NOHZ: local_softirq_pending 08 NOHZ: local_softirq_pending 08 NOHZ: local_softirq_pending 08 NOHZ: local_softirq_pending 08 NOHZ: local_softirq_pending 08 INFO: task kworker/u4:4:2334 blocked for more than 140 seconds. Not tainted 4.14.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:4 D27232 2334 2 0x80000000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x8a6/0x1d70 kernel/sched/core.c:3384 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+0x5f0/0x1430 kernel/locking/mutex.c:893 ip6gre_exit_net+0x70/0x580 net/ipv6/ip6_gre.c:1206 ops_exit_list.isra.0+0x9d/0x140 net/core/net_namespace.c:142 cleanup_net+0x3bb/0x820 net/core/net_namespace.c:484 process_one_work+0x7c0/0x14c0 kernel/workqueue.c:2116 worker_thread+0x5d7/0x1080 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 INFO: task kworker/1:2:3333 blocked for more than 140 seconds. Not tainted 4.14.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:2 D27360 3333 2 0x80000000 Workqueue: events_power_efficient reg_check_chans_work Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x8a6/0x1d70 kernel/sched/core.c:3384 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+0x5f0/0x1430 kernel/locking/mutex.c:893 reg_check_chans_work+0x65/0xcc0 net/wireless/reg.c:1655 process_one_work+0x7c0/0x14c0 kernel/workqueue.c:2116 worker_thread+0x5d7/0x1080 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 INFO: task kworker/1:3:7292 blocked for more than 140 seconds. Not tainted 4.14.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:3 D26656 7292 2 0x80000000 Workqueue: events switchdev_deferred_process_work Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x8a6/0x1d70 kernel/sched/core.c:3384 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+0x5f0/0x1430 kernel/locking/mutex.c:893 switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 process_one_work+0x7c0/0x14c0 kernel/workqueue.c:2116 worker_thread+0x5d7/0x1080 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 INFO: task syz-executor.3:9676 blocked for more than 140 seconds. Not tainted 4.14.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28816 9676 6346 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x8a6/0x1d70 kernel/sched/core.c:3384 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+0x5f0/0x1430 kernel/locking/mutex.c:893 devinet_ioctl+0x166/0x1580 net/ipv4/devinet.c:1020 inet_ioctl+0xf6/0x190 net/ipv4/af_inet.c:900 packet_ioctl+0xab/0x280 net/packet/af_packet.c:4175 sock_do_ioctl+0x5f/0xa0 net/socket.c:974 sock_ioctl+0x28d/0x450 net/socket.c:1071 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45cba9 RSP: 002b:00007fa7abda4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004f54c0 RCX: 000000000045cba9 RDX: 0000000020000080 RSI: 0000000000008914 RDI: 0000000000000004 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000006df R14: 00000000004c9d8d R15: 00007fa7abda56d4 INFO: task syz-executor.3:9686 blocked for more than 140 seconds. Not tainted 4.14.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D30144 9686 6346 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x8a6/0x1d70 kernel/sched/core.c:3384 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+0x5f0/0x1430 kernel/locking/mutex.c:893 devinet_ioctl+0x166/0x1580 net/ipv4/devinet.c:1020 inet_ioctl+0xf6/0x190 net/ipv4/af_inet.c:900 packet_ioctl+0xab/0x280 net/packet/af_packet.c:4175 sock_do_ioctl+0x5f/0xa0 net/socket.c:974 sock_ioctl+0x28d/0x450 net/socket.c:1071 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45cba9 RSP: 002b:00007fa7abd83c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004f54c0 RCX: 000000000045cba9 RDX: 0000000020000100 RSI: 0000000000008914 RDI: 0000000000000004 RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000006df R14: 00000000004c9d8d R15: 00007fa7abd846d4 INFO: task syz-executor.0:9672 blocked for more than 140 seconds. Not tainted 4.14.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28816 9672 6343 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x8a6/0x1d70 kernel/sched/core.c:3384 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+0x5f0/0x1430 kernel/locking/mutex.c:893 devinet_ioctl+0x166/0x1580 net/ipv4/devinet.c:1020 inet_ioctl+0xf6/0x190 net/ipv4/af_inet.c:900 packet_ioctl+0xab/0x280 net/packet/af_packet.c:4175 sock_do_ioctl+0x5f/0xa0 net/socket.c:974 sock_ioctl+0x28d/0x450 net/socket.c:1071 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45cba9 RSP: 002b:00007f7d18fb3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004f54c0 RCX: 000000000045cba9 RDX: 0000000020000080 RSI: 0000000000008914 RDI: 0000000000000004 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000006df R14: 00000000004c9d8d R15: 00007f7d18fb46d4 INFO: task syz-executor.0:9681 blocked for more than 140 seconds. Not tainted 4.14.