rt722-sdca-sdw.c b/sound/soc/codecs/rt722-sdca-sdw.c
index e68aa0350a5b..7482a9a8d198 100644
--- a/sound/soc/codecs/rt722-sdca-sdw.c
+++ b/sound/soc/codecs/rt722-sdca-sdw.c
@@ -113,6 +113,7 @@ static int rt722_sdca_mbq_size(struct device *dev, unsigned int reg)
case 0x2000090 ...... |
8419331e64d92a8de5fc4feef0e305f201fb8b33 | Analyze and fix the following issue in the Linux kernel code: drm/amd/display: Exit idle optimizations before programming | Problem Details:
[Why]
We need to exit PSR/IPS before programming. Before calling DC for
programming in amdgpu_dm_commit_planes(), there's a
vblank_control_workqueue flush. This waits for IPS and PSR exit. (See
drm_vblank_on/off() > amdgpu_dm_crtc_set_vblank() --queue_work()->
amdgpu_dm_crtc_vblank_control_worker())
... | ```diff
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index eaf19ec843e8..1820547b1dde 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -9903,25 +9903,6 @@ static void remove_str... |
a65f5179d3f0c93da31b450aeb416eaa22f1912b | Analyze and fix the following issue in the Linux kernel code: drm/amd/pm: hide pp_table sysfs on APUs | Problem Details:
APUs use firmware-owned DPM tables and do not support replacement through
pp_table. Generic callbacks can nevertheless expose the sysfs file and
accept an upload before resetting the power management stack.
Treat pp_table as unsupported on APUs. Use the same platform check in the
get and set paths to ... | ```diff
diff --git a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
index 6d1ad4d5b8f0..e5e89294958a 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
@@ -1183,6 +1183,13 @@ int amdgpu_dpm_dispatch_task(struct amdgpu_device *adev,
return ret;
}
+s... |
7d3aae206663c4e006b25a1c7a20a4029e67da76 | Analyze and fix the following issue in the Linux kernel code: KVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active | Problem Details:
Always update x2APIC MSR intercepts for L1 when AVIC is deactivated, even
if L2 is active and KVM is using a separate MSR bitmap to run L2. If AVIC
is fully enabled prior to running L2, and is then inhibited while L2 is
active (for a VM-scoped inhibit), then KVM will run L1 with AVIC disabled,
but wit... | ```diff
diff --git a/arch/x86/kvm/svm/avic.c b/arch/x86/kvm/svm/avic.c
index 58e493a80cb0..16e09a8fe85e 100644
--- a/arch/x86/kvm/svm/avic.c
+++ b/arch/x86/kvm/svm/avic.c
@@ -240,14 +240,6 @@ static void avic_deactivate_vmcb(struct vcpu_svm *svm)
if (!is_sev_es_guest(&svm->vcpu))
svm_set_intercept(svm, INTERCEPT_C... |
d6c075f797a672a6e3bd2fd44aee713801698ec2 | Analyze and fix the following issue in the Linux kernel code: accel/qaic: use sizeof(*trans_hdr) for transaction length check | Problem Details:
In encode_message() the per-transaction lower-bound check compares
trans_hdr->len against sizeof(trans_hdr), i.e. the size of the pointer,
instead of sizeof(*trans_hdr), the size of struct qaic_manage_trans_hdr.
