INFO: task dhcpcd:2959 blocked for more than 430 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:dhcpcd state:D stack:0 pid:2959 tgid:2959 ppid:2958 task_flags:0x400140 flags:0x00000004 Call trace: [<81b1df3c>] (__schedule) from [<81b1f3d0>] (__schedule_loop kernel/sched/core.c:7268 [inline]) [<81b1df3c>] (__schedule) from [<81b1f3d0>] (schedule+0x2c/0x134 kernel/sched/core.c:7283) r10:ebfbdc1c r9:ebfbdc24 r8:00000002 r7:60000113 r6:82e31da8 r5:83970000 r4:83970000 [<81b1f3a4>] (schedule) from [<81b1f55c>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7340) r5:83970000 r4:82e31da4 [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock_common kernel/locking/mutex.c:726 [inline]) [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock.constprop.0+0x530/0xa88 kernel/locking/mutex.c:820) [<81b2210c>] (__mutex_lock.constprop.0) from [<81b22c68>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1114) r10:00002000 r9:00002000 r8:867ac680 r7:867ac6e4 r6:86710a80 r5:867ac680 r4:8164812c [<81b22c54>] (__mutex_lock_slowpath) from [<81b22ca8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:319) [<81b22c6c>] (mutex_lock) from [<8163d2e4>] (rtnl_lock net/core/rtnetlink.c:80 [inline]) [<81b22c6c>] (mutex_lock) from [<8163d2e4>] (rtnl_dumpit+0x70/0x8c net/core/rtnetlink.c:6865) [<8163d274>] (rtnl_dumpit) from [<81724d7c>] (netlink_dump+0x16c/0x4a8 net/netlink/af_netlink.c:2330) r7:867ac6e4 r6:00001f00 r5:867ac400 r4:86710a80 [<81724c10>] (netlink_dump) from [<8172529c>] (netlink_recvmsg+0x1e4/0x284 net/netlink/af_netlink.c:1981) r10:00002000 r9:00000c6c r8:856ee7c0 r7:ebfbdf20 r6:00000000 r5:867259c0 r4:867ac400 [<817250b8>] (netlink_recvmsg) from [<815ecb7c>] (sock_recvmsg_nosec net/socket.c:1137 [inline]) [<817250b8>] (netlink_recvmsg) from [<815ecb7c>] (sock_recvmsg+0x50/0x78 net/socket.c:1159) r10:ebfbdde4 r9:00000000 r8:7ed7a1c8 r7:00000000 r6:856ee7c0 r5:ebfbdf20 r4:817250b8 [<815ecb2c>] (sock_recvmsg) from [<815ecd7c>] (____sys_recvmsg+0x90/0x184 net/socket.c:2918) r7:00000000 r6:856ee7c0 r5:7ed7a1d4 r4:ebfbdf20 [<815eccec>] (____sys_recvmsg) from [<815ee494>] (___sys_recvmsg+0x88/0xbc net/socket.c:2960) r10:00000129 r9:83970000 r8:856ee7c0 r7:00000000 r6:7ed7a1d4 r5:ebfbdf20 r4:00000000 [<815ee40c>] (___sys_recvmsg) from [<815f083c>] (__sys_recvmsg+0x88/0xdc net/socket.c:2993) r8:83345800 r7:00000000 r6:7ed7a1d4 r5:83345800 r4:00000025 [<815f07b4>] (__sys_recvmsg) from [<815f08a4>] (__do_sys_recvmsg net/socket.c:2999 [inline]) [<815f07b4>] (__sys_recvmsg) from [<815f08a4>] (sys_recvmsg+0x14/0x18 net/socket.c:2996) r8:8020029c r7:00000129 r6:76fb5140 r5:00000000 r4:00000000 [<815f0890>] (sys_recvmsg) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xebfbdfa8 to 0xebfbdff0) dfa0: 00000000 00000000 00000025 7ed7a1d4 00000000 00000000 dfc0: 00000000 00000000 76fb5140 00000129 7ed7a27c 00000000 00000000 7ed7a1c8 dfe0: 00000001 7ed7a158 00000000 76eb9590 INFO: task dhcpcd:2959 is blocked on a mutex likely owned by task kworker/u8:0:27439. task:kworker/u8:0 state:R running task stack:0 pid:27439 tgid:27439 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: netns cleanup_net Call trace: [<81b1df3c>] (__schedule) from [<81b1f664>] (preempt_schedule_common kernel/sched/core.c:7370 [inline]) [<81b1df3c>] (__schedule) from [<81b1f664>] (preempt_schedule+0x4c/0xb4 kernel/sched/core.c:7394) r10:e0411bb0 r9:e0411bbc r8:81b1b160 r7:81b1b294 r6:e0411ba0 r5:e0411bac r4:e0411c20 [<8025a5f8>] (do_softirq) from [<8025a728>] (__local_bh_enable_ip+0xcc/0xd0 kernel/softirq.c:450) r5:e0411c20 r4:00000000 [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:196 [inline]) [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (_raw_spin_unlock_bh+0x34/0x38 kernel/locking/spinlock.c:214) r5:00000000 r4:99cc6000 [<81b28650>] (_raw_spin_unlock_bh) from [<818f99e4>] (spin_unlock_bh include/linux/spinlock.h:396 [inline]) [<81b28650>] (_raw_spin_unlock_bh) from [<818f99e4>] (addrconf_ifdown+0x150/0x768 net/ipv6/addrconf.c:3919) [<818f9894>] (addrconf_ifdown) from [<8190022c>] (addrconf_notify+0x60/0x8d0 net/ipv6/addrconf.c:3788) r10:00000006 r9:00000000 r8:e0411da4 r7:85e58000 r6:00000006 r5:99cc6000 r4:d1c15800 [<819001cc>] (addrconf_notify) from [<80285f14>] (notifier_call_chain+0x8c/0x220 kernel/notifier.c:85) r10:00000006 r9:00000000 r8:ffffffd1 r7:00000002 r6:82bf1698 r5:82bf23d0 r4:819001cc [<80285e88>] (notifier_call_chain) from [<8028618c>] (raw_notifier_call_chain+0x20/0x28 kernel/notifier.c:453) r10:8162dc40 r9:00000000 r8:d1c15e48 r7:00000002 r6:85e58000 r5:00000006 r4:e0411da4 [<8028616c>] (raw_notifier_call_chain) from [<816222c8>] (call_netdevice_notifiers_info+0x54/0xa0 net/core/dev.c:2249) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (call_netdevice_notifiers_extack net/core/dev.c:2287 [inline]) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (call_netdevice_notifiers net/core/dev.c:2301 [inline]) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (unregister_netdevice_many_notify+0x600/0xc1c net/core/dev.c:12421) r6:00000180 r5:00000000 r4:d1c15800 [<8162e468>] (unregister_netdevice_many_notify) from [<8162fef8>] (unregister_netdevice_many net/core/dev.c:12484 [inline]) [<8162e468>] (unregister_netdevice_many_notify) from [<8162fef8>] (default_device_exit_batch+0x304/0x384 net/core/dev.c:13076) r10:85e58190 r9:85e58000 r8:82e30c80 r7:e0411e98 r6:85e58190 r5:e0411eb8 r4:85e58094 [<8162fbf4>] (default_device_exit_batch) from [<8160f4ac>] (ops_exit_list net/core/net_namespace.c:205 [inline]) [<8162fbf4>] (default_device_exit_batch) from [<8160f4ac>] (ops_undo_list+0x10c/0x238 net/core/net_namespace.c:252) r10:00000001 r9:e0411e58 r8:82bdec98 r7:82bdf2ac r6:82bdec98 r5:e0411e98 r4:e0411eb8 [<8160f3a0>] (ops_undo_list) from [<81611c90>] (cleanup_net+0x208/0x358 net/core/net_namespace.c:702) r10:85e5a000 r9:82bdec7c r8:00000cc0 r7:85e58020 r6:e0411eb8 r5:ffffffd4 r4:82e30c40 [<81611a88>] (cleanup_net) from [<80276084>] (process_one_work+0x1c8/0x5a0 kernel/workqueue.c:3314) r10:8302d215 r9:8588a580 r8:02000000 r7:83012a00 r6:8302d200 r5:82bdec6c r4:8613de00 [<80275ebc>] (process_one_work) from [<80276d50>] (process_scheduled_works kernel/workqueue.c:3397 [inline]) [<80275ebc>] (process_one_work) from [<80276d50>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3478) r10:00000000 r9:8613de30 r8:8588a580 r7:82a03d80 r6:83012a20 r5:83012a00 r4:8613de00 [<80276be4>] (worker_thread) from [<80281590>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:df8dde88 r8:8601ff80 r7:8613de00 r6:80276be4 r5:8588a580 r4:864b8980 [<80281474>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe0411fb0 to 