syzbot


kernel panic: corrupted stack end in toggle_allocation_gate
Status: moderation: reported on 2022/05/02 11:58
Reported-by: syzbot+8d56d2e4b913bbf7586f@syzkaller.appspotmail.com
First crash: 28d, last: 28d

Sample crash report:
Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 0 PID: 49 Comm: kworker/u4:4 Not tainted 5.17.0-rc1-syzkaller-00002-g0966d385830d #0
Hardware name: riscv-virtio,qemu (DT)
Workqueue: events_unbound toggle_allocation_gate
Call Trace:
[<ffffffff8000a228>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:113
[<ffffffff831668cc>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:119
[<ffffffff831756ba>] __dump_stack lib/dump_stack.c:88 [inline]
[<ffffffff831756ba>] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:106
[<ffffffff83175742>] dump_stack+0x1c/0x24 lib/dump_stack.c:113
[<ffffffff83166fa8>] panic+0x24a/0x634 kernel/panic.c:233
[<ffffffff831a688a>] schedule_debug kernel/sched/core.c:5541 [inline]
[<ffffffff831a688a>] schedule+0x0/0x14c kernel/sched/core.c:6187
[<ffffffff831a6b00>] preempt_schedule_common+0x4e/0xde kernel/sched/core.c:6462
[<ffffffff831a6bc4>] preempt_schedule+0x34/0x36 kernel/sched/core.c:6487
[<ffffffff831a9556>] __mutex_lock_common kernel/locking/mutex.c:608 [inline]
[<ffffffff831a9556>] __mutex_lock+0x7c6/0xade kernel/locking/mutex.c:733
[<ffffffff831a9882>] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:785
[<ffffffff80010e30>] arch_jump_label_transform+0xcc/0x1e2 arch/riscv/kernel/jump_label.c:38
[<ffffffff803265aa>] __jump_label_update+0xfe/0x230 kernel/jump_label.c:437
[<ffffffff80326834>] jump_label_update+0x158/0x2b6 kernel/jump_label.c:830
[<ffffffff80326ae8>] static_key_enable_cpuslocked+0x156/0x19c kernel/jump_label.c:177
[<ffffffff80326b50>] static_key_enable+0x22/0x34 kernel/jump_label.c:190
[<ffffffff804777e8>] toggle_allocation_gate mm/kfence/core.c:734 [inline]
[<ffffffff804777e8>] toggle_allocation_gate+0x118/0x374 mm/kfence/core.c:726
[<ffffffff80093b44>] process_one_work+0x654/0xffe kernel/workqueue.c:2307
[<ffffffff8009484e>] worker_thread+0x360/0x8fa kernel/workqueue.c:2454
[<ffffffff800a7f58>] kthread+0x19e/0x1fa kernel/kthread.c:377
[<ffffffff80005724>] ret_from_exception+0x0/0x10
SMP: stopping secondary CPUs
Rebooting in 86400 seconds..

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-qemu2-riscv64 2022/04/29 03:34 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 0966d385830d e9076525 .config log report info kernel panic: corrupted stack end in toggle_allocation_gate