Hello,
syzbot found the following issue on:
HEAD commit: 93e0c9521fa8 Linux 6.6.154
git tree: linux-6.6.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=156fed49580000
kernel config:
https://syzkaller.appspot.com/x/.config?x=7be9809cedd6b69c
dashboard link:
https://syzkaller.appspot.com/bug?extid=9ec7e4d46fa11e400b01
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image:
https://storage.googleapis.com/syzbot-assets/ea9d28375dfc/disk-93e0c952.raw.xz
vmlinux:
https://storage.googleapis.com/syzbot-assets/bfd4a0737a2c/vmlinux-93e0c952.xz
kernel image:
https://storage.googleapis.com/syzbot-assets/504ccdaacbc1/bzImage-93e0c952.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+9ec7e4...@syzkaller.appspotmail.com
INFO: task syz.9.4488:23946 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.4488 state:D stack:27016 pid:23946 ppid:13709 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x15ae/0x4660 kernel/sched/core.c:6701
schedule+0xbd/0x170 kernel/sched/core.c:6775
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6834
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x673/0xc80 kernel/locking/mutex.c:747
__trace_eprobe_create+0x6c1/0xc50 kernel/trace/trace_eprobe.c:924
trace_probe_create+0xc8/0x130 kernel/trace/trace_probe.c:2138
create_dyn_event+0xad/0x140 kernel/trace/trace_dynevent.c:152
trace_parse_run_command+0x1f2/0x340 kernel/trace/trace.c:10243
vfs_write+0x299/0x9a0 fs/read_write.c:582
ksys_write+0x151/0x260 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9ea5f9e0d9
RSP: 002b:00007f9ea41d5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f9ea6226180 RCX: 00007f9ea5f9e0d9
RDX: 0000000000000025 RSI: 0000200000000100 RDI: 0000000000000007
RBP: 00007f9ea6035024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9ea6226218 R14: 00007f9ea6226180 R15: 00007ffedb2e3908
</TASK>
INFO: task syz.9.4488:23947 blocked for more than 149 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.4488 state:D stack:25832 pid:23947 ppid:13709 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x15ae/0x4660 kernel/sched/core.c:6701
schedule+0xbd/0x170 kernel/sched/core.c:6775
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6834
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x673/0xc80 kernel/locking/mutex.c:747
tracing_open_file_tr+0x157/0x2f0 kernel/trace/trace.c:4867
do_dentry_open+0x880/0x14b0 fs/open.c:929
do_open fs/namei.c:3683 [inline]
path_openat+0x284f/0x3270 fs/namei.c:3844
do_filp_open+0x1f2/0x430 fs/namei.c:3871
do_sys_openat2+0x134/0x1d0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_openat fs/open.c:1453 [inline]
__se_sys_openat fs/open.c:1448 [inline]
__x64_sys_openat+0x139/0x160 fs/open.c:1448
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9ea5f9e0d9
RSP: 002b:00007f9ea3db2028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f9ea6226270 RCX: 00007f9ea5f9e0d9
RDX: 0000000000000002 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007f9ea6035024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9ea6226308 R14: 00007f9ea6226270 R15: 00007ffedb2e3908
---
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