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29408 9681 6343 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x8a6/0x1d70 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 exp_funnel_lock kernel/rcu/tree_exp.h:295 [inline] _synchronize_rcu_expedited+0x669/0x820 kernel/rcu/tree_exp.h:596 synchronize_net+0x2b/0x40 net/core/dev.c:8236 dev_deactivate_many+0x3cf/0x980 net/sched/sch_generic.c:935 __dev_close_many+0x102/0x250 net/core/dev.c:1441 __dev_close net/core/dev.c:1466 [inline] __dev_change_flags+0x205/0x510 net/core/dev.c:6795 dev_change_flags+0x7e/0x130 net/core/dev.c:6863 devinet_ioctl+0xee6/0x1580 net/ipv4/devinet.c:1089 inet_ioctl+0xf6/0x190 net/ipv4/af_inet.c:900 packet_ioctl+0xab/0x280 net/packet/af_packet.c:4175 sock_do_ioctl+0x5f/0xa0 net/socket.c:974 sock_ioctl+0x28d/0x450 net/socket.c:1071 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45cba9 RSP: 002b:00007f7d18f92c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004f54c0 RCX: 000000000045cba9 RDX: 0000000020000100 RSI: 0000000000008914 RDI: 0000000000000004 RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000006df R14: 00000000004c9d8d R15: 00007f7d18f936d4 INFO: task syz-executor.1:9677 blocked for more than 140 seconds. Not tainted 4.14.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28032 9677 6347 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x8a6/0x1d70 kernel/sched/core.c:3384 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+0x5f0/0x1430 kernel/locking/mutex.c:893 ip6_mroute_setsockopt+0x95b/0x2780 net/ipv6/ip6mr.c:1706 do_ipv6_setsockopt.isra.0+0x325/0x3710 net/ipv6/ipv6_sockglue.c:163 ipv6_setsockopt+0xcc/0x130 net/ipv6/ipv6_sockglue.c:930 rawv6_setsockopt+0x46/0x100 net/ipv6/raw.c:1083 SYSC_setsockopt net/socket.c:1865 [inline] SyS_setsockopt+0x110/0x1e0 net/socket.c:1844 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45cba9 RSP: 002b:00007f08ad736c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000505cc0 RCX: 000000000045cba9 RDX: 00000000000000ca RSI: 0000000000000029 RDI: 0000000000000006 RBP: 000000000078bf00 R08: 000000000000000c R09: 0000000000000000 R10: 0000000020000180 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000aff R14: 00000000004cdcb6 R15: 00007f08ad7376d4 INFO: task syz-executor.2:9695 blocked for more than 140 seconds. Not tainted 4.14.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D30096 9695 6344 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x8a6/0x1d70 kernel/sched/core.c:3384 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+0x5f0/0x1430 kernel/locking/mutex.c:893 dev_ioctl+0x27c/0xcb0 net/core/dev_ioctl.c:421 sock_do_ioctl+0x8c/0xa0 net/socket.c:981 sock_ioctl+0x28d/0x450 net/socket.c:1071 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45cba9 RSP: 002b:00007f5fc331cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004ea600 RCX: 000000000045cba9 RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000003 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000424 R14: 00000000004c7009 R15: 00007f5fc331d6d4 INFO: task syz-executor.2:9701 blocked for more than 140 seconds. Not tainted 4.14.184-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D30144 9701 6344 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x8a6/0x1d70 kernel/sched/core.c:3384 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+0x5f0/0x1430 kernel/locking/mutex.c:893 devinet_ioctl+0x166/0x1580 net/ipv4/devinet.c:1020 inet_ioctl+0xf6/0x190 net/ipv4/af_inet.c:900 packet_ioctl+0xab/0x280 net/packet/af_packet.c:4175 sock_do_ioctl+0x5f/0xa0 net/socket.c:974 sock_ioctl+0x28d/0x450 net/socket.c:1071 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45cba9 RSP: 002b:00007f5fc32fbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004f54c0 RCX: 000000000045cba9 RDX: 0000000020000100 RSI: 0000000000008914 RDI: 0000000000000004 RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000006df R14: 00000000004c9d8d R15: 00007f5fc32fc6d4 Showing all locks held in the system: 3 locks held by kworker/0:0/3: #0: ("%s"("ipv6_addrconf")){+.+.}, at: [] process_one_work+0x6d8/0x14c0 kernel/workqueue.c:2087 #1: ((addr_chk_work).work){+.+.}, at: [] process_one_work+0x70e/0x14c0 kernel/workqueue.c:2091 #2: (rtnl_mutex){+.