0xe0411ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80281474 r4:864b8980 INFO: task kworker/u8:12:24211 blocked for more than 441 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:12 state:D stack:0 pid:24211 tgid:24211 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: ipv6_addrconf addrconf_verify_work Call trace: [<81b1df3c>] (__schedule) from [<81b1f3d0>] (__schedule_loop kernel/sched/core.c:7268 [inline]) [<81b1df3c>] (__schedule) from [<81b1f3d0>] (schedule+0x2c/0x134 kernel/sched/core.c:7283) r10:dfebde64 r9:dfebde6c r8:00000002 r7:600d0013 r6:82e31da8 r5:846b3e80 r4:846b3e80 [<81b1f3a4>] (schedule) from [<81b1f55c>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7340) r5:846b3e80 r4:82e31da4 [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock_common kernel/locking/mutex.c:726 [inline]) [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock.constprop.0+0x530/0xa88 kernel/locking/mutex.c:820) [<81b2210c>] (__mutex_lock.constprop.0) from [<81b22c68>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1114) r10:84ee1c05 r9:846b3e80 r8:02000000 r7:83012a00 r6:84ee1c00 r5:85e587e8 r4:85e587e8 [<81b22c54>] (__mutex_lock_slowpath) from [<81b22ca8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:319) [<81b22c6c>] (mutex_lock) from [<8163d258>] (rtnl_lock+0x14/0x1c net/core/rtnetlink.c:80) [<8163d244>] (rtnl_lock) from [<818fc0d0>] (rtnl_net_lock include/linux/rtnetlink.h:130 [inline]) [<8163d244>] (rtnl_lock) from [<818fc0d0>] (addrconf_verify_work+0x14/0x28 net/ipv6/addrconf.c:4746) [<818fc0bc>] (addrconf_verify_work) from [<80276084>] (process_one_work+0x1c8/0x5a0 kernel/workqueue.c:3314) r5:85e587e8 r4:85847a80 [<80275ebc>] (process_one_work) from [<80276d50>] (process_scheduled_works kernel/workqueue.c:3397 [inline]) [<80275ebc>] (process_one_work) from [<80276d50>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3478) r10:83012a00 r9:85847ab0 r8:846b3e80 r7:82a03d80 r6:83012a20 r5:83012a00 r4:85847a80 [<80276be4>] (worker_thread) from [<80281590>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:dfeb1e88 r8:8611ef80 r7:85847a80 r6:80276be4 r5:846b3e80 r4:86424740 [<80281474>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfebdfb0 to 0xdfebdff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80281474 r4:86424740 INFO: task kworker/u8:12:24211 is blocked on a mutex likely owned by task kworker/u8:0:27439. task:kworker/u8:0 state:R running task stack:0 pid:27439 tgid:27439 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: netns cleanup_net Call trace: [<81b1df3c>] (__schedule) from [<81b1f664>] (preempt_schedule_common kernel/sched/core.c:7370 [inline]) [<81b1df3c>] (__schedule) from [<81b1f664>] (preempt_schedule+0x4c/0xb4 kernel/sched/core.c:7394) r10:85e587e4 r9:867d6a90 r8:00000294 r7:8025a6c8 r6:00000001 r5:8588a580 r4:8025a6c8 [<81b1f618>] (preempt_schedule) from [<8025a6c8>] (__local_bh_enable_ip+0x6c/0xd0 kernel/softirq.c:457) r7:e0411c20 r6:00000000 r5:00000001 r4:8588a580 [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:196 [inline]) [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (_raw_spin_unlock_bh+0x34/0x38 kernel/locking/spinlock.c:214) r5:00000000 r4:99cc8c00 [<81b28650>] (_raw_spin_unlock_bh) from [<818f99e4>] (spin_unlock_bh include/linux/spinlock.h:396 [inline]) [<81b28650>] (_raw_spin_unlock_bh) from [<818f99e4>] (addrconf_ifdown+0x150/0x768 net/ipv6/addrconf.c:3919) [<818f9894>] (addrconf_ifdown) from [<8190022c>] (addrconf_notify+0x60/0x8d0 net/ipv6/addrconf.c:3788) r10:00000006 r9:861e7000 r8:858f0e10 r7:00000000 r6:858f0e00 r5:8184373c r4:830c5400 [<81846cd4>] (inetdev_event) from [<80285f14>] (notifier_call_chain+0x8c/0x220 kernel/notifier.c:85) r10:00000006 r9:00000000 r8:fffffff0 r7:00000002 r6:82bee3bc r5:82bee4c4 r4:81846cd4 [<80285e88>] (notifier_call_chain) from [<8028618c>] (raw_notifier_call_chain+0x20/0x28 kernel/notifier.c:453) r10:8162dc40 r9:00000000 r8:861e7648 r7:00000002 r6:85e58000 r5:00000006 r4:e0411da4 [<8028616c>] (raw_notifier_call_chain) from [<816222c8>] (call_netdevice_notifiers_info+0x54/0xa0 net/core/dev.c:2249) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (call_netdevice_notifiers_extack net/core/dev.c:2287 [inline]) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (call_netdevice_notifiers net/core/dev.c:2301 [inline]) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (unregister_netdevice_many_notify+0x600/0xc1c net/core/dev.c:12421) r6:00000180 r5:00000000 r4:861e7000 [<8162e468>] (unregister_netdevice_many_notify) from [<8162fef8>] (unregister_netdevice_many net/core/dev.c:12484 [inline]) [<8162e468>] (unregister_netdevice_many_notify) from [<8162fef8>] (default_device_exit_batch+0x304/0x384 net/core/dev.c:13076) r10:85e58190 r9:85e58000 r8:82e30c80 r7:e0411e98 r6:85e58190 r5:e0411eb8 r4:85e58094 [<8162fbf4>] (default_device_exit_batch) from [<8160f4ac>] (ops_exit_list net/core/net_namespace.c:205 [inline]) [<8162fbf4>] (default_device_exit_batch) from [<8160f4ac>] (ops_undo_list+0x10c/0x238 net/core/net_namespace.c:252) r10:00000001 r9:e0411e58 r8:82bdec98 r7:82bdf2ac r6:82bdec98 r5:e0411e98 r4:e0411eb8 [<8160f3a0>] (ops_undo_list) from [<81611c90>] (cleanup_net+0x208/0x358 net/core/net_namespace.c:702) r10:85e5a000 r9:82bdec7c r8:00000cc0 r7:85e58020 r6:e0411eb8 r5:ffffffd4 r4:82e30c40 [<81611a88>] (cleanup_net) from [<80276084>] (process_one_work+0x1c8/0x5a0 kernel/workqueue.c:3314) r10:8302d215 r9:8588a580 r8:02000000 r7:83012a00 r6:8302d200 r5:82bdec6c r4:8613de00 [<80275ebc>] (process_one_work) from [<80276d50>] (process_scheduled_works kernel/workqueue.c:3397 [inline]) [<80275ebc>] (process_one_work) from [<80276d50>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3478) r10:00000000 r9:8613de30 r8:8588a580 r7:82a03d80 r6:83012a20 r5:83012a00 r4:8613de00 [<80276be4>] (worker_thread) from [<80281590>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:df8dde88 r8:8601ff80 r7:8613de00 r6:80276be4 r5:8588a580 r4:864b8980 [<80281474>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe0411fb0 to 0xe0411ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80281474 r4:864b8980 INFO: task kworker/u8:17:24224 blocked for more than 425 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:17 state:D stack:0 pid:24224 tgid:24224 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events_unbound linkwatch_event Call trace: [<81b1df3c>] (__schedule) from [<81b1f3d0>] (__schedule_loop kernel/sched/core.c:7268 [inline]) [<81b1df3c>] (__schedule) from [<81b1f3d0>] (schedule+0x2c/0x134 kernel/sched/core.c:7283) r10:dfe91e64 r9:dfe91e6c r8:00000002 r7:60000013 r6:82e31da8 r5:83f61900 