INFO: task hung in ip

INFO: task hung in ip_setsockopt

Status: auto-obsoleted due to no activity on 2024/09/28 04:29
Reported-by: syzbot+76442c3ef3a2bec4d0a0@syzkaller.appspotmail.com
First crash: 398d, last: 371d

▶ ▼ Similar bugs (3)

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in ip_setsockopt net				1	1727d	1727d	0/29	auto-closed as invalid on 2021/01/01 01:08
upstream	INFO: task hung in ip_setsockopt (2) net				1	1345d	1345d	0/29	auto-closed as invalid on 2022/01/17 23:55
upstream	INFO: task hung in rtnetlink_rcv_msg net	C	inconclusive	inconclusive	1970	352d	2315d	26/29	fixed on 2024/07/09 19:14

Sample crash report:

INFO: task syz-executor.2:4830 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.2  state:D stack:24688 pid: 4830 ppid:  4459 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
 do_ip_setsockopt net/ipv4/ip_sockglue.c:951 [inline]
 ip_setsockopt+0x4ff/0x3fb0 net/ipv4/ip_sockglue.c:1430
 tcp_setsockopt+0x23f/0x3680 net/ipv4/tcp.c:3707

Crashes (3):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Assets (help?)	Manager	Title
2024/06/20 04:28	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 ip_setsockopt
2024/06/12 01:36	linux-5.15.y	c61bd26ae81a	4d75f4f7	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	INFO: task hung in ip_setsockopt
2024/05/24 05:43	linux-5.15.y	83655231580b	8f98448e	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	INFO: task hung in ip_setsockopt

* ~~Struck through~~ repros no longer work on HEAD.