syzbot


INFO: task hung in ip_mroute_setsockopt

Status: upstream: reported on 2024/05/27 18:49
Reported-by: syzbot+4133d14e6502d288919d@syzkaller.appspotmail.com
First crash: 20d, last: 20d

Sample crash report:
INFO: task syz-executor.4:7044 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:27840 pid:7044  ppid:3567   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
 ip_mroute_setsockopt+0x15b/0x10c0 net/ipv4/ipmr.c:1369
 do_ip_setsockopt+0x5ae/0x3bb0 net/ipv4/ip_sockglue.c:950
 ip_setsockopt+0x5b/0x100 net/ipv4/ip_sockglue.c:1456

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/27 18:49 linux-6.1.y 88690811da69 761766e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in ip_mroute_setsockopt
* Struck through repros no longer work on HEAD.