r4:83f61900 [<81b1f3a4>] (schedule) from [<81b1f55c>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7340) r5:83f61900 r4:82e31da4 [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock_common kernel/locking/mutex.c:726 [inline]) [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock.constprop.0+0x530/0xa88 kernel/locking/mutex.c:820) [<81b2210c>] (__mutex_lock.constprop.0) from [<81b22c68>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1114) r10:83029a15 r9:83f61900 r8:02000000 r7:83012a00 r6:83029a00 r5:82bdf460 r4:880a3000 [<81b22c54>] (__mutex_lock_slowpath) from [<81b22ca8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:319) [<81b22c6c>] (mutex_lock) from [<8163d258>] (rtnl_lock+0x14/0x1c net/core/rtnetlink.c:80) [<8163d244>] (rtnl_lock) from [<8164a5b0>] (linkwatch_event+0x14/0x4c net/core/link_watch.c:313) [<8164a59c>] (linkwatch_event) from [<80276084>] (process_one_work+0x1c8/0x5a0 kernel/workqueue.c:3314) [<80275ebc>] (process_one_work) from [<80276d50>] (process_scheduled_works kernel/workqueue.c:3397 [inline]) [<80275ebc>] (process_one_work) from [<80276d50>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3478) r10:83012a00 r9:880a3030 r8:83f61900 r7:82a03d80 r6:83012a20 r5:83012a00 r4:880a3000 [<80276be4>] (worker_thread) from [<80281590>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:dff09e88 r8:8809ce80 r7:880a3000 r6:80276be4 r5:83f61900 r4:86489f00 [<80281474>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfe91fb0 to 0xdfe91ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80281474 r4:86489f00 INFO: task kworker/u8:17:24224 is blocked on a mutex likely owned by task kworker/u8:0:27439. task:kworker/u8:0 state:R running task stack:0 pid:27439 tgid:27439 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: netns cleanup_net Call trace: [<81b1df3c>] (__schedule) from [<81b1f664>] (preempt_schedule_common kernel/sched/core.c:7370 [inline]) [<81b1df3c>] (__schedule) from [<81b1f664>] (preempt_schedule+0x4c/0xb4 kernel/sched/core.c:7394) r10:00000006 r9:82bedbd0 r8:82beda68 r7:8025a6c8 r6:00000001 r5:8588a580 r4:8025a6c8 [<81b1f618>] (preempt_schedule) from [<8025a6c8>] (__local_bh_enable_ip+0x6c/0xd0 kernel/softirq.c:457) r7:e0411c10 r6:00000000 r5:00000001 r4:8588a580 [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:196 [inline]) [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (_raw_spin_unlock_bh+0x34/0x38 kernel/locking/spinlock.c:214) r5:861e7000 r4:82bedbc0 [<81b28650>] (_raw_spin_unlock_bh) from [<8163aeec>] (spin_unlock_bh include/linux/spinlock.h:396 [inline]) [<81b28650>] (_raw_spin_unlock_bh) from [<8163aeec>] (__neigh_ifdown+0xb8/0x374 net/core/neighbour.c:472) [<8163ae34>] (__neigh_ifdown) from [<8163b1d8>] (neigh_ifdown+0x14/0x1c net/core/neighbour.c:491) r10:00000006 r9:861e7000 r8:858f0e10 r7:00000026 r6:858f0e00 r5:85e58000 r4:86293000 [<8163b1c4>] (neigh_ifdown) from [<8183f540>] (arp_ifdown+0x1c/0x24 net/ipv4/arp.c:1367) [<8183f524>] (arp_ifdown) from [<81846eec>] (inetdev_destroy net/ipv4/devinet.c:336 [inline]) [<8183f524>] (arp_ifdown) from [<81846eec>] (inetdev_event+0x218/0x698 net/ipv4/devinet.c:1655) [<81846cd4>] (inetdev_event) from [<80285f14>] (notifier_call_chain+0x8c/0x220 kernel/notifier.c:85) r10:00000006 r9:00000000 r8:fffffff0 r7:00000002 r6:82bee3bc r5:82bee4c4 r4:81846cd4 [<80285e88>] (notifier_call_chain) from [<8028618c>] (raw_notifier_call_chain+0x20/0x28 kernel/notifier.c:453) r10:8162dc40 r9:00000000 r8:861e7648 r7:00000002 r6:85e58000 r5:00000006 r4:e0411da4 [<8028616c>] (raw_notifier_call_chain) from [<816222c8>] (call_netdevice_notifiers_info+0x54/0xa0 net/core/dev.c:2249) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (call_netdevice_notifiers_extack net/core/dev.c:2287 [inline]) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (call_netdevice_notifiers net/core/dev.c:2301 [inline]) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (unregister_netdevice_many_notify+0x600/0xc1c net/core/dev.c:12421) r6:00000180 r5:00000000 r4:861e7000 [<8162e468>] (unregister_netdevice_many_notify) from [<8162fef8>] (unregister_netdevice_many net/core/dev.c:12484 [inline]) [<8162e468>] (unregister_netdevice_many_notify) from [<8162fef8>] (default_device_exit_batch+0x304/0x384 net/core/dev.c:13076) r10:85e58190 r9:85e58000 r8:82e30c80 r7:e0411e98 r6:85e58190 r5:e0411eb8 r4:85e58094 [<8162fbf4>] (default_device_exit_batch) from [<8160f4ac>] (ops_exit_list net/core/net_namespace.c:205 [inline]) [<8162fbf4>] (default_device_exit_batch) from [<8160f4ac>] (ops_undo_list+0x10c/0x238 net/core/net_namespace.c:252) r10:00000001 r9:e0411e58 r8:82bdec98 r7:82bdf2ac r6:82bdec98 r5:e0411e98 r4:e0411eb8 [<8160f3a0>] (ops_undo_list) from [<81611c90>] (cleanup_net+0x208/0x358 net/core/net_namespace.c:702) r10:85e5a000 r9:82bdec7c r8:00000cc0 r7:85e58020 r6:e0411eb8 r5:ffffffd4 r4:82e30c40 [<81611a88>] (cleanup_net) from [<80276084>] (process_one_work+0x1c8/0x5a0 kernel/workqueue.c:3314) r10:8302d215 r9:8588a580 r8:02000000 r7:83012a00 r6:8302d200 r5:82bdec6c r4:8613de00 [<80275ebc>] (process_one_work) from [<80276d50>] (process_scheduled_works kernel/workqueue.c:3397 [inline]) [<80275ebc>] (process_one_work) from [<80276d50>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3478) r10:00000000 r9:8613de30 r8:8588a580 r7:82a03d80 r6:83012a20 r5:83012a00 r4:8613de00 [<80276be4>] (worker_thread) from [<80281590>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:df8dde88 r8:8601ff80 r7:8613de00 r6:80276be4 r5:8588a580 r4:864b8980 [<80281474>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe0411fb0 to 0xe0411ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80281474 r4:864b8980 INFO: task syz-executor:27097 blocked for more than 446 seconds. Tainted: G L syzkaller #0 Blocked by coredump. