[ 2.168892] netdevsim netdevsim2025 nsim2025: renamed from eth0 [ 2.190899] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 2.190978] #PF: supervisor write access in kernel mode [ 2.191031] #PF: error_code(0x0002) - not-present page [ 2.191077] PGD 33c1067 P4D 33c1067 PUD 2f27067 PMD 0 [ 2.191125] Oops: Oops: 0002 [#1] SMP [ 2.191167] CPU: 3 UID: 0 PID: 273 Comm: ip Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 2.191240] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.191307] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 2.191361] Code: 83 e6 01 41 57 41 56 4c 8d 77 20 41 55 41 54 41 89 f4 55 48 89 d5 53 48 89 fb 9c 58 fa 48 89 45 00 45 85 e4 0f 85 8a 00 00 00 48 0f ba 2b 00 41 0f 92 c5 72 0e 5b 44 89 e8 5d 41 5c 41 5d 41 [ 2.191515] RSP: 0018:ffff9a88805a7628 EFLAGS: 00010046 [ 2.191565] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 000000008010000e [ 2.191622] RDX: ffff9a88805a7660 RSI: 0000000000000000 RDI: 0000000000000000 [ 2.191701] RBP: ffff9a88805a7660 R08: 0000000000000001 R09: ffffffff8e356300 [ 2.191757] R10: ffff8d4dc3bce000 R11: 0000000000000001 R12: 0000000000000000 [ 2.191828] R13: ffff9a88805a7790 R14: 0000000000000020 R15: ffff9a88805a7b30 [ 2.191892] FS: 00007f9849088800(0000) GS:ffff8d4e6f511000(0000) knlGS:0000000000000000 [ 2.191956] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.192003] CR2: 0000000000000000 CR3: 000000000394a004 CR4: 0000000000772ef0 [ 2.192068] PKRU: 55555554 [ 2.192092] Call Trace: [ 2.192114] [ 2.192143] __cancel_work+0x29/0xe0 [ 2.192179] __cancel_work_sync+0x16/0x80 [ 2.192215] __dev_close_many+0x113/0x2b0 [ 2.192265] netif_close_many+0x98/0x160 [ 2.192300] __dev_change_net_namespace+0x96b/0xae0 [ 2.192345] do_setlink.constprop.0+0xb5/0x1170 [ 2.192418] ? __nla_validate_parse+0x5d/0xe70 [ 2.192466] ? __kmalloc_cache_noprof+0x3a5/0x4b0 [ 2.192517] rtnl_newlink+0x7fa/0xc00 [ 2.192559] ? __schedule+0x504/0xb40 [ 2.192599] ? netdev_run_todo+0x63/0x550 [ 2.192626] ? rtnl_setlink+0x2c0/0x2c0 [ 2.192661] rtnetlink_rcv_msg+0x358/0x400 [ 2.192700] ? get_page_from_freelist+0x15b4/0x1770 [ 2.192739] ? rtnl_calcit.isra.0+0x110/0x110 [ 2.192796] netlink_rcv_skb+0x57/0x100 [ 2.192834] netlink_unicast+0x252/0x380 [ 2.192868] ? __alloc_skb+0xfc/0x1e0 [ 2.192903] netlink_sendmsg+0x1be/0x3e0 [ 2.192933] ____sys_sendmsg+0x132/0x260 [ 2.192968] ? copy_msghdr_from_user+0x6c/0xa0 [ 2.193006] ___sys_sendmsg+0x87/0xd0 [ 2.193040] ? do_wp_page+0x369/0xe90 [ 2.193081] ? sysvec_apic_timer_interrupt+0xf/0x90 [ 2.193120] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 2.193176] ? fsnotify_grab_connector+0x48/0x80 [ 2.193224] ? fsnotify_destroy_marks+0x29/0x150 [ 2.193276] __sys_sendmsg+0x71/0xd0 [ 2.193304] do_syscall_64+0xa4/0xfd0 [ 2.193341] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 2.193391] RIP: 0033:0x7f98492561d7 [ 2.193429] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 2.193576] RSP: 002b:00007ffe37778e48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 2.193642] RAX: ffffffffffffffda RBX: 00007ffe37779580 RCX: 00007f98492561d7 [ 2.193705] RDX: 0000000000000000 RSI: 00007ffe37778eb0 RDI: 0000000000000005 [ 2.193761] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078 [ 2.193833] R10: 00007f9849152510 R11: 0000000000000246 R12: 0000000000000004 [ 2.193898] R13: 00000000691cd7ca R14: 0000000000499600 R15: 0000000000000000 [ 2.193961] [ 2.193983] Modules linked in: netdevsim psample [ 2.194029] CR2: 0000000000000000 [ 2.194063] ---[ end trace 0000000000000000 ]--- [ 2.194102] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 2.194152] Code: 83 e6 01 41 57 41 56 4c 8d 77 20 41 55 41 54 41 89 f4 55 48 89 d5 53 48 89 fb 9c 58 fa 48 89 45 00 45 85 e4 0f 85 8a 00 00 00 48 0f ba 2b 00 41 0f 92 c5 72 0e 5b 44 89 e8 5d 41 5c 41 5d 41 [ 2.194291] RSP: 0018:ffff9a88805a7628 EFLAGS: 00010046 [ 2.194335] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 000000008010000e [ 2.194406] RDX: ffff9a88805a7660 RSI: 0000000000000000 RDI: 0000000000000000 [ 2.194476] RBP: ffff9a88805a7660 R08: 0000000000000001 R09: ffffffff8e356300 [ 2.194560] R10: ffff8d4dc3bce000 R11: 0000000000000001 R12: 0000000000000000 [ 2.194624] R13: ffff9a88805a7790 R14: 0000000000000020 R15: ffff9a88805a7b30 [ 2.194691] FS: 00007f9849088800(0000) GS:ffff8d4e6f511000(0000) knlGS:0000000000000000 [ 2.194756] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.194819] CR2: 0000000000000000 CR3: 000000000394a004 CR4: 0000000000772ef0 [ 2.194882] PKRU: 55555554 [ 2.194913] note: ip[273] exited with irqs disabled [ 2.195215] ip (273) used greatest stack depth: 11448 bytes left WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr