[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.68' (ECDSA) to the list of known hosts. syzkaller login: [ 48.025644] IPVS: ftp: loaded support on port[0] = 21 [ 48.129757] chnl_net:caif_netlink_parms(): no params data found [ 48.221946] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.228604] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.236420] device bridge_slave_0 entered promiscuous mode [ 48.244117] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.250491] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.258292] device bridge_slave_1 entered promiscuous mode [ 48.275952] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 48.285062] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 48.303135] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 48.311105] team0: Port device team_slave_0 added [ 48.317266] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 48.325309] team0: Port device team_slave_1 added [ 48.340428] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 48.347205] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 48.372551] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 48.384509] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 48.390743] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 48.415985] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 48.426561] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 48.434182] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 48.453010] device hsr_slave_0 entered promiscuous mode [ 48.458760] device hsr_slave_1 entered promiscuous mode [ 48.465193] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 48.472117] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 48.534849] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.541244] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.548207] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.554617] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.585815] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 48.591882] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.600790] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 48.609552] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.618680] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.625903] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.632761] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 48.642874] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 48.649184] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.658125] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 48.665826] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.672168] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.681834] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 48.689960] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.696346] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.714533] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 48.722436] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 48.730548] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 48.738573] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 48.748271] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 48.757295] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 48.764395] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 48.776999] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 48.785820] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 48.792442] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 48.803905] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 48.816320] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 48.825884] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 48.858731] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 48.866302] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 48.872687] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 48.882327] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 48.890696] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 48.897825] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 48.907214] device