syzbot


INFO: task hung in wext_ioctl_dispatch

Status: upstream: reported on 2024/05/22 06:35
Reported-by: syzbot+a41d36ece15264bf1f0a@syzkaller.appspotmail.com
First crash: 33d, last: 23d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 INFO: task hung in wext_ioctl_dispatch 1 14d 14d 0/3 upstream: reported on 2024/06/10 18:38

Sample crash report:
INFO: task syz-executor.4:7085 blocked for more than 143 seconds.
      Not tainted 6.1.92-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:27400 pid:7085  ppid:6050   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x142d/0x4550 kernel/sched/core.c:6558
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
 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:1255
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/01 03:08 linux-6.1.y 88690811da69 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in wext_ioctl_dispatch
2024/05/31 18:18 linux-6.1.y 88690811da69 0c378259 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in wext_ioctl_dispatch
2024/05/22 06:34 linux-6.1.y 4078fa637fcd 1014eca7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in wext_ioctl_dispatch
* Struck through repros no longer work on HEAD.