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:27097 tgid:27097 ppid:1 task_flags:0x40054c flags:0x00000005 Call trace: [<81b1df3c>] (__schedule) from [<81b1f3d0>] (__schedule_loop kernel/sched/core.c:7268 [inline]) [<81b1df3c>] (__schedule) from [<81b1f3d0>] (schedule+0x2c/0x134 kernel/sched/core.c:7283) r10:e0249d84 r9:e0249d8c r8:00000002 r7:600d0013 r6:82e31da8 r5:83e0d780 r4:83e0d780 [<81b1f3a4>] (schedule) from [<81b1f55c>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7340) r5:83e0d780 r4:82e31da4 [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock_common kernel/locking/mutex.c:726 [inline]) [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock.constprop.0+0x530/0xa88 kernel/locking/mutex.c:820) [<81b2210c>] (__mutex_lock.constprop.0) from [<81b22c68>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1114) r10:84f9cfc0 r9:00000000 r8:830e9910 r7:841514a0 r6:834dddd0 r5:0c0e001b r4:d22c0000 [<81b22c54>] (__mutex_lock_slowpath) from [<81b22ca8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:319) [<81b22c6c>] (mutex_lock) from [<8163d258>] (rtnl_lock+0x14/0x1c net/core/rtnetlink.c:80) [<8163d244>] (rtnl_lock) from [<80db482c>] (tun_detach drivers/net/tun.c:634 [inline]) [<8163d244>] (rtnl_lock) from [<80db482c>] (tun_chr_close+0x14/0xa8 drivers/net/tun.c:3441) [<80db4818>] (tun_chr_close) from [<80588b58>] (__fput+0xd8/0x2f4 fs/file_table.c:510) r5:0c0e001b r4:8800dd80 [<80588a80>] (__fput) from [<80588e08>] (____fput+0x14/0x18 fs/file_table.c:538) r9:00000000 r8:83e0e054 r7:82c7c6ac r6:83e0d780 r5:83e0e020 r4:864cfc58 [<80588df4>] (____fput) from [<8027d5dc>] (task_work_run+0x8c/0xb4 kernel/task_work.c:233) [<8027d550>] (task_work_run) from [<80257770>] (exit_task_work include/linux/task_work.h:40 [inline]) [<8027d550>] (task_work_run) from [<80257770>] (do_exit+0x2cc/0xb04 kernel/exit.c:976) r9:00000000 r8:e0249e90 r7:83e0e050 r6:859dd78c r5:859dd680 r4:83e0d780 [<802574a4>] (do_exit) from [<80258178>] (do_group_exit+0x40/0x8c kernel/exit.c:1119) r7:00000122 [<80258138>] (do_group_exit) from [<802691f0>] (get_signal+0xa8c/0xab4 kernel/signal.c:3038) r7:00000122 r4:83e0d780 [<80268764>] (get_signal) from [<8022a640>] (do_signal arch/arm/kernel/signal.c:579 [inline]) [<80268764>] (get_signal) from [<8022a640>] (do_work_pending+0x124/0x4f0 arch/arm/kernel/signal.c:619) r10:00000122 r9:83e0d780 r8:00000040 r7:00000122 r6:8020029c r5:e0249fb0 r4:83e0d780 [<8022a51c>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x24) Exception stack(0xe0249fb0 to 0xe0249ff8) 9fa0: 00000040 00e74218 00000040 00000000 9fc0: 7ec6d4f4 0000000c 00000040 00000122 00000010 00000001 00e74218 00e74230 9fe0: 00000001 7ec6d488 0010b9d4 0010ba64 20000010 00000003 r10:00000122 r9:83e0d780 r8:8020029c r7:00000122 r6:00000040 r5:0000000c r4:7ec6d4f4 INFO: task syz-executor:27097 is blocked on a mutex likely owned by task kworker/u8:0:27439. task:kworker/u8:0 state:R running task stack:0 pid:27439 tgid:27439 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: netns cleanup_net Call trace: [<81b1df3c>] (__schedule) from [<81b1f664>] (preempt_schedule_common kernel/sched/core.c:7370 [inline]) [<81b1df3c>] (__schedule) from [<81b1f664>] (preempt_schedule+0x4c/0xb4 kernel/sched/core.c:7394) r10:00000006 r9:82bedbd0 r8:82beda68 r7:8025a6c8 r6:00000001 r5:8588a580 r4:8025a6c8 [<81b1f618>] (preempt_schedule) from [<8025a6c8>] (__local_bh_enable_ip+0x6c/0xd0 kernel/softirq.c:457) r7:e0411c10 r6:00000000 r5:00000001 r4:8588a580 [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:196 [inline]) [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (_raw_spin_unlock_bh+0x34/0x38 kernel/locking/spinlock.c:214) r5:861e7000 r4:82bedbc0 [<81b28650>] (_raw_spin_unlock_bh) from [<8163aeec>] (spin_unlock_bh include/linux/spinlock.h:396 [inline]) [<81b28650>] (_raw_spin_unlock_bh) from [<8163aeec>] (__neigh_ifdown+0xb8/0x374 net/core/neighbour.c:472) [<8163ae34>] (__neigh_ifdown) from [<8163b1d8>] (neigh_ifdown+0x14/0x1c net/core/neighbour.c:491) r10:00000006 r9:861e7000 r8:858f0e10 r7:00000026 r6:858f0e00 r5:85e58000 r4:86293000 [<8163b1c4>] (neigh_ifdown) from [<8183f540>] (arp_ifdown+0x1c/0x24 net/ipv4/arp.c:1367) [<8183f524>] (arp_ifdown) from [<81846eec>] (inetdev_destroy net/ipv4/devinet.c:336 [inline]) [<8183f524>] (arp_ifdown) from [<81846eec>] (inetdev_event+0x218/0x698 net/ipv4/devinet.c:1655) [<81846cd4>] (inetdev_event) from [<80285f14>] (notifier_call_chain+0x8c/0x220 kernel/notifier.c:85) r10:00000006 r9:00000000 r8:fffffff0 r7:00000002 r6:82bee3bc r5:82bee4c4 r4:81846cd4 [<80285e88>] (notifier_call_chain) from [<8028618c>] (raw_notifier_call_chain+0x20/0x28 kernel/notifier.c:453) r10:8162dc40 r9:00000000 r8:861e7648 r7:00000002 r6:85e58000 r5:00000006 r4:e0411da4 [<8028616c>] (raw_notifier_call_chain) from [<816222c8>] (call_netdevice_notifiers_info+0x54/0xa0 net/core/dev.c:2249) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (call_netdevice_notifiers_extack net/core/dev.c:2287 [inline]) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (call_netdevice_notifiers net/core/dev.c:2301 [inline]) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (unregister_netdevice_many_notify+0x600/0xc1c net/core/dev.c:12421) r6:00000180 r5:00000000 r4:861e7000 [<8162e468>] (unregister_netdevice_many_notify) from [<8162fef8>] (unregister_netdevice_many net/core/dev.c:12484 [inline]) [<8162e468>] (unregister_netdevice_many_notify) from [<8162fef8>] (default_device_exit_batch+0x304/0x384 net/core/dev.c:13076) r10:85e58190 r9:85e58000 r8:82e30c80 r7:e0411e98 r6:85e58190 r5:e0411eb8 r4:85e58094 [<8162fbf4>] (default_device_exit_batch) from [<8160f4ac>] (ops_exit_list net/core/net_namespace.c:205 [inline]) [<8162fbf4>] (default_device_exit_batch) from [<8160f4ac>] (ops_undo_list+0x10c/0x238 net/core/net_namespace.c:252) r10:00000001 r9:e0411e58 r8:82bdec98 r7:82bdf2ac r6:82bdec98 r5:e0411e98 r4:e0411eb8 [<8160f3a0>] (ops_undo_list) from [<81611c90>] (cleanup_net+0x208/0x358 net/core/net_namespace.c:702) r10:85e5a000 r9:82bdec7c r8:00000cc0 r7:85e58020 r6:e0411eb8 r5:ffffffd4 r4:82e30c40 [<81611a88>] (cleanup_net) from [<80276084>] (process_one_work+0x1c8/0x5a0 kernel/workqueue.c:3314) r10:8302d215 r9:8588a580 r8:02000000 r7:83012a00 r6:8302d200 r5:82bdec6c r4:8613de00 [<80275ebc>] (process_one_work) from [<80276d50>] (process_scheduled_works kernel/workqueue.c:3397 [inline]) [<80275ebc>] (process_one_work) from [<80276d50>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3478) r10:00000000 r9:8613de30 r8:8588a580 r7:82a03d80 r6:83012a20 r5:83012a00 r4:8613de00 [<80276be4>] (worker_thread) from [<80281590>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:df8dde88 r8:8601ff80 r7:8613de00 r6:80276be4 r5:8588a580 r4:864b8980 [<80281474>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe0411fb0 to 0xe0411ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80281474 r4:864b8980 INFO: task syz-executor:27543 blocked for more than 426 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:27543 tgid:27543 ppid:1 task_flags:0x400140 flags:0x00000001 Call trace: [<81b1df3c>] (__schedule) from [<81b1f3d0>] (__schedule_loop kernel/sched/core.c:7268 [inline]) [<81b1df3c>] (__schedule) from [<81b1f3d0>] (schedule+0x2c/0x134 kernel/sched/core.c:7283) r10:ea805b94 r9:ea805b9c r8:00000002 r7:60000013 r6:82e31da8 r5:84700c80 r4:84700c80 [<81b1f3a4>] (schedule) from [<81b1f55c>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7340) r5:84700c80 r4:82e31da4 [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock_common kernel/locking/mutex.c:726 [inline]) [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock.constprop.0+0x530/0xa88 kernel/locking/mutex.c:820) [<81b2210c>] (__mutex_lock.constprop.0) from [<81b22c68>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1114) r10:ea805d30 r9:00000000 r8:85829200 r7:00000000 r6:00000000 r5:85a06000 r4:00000000 [<81b22c54>] (__mutex_lock_slowpath) from [<81b22ca8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:319) [<81b22c6c>] (mutex_lock) from [<8164359c>] (rtnl_lock net/core/rtnetlink.c:80 [inline]) [<81b22c6c>] (mutex_lock) from [<8164359c>] (rtnl_nets_lock net/core/rtnetlink.c:341 [inline]) [<81b22c6c>] (mutex_lock) from [<8164359c>] (rtnl_newlink+0x338/0xad8 net/core/rtnetlink.c:4109) [<81643264>] (rtnl_newlink) from [<8163fa38>] (rtnetlink_rcv_msg+0x2dc/0x340 net/core/rtnetlink.c:6997) r10:00000000 r9:00000000 r8:82e31da0 r7:8672d0c0 r6:00000000 r5:81643264 r4:85829200 [<8163f75c>] (rtnetlink_rcv_msg) from [<81727274>] (netlink_rcv_skb+0xc0/0x120 net/netlink/af_netlink.c:2555) r10:863cd584 r9:82e30c80 r8:8672d0c0 r7:85829200 r6:8163f75c r5:8672d0c0 r4:00000000 [<817271b4>] (netlink_rcv_skb) from [<8163e3f8>] (rtnetlink_rcv+0x18/0x1c net/core/rtnetlink.c:7024) r7:83847580 r6:0000002c r5:83804064 r4:83804000 [<8163e3e0>] (rtnetlink_rcv) from [<81726a40>] (netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]) [<8163e3e0>] (rtnetlink_rcv) from [<81726a40>] (netlink_unicast+0x270/0x380 net/netlink/af_netlink.c:1344) [<817267d0>] (netlink_unicast) from [<81726d18>] (netlink_sendmsg+0x1c8/0x444 net/netlink/af_netlink.c:1899) r10:00000000 r9:00000000 r8:00000000 r7:863cd400 r6:0000002c r5:8672d0c0 r4:ea805e98 [<81726b50>] (netlink_sendmsg) from [<815ecfa8>] (sock_sendmsg_nosec net/socket.c:787 [inline]) [<81726b50>] (netlink_sendmsg) from [<815ecfa8>] (__sock_sendmsg+0x44/0x78 net/socket.c:802) r10:00000122 r9:8655d380 r8:835b3440 r7:7ef16a54 r6:835b3440 r5:ea805e98 r4:00000000 [<815ecf64>] (__sock_sendmsg) from [<815efe50>] (__sys_sendto+0x110/0x160 net/socket.c:2265) r7:7ef16a54 r6:8655d380 r5:00000000 r4:00000000 [<815efd40>] (__sys_sendto) from [<815efebc>] (__do_sys_sendto net/socket.c:2272 [inline]) [<815efd40>] (__sys_sendto) from [<815efebc>] (sys_sendto+0x1c/0x24 net/socket.c:2268) r9:84700c80 r8:8020029c r7:00000122 r6:0000002c r5:0000000c r4:7ef16a54 [<815efea0>] (sys_sendto) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xea805fa8 to 0xea805ff0) 5fa0: 7ef16a54 0000000c 00000003 00e74218 0000002c 00000000 5fc0: 7ef16a54 0000000c 0000002c 00000122 00000000 00000001 00e74218 00000000 5fe0: 00000001 7ef169e8 0010b9d4 0010ba64 INFO: task syz-executor:27543 is blocked on a mutex likely owned by task kworker/u8:0:27439. task:kworker/u8:0 state:R running task stack:0 pid:27439 tgid:27439 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: netns cleanup_net Call trace: [<81b1df3c>] (__schedule) from [<81b1f664>] (preempt_schedule_common kernel/sched/core.c:7370 [inline]) [<81b1df3c>] (__schedule) from [<81b1f664>] (preempt_schedule+0x4c/0xb4 kernel/sched/core.c:7394) r10:00000006 r9:82bedbd0 r8:82beda68 r7:8025a6c8 r6:00000001 r5:8588a580 r4:8025a6c8 [<81b1f618>] (preempt_schedule) from [<8025a6c8>] (__local_bh_enable_ip+0x6c/0xd0 kernel/softirq.c:457) r7:e0411c10 r6:00000000 r5:00000001 r4:8588a580 [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:196 [inline]) [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (_raw_spin_unlock_bh+0x34/0x38 kernel/locking/spinlock.c:214) r5:861e7000 r4:82bedbc0 [<81b28650>] (_raw_spin_unlock_bh) from [<8163aeec>] (spin_unlock_bh include/linux/spinlock.h:396 [inline]) [<81b28650>] (_raw_spin_unlock_bh) from [<8163aeec>] (__neigh_ifdown+0xb8/0x374 net/core/neighbour.c:472) [<8163ae34>] (__neigh_ifdown) from [<8163b1d8>] (neigh_ifdown+0x14/0x1c net/core/neighbour.c:491) r10:00000006 r9:861e7000 r8:858f0e10 r7:00000026 r6:858f0e00 r5:85e58000 r4:86293000 [<8163b1c4>] (neigh_ifdown) from [<8183f540>] (arp_ifdown+0x1c/0x24 net/ipv4/arp.c:1367) [<8183f524>] (arp_ifdown) from [<81846eec>] (inetdev_destroy net/ipv4/devinet.c:336 [inline]) [<8183f524>] (arp_ifdown) from [<81846eec>] (inetdev_event+0x218/0x698 net/ipv4/devinet.c:1655) [<81846cd4>] (inetdev_event) from [<80285f14>] (notifier_call_chain+0x8c/0x220 kernel/notifier.c:85) r10:00000006 r9:00000000 r8:fffffff0 r7:00000002 r6:82bee3bc r5:82bee4c4 r4:81846cd4 [<80285e88>] (notifier_call_chain) from [<8028618c>] (raw_notifier_call_chain+0x20/0x28 kernel/notifier.c:453) r10:8162dc40 r9:00000000 r8:861e7648 r7:00000002 r6:85e58000 r5:00000006 r4:e0411da4 [<8028616c>] (raw_notifier_call_chain) from [<816222c8>] (call_netdevice_notifiers_info+0x54/0xa0 net/core/dev.c:2249) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (call_netdevice_notifiers_extack net/core/dev.c:2287 [inline]) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (call_netdevice_notifiers net/core/dev.c:2301 [inline]) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (unregister_netdevice_many_notify+0x600/0xc1c net/core/dev.c:12421) r6:00000180 r5:00000000 r4:861e7000 [<8162e468>] (unregister_netdevice_many_notify) from [<8162fef8>] (unregister_netdevice_many net/core/dev.c:12484 [inline]) [<8162e468>] (unregister_netdevice_many_notify) from [<8162fef8>] (default_device_exit_batch+0x304/0x384 net/core/dev.c:13076) r10:85e58190 r9:85e58000 r8:82e30c80 r7:e0411e98 r6:85e58190 r5:e0411eb8 r4:85e58094 [<8162fbf4>] (default_device_exit_batch) from [<8160f4ac>] (ops_exit_list net/core/net_namespace.c:205 [inline]) [<8162fbf4>] (default_device_exit_batch) from [<8160f4ac>] (ops_undo_list+0x10c/0x238 net/core/net_namespace.c:252) r10:00000001 r9:e0411e58 r8:82bdec98 r7:82bdf2ac r6:82bdec98 r5:e0411e98 r4:e0411eb8 [<8160f3a0>] (ops_undo_list) from [<81611c90>] (cleanup_net+0x208/0x358 net/core/net_namespace.c:702) r10:85e5a000 r9:82bdec7c r8:00000cc0 r7:85e58020 r6:e0411eb8 r5:ffffffd4 r4:82e30c40 [<81611a88>] (cleanup_net) from [<80276084>] (process_one_work+0x1c8/0x5a0 kernel/workqueue.c:3314) r10:8302d215 r9:8588a580 r8:02000000 r7:83012a00 r6:8302d200 r5:82bdec6c r4:8613de00 [<80275ebc>] (process_one_work) from [<80276d50>] (process_scheduled_works kernel/workqueue.c:3397 [inline]) [<80275ebc>] (process_one_work) from [<80276d50>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3478) r10:00000000 r9:8613de30 r8:8588a580 r7:82a03d80 r6:83012a20 r5:83012a00 r4:8613de00 [<80276be4>] (worker_thread) from [<80281590>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:df8dde88 r8:8601ff80 r7:8613de00 r6:80276be4 r5:8588a580 