syzbot


kernel panic: stack is corrupted in __schedule (3)

Status: moderation: reported on 2022/08/15 21:43
Reported-by: syzbot+0fd8b9f031b04f34c82e@syzkaller.appspotmail.com
First crash: 53d, last: 39d
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel panic: stack is corrupted in __schedule 1 771d 767d 0/24 auto-closed as invalid on 2020/11/21 13:35
upstream kernel panic: stack is corrupted in __schedule (2) 1 310d 306d 0/24 auto-closed as invalid on 2022/01/26 17:30

Sample crash report:
Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: __schedule+0x117a/0x118e kernel/sched/core.c:6304
CPU: 1 PID: 2664 Comm: syz-fuzzer Not tainted 5.17.0-rc1-syzkaller-00002-g0966d385830d #0
Hardware name: riscv-virtio,qemu (DT)
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
[<ffffffff831a1392>] warn_bogus_irq_restore+0x0/0x34 kernel/panic.c:670
[<ffffffff831a6876>] __schedule+0x117a/0x118e kernel/sched/core.c:6304
SMP: stopping secondary CPUs
Rebooting in 86400 seconds..

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-qemu2-riscv64 2022/08/25 03:17 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 0966d385830d 514514f6 .config log report info kernel panic: stack is corrupted in __schedule
ci-qemu2-riscv64 2022/08/11 21:33 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 0966d385830d 21724cb2 .config log report info kernel panic: stack is corrupted in __schedule
* Struck through repros no longer work on HEAD.