syzbot


INFO: task hung in wext_ioctl_dispatch

Status: auto-obsoleted due to no activity on 2024/09/18 18:38
Reported-by: syzbot+f64196050a8e38ea4467@syzkaller.appspotmail.com
First crash: 179d, last: 179d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 INFO: task hung in wext_ioctl_dispatch 3 188d 198d 0/3 auto-obsoleted due to no activity on 2024/09/09 03:09
upstream INFO: task hung in wext_ioctl_dispatch wireless 23 129d 199d 0/28 auto-obsoleted due to no activity on 2024/09/18 10:13

Sample crash report:
INFO: task syz-executor.3:3682 blocked for more than 143 seconds.
      Not tainted 5.15.160-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:24880 pid: 3682 ppid:  3532 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
 schedule+0x11b/0x1f0 kernel/sched/core.c:6459
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6518
 __mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 wext_ioctl_dispatch+0xb9/0x460 net/wireless/wext-core.c:996
 wext_handle_ioctl+0x15b/0x260 net/wireless/wext-core.c:1058
 sock_ioctl+0x13b/0x770 net/socket.c:1191
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f382d530f69
RSP: 002b:00007f382c0890c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f382d668050 RCX: 00007f382d530f69
RDX: 0000000020000040 RSI: 0000000000008b2a RDI: 0000000000000009

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/10 18:37 linux-5.15.y c61bd26ae81a 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in wext_ioctl_dispatch
* Struck through repros no longer work on HEAD.