| Date | Name | Commit | Repro | Result |
|---|---|---|---|---|
| 2023/11/02 | upstream (ToT) | 90d624af2e5a | C | Didn't crash |
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| Date | Name | Commit | Repro | Result |
|---|---|---|---|---|
| 2023/11/02 | upstream (ToT) | 90d624af2e5a | C | Didn't crash |
INFO: task syz-executor926:5913 blocked for more than 143 seconds.
Not tainted 5.15.137-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor926 state:D stack:26624 pid: 5913 ppid: 3532 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
perf_event_free_task+0x555/0x680 kernel/events/core.c:13084
copy_process+0x303a/0x3ef0 kernel/fork.c:2485
kernel_clone+0x210/0x960 kernel/fork.c:2604
__do_sys_clone kernel/fork.c:2721 [inline]
__se_sys_clone kernel/fork.c:2705 [inline]
__x64_sys_clone+0x23f/0x290 kernel/fork.c:2705
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fca9a2dacf9
RSP: 002b:00007fca99a98228 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fca9a2dacf9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000d816e480
RBP: 00007fca9a3653c8 R08: 0000000000000000 R09: 00007fca99a986c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fca9a3653c0
R13: 00000000d816e480 R14: 00000000d816e480 R15: 00007fffb2782428
</TASK>
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91f020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by klogd/2951:
#0: ffff8880b9b39718 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475
2 locks held by getty/3263:
#0: ffff8880250ea098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002bb32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.137-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:109 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_idle_do_entry+0x10f/0x340 drivers/acpi/processor_idle.c:570
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023/11/01 23:22 | linux-5.15.y | 12952a23a5da | 69904c9f | .config | console log | report | syz | C | ci2-linux-5-15-kasan-perf | INFO: task hung in perf_event_free_task |