INFO: task hung in ip6mr_sk

Kernel	Title	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in ip6mr_sk_done (2) net	1	1510d	1510d	0/28	auto-closed as invalid on 2021/01/01 18:48
android-49	INFO: task hung in ip6mr_sk_done	1	2400d	2400d	0/3	auto-closed as invalid on 2019/02/22 12:59
upstream	INFO: task hung in ip6mr_sk_done (3) net	15	1127d	1166d	0/28	auto-closed as invalid on 2022/01/19 01:57
android-44	INFO: task hung in ip6mr_sk_done	1	2412d	2412d	0/2	auto-closed as invalid on 2019/02/22 13:39
linux-5.15	INFO: task hung in ip6mr_sk_done	9	156d	177d	0/3	auto-obsoleted due to no activity on 2024/09/26 11:39
upstream	INFO: task hung in ip6mr_sk_done net	1	1611d	1611d	0/28	auto-closed as invalid on 2020/09/23 10:25
linux-4.19	INFO: task hung in ip6mr_sk_done	1	1043d	1043d	0/1	auto-closed as invalid on 2022/05/13 06:41

FAT-fs (loop4): bogus number of reserved sectors FAT-fs (loop4): Can't find a valid FAT filesystem INFO: task syz-executor.1:30167 blocked for more than 140 seconds. Not tainted 4.14.173-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27984 30167 7404 0x80000002 Call Trace: schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893 ip6mr_sk_done+0x3a/0x230 net/ipv6/ip6mr.c:1623 rawv6_close+0x48/0x70 net/ipv6/raw.c:1245 inet_release+0xdf/0x1b0 net/ipv4/af_inet.c:425 inet6_release+0x4c/0x70 net/ipv6/af_inet6.c:450 __sock_release+0xcd/0x2b0 net/socket.c:602 sock_close+0x15/0x20 net/socket.c:1139 __fput+0x25f/0x790 fs/file_table.c:210 task_work_run+0x113/0x190 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x9f2/0x2b00 kernel/exit.c:858 do_group_exit+0x100/0x310 kernel/exit.c:955 get_signal+0x385/0x1ca0 kernel/signal.c:2418 do_signal+0x7c/0x1690 arch/x86/kernel/signal.c:814 exit_to_usermode_loop+0x159/0x220 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c849 RSP: 002b:00007f6d2984dcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000076c048 RCX: 000000000045c849 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000076c048 RBP: 000000000076c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000076c04c R13: 00007ffedb991f4f R14: 00007f6d2984e9c0 R15: 000000000076c04c Showing all locks held in the system: 1 lock held by khungtaskd/1057: #0: (tasklist_lock){.+.?}, at: [<ffffffff81465b23>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4544 2 locks held by getty/7356: #0: (&tty->ldisc_sem){++++}, at: [<ffffffff833ad812>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1454>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156 2 locks held by getty/7357: #0: (&tty->ldisc_sem){++++}, at: [<ffffffff833ad812>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1454>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156 2 locks held by getty/7358: #0: (&tty->ldisc_sem){++++}, at: [<ffffffff833ad812>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1454>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156 2 locks held by getty/7359: #0: (&tty->ldisc_sem){++++}, at: [<ffffffff833ad812>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1454>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156 2 locks held by getty/7360: #0: (&tty->ldisc_sem){++++}, at: [<ffffffff833ad812>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1454>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156 2 locks held by getty/7361: #0: (&tty->ldisc_sem){++++}, at: [<ffffffff833ad812>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1454>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156 2 locks held by getty/7362: #0: (&tty->ldisc_sem){++++}, at: [<ffffffff833ad812>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1454>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156 1 lock held by syz-executor.1/22407: #0: (rcu_preempt_state.barrier_mutex){+.+.}, at: [<ffffffff814bbb36>] _rcu_barrier+0x56/0x400 kernel/rcu/tree.c:3546 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 4.14.173-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x139/0x17e lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5e2/0xb80 kernel/hung_task.c:274 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 18120 Comm: syz-executor.0 Not tainted 4.14.173-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880937026c0 task.stack: ffff888170c40000 RIP: 0010:__preempt_count_sub arch/x86/include/asm/preempt.h:81 [inline] RIP: 0010:preempt_count_sub+0x5a/0x130 kernel/sched/core.c:3142 RSP: 0000:ffff888170c47790 EFLAGS: 00000002 RAX: 0000000080000002 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000000004 RSI: ffff888170c47758 RDI: 0000000000000001 RBP: 1ffff1102e188efb R08: 0000000000000001 R09: ffff888170c47960 R10: ffff888170c4791d R11: 0000000000058071 R12: ffff888170c47970 R13: ffff888170c40000 R14: ffff888170c47970 R15: 0000000000000001 FS: 00007f0cd8279700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000004b8006e8 CR3: 000000020c00f000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_next_frame+0xbc6/0x17a0 arch/x86/kernel/unwind_orc.c:498 __unwind_start arch/x86/kernel/unwind_orc.c:578 [inline] __unwind_start+0x450/0x800 arch/x86/kernel/unwind_orc.c:508 unwind_start arch/x86/include/asm/unwind.h:60 [inline] __save_stack_trace+0x4a/0xd0 arch/x86/kernel/stacktrace.c:43 save_stack+0x32/0xa0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc mm/kasan/kasan.c:551 [inline] kasan_kmalloc+0xbf/0xe0 mm/kasan/kasan.c:529 kmem_cache_alloc+0x127/0x770 mm/slab.c:3552 __sigqueue_alloc+0x1d3/0x3f0 kernel/signal.c:395 __send_signal+0x194/0x1280 kernel/signal.c:1092 specific_send_sig_info kernel/signal.c:1203 [inline] force_sig_info+0x240/0x340 kernel/signal.c:1255 force_sig_info_fault.constprop.0+0x185/0x260 arch/x86/mm/fault.c:225 __bad_area_nosemaphore+0x1d9/0x2a0 arch/x86/mm/fault.c:918 __do_page_fault+0x859/0xb40 arch/x86/mm/fault.c:1390 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1122 RIP: 0be8:0x4ce0c3 RSP: d82796d4:000000000076c180 EFLAGS: ffffffff Code: 00 00 8b 0d e9 71 1a 09 85 c9 75 18 65 8b 05 ae e4 c3 7e 25 ff ff ff 7f 39 c3 7f 1a 81 fb fe 00 00 00 76 55 65 8b 05 96 e4 c3 7e <f7> db 65 01 1d 8d e4 c3 7e 5b c3 e8 f6 e0 bc 01 85 c0 74 f5 48