syzbot
UBSAN: array-index-out-of-bounds in rcu_is_watching
Status: closed as invalid on 2024/09/13 10:29
Subsystems:
mm
[Documentation on labels]
First crash: 721d, last: 719d
Sample crash report:
==================================================================
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in ./include/linux/context_tracking.h:126:25
index 2475582464 is out of range for type 'unsigned long[8]'
CPU: 0 UID: 0 PID: 5478 Comm: syz.3.39 Not tainted 6.11.0-rc4-next-20240822-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
ubsan_epilogue lib/ubsan.c:231 [inline]
__ubsan_handle_out_of_bounds+0x121/0x150 lib/ubsan.c:429
rcu_is_watching_curr_cpu include/linux/context_tracking.h:126 [inline]
rcu_is_watching+0xa5/0xb0 kernel/rcu/tree.c:737
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xbf/0xa30 kernel/locking/lockdep.c:5836
</TASK>
---[ end trace ]---
Kernel panic - not syncing: UBSAN: panic_on_warn set ...
Shutting down cpus with NMI
Kernel Offset: disabled
Rebooting in 86400 seconds..
* Struck through repros no longer work on HEAD.