r4:864b8980 [<80281474>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe0411fb0 to 0xe0411ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80281474 r4:864b8980 INFO: task syz.3.8323:27547 blocked for more than 447 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.8323 state:D stack:0 pid:27547 tgid:27546 ppid:26606 task_flags:0x400140 flags:0x00000001 Call trace: [<81b1df3c>] (__schedule) from [<81b1f3d0>] (__schedule_loop kernel/sched/core.c:7268 [inline]) [<81b1df3c>] (__schedule) from [<81b1f3d0>] (schedule+0x2c/0x134 kernel/sched/core.c:7283) r10:ea831d7c r9:ea831d84 r8:00000002 r7:60000113 r6:82e31da8 r5:8484a580 r4:8484a580 [<81b1f3a4>] (schedule) from [<81b1f55c>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7340) r5:8484a580 r4:82e31da4 [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock_common kernel/locking/mutex.c:726 [inline]) [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock.constprop.0+0x530/0xa88 kernel/locking/mutex.c:820) [<81b2210c>] (__mutex_lock.constprop.0) from [<81b22c68>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1114) r10:85c67000 r9:85c673f4 r8:85c67000 r7:ea831e00 r6:859fad00 r5:85c67550 r4:864a1c40 [<81b22c54>] (__mutex_lock_slowpath) from [<81b22ca8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:319) [<81b22c6c>] (mutex_lock) from [<8163d258>] (rtnl_lock+0x14/0x1c net/core/rtnetlink.c:80) [<8163d244>] (rtnl_lock) from [<81874a98>] (mrtsock_destruct+0x3c/0xf4 net/ipv4/ipmr.c:1381) [<81874a5c>] (mrtsock_destruct) from [<817f3120>] (ip_ra_control+0xb0/0x1b8 net/ipv4/ip_sockglue.c:374) r8:00000000 r7:00000000 r6:00000000 r5:859fad00 r4:864a1c40 [<817f3070>] (ip_ra_control) from [<81830214>] (raw_close+0x1c/0x28 net/ipv4/raw.c:689) r10:00000126 r9:8484a580 r8:83842910 r7:00000000 r6:81e79d80 r5:859fad00 r4:859fad00 r3:818301f8 [<818301f8>] (raw_close) from [<8184905c>] (inet_release+0x44/0x6c net/ipv4/af_inet.c:442) r5:859fad00 r4:856ed940 [<81849018>] (inet_release) from [<815eb89c>] (__sock_release+0x44/0xbc net/socket.c:722) r5:856eda40 r4:856ed940 [<815eb858>] (__sock_release) from [<815eb92c>] (sock_close+0x18/0x20 net/socket.c:1514) r7:856ed9c0 r6:85052198 r5:0c2e0003 r4:8653f200 [<815eb914>] (sock_close) from [<80588b58>] (__fput+0xd8/0x2f4 fs/file_table.c:510) [<80588a80>] (__fput) from [<80588e08>] (____fput+0x14/0x18 fs/file_table.c:538) r9:8484a580 r8:8484ae54 r7:82c7c6ac r6:8484a580 r5:8484ae20 r4:00000000 [<80588df4>] (____fput) from [<8027d5dc>] (task_work_run+0x8c/0xb4 kernel/task_work.c:233) [<8027d550>] (task_work_run) from [<8022a968>] (resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]) [<8027d550>] (task_work_run) from [<8022a968>] (do_work_pending+0x44c/0x4f0 arch/arm/kernel/signal.c:632) r9:8484a580 r8:8020029c r7:00000126 r6:8020029c r5:ea831fb0 r4:8484a580 [<8022a51c>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x24) Exception stack(0xea831fb0 to 0xea831ff8) 1fa0: 00000000 00000000 000000c8 20000100 1fc0: 00000004 00000000 00346318 00000126 003462d8 00000000 00000001 76f0e0dc 1fe0: 76f0de88 76f0de78 00018ebc 00130810 60000010 00000003 r10:00000126 r9:8484a580 r8:8020029c r7:00000126 r6:00346318 r5:00000000 r4:00000004 INFO: task syz.3.8323:27547 is blocked on a mutex likely owned by task kworker/u8:0:27439. task:kworker/u8:0 state:R running task stack:0 pid:27439 tgid:27439 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: netns cleanup_net Call trace: [] (0xe0411bb4) from [] (0xe0411bfc) Backtrace aborted due to bad frame pointer <81b2890c> INFO: task syz-executor:27554 blocked for more than 426 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:27554 tgid:27554 ppid:1 task_flags:0x400140 flags:0x00000001 Call trace: [<81b1df3c>] (__schedule) from [<81b1f3d0>] (__schedule_loop kernel/sched/core.c:7268 [inline]) [<81b1df3c>] (__schedule) from [<81b1f3d0>] (schedule+0x2c/0x134 kernel/sched/core.c:7283) r10:ea82dbd4 r9:ea82dbdc r8:00000002 r7:60000013 r6:82e31da8 r5:83e13e80 r4:83e13e80 [<81b1f3a4>] (schedule) from [<81b1f55c>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7340) r5:83e13e80 r4:82e31da4 [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock_common kernel/locking/mutex.c:726 [inline]) [<81b1f544>] (schedule_preempt_disabled) from [<81b2263c>] (__mutex_lock.constprop.0+0x530/0xa88 kernel/locking/mutex.c:820) [<81b2210c>] (__mutex_lock.constprop.0) from [<81b22c68>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1114) r10:ffffffff r9:ffffffff r8:8672d240 r7:ea82dd30 r6:81e79a78 r5:858f9440 r4:00000000 [<81b22c54>] (__mutex_lock_slowpath) from [<81b22ca8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:319) [<81b22c6c>] (mutex_lock) from [<8163d258>] (rtnl_lock+0x14/0x1c net/core/rtnetlink.c:80) [<8163d244>] (rtnl_lock) from [<81845384>] (rtnl_net_lock include/linux/rtnetlink.h:130 [inline]) [<8163d244>] (rtnl_lock) from [<81845384>] (inet_rtm_newaddr+0xf4/0x51c net/ipv4/devinet.c:978) [<81845290>] (inet_rtm_newaddr) from [<8163fa38>] (rtnetlink_rcv_msg+0x2dc/0x340 net/core/rtnetlink.c:6997) r10:00000000 r9:00000000 r8:82e31da0 r7:8672d240 r6:00000002 r5:81845290 r4:858f9440 [<8163f75c>] (rtnetlink_rcv_msg) from [<81727274>] (netlink_rcv_skb+0xc0/0x120 net/netlink/af_netlink.c:2555) r10:867acd84 r9:82e30c80 r8:8672d240 r7:858f9440 r6:8163f75c r5:8672d240 r4:00000000 [<817271b4>] (netlink_rcv_skb) from [<8163e3f8>] (rtnetlink_rcv+0x18/0x1c net/core/rtnetlink.c:7024) r7:83847580 r6:00000028 r5:83804064 r4:83804000 [<8163e3e0>] (rtnetlink_rcv) from [<81726a40>] (netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]) [<8163e3e0>] (rtnetlink_rcv) from [<81726a40>] (netlink_unicast+0x270/0x380 net/netlink/af_netlink.c:1344) [<817267d0>] (netlink_unicast) from [<81726d18>] (netlink_sendmsg+0x1c8/0x444 net/netlink/af_netlink.c:1899) r10:00000000 r9:00000000 r8:00000000 r7:867acc00 r6:00000028 r5:8672d240 r4:ea82de98 [<81726b50>] (netlink_sendmsg) from [<815ecfa8>] (sock_sendmsg_nosec net/socket.c:787 [inline]) [<81726b50>] (netlink_sendmsg) from [<815ecfa8>] (__sock_sendmsg+0x44/0x78 net/socket.c:802) r10:00000122 r9:85c78000 r8:85700540 r7:7e9c5a44 r6:85700540 r5:ea82de98 r4:00000000 [<815ecf64>] (__sock_sendmsg) from [<815efe50>] (__sys_sendto+0x110/0x160 net/socket.c:2265) r7:7e9c5a44 r6:85c78000 r5:00000000 r4:00000000 [<815efd40>] (__sys_sendto) from [<815efebc>] (__do_sys_sendto net/socket.c:2272 [inline]) [<815efd40>] (__sys_sendto) from [<815efebc>] (sys_sendto+0x1c/0x24 net/socket.c:2268) r9:83e13e80 r8:8020029c r7:00000122 r6:00000028 r5:0000000c r4:7e9c5a44 [<815efea0>] (sys_sendto) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xea82dfa8 to 0xea82dff0) dfa0: 