[ 15.721384][ T248] ip (248) used greatest stack depth: 24104 bytes left [ 26.489602][ T12] ================================================================== [ 26.490062][ T12] BUG: KASAN: null-ptr-deref in try_to_grab_pending+0x81/0x6c0 [ 26.490483][ T12] Write of size 8 at addr 0000000000000000 by task kworker/u16:0/12 [ 26.490888][ T12] [ 26.491031][ T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(full) [ 26.491039][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 26.491043][ T12] Workqueue: netns cleanup_net [ 26.491052][ T12] Call Trace: [ 26.491054][ T12] [ 26.491058][ T12] dump_stack_lvl+0x82/0xc0 [ 26.491066][ T12] ? try_to_grab_pending+0x81/0x6c0 [ 26.491071][ T12] kasan_report+0xca/0x100 [ 26.491080][ T12] ? try_to_grab_pending+0x81/0x6c0 [ 26.491090][ T12] kasan_check_range+0x39/0x1b0 [ 26.491097][ T12] try_to_grab_pending+0x81/0x6c0 [ 26.491104][ T12] __cancel_work+0x7c/0x260 [ 26.491110][ T12] ? enable_delayed_work+0x10/0x10 [ 26.491118][ T12] ? qdisc_destroy+0x50/0x50 [ 26.491128][ T12] __cancel_work_sync+0x18/0xc0 [ 26.491134][ T12] __dev_close_many+0x1ce/0x810 [ 26.491142][ T12] ? netdev_notify_peers+0x20/0x20 [ 26.491150][ T12] ? netif_close_many+0x201/0x650 [ 26.491157][ T12] netif_close_many+0x201/0x650 [ 26.491162][ T12] ? __mutex_handoff+0x2b0/0x2b0 [ 26.491169][ T12] ? __dev_close_many+0x810/0x810 [ 26.491175][ T12] ? netif_close_many_and_unlock+0x21/0x2a0 [ 26.491184][ T12] unregister_netdevice_many_notify+0x305/0x1b30 [ 26.491189][ T12] ? find_held_lock+0x2b/0x80 [ 26.491195][ T12] ? rtnl_is_locked+0x15/0x20 [ 26.491202][ T12] ? dev_ingress_queue_create+0x190/0x190 [ 26.491206][ T12] ? rtnl_is_locked+0x15/0x20 [ 26.491210][ T12] ? unregister_netdevice_queue+0x6f/0x410 [ 26.491214][ T12] ? lockdep_hardirqs_on+0x7c/0x110 [ 26.491220][ T12] ? unregister_netdevice_many+0x20/0x20 [ 26.491231][ T12] default_device_exit_batch+0x235/0x2d0 [ 26.491235][ T12] ? unregister_netdev+0x60/0x60 [ 26.491245][ T12] ops_undo_list+0x2bf/0x890 [ 26.491252][ T12] ? netns_get+0x110/0x110 [ 26.491255][ T12] ? cleanup_net+0x2d6/0x830 [ 26.491263][ T12] cleanup_net+0x3b2/0x830 [ 26.491268][ T12] ? net_passive_dec+0x190/0x190 [ 26.491276][ T12] ? rcu_is_watching+0x12/0xb0 [ 26.491286][ T12] process_one_work+0xe35/0x1650 [ 26.491297][ T12] ? pwq_dec_nr_in_flight+0x550/0x550 [ 26.491308][ T12] ? assign_work+0x168/0x240 [ 26.491316][ T12] worker_thread+0x591/0xcf0 [ 26.491325][ T12] ? rescuer_thread+0xd10/0xd10 [ 26.491331][ T12] kthread+0x37b/0x5f0 [ 26.491338][ T12] ? kthread_is_per_cpu+0xc0/0xc0 [ 26.491343][ T12] ? ret_from_fork+0x1b/0x270 [ 26.491350][ T12] ? __lock_release+0x5d/0x170 [ 26.491356][ T12] ? rcu_is_watching+0x12/0xb0 [ 26.491362][ T12] ? kthread_is_per_cpu+0xc0/0xc0 [ 26.491369][ T12] ret_from_fork+0x1db/0x270 [ 26.491374][ T12] ? kthread_is_per_cpu+0xc0/0xc0 [ 26.491378][ T12] ret_from_fork_asm+0x11/0x20 [ 26.491393][ T12] [ 26.491394][ T12] ================================================================== [ 26.505023][ T12] Disabling lock debugging due to kernel taint [ 26.505242][ T12] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 26.505481][ T12] #PF: supervisor write access in kernel mode [ 26.505691][ T12] #PF: error_code(0x0002) - not-present page [ 26.505895][ T12] PGD 0 P4D 0 [ 26.506023][ T12] Oops: Oops: 0002 [#1] SMP KASAN [ 26.506223][ T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc5-virtme #1 PREEMPT(full) [ 26.506608][ T12] Tainted: [B]=BAD_PAGE [ 26.506795][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 26.507152][ T12] Workqueue: netns cleanup_net [ 26.507403][ T12] RIP: 0010:try_to_grab_pending+0x81/0x6c0 [ 26.507615][ T12] Code: 00 41 89 c0 b8 01 00 00 00 45 85 c0 74 0f 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 be 08 00 00 00 48 89 df e8 6f 7d 81 00 48 0f ba 2b 00 72 11 48 83 c4 10 31 c0 5b 5d 41 5c 41 5d 41 5e [ 26.508248][ T12] RSP: 0018:ffffc900000c7690 EFLAGS: 00010046 [ 26.508455][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffb044190a [ 26.508710][ T12] RDX: fffffbfff691cecd RSI: 0000000000000008 RDI: ffffffffb48e7660 [ 26.508964][ T12] RBP: ffffc900000c76f8 R08: 0000000000000001 R09: fffffbfff691cecc [ 26.509242][ T12] R10: ffffffffb48e7667 R11: ffffc900000c7180 R12: 0000000000000000 [ 26.509491][ T12] R13: 0000000000000286 R14: ffff8880123bc000 R15: dffffc0000000000 [ 26.509745][ T12] FS: 0000000000000000(0000) GS:ffff888081984000(0000) knlGS:0000000000000000 [ 26.510026][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.510263][ T12] CR2: 0000000000000000 CR3: 000000000a359004 CR4: 0000000000772ef0 [ 26.510513][ T12] PKRU: 55555554 [ 26.510647][ T12] Call Trace: [ 26.510774][ T12] [ 26.510893][ T12] __cancel_work+0x7c/0x260 [ 26.511064][ T12] ? enable_delayed_work+0x10/0x10 [ 26.511246][ T12] ? qdisc_destroy+0x50/0x50 [ 26.511423][ T12] __cancel_work_sync+0x18/0xc0 [ 26.511587][ T12] __dev_close_many+0x1ce/0x810 [ 26.511845][ T12] ? netdev_notify_peers+0x20/0x20 [ 26.512061][ T12] ? netif_close_many+0x201/0x650 [ 26.512236][ T12] netif_close_many+0x201/0x650 [ 26.512414][ T12] ? __mutex_handoff+0x2b0/0x2b0 [ 26.512582][ T12] ? __dev_close_many+0x810/0x810 [ 26.512754][ T12] ? netif_close_many_and_unlock+0x21/0x2a0 [ 26.512954][ T12] unregister_netdevice_many_notify+0x305/0x1b30 [ 26.513155][ T12] ? find_held_lock+0x2b/0x80 [ 26.513322][ T12] ? rtnl_is_locked+0x15/0x20 [ 26.513480][ T12] ? dev_ingress_queue_create+0x190/0x190 [ 26.513649][ T12] ? rtnl_is_locked+0x15/0x20 [ 26.513828][ T12] ? unregister_netdevice_queue+0x6f/0x410 [ 26.514023][ T12] ? lockdep_hardirqs_on+0x7c/0x110 [ 26.514186][ T12] ? unregister_netdevice_many+0x20/0x20 [ 26.514345][ T12] default_device_exit_batch+0x235/0x2d0 [ 26.514509][ T12] ? unregister_netdev+0x60/0x60 [ 26.514681][ T12] ops_undo_list+0x2bf/0x890 [ 26.514844][ T12] ? netns_get+0x110/0x110 [ 26.515000][ T12] ? cleanup_net+0x2d6/0x830 [ 26.515179][ T12] cleanup_net+0x3b2/0x830 [ 26.515345][ T12] ? net_passive_dec+0x190/0x190 [ 26.515522][ T12] ? rcu_is_watching+0x12/0xb0 [ 26.515717][ T12] process_one_work+0xe35/0x1650 [ 26.516005][ T12] ? pwq_dec_nr_in_flight+0x550/0x550 [ 26.516293][ T12] ? assign_work+0x168/0x240 [ 26.516528][ T12] worker_thread+0x591/0xcf0 [ 26.516703][ T12] ? rescuer_thread+0xd10/0xd10 [ 26.516888][ T12] kthread+0x37b/0x5f0 [ 26.517016][ T12] ? kthread_is_per_cpu+0xc0/0xc0 [ 26.517184][ T12] ? ret_from_fork+0x1b/0x270 [ 26.517353][ T12] ? __lock_release+0x5d/0x170 [ 26.517627][ T12] ? rcu_is_watching+0x12/0xb0 [ 26.517796][ T12] ? kthread_is_per_cpu+0xc0/0xc0 [ 26.517955][ T12] ret_from_fork+0x1db/0x270 [ 26.518134][ T12] ? kthread_is_per_cpu+0xc0/0xc0 [ 26.518386][ T12] ret_from_fork_asm+0x11/0x20 [ 26.518550][ T12] [ 26.518693][ T12] Modules linked in: [ 26.518911][ T12] CR2: 0000000000000000 [ 26.519033][ T12] ---[ end trace 0000000000000000 ]--- [ 26.519298][ T12] RIP: 0010:try_to_grab_pending+0x81/0x6c0 [ 26.519522][ T12] Code: 00 41 89 c0 b8 01 00 00 00 45 85 c0 74 0f 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 be 08 00 00 00 48 89 df e8 6f 7d 81 00 48 0f ba 2b 00 72 11 48 83 c4 10 31 c0 5b 5d 41 5c 41 5d 41 5e [ 26.520274][ T12] RSP: 0018:ffffc900000c7690 EFLAGS: 00010046 [ 26.520573][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffb044190a [ 26.520916][ T12] RDX: fffffbfff691cecd RSI: 0000000000000008 RDI: ffffffffb48e7660 [ 26.521177][ T12] RBP: ffffc900000c76f8 R08: 0000000000000001 R09: fffffbfff691cecc [ 26.521414][ T12] R10: ffffffffb48e7667 R11: ffffc900000c7180 R12: 0000000000000000 [ 26.521760][ T12] R13: 0000000000000286 R14: ffff8880123bc000 R15: dffffc0000000000 [ 26.522017][ T12] FS: 0000000000000000(0000) GS:ffff888081984000(0000) knlGS:0000000000000000 [ 26.522314][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.522514][ T12] CR2: 0000000000000000 CR3: 000000000a359004 CR4: 0000000000772ef0 [ 26.522766][ T12] PKRU: 55555554 [ 26.522898][ T12] Kernel panic - not syncing: Fatal exception [ 26.523290][ T12] Kernel Offset: 0x2ee00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 26.523679][ T12] ---[ end Kernel panic - not syncing: Fatal exception ]--- WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr