syzbot


INFO: task hung in dev_ioctl

Status: upstream: reported on 2024/05/31 11:34
Reported-by: syzbot+58387a7b87f2c977178f@syzkaller.appspotmail.com
First crash: 54d, last: 37d
Similar bugs (11)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in dev_ioctl (4) net 1 1164d 1164d 0/27 auto-closed as invalid on 2021/08/15 15:56
linux-4.14 INFO: task hung in dev_ioctl 1 827d 827d 0/1 auto-closed as invalid on 2022/08/17 13:11
android-49 INFO: task hung in dev_ioctl 1 2209d 2209d 0/3 auto-closed as invalid on 2019/02/22 12:59
upstream INFO: task hung in dev_ioctl (2) net 1 1922d 1922d 0/27 closed as invalid on 2019/05/08 13:05
android-414 INFO: task hung in dev_ioctl 2 2126d 2146d 0/1 auto-closed as invalid on 2019/03/27 22:33
android-414 INFO: task hung in dev_ioctl (2) 1 1699d 1698d 0/1 auto-closed as invalid on 2020/03/28 22:15
upstream INFO: task hung in rtnetlink_rcv_msg net C inconclusive inconclusive 1970 15d 1979d 27/27 fixed on 2024/07/09 19:14
upstream INFO: task hung in dev_ioctl net 2 2123d 2151d 0/27 auto-closed as invalid on 2019/03/30 00:48
upstream INFO: task hung in dev_ioctl (3) net 7 1300d 1429d 0/27 auto-closed as invalid on 2021/04/01 04:28
linux-5.15 INFO: task hung in dev_ioctl 2 57d 63d 0/3 upstream: reported on 2024/05/22 11:00
upstream INFO: task hung in dev_ioctl (5) net 20 1007d 1052d 0/27 auto-closed as invalid on 2022/01/19 01:57

Sample crash report:
INFO: task syz-executor.1:6010 blocked for more than 143 seconds.
      Not tainted 6.1.94-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:29096 pid:6010  ppid:4700   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
 dev_ioctl+0x59c/0xf70 net/core/dev_ioctl.c:612
 sock_ioctl+0x68f/0x770 net/socket.c:1248
 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
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fabc827cea9
RSP: 002b:00007fabc8f5f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/17 07:18 linux-6.1.y eb44d83053d6 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in dev_ioctl
2024/06/05 17:50 linux-6.1.y 88690811da69 5aa1a7c9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in dev_ioctl
2024/05/31 11:33 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 dev_ioctl
* Struck through repros no longer work on HEAD.