+.}, at: [] addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4412 1 lock held by khungtaskd/1057: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 4 locks held by kworker/u4:4/2334: #0: ("%s""netns"){+.+.}, at: [] process_one_work+0x6d8/0x14c0 kernel/workqueue.c:2087 #1: (net_cleanup_work){+.+.}, at: [] process_one_work+0x70e/0x14c0 kernel/workqueue.c:2091 #2: (net_mutex){+.+.}, at: [] cleanup_net+0x123/0x820 net/core/net_namespace.c:450 #3: (rtnl_mutex){+.+.}, at: [] ip6gre_exit_net+0x70/0x580 net/ipv6/ip6_gre.c:1206 3 locks held by kworker/1:2/3333: #0: ("events_power_efficient"){+.+.}, at: [] process_one_work+0x6d8/0x14c0 kernel/workqueue.c:2087 #1: ((reg_check_chans).work){+.+.}, at: [] process_one_work+0x70e/0x14c0 kernel/workqueue.c:2091 #2: (rtnl_mutex){+.+.}, at: [] reg_check_chans_work+0x65/0xcc0 net/wireless/reg.c:1655 1 lock held by systemd-journal/3627: #0: (&rq->lock){-.-.}, at: [] idle_balance kernel/sched/fair.c:8462 [inline] #0: (&rq->lock){-.-.}, at: [] pick_next_task_fair+0xab4/0x1340 kernel/sched/fair.c:6378 3 locks held by kworker/1:3/7292: #0: ("events"){+.+.}, at: [] process_one_work+0x6d8/0x14c0 kernel/workqueue.c:2087 #1: (deferred_process_work){+.+.}, at: [] process_one_work+0x70e/0x14c0 kernel/workqueue.c:2091 #2: (rtnl_mutex){+.+.}, at: [] switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 1 lock held by syz-executor.3/9676: #0: (rtnl_mutex){+.+.}, at: [] devinet_ioctl+0x166/0x1580 net/ipv4/devinet.c:1020 1 lock held by syz-executor.3/9686: #0: (rtnl_mutex){+.+.}, at: [] devinet_ioctl+0x166/0x1580 net/ipv4/devinet.c:1020 1 lock held by syz-executor.0/9672: #0: (rtnl_mutex){+.+.}, at: [] devinet_ioctl+0x166/0x1580 net/ipv4/devinet.c:1020 1 lock held by syz-executor.0/9681: #0: (rtnl_mutex){+.+.}, at: [] devinet_ioctl+0x166/0x1580 net/ipv4/devinet.c:1020 1 lock held by syz-executor.1/9677: #0: (rtnl_mutex){+.+.}, at: [] ip6_mroute_setsockopt+0x95b/0x2780 net/ipv6/ip6mr.c:1706 1 lock held by syz-executor.2/9695: #0: (rtnl_mutex){+.+.}, at: [] dev_ioctl+0x27c/0xcb0 net/core/dev_ioctl.c:421 1 lock held by syz-executor.2/9701: #0: (rtnl_mutex){+.+.}, at: [] devinet_ioctl+0x166/0x1580 net/ipv4/devinet.c:1020 1 lock held by syz-executor.2/9705: #0: (rtnl_mutex){+.+.}, at: [] devinet_ioctl+0x166/0x1580 net/ipv4/devinet.c:1020 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 4.14.184-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+0x1b2/0x283 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x17f 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: 3627 Comm: systemd-journal Not tainted 4.14.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880944fc400 task.stack: ffff888094500000 RIP: 0010:in_task_stack+0x19/0x40 arch/x86/kernel/dumpstack.c:45 RSP: 0018:ffff888094507a78 EFLAGS: 00000212 RAX: ffff888094500000 RBX: ffff888094507b40 RCX: ffff888094508000 RDX: ffff888094507b40 RSI: ffff8880944fc400 RDI: ffff888094507aa8 RBP: ffff888094507aa8 R08: 0000000000000001 R09: ffff888094507b68 R10: ffffed10128a0f72 R11: ffff888094507b97 R12: ffff8880944fc400 R13: ffff888094507b60 R14: dffffc0000000000 R15: ffff888094507b40 FS: 00007f1c3f4538c0(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1c3c866000 CR3: 0000000094b5f000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: get_stack_info+0x32/0x140 arch/x86/kernel/dumpstack_64.c:115 __unwind_start arch/x86/kernel/unwind_orc.c:555 [inline] __unwind_start+0x4bf/0x8c0 arch/x86/kernel/unwind_orc.c:512 unwind_start arch/x86/include/asm/unwind.h:60 [inline] __save_stack_trace+0x4a/0xd0 arch/x86/kernel/stacktrace.c:43 save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc.part.0+0x4f/0xd0 mm/kasan/kasan.c:551 kmem_cache_alloc+0x124/0x3c0 mm/slab.c:3552 getname_flags+0xc8/0x550 fs/namei.c:138 getname fs/namei.c:209 [inline] user_path_create fs/namei.c:3732 [inline] SYSC_mkdirat fs/namei.c:3864 [inline] SyS_mkdirat+0x83/0x220 fs/namei.c:3856 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f1c3e70f687 RSP: 002b:00007ffd3fda4468 EFLAGS: 00000293 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffd3fda7380 RCX: 00007f1c3e70f687 RDX: 00007f1c3f180a00 RSI: 00000000000001ed RDI: 000055eca07778c0 RBP: 00007ffd3fda44a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffd3fda7380 R15: 00007ffd3fda4990 Code: eb ae 0f 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 48 8b 46 18 48 8d 88 00 80 00 00 48 39 f8 77 21 48 39 f9 76 1c 48 89 42 08 01 00 00 00 c7 02 01 00 00 00 48 89 4a 10 48 c7 42 18 00 00