syzbot


kernel panic: corrupted stack end in do_idle (3)

Status: upstream: reported on 2026/02/19 02:14
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+33a3266aca8efa808d78@syzkaller.appspotmail.com
First crash: 195d, last: 14d
✨ AI Jobs (1)
ID Workflow Result Correct Bug Created Started Finished Revision Error
af68983e-dad9-4feb-a1c6-ca0e68758121 repro kernel panic: corrupted stack end in do_idle (3) 2026/03/07 15:52 2026/03/07 15:52 2026/03/07 16:00 31e9c887f7dc24e04b3ca70d0d54fc34141844b0
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[syzbot] [kernel?] kernel panic: corrupted stack end in do_idle (3) 0 (1) 2026/02/19 02:14
Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel panic: corrupted stack end in do_idle kernel 2 11 545d 580d 0/29 auto-obsoleted due to no activity on 2024/12/19 09:40
upstream kernel panic: corrupted stack end in do_idle (2) kernel 2 1 289d 285d 0/29 auto-obsoleted due to no activity on 2025/08/22 20:43

Sample crash report:
Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: ARM-Versatile Express
Call trace: 
[<80201a14>] (dump_backtrace) from [<80201b08>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:8281f940 r6:00000000 r5:822a7804 r4:00000001
[<80201af0>] (show_stack) from [<8021e458>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201af0>] (show_stack) from [<8021e458>] (dump_stack_lvl+0x5c/0x70 lib/dump_stack.c:120)
[<8021e3fc>] (dump_stack_lvl) from [<8021e484>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r7:8281f940 r6:00000000 r5:8281b680 r4:82a80d14
[<8021e46c>] (dump_stack) from [<802025f4>] (vpanic+0x114/0x320 kernel/panic.c:650)
[<802024e0>] (vpanic) from [<80202834>] (trace_suspend_resume+0x0/0x104 kernel/panic.c:787)
 r7:826cc400
[<80202800>] (panic) from [<81ae5584>] (schedule_debug kernel/sched/core.c:5855 [inline])
[<80202800>] (panic) from [<81ae5584>] (__schedule+0x13d8/0x13e0 kernel/sched/core.c:6783)
 r3:57ac6e9d r2:8280001c r1:822a7804 r0:82298d68
[<81ae41ac>] (__schedule) from [<81ae57bc>] (schedule_idle+0x24/0x68 kernel/sched/core.c:7030)
 r10:8281b0b4 r9:00000000 r8:00000000 r7:8280c590 r6:8281b680 r5:8280c550
 r4:8281b680
[<81ae5798>] (schedule_idle) from [<802b2ee8>] (do_idle+0x17c/0x2f0 kernel/sched/idle.c:360)
 r5:8280c550 r4:00000000
[<802b2d6c>] (do_idle) from [<802b336c>] (cpu_startup_entry+0x30/0x34 kernel/sched/idle.c:430)
 r10:8281b0b4 r9:823d05fc r8:00000000 r7:dddf03ec r6:8280c500 r5:82822440
 r4:000000ed
[<802b333c>] (cpu_startup_entry) from [<81ae2458>] (rest_init+0xdc/0xe0 init/main.c:760)
[<81ae237c>] (rest_init) from [<8260144c>] (start_kernel+0x824/0x840 init/main.c:1210)
[<82600c28>] (start_kernel) from [<00000000>] (0x0)
Rebooting in 86400 seconds..

Crashes (6):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/02/23 02:39 upstream aaf96df9593b 6e7b5511 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 kernel panic: corrupted stack end in do_idle
2026/02/19 02:13 upstream 23b0f90ba871 77d4d919 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 kernel panic: corrupted stack end in do_idle
2025/12/06 15:09 upstream 416f99c3b16f cee4cb10 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 kernel panic: corrupted stack end in do_idle
2025/10/09 02:12 upstream cd5a0afbdf80 7e2882b3 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 kernel panic: corrupted stack end in do_idle
2025/10/02 13:29 upstream 7f7072574127 49379ee0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 kernel panic: corrupted stack end in do_idle
2025/08/26 15:49 upstream fab1beda7597 e12e5ba4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 kernel panic: corrupted stack end in do_idle
* Struck through repros no longer work on HEAD.