7e9c5a44 0000000c 00000003 00e74218 00000028 00000000 dfc0: 7e9c5a44 0000000c 00000028 00000122 00000004 00000001 00e74218 00e74230 dfe0: 00000001 7e9c59d8 0010b9d4 0010ba64 INFO: task syz-executor:27554 is blocked on a mutex likely owned by task kworker/u8:0:27439. task:kworker/u8:0 state:R running task stack:0 pid:27439 tgid:27439 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: netns cleanup_net Call trace: [<81b1df3c>] (__schedule) from [<81b1f664>] (preempt_schedule_common kernel/sched/core.c:7370 [inline]) [<81b1df3c>] (__schedule) from [<81b1f664>] (preempt_schedule+0x4c/0xb4 kernel/sched/core.c:7394) r10:85e587e4 r9:867d6844 r8:00000048 r7:8025a6c8 r6:00000001 r5:8588a580 r4:8025a6c8 [<81b1f618>] (preempt_schedule) from [<8025a6c8>] (__local_bh_enable_ip+0x6c/0xd0 kernel/softirq.c:457) r7:e0411c20 r6:00000000 r5:00000001 r4:8588a580 [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:196 [inline]) [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (_raw_spin_unlock_bh+0x34/0x38 kernel/locking/spinlock.c:214) r5:00000000 r4:85528400 [<81b28650>] (_raw_spin_unlock_bh) from [<818f99e4>] (spin_unlock_bh include/linux/spinlock.h:396 [inline]) [<81b28650>] (_raw_spin_unlock_bh) from [<818f99e4>] (addrconf_ifdown+0x150/0x768 net/ipv6/addrconf.c:3919) [<818f9894>] (addrconf_ifdown) from [<8190022c>] (addrconf_notify+0x60/0x8d0 net/ipv6/addrconf.c:3788) r10:00000006 r9:00000000 r8:e0411da4 r7:85e58000 r6:00000006 r5:85528400 r4:861e7000 [<819001cc>] (addrconf_notify) from [<80285f14>] (notifier_call_chain+0x8c/0x220 kernel/notifier.c:85) r10:00000006 r9:00000000 r8:ffffffd1 r7:00000002 r6:82bf1698 r5:82bf23d0 r4:819001cc [<80285e88>] (notifier_call_chain) from [<8028618c>] (raw_notifier_call_chain+0x20/0x28 kernel/notifier.c:453) r10:8162dc40 r9:00000000 r8:861e7648 r7:00000002 r6:85e58000 r5:00000006 r4:e0411da4 [<8028616c>] (raw_notifier_call_chain) from [<816222c8>] (call_netdevice_notifiers_info+0x54/0xa0 net/core/dev.c:2249) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (call_netdevice_notifiers_extack net/core/dev.c:2287 [inline]) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (call_netdevice_notifiers net/core/dev.c:2301 [inline]) [<81622274>] (call_netdevice_notifiers_info) from [<8162ea68>] (unregister_netdevice_many_notify+0x600/0xc1c net/core/dev.c:12421) r6:00000180 r5:00000000 r4:861e7000 [<8162e468>] (unregister_netdevice_many_notify) from [<8162fef8>] (unregister_netdevice_many net/core/dev.c:12484 [inline]) [<8162e468>] (unregister_netdevice_many_notify) from [<8162fef8>] (default_device_exit_batch+0x304/0x384 net/core/dev.c:13076) r10:85e58190 r9:85e58000 r8:82e30c80 r7:e0411e98 r6:85e58190 r5:e0411eb8 r4:85e58094 [<8162fbf4>] (default_device_exit_batch) from [<8160f4ac>] (ops_exit_list net/core/net_namespace.c:205 [inline]) [<8162fbf4>] (default_device_exit_batch) from [<8160f4ac>] (ops_undo_list+0x10c/0x238 net/core/net_namespace.c:252) r10:00000001 r9:e0411e58 r8:82bdec98 r7:82bdf2ac r6:82bdec98 r5:e0411e98 r4:e0411eb8 [<8160f3a0>] (ops_undo_list) from [<81611c90>] (cleanup_net+0x208/0x358 net/core/net_namespace.c:702) r10:85e5a000 r9:82bdec7c r8:00000cc0 r7:85e58020 r6:e0411eb8 r5:ffffffd4 r4:82e30c40 [<81611a88>] (cleanup_net) from [<80276084>] (process_one_work+0x1c8/0x5a0 kernel/workqueue.c:3314) r10:8302d215 r9:8588a580 r8:02000000 r7:83012a00 r6:8302d200 r5:82bdec6c r4:8613de00 [<80275ebc>] (process_one_work) from [<80276d50>] (process_scheduled_works kernel/workqueue.c:3397 [inline]) [<80275ebc>] (process_one_work) from [<80276d50>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3478) r10:00000000 r9:8613de30 r8:8588a580 r7:82a03d80 r6:83012a20 r5:83012a00 r4:8613de00 [<80276be4>] (worker_thread) from [<80281590>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:df8dde88 r8:8601ff80 r7:8613de00 r6:80276be4 r5:8588a580 r4:864b8980 [<80281474>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe0411fb0 to 0xe0411ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80281474 r4:864b8980 NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 29 Comm: khungtaskd Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: ARM-Versatile Express Call trace: [<80201a14>] (dump_backtrace) from [<80201b08>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:60070193 r6:60070193 r5:8231e144 r4:00000000 [<80201af0>] (show_stack) from [<8021e37c>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201af0>] (show_stack) from [<8021e37c>] (dump_stack_lvl+0x5c/0x70 lib/dump_stack.c:120) [<8021e320>] (dump_stack_lvl) from [<8021e3a8>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r7:00000000 r6:00070113 r5:00000000 r4:00000001 [<8021e390>] (dump_stack) from [<81b07814>] (nmi_cpu_backtrace+0x150/0x170 lib/nmi_backtrace.c:113) [<81b076c4>] (nmi_cpu_backtrace) from [<81b07964>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000000 r6:82a0b550 r5:82a1a2b8 r4:ffffffff [<81b07834>] (nmi_trigger_cpumask_backtrace) from [<8022f104>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852) r9:82a0b6d8 r8:00000048 r7:0000000a r6:82a03d80 r5:00007f2f r4:00000048 [<8022f0ec>] (arch_trigger_cpumask_backtrace) from [<81b0f4b0>] (trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]) [<8022f0ec>] (arch_trigger_cpumask_backtrace) from [<81b0f4b0>] (__sys_info lib/sys_info.c:157 [inline]) [<8022f0ec>] (arch_trigger_cpumask_backtrace) from [<81b0f4b0>] (sys_info+0x68/0xa8 lib/sys_info.c:165) [<81b0f448>] (sys_info) from [<8038acf0>] (check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]) [<81b0f448>] (sys_info) from [<8038acf0>] (watchdog+0x3ac/0x858 kernel/hung_task.c:561) r5:00007f2f r4:00000007 [<8038a944>] (watchdog) from [<80281590>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:df819e58 r8:83355880 r7:00000000 r6:8038a944 r5:833e9900 r4:831f7400 [<80281474>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf8d5fb0 to 0xdf8d5ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80281474 r4:831f7400 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 24208 Comm: kworker/u8:11 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: ARM-Versatile Express Workqueue: events_unbound nsim_dev_trap_report_work PC is at mmioset+0x0/0xac arch/arm/lib/memset.S:20 LR is at selinux_ip_postroute+0x50/0x37c security/selinux/hooks.c:6097 pc : [<81ae9b00>] lr : [<807e50a8>] psr: 200f0013 sp : df8059d0 ip : df805a60 fp : df805a5c r10: 81e70bda r9 : 86415310 r8 : df805a94 r7 : 86759f00 r6 : df805a94 r5 : 86759f00 r4 : 00000000 r3 : 83975780 r2 : 00000030 r1 : 00000000 r0 : df8059fc Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 85a57580 DAC: 00000000 Call trace: frame