INFO: task hung in ip_mc_drop

Kernel	Title	Count	Last	Reported	Patched	Status
android-44	INFO: task hung in ip_mc_drop_socket	1	2431d	2431d	0/2	auto-closed as invalid on 2019/02/22 12:39
upstream	INFO: task hung in ip_mc_drop_socket net	1	2414d	2414d	0/28	auto-closed as invalid on 2019/02/22 10:26
upstream	INFO: task hung in ip_mc_drop_socket (3) net	7	131d	182d	0/28	auto-obsoleted due to no activity on 2024/10/11 20:06
upstream	INFO: task hung in ip_mc_drop_socket (2) net	5	1128d	1130d	0/28	auto-closed as invalid on 2022/01/18 13:17
linux-4.19	INFO: task hung in ip_mc_drop_socket (2)	1	762d	762d	0/1	auto-obsoleted due to no activity on 2023/02/17 23:08

batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task syz-executor.0:21859 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D26488 21859 11160 0x80000002 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 ip_mc_drop_socket+0x89/0x260 net/ipv4/igmp.c:2702 inet_release+0x49/0x1e0 net/ipv4/af_inet.c:414 __sock_release+0xcd/0x2a0 net/socket.c:599 sock_close+0x15/0x20 net/socket.c:1214 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbf3/0x2be0 kernel/exit.c:870 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd360fa6059 Code: Bad RIP value. RSP: 002b:00007fd35f91b218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 00007fd3610b8f68 RCX: 00007fd360fa6059 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd3610b8f6c RBP: 00007fd3610b8f60 R08: 00000052d5ed30d8 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fd3610b8f6c R13: 00007ffdcbb7ed8f R14: 00007fd35f91b300 R15: 0000000000022000 Showing all locks held in the system: 3 locks held by kworker/0:0/5: #0: 00000000d04023ad ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000005b81a41f ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001f5f44df (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236 3 locks held by kworker/1:0/19: #0: 00000000d04023ad ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000002793211a (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001f5f44df (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 3 locks held by kworker/u4:2/58: 1 lock held by khungtaskd/1563: #0: 000000003adc8a4e (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7797: #0: 00000000aa5c6315 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 3 locks held by rs:main Q:Reg/7799: #0: 00000000f885d742 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 #1: 0000000015ac3580 (sb_writers#3){.+.+}, at: file_start_write include/linux/fs.h:2779 [inline] #1: 0000000015ac3580 (sb_writers#3){.+.+}, at: vfs_write+0x463/0x540 fs/read_write.c:548 #2: 00000000909ac518 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline] #2: 00000000909ac518 (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 3 locks held by kworker/0:3/9338: #0: 00000000f4b13b2d ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000055c13a46 ((addr_chk_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001f5f44df (rtnl_mutex){+.+.}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4476 1 lock held by syz-executor.0/11160: #0: 000000001f5f44df (rtnl_mutex){+.+.}, at: tun_detach drivers/net/tun.c:759 [inline] #0: 000000001f5f44df (rtnl_mutex){+.+.}, at: tun_chr_close+0x3a/0x180 drivers/net/tun.c:3323 2 locks held by syz-executor.0/21859: #0: 00000000d378e925 (&sb->s_type->i_mutex_key#13){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 00000000d378e925 (&sb->s_type->i_mutex_key#13){+.+.}, at: __sock_release+0x86/0x2a0 net/socket.c:598 #1: 000000001f5f44df (rtnl_mutex){+.+.}, at: ip_mc_drop_socket+0x89/0x260 net/ipv4/igmp.c:2702 2 locks held by syz-executor.5/21883: #0: 000000001f5f44df (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000001f5f44df (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 #1: 000000006aca2b2f (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #1: 000000006aca2b2f (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1563 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4691 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:memcpy_erms+0x6/0x10 arch/x86/lib/memcpy_64.S:55 Code: eb 88 90 90 eb 1e 0f 1f 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 <f3> a4 c3 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20 72 7e 40 38 fe RSP: 0018:ffff8880a0c37970 EFLAGS: 00010097 RAX: ffff8880a0c379c8 RBX: ffffed1014186f33 RCX: 0000000000000003 RDX: 0000000000000004 RSI: ffff8880a0c379b9 RDI: ffff8880a0c379c9 RBP: ffffc90008864000 R08: 0000000000000001 R09: ffffed1014186f39 R10: 0000000000000003 R11: 00000000287838d7 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000001 FS: 00007fb7c83b18c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb7c58e9008 CR3: 00000000a175d000 CR4: 00000000003426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: memcpy include/linux/string.h:377 [inline] __bpf_trace_lock_acquire+0x14a/0x200 include/trace/events/lock.h:13 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x298/0x3c0 kernel/locking/lockdep.c:3907 seqcount_lockdep_reader_access include/linux/seqlock.h:81 [inline] read_seqcount_begin include/linux/seqlock.h:164 [inline] read_seqbegin include/linux/seqlock.h:440 [inline] path_init+0x626/0x19d0 fs/namei.c:2206 path_openat+0x185/0x2df0 fs/namei.c:3535 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fb7c7940840 Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 RSP: 002b:00007ffe7b2038a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007ffe7b203bb0 RCX: 00007fb7c7940840 RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 0000559f1de36790 RBP: 000000000000000d R08: 0000000000000000 R09: 00000000ffffffff R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000559f1de29040 R14: 00007ffe7b203b70 R15: 0000559f1de365b0 ---------------- Code disassembly (best guess): 0: eb 88 jmp 0xffffff8a 2: 90 nop 3: 90 nop 4: eb 1e jmp 0x24 6: 0f 1f 00 nopl (%rax) 9: 48 89 f8 mov %rdi,%rax c: 48 89 d1 mov %rdx,%rcx f: 48 c1 e9 03 shr $0x3,%rcx 13: 83 e2 07 and $0x7,%edx 16: f3 48 a5 rep movsq %ds:(%rsi),%es:(%rdi) 19: 89 d1 mov %edx,%ecx 1b: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) 1d: c3 retq 1e: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 24: 48 89 f8 mov %rdi,%rax 27: 48 89 d1 mov %rdx,%rcx * 2a: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction 2c: c3 retq 2d: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 34: 48 89 f8 mov %rdi,%rax 37: 48 83 fa 20 cmp $0x20,%rdx 3b: 72 7e jb 0xbb 3d: 40 38 fe cmp %dil,%sil