Every other length check in this file (encode_message() at the loop
guard, decode_message(... | ```diff
diff --git a/drivers/accel/qaic/qaic_control.c b/drivers/accel/qaic/qaic_control.c
index bb94d3556904..50bf3340e49c 100644
--- a/drivers/accel/qaic/qaic_control.c
+++ b/drivers/accel/qaic/qaic_control.c
@@ -786,7 +786,7 @@ static int encode_message(struct qaic_device *qdev, struct manage_msg *user_msg,
brea... |
246df90b5f1a8a6e6abbd2f058b029558720adec | Analyze and fix the following issue in the Linux kernel code: audit: fix potential use-after-free in audit_del_rule() | Problem Details:
`audit_del_rule()` destroys `e->rule.exe` via `audit_remove_mark_rule()`
before unlinking the rule from RCU-visible filter lists and waiting for a
grace period. Concurrent readers in `audit_filter()` and
`audit_filter_rules()` still dereference `e->rule.exe`, while the fsnotify
mark can be freed on an ... | ```diff
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index 4401119b5275..7f791afe5791 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -1045,6 +1045,10 @@ int audit_del_rule(struct audit_entry *entry)
goto out;
}
+ list_del_rcu(&e->list);
+ list_del(&e->rule.list);
+ synchronize_rcu();... |
f865c143629d4094866a811dba5f329250bad486 | Analyze and fix the following issue in the Linux kernel code: audit: fix potential integer overflow in audit_log_n_string() | Problem Details:
audit_log_n_string() computes new_len as "slen + 3" (enclosing quotes
plus the NUL terminator) and stores it into an int, while slen is a
size_t. For a sufficiently large slen the addition can overflow and/or
the result be truncated when assigned to the int new_len, so the
"new_len > avail" check can ... | ```diff
diff --git a/kernel/audit.c b/kernel/audit.c
index 562476937fa7..9412af9144bc 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -2120,7 +2120,8 @@ void audit_log_n_hex(struct audit_buffer *ab, const unsigned char *buf,
void audit_log_n_string(struct audit_buffer *ab, const char *string,
size_t slen)
{
-... |
52075128273ace53e6254e37899a47d40d4baf45 | Analyze and fix the following issue in the Linux kernel code: x86/CPU/AMD: Carve out a Zen5 models range | Problem Details:
Family 0x1a, model 0xd0..0xd7 belongs to the Zen5 generation. Carve it
out from the larger, Zen6 range where former doesn't belong.
[ bp: Rewrite commit message, add tags. ]
Fixes: b5f53e6d3d32 ("x86/CPU/AMD: Add more Zen6 models")
Signed-off-by: Pratik Vishwakarma <[email protected]>
Sign... | ```diff
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 487ac147e11f..d61df70d6875 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -515,11 +515,13 @@ static void bsp_init_amd(struct cpuinfo_x86 *c)
case 0x00 ... 0x2f:
case 0x40 ... 0x4f:
case 0x60 ... 0x7f:
+ ... |
f51fed61eea0daba2f95f1a6074085e4cd513c7b | Analyze and fix the following issue in the Linux kernel code: riscv: drop __init from vec_check_unaligned_access_speed_all_cpus | Problem Details:
This function runs within a kthread and need not necessarily finish
before system finishes boot and free_initmem() unmaps the .init.text
section. This function makes calls to SBI for probing unaligned access
speed, and if this is slow for some reason (say some debug prints were
added to SBI), the kthre... | ```diff
diff --git a/arch/riscv/kernel/unaligned_access_speed.c b/arch/riscv/kernel/unaligned_access_speed.c
index bb57eb5d19df..5a5aa22124e7 100644
--- a/arch/riscv/kernel/unaligned_access_speed.c
+++ b/arch/riscv/kernel/unaligned_access_speed.c
@@ -289,7 +289,7 @@ free:
}
/* Measure unaligned access speed on all ... |
c22c7b735f9810ad276014f788f9aa5c879ec238 | Analyze and fix the following issue in the Linux kernel code: tracing/filters: Fix false positive match in regex_match_full() | Problem Details:
regex_match_full() calls strncmp(str, r->pattern, len) where len is the
target field buffer size. When len is smaller than r->len (the filter
pattern length), strncmp() checks only len bytes of r->pattern against
str. If those len bytes match, strncmp() returns 0, resulting in a
false-positive match wh... | ```diff
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 6385cd662d8d..2b46ca536045 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -1027,6 +1027,9 @@ static int regex_match_full(char *str, struct regex *r, int len)
if (!len)
ret... |
ac8719969e6c3c54e939834df812bc41f25453cf | Analyze and fix the following issue in the Linux kernel code: tracing: Check return value of __register_event() in trace_module_add_events() | Problem Details:
trace_module_add_events() ignores the return value of __register_event()
and unconditionally calls __add_event_to_tracers() for each event.
