syzbot


kernel panic: corrupted stack end in ret_from_exception

Status: moderation: reported on 2024/06/17 11:00
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+d0b85a6325bf10d1b2d9@syzkaller.appspotmail.com
First crash: 30d, last: 30d

Sample crash report:
Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.10.0-rc3-syzkaller-g83a7eefedc9b #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff8000f6f8>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:129
[<ffffffff85c253c4>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:135
[<ffffffff85c7f13c>] __dump_stack lib/dump_stack.c:88 [inline]
[<ffffffff85c7f13c>] dump_stack_lvl+0x108/0x196 lib/dump_stack.c:114
[<ffffffff85c7f1e6>] dump_stack+0x1c/0x24 lib/dump_stack.c:123
[<ffffffff85c25f8a>] panic+0x382/0x800 kernel/panic.c:347
[<ffffffff85c8e0ec>] schedule_debug kernel/sched/core.c:5962 [inline]
[<ffffffff85c8e0ec>] __schedule+0x342e/0x3486 kernel/sched/core.c:6628
[<ffffffff85c8f0e4>] preempt_schedule_irq+0x7a/0x1a8 kernel/sched/core.c:7067
[<ffffffff85c828ca>] raw_irqentry_exit_cond_resched kernel/entry/common.c:311 [inline]
[<ffffffff85c828ca>] raw_irqentry_exit_cond_resched kernel/entry/common.c:303 [inline]
[<ffffffff85c828ca>] irqentry_exit+0x138/0x17a kernel/entry/common.c:354
[<ffffffff85c81562>] do_irq+0x34/0x4a arch/riscv/kernel/traps.c:390
[<ffffffff85ca3d18>] ret_from_exception+0x0/0x64 arch/riscv/kernel/entry.S:112
[<ffffffff800dab7a>] arch_local_irq_enable arch/riscv/include/asm/irqflags.h:21 [inline]
[<ffffffff800dab7a>] ksoftirqd_run_end kernel/softirq.c:411 [inline]
[<ffffffff800dab7a>] run_ksoftirqd kernel/softirq.c:929 [inline]
[<ffffffff800dab7a>] run_ksoftirqd+0xda/0x144 kernel/softirq.c:920
[<ffffffff801639e2>] smpboot_thread_fn+0x654/0xb9c kernel/smpboot.c:164
[<ffffffff8014d7e4>] kthread+0x28c/0x3a6 kernel/kthread.c:389
[<ffffffff85ca3e22>] ret_from_fork+0xe/0x1c arch/riscv/kernel/entry.S:232
SMP: stopping secondary CPUs
Rebooting in 86400 seconds..

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/13 10:55 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 83a7eefedc9b 2aa5052f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 kernel panic: corrupted stack end in ret_from_exception
* Struck through repros no longer work on HEAD.