KASAN: user-memory-access Write in llc_ui_autobind

Status: auto-obsoleted due to no activity on 2025/08/12 05:37
Subsystems: net
[Documentation on labels]
First crash: 468d, last: 468d
▶ ▼ Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 general protection fault in llc_ui_autobind 2 syz, C 2060 1275d 1603d 0/1 upstream: reported C repro on 2022/03/28 09:52

Sample crash report:
==================================================================
BUG: KASAN: user-memory-access in instrument_atomic_write include/linux/instrumented.h:82 [inline]
BUG: KASAN: user-memory-access in atomic_set include/linux/atomic/atomic-instrumented.h:67 [inline]
BUG: KASAN: user-memory-access in refcount_set include/linux/refcount.h:134 [inline]
BUG: KASAN: user-memory-access in refcount_warn_saturate+0x1d/0x210 lib/refcount.c:15
Write of size 4 at addr 000000010001a401 by task syz.1.4469/21700

CPU: 0 UID: 0 PID: 21700 Comm: syz.1.4469 Not tainted 6.15.0-rc5-syzkaller-00022-g01f95500a162 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 kasan_report+0xe0/0x110 mm/kasan/report.c:634
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189
 instrument_atomic_write include/linux/instrumented.h:82 [inline]
 atomic_set include/linux/atomic/atomic-instrumented.h:67 [inline]
 refcount_set include/linux/refcount.h:134 [inline]
 refcount_warn_saturate+0x1d/0x210 lib/refcount.c:15
 __refcount_dec include/linux/refcount.h:461 [inline]
 refcount_dec include/linux/refcount.h:476 [inline]
 netdev_tracker_alloc include/linux/netdevice.h:4342 [inline]
 llc_ui_autobind.isra.0+0x443/0x510 net/llc/af_llc.c:312
 </IRQ>
 <TASK>
 </TASK>
==================================================================
Kernel panic - not syncing: KASAN: panic_on_warn set ...
CPU: 0 UID: 0 PID: 21700 Comm: syz.1.4469 Not tainted 6.15.0-rc5-syzkaller-00022-g01f95500a162 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x3d/0x1f0 lib/dump_stack.c:120
 panic+0x71c/0x800 kernel/panic.c:354
 check_panic_on_warn kernel/panic.c:243 [inline]
 check_panic_on_warn+0xab/0xb0 kernel/panic.c:238
 end_report+0x107/0x170 mm/kasan/report.c:227
 kasan_report+0xee/0x110 mm/kasan/report.c:636
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189
 instrument_atomic_write include/linux/instrumented.h:82 [inline]
 atomic_set include/linux/atomic/atomic-instrumented.h:67 [inline]
 refcount_set include/linux/refcount.h:134 [inline]
 refcount_warn_saturate+0x1d/0x210 lib/refcount.c:15
 __refcount_dec include/linux/refcount.h:461 [inline]
 refcount_dec include/linux/refcount.h:476 [inline]
 netdev_tracker_alloc include/linux/netdevice.h:4342 [inline]
 llc_ui_autobind.isra.0+0x443/0x510 net/llc/af_llc.c:312
 </IRQ>
 <TASK>
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/05/06 03:48 upstream 01f95500a162 ae98e6b9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root KASAN: user-memory-access Write in llc_ui_autobind
* Struck through repros no longer work on HEAD.