pointer underflow [<807e5058>] (selinux_ip_postroute) from [<817511f4>] (nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]) [<807e5058>] (selinux_ip_postroute) from [<817511f4>] (nf_hook_slow+0x44/0x104 net/netfilter/core.c:619) r10:81e70bda r9:86415310 r8:df805a94 r7:86759f00 r6:86415300 r5:00000002 r4:00000001 [<817511b0>] (nf_hook_slow) from [<817eef6c>] (nf_hook include/linux/netfilter.h:273 [inline]) [<817511b0>] (nf_hook_slow) from [<817eef6c>] (NF_HOOK_COND include/linux/netfilter.h:306 [inline]) [<817511b0>] (nf_hook_slow) from [<817eef6c>] (ip_output+0xe4/0x104 net/ipv4/ip_output.c:438) r10:8339cc40 r9:8339cc54 r8:86b35000 r7:00000000 r6:00000000 r5:85c67000 r4:86759f00 r3:00000000 [<817eee88>] (ip_output) from [<817f0540>] (dst_output include/net/dst.h:470 [inline]) [<817eee88>] (ip_output) from [<817f0540>] (ip_local_out+0x40/0x44 net/ipv4/ip_output.c:131) r8:df805b80 r7:85bb3181 r6:00000000 r5:85c67000 r4:86759f00 [<817f0500>] (ip_local_out) from [<81788428>] (synproxy_send_tcp+0x120/0x18c net/netfilter/nf_synproxy_core.c:444) r7:85bb3181 r6:85c67000 r5:880e1500 r4:86759f00 [<81788308>] (synproxy_send_tcp) from [<81788d0c>] (synproxy_send_client_synack+0x1a0/0x1f8 net/netfilter/nf_synproxy_core.c:489) r7:8672fa80 r6:8339dc14 r5:00000005 r4:86759f00 [<81788b6c>] (synproxy_send_client_synack) from [<817c46a8>] (nft_synproxy_eval_v4 net/netfilter/nft_synproxy.c:60 [inline]) [<81788b6c>] (synproxy_send_client_synack) from [<817c46a8>] (nft_synproxy_do_eval+0x2bc/0x37c net/netfilter/nft_synproxy.c:142) r10:81e766ec r9:8339cc54 r8:862f49c0 r7:833872d8 r6:df805c4c r5:85c67000 r4:8672fa80 [<817c43ec>] (nft_synproxy_do_eval) from [<817c4794>] (nft_synproxy_eval+0x14/0x18 net/netfilter/nft_synproxy.c:248) r9:df805ce8 r8:833872c8 r7:81e76990 r6:81e766ac r5:833872e0 r4:833872d0 [<817c4780>] (nft_synproxy_eval) from [<8178bd68>] (expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]) [<817c4780>] (nft_synproxy_eval) from [<8178bd68>] (nft_do_chain+0x130/0x57c net/netfilter/nf_tables_core.c:285) [<8178bc38>] (nft_do_chain) from [<817a62c8>] (nft_do_chain_inet+0x5c/0x150 net/netfilter/nft_chain_filter.c:162) r10:81e70bda r9:864edaa0 r8:df805d54 r7:8672fa80 r6:864eda80 r5:850e6a00 r4:00000000 [<817a626c>] (nft_do_chain_inet) from [<817511f4>] (nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]) [<817a626c>] (nft_do_chain_inet) from [<817511f4>] (nf_hook_slow+0x44/0x104 net/netfilter/core.c:619) r5:00000004 r4:00000001 [<817511b0>] (nf_hook_slow) from [<817e9e4c>] (nf_hook include/linux/netfilter.h:273 [inline]) [<817511b0>] (nf_hook_slow) from [<817e9e4c>] (NF_HOOK include/linux/netfilter.h:316 [inline]) [<817511b0>] (nf_hook_slow) from [<817e9e4c>] (ip_local_deliver+0xcc/0x10c net/ipv4/ip_input.c:262) r10:ddde6560 r9:ddde6448 r8:00000040 r7:00000000 r6:85c67000 r5:86b35000 r4:8672fa80 r3:00000000 [<817e9d80>] (ip_local_deliver) from [<817e95ac>] (dst_input include/net/dst.h:480 [inline]) [<817e9d80>] (ip_local_deliver) from [<817e95ac>] (ip_rcv_finish+0x98/0xb0 net/ipv4/ip_input.c:492) r6:86b35000 r5:85c67000 r4:8672fa80 [<817e9514>] (ip_rcv_finish) from [<817e9edc>] (NF_HOOK include/linux/netfilter.h:318 [inline]) [<817e9514>] (ip_rcv_finish) from [<817e9edc>] (NF_HOOK include/linux/netfilter.h:312 [inline]) [<817e9514>] (ip_rcv_finish) from [<817e9edc>] (ip_rcv+0x50/0xec net/ipv4/ip_input.c:612) r7:00000000 r6:85c67000 r5:86b35000 r4:8672fa80 [<817e9e8c>] (ip_rcv) from [<8162869c>] (__netif_receive_skb_one_core+0x60/0x84 net/core/dev.c:6202) r6:00000000 r5:817e9e8c r4:86b35000 [<8162863c>] (__netif_receive_skb_one_core) from [<81628708>] (__netif_receive_skb+0x18/0x5c net/core/dev.c:6315) r5:0000002a r4:8672fa80 [<816286f0>] (__netif_receive_skb) from [<81628a64>] (process_backlog+0xa0/0x17c net/core/dev.c:6666) r5:0000002a r4:8672fa80 [<816289c4>] (process_backlog) from [<81629250>] (__napi_poll+0x34/0x270 net/core/dev.c:7733) r10:df805ec8 r9:00000000 r8:0000012c r7:00000040 r6:df805ec3 r5:ddde6560 r4:00000001 [<8162921c>] (__napi_poll) from [<816297e8>] (napi_poll net/core/dev.c:7796 [inline]) [<8162921c>] (__napi_poll) from [<816297e8>] (net_rx_action+0x35c/0x3e8 net/core/dev.c:7953) r9:00000000 r8:0000012c r7:ddde6560 r6:ddde6564 r5:ddde6440 r4:ffffffff [<8162948c>] (net_rx_action) from [<80259fd0>] (handle_softirqs+0x160/0x4f4 kernel/softirq.c:622) r10:83975780 r9:00000002 r8:00000102 r7:0000000c r6:00000002 r5:00000003 r4:82a0308c [<80259e70>] (handle_softirqs) from [<802012f0>] (__do_softirq+0x14/0x18 kernel/softirq.c:656) r10:81d9ec00 r9:8613ed80 r8:00000000 r7:85e88e34 r6:00000060 r5:00000002 r4:600f0013 [<802012dc>] (__do_softirq) from [<802272a0>] (____do_softirq+0x10/0x14 arch/arm/kernel/irq.c:77) [<80227290>] (____do_softirq) from [<81ae7458>] (call_with_stack+0x1c/0x20 arch/arm/lib/call_with_stack.S:40) [<81ae743c>] (call_with_stack) from [<802272dc>] (do_softirq_own_stack+0x38/0x3c arch/arm/kernel/irq.c:82) [<802272a4>] (do_softirq_own_stack) from [<8025a654>] (do_softirq kernel/softirq.c:523 [inline]) [<802272a4>] (do_softirq_own_stack) from [<8025a654>] (do_softirq+0x5c/0x64 kernel/softirq.c:510) [<8025a5f8>] (do_softirq) from [<8025a728>] (__local_bh_enable_ip+0xcc/0xd0 kernel/softirq.c:450) r5:00000002 r4:83975780 [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:196 [inline]) [<8025a65c>] (__local_bh_enable_ip) from [<81b28684>] (_raw_spin_unlock_bh+0x34/0x38 kernel/locking/spinlock.c:214) r5:8613ed60 r4:86729a80 [<81b28650>] (_raw_spin_unlock_bh) from [<80ed33bc>] (spin_unlock_bh include/linux/spinlock.h:396 [inline]) [<81b28650>] (_raw_spin_unlock_bh) from [<80ed33bc>] (nsim_dev_trap_report drivers/net/netdevsim/dev.c:891 [inline]) [<81b28650>] (_raw_spin_unlock_bh) from [<80ed33bc>] (nsim_dev_trap_report_work+0x2f8/0x438 drivers/net/netdevsim/dev.c:922) [<80ed30c4>] (nsim_dev_trap_report_work) from [<80276084>] (process_one_work+0x1c8/0x5a0 kernel/workqueue.c:3314) r10:83029c05 r9:83975780 r8:02000000 r7:83012a00 r6:83029c00 r5:8613ed80 r4:8809c200 [<80275ebc>] (process_one_work) from [<80276d50>] (process_scheduled_works kernel/workqueue.c:3397 [inline]) [<80275ebc>] (process_one_work) from [<80276d50>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3478) r10:83012a00 r9:8809c230 r8:83975780 r7:82a03d80 r6:83012a20 r5:83012a00 r4:8809c200 [<80276be4>] (worker_thread) from [<80281590>] (kthread+0x11c/0x154 kernel/kthread.c:436) r10:00000000 r9:dfea9e88 r8:8809c180 r7:8809c200 r6:80276be4 r5:83975780 r4:8627aec0 [<80281474>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfeb1fb0 to 0xdfeb1ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80281474 r4:8627aec0