If __register_event() fails (for example, if event_init() fails), the
trace_event_call is not added to ftrace_events list, but
__add_event_to_tracers() still crea... | ```diff
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 956692856fa8..c01b10b99f67 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -3933,8 +3933,8 @@ static void trace_module_add_events(struct module *mod)
end = mod->trace_events + mod->num_trace_events;
... |
12b80cdbc54cf615b4717a4e8180063408091ea2 | Analyze and fix the following issue in the Linux kernel code: tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions | Problem Details:
mmio_trace_rw() and mmio_trace_mapping() retrieve mmio_trace_array into
tr and pass it to __trace_mmiotrace_rw() and __trace_mmiotrace_map().
If these functions are invoked while mmio_trace_array is NULL (e.g. before
initialization or after disabled), accessing tr->array_buffer.buffer will
result in a ... | ```diff
diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
index e064ba3f28cb..df8692c2dea8 100644
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -294,11 +294,15 @@ device_initcall(init_mmio_trace);
static void __trace_mmiotrace_rw(struct trace_array *tr,
st... |
c786d2bdf1f3964deee192ad942dee2a741c1e2c | Analyze and fix the following issue in the Linux kernel code: tracing/mmiotrace: Reset dropped_count in mmio_reset_data() | Problem Details:
mmio_reset_data() is called during tracer initialization, reset, and
start. While it resets overrun_detected and prev_overruns, it neglects
to reset dropped_count. Consequently, dropped event counts from prior
tracing sessions persist in dropped_count and corrupt overrun reports
in subsequent runs.
Fi... | ```diff
diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
index b88b8d9923ad..e064ba3f28cb 100644
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -29,6 +29,7 @@ static void mmio_reset_data(struct trace_array *tr)
{
overrun_detected = false;
prev_overruns = 0;... |
cfca5a48b03fbd33c8cb84cb73ee2e34467f3a33 | Analyze and fix the following issue in the Linux kernel code: riscv: mm: fix SWIOTLB initialization for systems with DRAM above 4GB | Problem Details:
On RISC-V platforms where the entire physical memory (DRAM) resides
above the 32-bit address space (i.e., above dma32_phys_limit), the
current SWIOTLB initialization logic fails.
This patch addresses two interconnected issues on such platforms:
1. Incorrect 32-bit DMA bounce assumption:
The existing ... | ```diff
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 3e450890be07..395ed9ab578e 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -164,7 +164,9 @@ static void print_vm_layout(void) { }
void __init arch_mm_preinit(void)
{
- bool swiotlb = max_pfn > PFN_DOWN(dma32_phys_limit);
+ bool s... |
End of preview. Expand in Data Studio
π§ Linux Kernel Bugfixes & Patches Dataset (Instruction-Tuned)
π Dataset Description
This dataset is a highly curated, instruction-tuned collection of problem-solution pairs extracted directly from the official Linux Kernel Git repository (torvalds/linux). It is specifically designed to train Large Language Models (LLMs) on low-level C programming, kernel architecture, memory management, and security vulnerability patching.
Unlike raw commit histories, this dataset has been strictly filtered to include only meaningful bug fixes and excludes noisy data such as typos, documentation updates, and version bumps.
- Language: English (Commit messages), C / Assembly (Code)
- License: GPL-2.0 (Inherited from Linux Kernel)
- Format: Supervised Fine-Tuning (SFT) ready (Instruction / Input / Output)
π Intended Uses & Applications
This dataset is perfect for training AI Agents and local LLMs for:
- Low-Level Code Repair: Teaching models to fix memory leaks, use-after-free errors, null pointer dereferences, and race conditions.
- Patch Generation: Generating valid
git diffoutputs based on issue descriptions. - Cybersecurity Analysis: Fine-tuning models to recognize and patch CVEs and kernel panics.
π Dataset Structure
Each row in the dataset represents a single bug-fix commit. The data is formatted for immediate use in SFT pipelines (like Unsloth, QLoRA, Axolotl).
Example Instance:
{
"id": "a1b2c3d4e5f6...",
"instruction": "Analyze and fix the following issue in the Linux kernel code: net: sched: fix memory leak in tc_action",
"input": "Problem Details:\nWhen a filter action fails to initialize, the memory allocated for option parameters is not properly freed, resulting in a memory leak under high load.",
"output": "```diff\n--- a/net/sched/act_api.c\n+++ b/net/sched/act_api.c\n@@ -120,6 +120,7 @@ static int tcf_action_init(struct net *net...\n+ kfree(opt);\n```"
}
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