INFO: task udevd:5406 blocked for more than 143 seconds. Not tainted 6.10.0-syzkaller-12381-gc33ffdb70cc6 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:S stack:23696 pid:5406 tgid:5406 ppid:4679 flags:0x00000002 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_hrtimeout_range_clock+0x36e/0x480 kernel/time/hrtimer.c:2275 ep_poll fs/eventpoll.c:2062 [inline] do_epoll_wait+0x1d79/0x2040 fs/eventpoll.c:2464 __do_sys_epoll_wait fs/eventpoll.c:2476 [inline] __se_sys_epoll_wait fs/eventpoll.c:2471 [inline] __x64_sys_epoll_wait+0x257/0x2a0 fs/eventpoll.c:2471 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7faba0923457 RSP: 002b:00007ffffbbc1408 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007faba0923457 RDX: 0000000000000004 RSI: 00007ffffbbc1448 RDI: 0000000000000004 RBP: 00005645ec7ace10 R08: 0000000000000007 R09: a0ddb40164b65a28 R10: 00000000ffffffff R11: 0000000000000246 R12: 00005645ec7b19b0 R13: 00007ffffbbc1448 R14: 00000000ffffffff R15: 00005645ec78b910 Showing all locks held in the system: 3 locks held by kworker/u8:1/12: #0: ffff888029f63948 ( (wq_completion)ipv6_addrconf ){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3206 [inline] , at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90000117d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] ffffc90000117d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4734 1 lock held by khungtaskd/30: #0: ffffffff8e737660 ( rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline] rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline] rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6620 4 locks held by kworker/u8:3/52: #0: ffff8880162e5948 ((wq_completion)netns){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3206 [inline] , at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90000bc7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8fa72cd0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594 #3: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: mpls_net_exit+0x7d/0x2a0 net/mpls/af_mpls.c:2708 3 locks held by kworker/u8:4/63: 1 lock held by klogd/4668: #0: ffff8880b923ea18 ( &rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560 2 locks held by dhcpcd/4893: #0: ffff8880709b4678 (nlk_cb_mutex-ROUTE){+.+.}-{3:3}, at: netlink_dump+0xcb/0xd80 net/netlink/af_netlink.c:2271 #1: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #1: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_dumpit+0x99/0x200 net/core/rtnetlink.c:6506 2 locks held by getty/4976: #0: ffff88802f4210a0 ( &tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211 3 locks held by udevd/5227: #0: ffff8880795f3110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_close_device drivers/input/evdev.c:402 [inline] #0: ffff8880795f3110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_release+0x6d0/0x7d0 drivers/input/evdev.c:447 #1: ffff8880795f52c0 ( &dev->mutex #2){+.+.}-{3:3}, at: input_close_device+0x4e/0x1d0 drivers/input/input.c:667 #2: ffffffff8e73ca38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline] #2: ffffffff8e73ca38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:958 3 locks held by kworker/u9:9/5241: #0: ffff88806fedc948 ( (wq_completion)hci4 ){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3206 [inline] , at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90003b4fd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] ffffc90003b4fd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffff88805de80d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:327 2 locks held by kworker/1:4/5281: 9 locks held by kworker/1:7/5286: 3 locks held by kworker/0:8/15148: #0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90004237d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90004237d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276 2 locks held by syz-executor/18969: #0: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3507 #1: ffffffff8e5d1b10 (cpu_hotplug_lock){++++}-{0:0}, at: flush_all_backlogs net/core/dev.c:6021 [inline] (cpu_hotplug_lock){++++}-{0:0}, at: unregister_netdevice_many_notify+0x5c4/0x1c40 net/core/dev.c:11325 1 lock held by syz-executor/19096: #0: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644 1 lock held by syz-executor/19098: #0: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644 1 lock held by syz-executor/19101: #0: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644 1 lock held by syz-executor/19104: #0: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3} , at: rtnl_lock net/core/rtnetlink.c:79 [inline] , at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644 1 lock held by syz-executor/19128: #0: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] (rtnl_mutex){+.+.}-{3:3}, at: __rtnl_newlink net/core/rtnetlink.c:3720 [inline] (rtnl_mutex){+.+.