syzbot


INFO: task hung in ipv6_route_ioctl

Status: auto-obsoleted due to no activity on 2024/09/27 04:28
Reported-by: syzbot+7124977c38733e5819cc@syzkaller.appspotmail.com
First crash: 102d, last: 101d
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in ipv6_route_ioctl 1 1034d 1034d 0/1 auto-closed as invalid on 2022/03/28 22:32
upstream INFO: task hung in ipv6_route_ioctl net 2 1451d 1452d 0/28 auto-closed as invalid on 2021/01/06 04:59
upstream INFO: task hung in ipv6_route_ioctl (2) net 1 1330d 1330d 0/28 auto-closed as invalid on 2021/05/07 00:43
linux-4.19 INFO: task hung in ipv6_route_ioctl (2) 1 609d 609d 0/1 upstream: reported on 2023/01/28 02:21
upstream INFO: task hung in rtnetlink_rcv_msg net C inconclusive inconclusive 1970 81d 2044d 26/28 fixed on 2024/07/09 19:14

Sample crash report:
INFO: task syz-executor.4:3732 blocked for more than 143 seconds.
      Not tainted 5.15.161-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:28024 pid: 3732 ppid:  3525 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
 ipv6_route_ioctl+0x4c7/0x860 net/ipv6/route.c:4487
 inet6_ioctl+0x1e1/0x240 net/ipv6/af_inet6.c:583
 sock_do_ioctl+0x11d/0x5a0 net/socket.c:1140
 sock_ioctl+0x47f/0x770 net/socket.c:1257

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/19 04:27 linux-5.15.y 4878aadf2d15 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in ipv6_route_ioctl
2024/06/17 16:52 linux-5.15.y 4878aadf2d15 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in ipv6_route_ioctl
* Struck through repros no longer work on HEAD.