veth0_vlan entered promiscuous mode [ 48.916465] device veth1_vlan entered promiscuous mode [ 48.922294] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 48.931073] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 48.942245] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 48.951714] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 48.959032] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 48.966696] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 48.975948] device veth0_macvtap entered promiscuous mode [ 48.982015] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 48.990327] device veth1_macvtap entered promiscuous mode [ 48.998882] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 49.008065] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 49.017689] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 49.024743] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 49.032932] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 49.044346] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 49.050976] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program [ 49.170018] FAULT_INJECTION: forcing a failure. [ 49.170018] name failslab, interval 1, probability 0, space 0, times 1 [ 49.181582] CPU: 0 PID: 8331 Comm: syz-executor168 Not tainted 4.19.211-syzkaller #0 [ 49.189447] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 49.198800] Call Trace: [ 49.201375] dump_stack+0x1fc/0x2ef [ 49.204985] should_fail.cold+0xa/0xf [ 49.208766] ? setup_fault_attr+0x200/0x200 [ 49.213077] ? lock_acquire+0x170/0x3c0 [ 49.217041] __should_failslab+0x115/0x180 [ 49.221257] should_failslab+0x5/0x10 [ 49.225037] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 49.230121] __kmalloc_node_track_caller+0x38/0x70 [ 49.235062] __alloc_skb+0xae/0x560 [ 49.238673] alloc_uevent_skb+0x7b/0x210 [ 49.242726] kobject_uevent_env+0xa90/0x1480 [ 49.247133] device_add+0xb2f/0x16d0 [ 49.250831] ? device_check_offline+0x280/0x280 [ 49.255478] ? kfree_const+0x51/0x60 [ 49.259183] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.264187] ? kfree+0x1e2/0x210 [ 49.267535] device_create_groups_vargs+0x1f4/0x270 [ 49.272534] device_create+0xdf/0x120 [ 49.276329] ? device_create_vargs+0x50/0x50 [ 49.280719] ? pointer+0x850/0x850 [ 49.284247] bdi_register_va.part.0+0x4c/0x750 [ 49.288819] bdi_register+0x12a/0x140 [ 49.292598] ? bdi_register_va+0x80/0x80 [ 49.296639] ? vsnprintf+0x2cc/0x14f0 [ 49.300420] bdi_register_owner+0x59/0x100 [ 49.304638] __device_add_disk+0xd58/0x10c0 [ 49.308958] ? sprintf+0xc0/0x100 [ 49.312392] ? blk_alloc_devt+0x2d0/0x2d0 [ 49.316532] ? __raw_spin_lock_init+0x28/0x100 [ 49.321095] ? __lockdep_init_map+0x100/0x5a0 [ 49.325569] loop_add+0x628/0x8a0 [ 49.329002] loop_control_ioctl+0x16c/0x480 [ 49.333312] ? loop_lookup+0x1d0/0x1d0 [ 49.337188] ? __vfs_write+0xff/0x770 [ 49.340968] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 49.345874] ? common_file_perm+0x4e5/0x850 [ 49.350178] ? loop_lookup+0x1d0/0x1d0 [ 49.354066] do_vfs_ioctl+0xcdb/0x12e0 [ 49.357933] ? vfs_write+0x3d7/0x540 [ 49.361626] ? ioctl_preallocate+0x200/0x200 [ 49.366025] ? lock_downgrade+0x720/0x720 [ 49.370157] ? check_preemption_disabled+0x41/0x280 [ 49.375169] ? vfs_write+0x393/0x540 [ 49.378868] ? ksys_write+0x1c8/0x2a0 [ 49.382666] ksys_ioctl+0x9b/0xc0 [ 49.386101] __x64_sys_ioctl+0x6f/0xb0 [ 49.389977] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 49.394544] do_syscall_64+0xf9/0x620 [ 49.398330] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.403496] RIP: 0033:0x7f651f6d30a9 [ 49.407187] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 49.426070] RSP: 002b:00007ffd9dff7cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 49.433756] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f651f6d30a9 [ 49.441003] RDX: 000000000000000c RSI: 0000000000004c80 RDI: 0000000000000003 [ 49.448252] RBP: 00007ffd9dff7d00 R08: 0000000000000002 R09: 0000000000003837 [ 49.455499] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 49.462745] R13: 000000000000bffa R14: 00007ffd9dff7d70 R15: 00007ffd9dff7d54 executing program [ 49.506767] FAULT_INJECTION: forcing a failure. [ 49.506767] name failslab, interval 1, probability 0, space 0, times 0 [ 49.519356] CPU: 1 PID: 8338 Comm: syz-executor168 Not tainted 4.19.211-syzkaller #0 [ 49.527229] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 49.536566] Call Trace: [ 49.539134] dump_stack+0x1fc/0x2ef [ 49.542743] should_fail.cold+0xa/0xf [ 49.546524] ? setup_fault_attr+0x200/0x200 [ 49.550821] ? lock_acquire+0x170/0x3c0 [ 49.554774] __should_failslab+0x115/0x180 [ 49.558987] should_failslab+0x5/0x10 [ 49.562771] kmem_cache_alloc_node+0x245/0x3b0 [ 49.567334] __alloc_skb+0x71/0x560 [ 49.570941] alloc_uevent_skb+0x7b/0x210 [ 49.574982] kobject_uevent_env+0xa90/0x1480 [ 49.579372] device_add+0xb2f/0x16d0 [ 49.583074] ? device_check_offline+0x280/0x280 [ 49.587719] ? kfree_const+0x51/0x60 [ 49.591412] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.596405] ? kfree+0x1e2/0x210 [ 49.599761] device_create_groups_vargs+0x1f4/0x270 [ 49.604758] device_create+0xdf/0x120 [ 49.608536] ? device_create_vargs+0x50/0x50 [ 49.612937] ? pointer+0x850/0x850 [ 49.616508] bdi_register_va.part.0+0x4c/0x750 [ 49.621077] bdi_register+0x12a/0x140 [ 49.624856] ? bdi_register_va+0x80/0x80 [ 49.628900] ? vsnprintf+0x2cc/0x14f0 [ 49.632708] bdi_register_owner+0x59/0x100 [ 49.637009] __device_add_disk+0xd58/0x10c0 [ 49.641309] ? sprintf+0xc0/0x100 [ 49.644743] ? blk_alloc_devt+0x2d0/0x2d0 [ 49.648872] ? __raw_spin_lock_init+0x28/0x100 [ 49.653439] ? __lockdep_init_map+0x100/0x5a0 [ 49.657917] loop_add+0x628/0x8a0 [ 49.661348] loop_control_ioctl+0x16c/0x480 [ 49.665674] ? loop_lookup+0x1d0/0x1d0 [ 49.669559] ? __vfs_write+0xff/0x770 [ 49.673350] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 49.678257] ? common_file_perm+0x4e5/0x850 [ 49.682555] ? loop_lookup+0x1d0/0x1d0 [ 49.686423] do_vfs_ioctl+0xcdb/0x12e0 [ 49.690285] ? vfs_write+0x3d7/0x540 [ 49.693977] ? ioctl_preallocate+0x200/0x200 [ 49.698382] ? lock_downgrade+0x720/0x720 [ 49.702521] ? check_preemption_disabled+0x41/0x280 [ 49.707525] ? vfs_write+0x393/0x540 [ 49.711317] ? ksys_write+0x1c8/0x2a0 [ 49.715103] ksys_ioctl+0x9b/0xc0 [ 49.718539] __x64_sys_ioctl+0x6f/0xb0 [ 49.722413] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 49.726975] do_syscall_64+0xf9/0x620 [ 49.730760] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.735928] RIP: 0033:0x7f651f6d30a9 [ 49.739638] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 49.758538] RSP: 002b:00007ffd9dff7cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 49.766240] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f651f6d30a9 [ 49.773494] RDX: 000000000000000c RSI: 0000000000004c80 RDI: 0000000000000003 [ 49.780748] RBP: 00007ffd9dff7d00 R08: 0000000000000002 R09: 0000000000003837 [ 49.788002] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 49.795338] R13: 000000000000c018 R14: 00007ffd9dff7d70 R15: 00007ffd9dff7d54 executing program [ 49.848267] FAULT_INJECTION: forcing a failure. [ 49.848267] name failslab, interval 1, probability 0, space 0, times 0 [ 49.859513] CPU: 0 PID: 8345 Comm: syz-executor168 Not tainted 4.19.211-syzkaller #0 [ 49.867384] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 49.876714] Call Trace: [ 49.879287] dump_stack+0x1fc/0x2ef [ 49.882902] should_fail.cold+0xa/0xf [ 49.886686] ? setup_fault_attr+0x200/0x200 [ 49.890987] ? lock_acquire+0x170/0x3c0 [ 49.894958] __should_failslab+0x115/0x180 [ 49.899181] should_failslab+0x5/0x10 [ 49.902962] kmem_cache_alloc+0x277/0x370 [ 49.907092] skb_clone+0x151/0x3d0 [ 49.910612] netlink_broadcast_filtered+0x8e5/0xbc0 [ 49.915611] netlink_broadcast+0x35/0x40 [ 49.919653] kobject_uevent_env+0xa56/0x1480 [ 49.924046] device_add+0xb2f/0x16d0 [ 49.927744] ? device_check_offline+0x280/0x280 [ 49.932392] ? kfree_const+0x51/0x60 [ 49.936084] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.941082] ? kfree+0x1e2/0x210 [ 49.944429] device_create_groups_vargs+0x1f4/0x270 [ 49.949425] device_create+0xdf/0x120 [ 49.953203] ? device_create_vargs+0x50/0x50 [ 49.957594] ? pointer+0x850/0x850 [ 49.961118] bdi_register_va.part.0+0x4c/0x750 [ 