syzbot
kernel panic: stack is corrupted in __schedule
Status:
premoderation: reported on 2026/09/07 15:24
Reported-by: syzbot+f41a767338e5359033cf@syzkaller.appspotmail.com
First crash: 7d09h, last: 7d09h
Sample crash report:
Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: __schedule+0xdd6/0x14a0 kernel/sched/core.c:-1
CPU: 0 PID: 431 Comm: syz.3.28 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
<TASK>
__dump_stack+0x21/0x30 lib/dump_stack.c:88
dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
dump_stack+0x15/0x20 lib/dump_stack.c:113
panic+0x287/0x790 kernel/panic.c:309
__stack_chk_fail+0x14/0x20 kernel/panic.c:761
__schedule+0xdd6/0x14a0 kernel/sched/core.c:-1
schedule+0x11e/0x1e0 kernel/sched/core.c:6621
exit_to_user_mode_loop+0x50/0xe0 kernel/entry/common.c:169
exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:320
irqentry_exit+0x12/0x40 kernel/entry/common.c:411
sysvec_apic_timer_interrupt+0x64/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0033:0x7f4fc3409240
Code: 49 8b 47 10 48 39 f0 72 76 48 63 cd 48 01 c1 49 39 4f 08 72 54 8d 4d ff 85 ed 74 3b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <48> 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 47 0f b6 0c 08 45 84 c9
RSP: 002b:00007f4fc1faa470 EFLAGS: 00000206
RAX: 0000000000c64038 RBX: 00007f4fc1faa530 RCX: 0000000000000005
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f4fc1faa5d0
RBP: 0000000000000102 R08: 00007f4fb9b8b000 R09: 0000000000000000
R10: 0000000000000000 R11: 00007f4fc1faa540 R12: 0000000000000001
R13: 00007f4fc3609020 R14: 0000000000000000 R15: 00007f4fc1faa5d0
</TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..
* Struck through repros no longer work on HEAD.