}-{3:3}, at: rtnl_newlink+0xab7/0x20a0 net/core/rtnetlink.c:3743 2 locks held by syz-executor/19164: #0: ffffffff8fa72cd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 ( rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/19166: #0: ffffffff8fa72cd0 ( pernet_ops_rwsem ){++++}-{3:3} , at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/19169: #0: ffffffff8fa72cd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/19172: #0: ffffffff8fa72cd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/19175: #0: ffffffff8fa72cd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/19178: #0: ffffffff8fa72cd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/19183: #0: ffffffff8fa72cd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 ( rtnl_mutex ){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/19185: #0: ffffffff8fa72cd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/19190: #0: ffffffff8fa72cd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/19193: #0: ffffffff8fa72cd0 (pernet_ops_rwsem ){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/19196: #0: ffffffff8fa72cd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/19200: #0: ffffffff8fa72cd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/19202: #0: ffffffff8fa72cd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 ( rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 2 locks held by syz-executor/19206: #0: ffffffff8fa72cd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504 #1: ffffffff8fa7f848 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-syzkaller-12381-gc33ffdb70cc6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xfee/0x1030 kernel/hung_task.c:379 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 0 to CPUs 1: gspca_pac7302 1-1:0.0: URB error -71, resubmitting NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5284 Comm: kworker/1:6 Not tainted 6.10.0-syzkaller-12381-gc33ffdb70cc6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Workqueue: events nsim_dev_trap_report_work RIP: 0010:io_serial_in+0x76/0xb0 drivers/tty/serial/8250/8250_port.c:406 Code: 80 6c 55 fc 89 e9 41 d3 e6 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 c1 a4 bc fc 44 03 33 44 89 f2 ec <0f> b6 c0 5b 41 5e 41 5f 5d c3 cc cc cc cc 89 e9 80 e1 07 38 c1 7c RSP: 0018:ffffc90000a169b8 EFLAGS: 00000006 RAX: 1ffffffff2a08705 RBX: ffffffff95043f60 RCX: 0000000000000000 RDX: 00000000000003f9 RSI: 0000000000000000 RDI: 0000000000000020 RBP: 0000000000000000 R08: ffffffff853e16f6 R09: fffff52000142d18 R10: dffffc0000000000 R11: ffffffff853e16b0 R12: dffffc0000000000 R13: ffffffff8ef2fdc0 R14: 00000000000003f9 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555c3e8808 CR3: 000000004129a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: serial_port_in include/linux/serial_core.h:674 [inline] serial8250_console_write+0x2c2/0x1770 drivers/tty/serial/8250/8250_port.c:3357 console_emit_next_record kernel/printk/printk.c:2983 [inline] console_flush_all+0x865/0xfd0 kernel/printk/printk.c:3049 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3118 vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2348 _printk+0xd5/0x120 kernel/printk/printk.c:2373 int_irq+0x1bd/0x250 drivers/media/usb/gspca/gspca.c:104 __usb_hcd_giveback_urb+0x42c/0x6e0 drivers/usb/core/hcd.c:1650 dummy_timer+0x830/0x45a0 drivers/usb/gadget/udc/dummy_hcd.c:1987 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline] RIP: 0010:write_comp_data kernel/kcov.c:236 [inline] RIP: 0010:__sanitizer_cov_trace_switch+0xab/0x120 kernel/kcov.c:341 Code: 24 20 65 4c 8b 1c 25 40 d7 03 00 31 d2 eb 08 48 ff c2 49 39 d2 74 71 4c 8b 74 d6 10 65 8b 05 a4 4d 70 7e a9 00 01 ff 00 74 11 00 01 00 00 74 de 41 83 bb 1c 16 00 00 00 74 d4 41 8b 83 f8 15 RSP: 0018:ffffc90000a17858 EFLAGS: 00000206 RAX: 0000000000000303 RBX: 0000000000000000 RCX: ffff8880644b3c00 RDX: 0000000000000004 RSI: ffffffff8fd011e0 RDI: 0000000000000001 RBP: ffffc90000a17c90 R08: 0000000000000001 R09: ffffffff8b3361c5 R10: 000000000000002b R11: ffff8880644b3c00 R12: ffff8880333d26a5 R13: ffff8880333d26a5 R14: 0000000000000007 R15: dffffc0000000000 _ieee802_11_parse_elems_full+0xc05/0x4a40 net/mac80211/parse.c:351 ieee802_11_parse_elems_full+0xdff/0x2880 net/mac80211/parse.c:984 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2361 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2368 [inline] ieee80211_inform_bss+0x15f/0x1080 net/mac80211/scan.c:79 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline] cfg80211_inform_single_bss_data+0xe93/0x2030 net/wireless/scan.c:2335 cfg80211_inform_bss_data+0x3dd/0x5a70 net/wireless/scan.c:3159 cfg80211_inform_bss_frame_data+0x3bc/0x720 net/wireless/scan.c:3249 ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226 ieee80211_scan_rx+0x526/0x9c0 net/mac80211/scan.c:340 __ieee80211_rx_handle_packet net/mac80211/rx.c:5225 [inline] ieee80211_rx_list+0x2b02/0x3780 net/mac80211/rx.c:5462 ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5485 ieee80211_rx include/net/mac80211.h:5124 [inline] ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:439 tasklet_action_common+0x321/0x4d0 kernel/softirq.c:785 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x18/0x70 kernel/kcov.c:207 Code: 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 40 d7 03 00 65 8b 15 b0 53 70 7e c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 1c 16 00 00 RSP: 0018:ffffc90003f675a0 EFLAGS: 00000296 RAX: ffffffff81410dcc RBX: 0000000000000002 RCX: ffff8880644b3c00 RDX: 0000000000000002 RSI: ffffffff81fa8446 RDI: ffffffff81fa8450 RBP: 1ffff920007eced0 R08: ffffffff81410c60 R09: ffffc90003f67770 R10: 0000000000000003 R11: ffffffff817f2a60 R12: ffffffff901026b0 R13: dffffc0000000000 R14: 1ffff920007eced0 R15: ffffffff9088e8b8 unwind_next_frame+0x67c/0x2a00 arch/x86/kernel/unwind_orc.c:495 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2252 [inline] slab_free mm/slub.c:4473 [inline] kmem_cache_free+0x145/0x350 mm/slub.c:4548 nsim_dev_trap_report drivers/net/netdevsim/dev.c:821 [inline] nsim_dev_trap_report_work+0x765/0xaa0 drivers/net/netdevsim/dev.c:850 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting gspca_pac7302 1-1:0.0: URB error -71, resubmitting