49.965680] bdi_register+0x12a/0x140 [ 49.969459] ? bdi_register_va+0x80/0x80 [ 49.973512] ? vsnprintf+0x2cc/0x14f0 [ 49.977302] bdi_register_owner+0x59/0x100 [ 49.981520] __device_add_disk+0xd58/0x10c0 [ 49.985821] ? sprintf+0xc0/0x100 [ 49.989262] ? blk_alloc_devt+0x2d0/0x2d0 [ 49.993395] ? __raw_spin_lock_init+0x28/0x100 [ 49.997963] ? __lockdep_init_map+0x100/0x5a0 [ 50.002439] loop_add+0x628/0x8a0 [ 50.005871] loop_control_ioctl+0x16c/0x480 [ 50.010172] ? loop_lookup+0x1d0/0x1d0 [ 50.014038] ? __vfs_write+0xff/0x770 [ 50.017826] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 50.022749] ? common_file_perm+0x4e5/0x850 [ 50.027070] ? loop_lookup+0x1d0/0x1d0 [ 50.030941] do_vfs_ioctl+0xcdb/0x12e0 [ 50.034816] ? vfs_write+0x3d7/0x540 [ 50.038509] ? ioctl_preallocate+0x200/0x200 [ 50.042902] ? lock_downgrade+0x720/0x720 [ 50.047031] ? check_preemption_disabled+0x41/0x280 [ 50.052030] ? vfs_write+0x393/0x540 [ 50.055729] ? ksys_write+0x1c8/0x2a0 [ 50.059518] ksys_ioctl+0x9b/0xc0 [ 50.062965] __x64_sys_ioctl+0x6f/0xb0 [ 50.066925] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 50.071485] do_syscall_64+0xf9/0x620 [ 50.075266] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.080434] RIP: 0033:0x7f651f6d30a9 [ 50.084125] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 50.103004] RSP: 002b:00007ffd9dff7cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 50.110688] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f651f6d30a9 [ 50.117934] RDX: 000000000000000c RSI: 0000000000004c80 RDI: 0000000000000003 [ 50.125180] RBP: 00007ffd9dff7d00 R08: 0000000000000002 R09: 0000000000003837 [ 50.132429] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 50.139679] R13: 000000000000c164 R14: 00007ffd9dff7d70 R15: 00007ffd9dff7d54 executing program [ 50.197413] FAULT_INJECTION: forcing a failure. [ 50.197413] name failslab, interval 1, probability 0, space 0, times 0 [ 50.209583] CPU: 0 PID: 8352 Comm: syz-executor168 Not tainted 4.19.211-syzkaller #0 [ 50.217458] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 50.226798] Call Trace: [ 50.229366] dump_stack+0x1fc/0x2ef [ 50.232988] should_fail.cold+0xa/0xf [ 50.236779] ? setup_fault_attr+0x200/0x200 [ 50.241349] ? lock_acquire+0x170/0x3c0 [ 50.245310] __should_failslab+0x115/0x180 [ 50.249548] should_failslab+0x5/0x10 [ 50.253327] __kmalloc_track_caller+0x2a6/0x3c0 [ 50.257978] ? kstrdup_const+0x53/0x80 [ 50.261858] kstrdup+0x36/0x70 [ 50.265031] kstrdup_const+0x53/0x80 [ 50.268727] kvasprintf_const+0x15b/0x190 [ 50.272858] kobject_set_name_vargs+0x56/0x150 [ 50.277421] device_create_groups_vargs+0x1b1/0x270 [ 50.282421] device_create+0xdf/0x120 [ 50.286209] ? device_create_vargs+0x50/0x50 [ 50.290599] ? pointer+0x850/0x850 [ 50.294123] bdi_register_va.part.0+0x4c/0x750 [ 50.298686] bdi_register+0x12a/0x140 [ 50.302466] ? bdi_register_va+0x80/0x80 [ 50.306516] ? vsnprintf+0x2cc/0x14f0 [ 50.310297] bdi_register_owner+0x59/0x100 [ 50.314531] __device_add_disk+0xd58/0x10c0 [ 50.318850] ? sprintf+0xc0/0x100 [ 50.322384] ? blk_alloc_devt+0x2d0/0x2d0 [ 50.326540] ? __raw_spin_lock_init+0x28/0x100 [ 50.331113] ? __lockdep_init_map+0x100/0x5a0 [ 50.335595] loop_add+0x628/0x8a0 [ 50.339033] loop_control_ioctl+0x16c/0x480 [ 50.343354] ? loop_lookup+0x1d0/0x1d0 [ 50.347240] ? __vfs_write+0xff/0x770 [ 50.351024] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 50.355937] ? common_file_perm+0x4e5/0x850 [ 50.360244] ? loop_lookup+0x1d0/0x1d0 [ 50.364114] do_vfs_ioctl+0xcdb/0x12e0 [ 50.367985] ? vfs_write+0x3d7/0x540 [ 50.371685] ? ioctl_preallocate+0x200/0x200 [ 50.376094] ? lock_downgrade+0x720/0x720 [ 50.380229] ? check_preemption_disabled+0x41/0x280 [ 50.385234] ? vfs_write+0x393/0x540 [ 50.388942] ? ksys_write+0x1c8/0x2a0 [ 50.392740] ksys_ioctl+0x9b/0xc0 [ 50.396192] __x64_sys_ioctl+0x6f/0xb0 [ 50.400061] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 50.404636] do_syscall_64+0xf9/0x620 [ 50.408425] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.413614] RIP: 0033:0x7f651f6d30a9 [ 50.417312] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 50.436204] RSP: 002b:00007ffd9dff7cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 50.443904] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f651f6d30a9 [ 50.451155] RDX: 000000000000000c RSI: 0000000000004c80 RDI: 0000000000000003 [ 50.458411] RBP: 00007ffd9dff7d00 R08: 0000000000000002 R09: 0000000000003837 [ 50.465666] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 50.472924] R13: 000000000000c2bf R14: 00007ffd9dff7d70 R15: 00007ffd9dff7d54 [ 50.483571] ------------[ cut here ]------------ [ 50.488732] WARNING: CPU: 1 PID: 8352 at block/genhd.c:719 __device_add_disk.cold+0x69/0x188 [ 50.497306] Kernel panic - not syncing: panic_on_warn set ... [ 50.497306] [ 50.504663] CPU: 1 PID: 8352 Comm: syz-executor168 Not tainted 4.19.211-syzkaller #0 [ 50.512536] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 50.521870] Call Trace: [ 50.524443] dump_stack+0x1fc/0x2ef [ 50.528054] panic+0x26a/0x50e [ 50.531257] ? __warn_printk+0xf3/0xf3 [ 50.535130] ? __device_add_disk.cold+0x69/0x188 [ 50.539888] ? __probe_kernel_read+0x130/0x1b0 [ 50.544450] ? __warn.cold+0x5/0x5a [ 50.548069] ? __warn+0xe4/0x200 [ 50.551422] ? __device_add_disk.cold+0x69/0x188 [ 50.556168] __warn.cold+0x20/0x5a [ 50.559696] ? io_schedule_timeout+0x140/0x140 [ 50.564261] ? __device_add_disk.cold+0x69/0x188 [ 50.568999] report_bug+0x262/0x2b0 [ 50.572642] do_error_trap+0x1d7/0x310 [ 50.576538] ? math_error+0x310/0x310 [ 50.580325] ? __irq_work_queue_local+0x101/0x160 [ 50.585150] ? irq_work_queue+0x29/0x80 [ 50.589118] ? error_entry+0x72/0xd0 [ 50.592901] ? trace_hardirqs_off_caller+0x6e/0x210 [ 50.598010] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.602850] invalid_op+0x14/0x20 [ 50.606289] RIP: 0010:__device_add_disk.cold+0x69/0x188 [ 50.611688] Code: 02 84 c0 74 08 3c 03 0f 8e a8 00 00 00 44 8b a5 f0 05 00 00 e9 67 ad 6a fb e8 05 45 66 f9 48 c7 c7 60 75 b2 88 e8 64 76 f7 ff <0f> 0b e9 8f b9 6a fb e8 ed 44 66 f9 48 c7 c7 60 75 b2 88 e8 4c 76 [ 50.630588] RSP: 0018:ffff8880af07fb38 EFLAGS: 00010286 [ 50.635931] RAX: 0000000000000024 RBX: 0000000000000001 RCX: 0000000000000000 [ 50.643187] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1015e0ff59 [ 50.650432] RBP: ffff888093ca6a40 R08: 0000000000000024 R09: 0000000000000000 [ 50.657679] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888093ca6ad0 [ 50.664944] R13: ffff888093ca70d0 R14: 00000000fffffff4 R15: ffff888093ca6a44 [ 50.672205] ? vprintk_func+0x81/0x180 [ 50.676078] ? __device_add_disk.cold+0x69/0x188 [ 50.680816] ? sprintf+0xc0/0x100 [ 50.684250] ? blk_alloc_devt+0x2d0/0x2d0 [ 50.688400] ? __raw_spin_lock_init+0x28/0x100 [ 50.692972] ? __lockdep_init_map+0x100/0x5a0 [ 50.697464] loop_add+0x628/0x8a0 [ 50.700901] loop_control_ioctl+0x16c/0x480 [ 50.705202] ? loop_lookup+0x1d0/0x1d0 [ 50.709069] ? __vfs_write+0xff/0x770 [ 50.712873] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 50.717782] ? common_file_perm+0x4e5/0x850 [ 50.722240] ? loop_lookup+0x1d0/0x1d0 [ 50.726114] do_vfs_ioctl+0xcdb/0x12e0 [ 50.729985] ? vfs_write+0x3d7/0x540 [ 50.733694] ? ioctl_preallocate+0x200/0x200 [ 50.738092] ? lock_downgrade+0x720/0x720 [ 50.742226] ? check_preemption_disabled+0x41/0x280 [ 50.747226] ? vfs_write+0x393/0x540 [ 50.750926] ? ksys_write+0x1c8/0x2a0 [ 50.754731] ksys_ioctl+0x9b/0xc0 [ 50.758167] __x64_sys_ioctl+0x6f/0xb0 [ 50.762051] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 50.766618] do_syscall_64+0xf9/0x620 [ 50.770404] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.775579] RIP: 0033:0x7f651f6d30a9 [ 50.779276] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 50.798155] RSP: 002b:00007ffd9dff7cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 50.805842] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f651f6d30a9 [ 50.813103] RDX: 000000000000000c RSI: 0000000000004c80 RDI: 0000000000000003 [ 50.820359] RBP: 00007ffd9dff7d00 R08: 0000000000000002 R09: 0000000000003837 [ 50.827608] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 50.834858] R13: 000000000000c2bf R14: 00007ffd9dff7d70 R15: 00007ffd9dff7d54 [ 50.842476] Kernel Offset: disabled [ 50.846163] Rebooting in 86400 seconds..