Warning: Permanently added '10.128.0.69' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 37.694360] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 37.707123] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 37.716404] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 37.725326] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 37.734016] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. executing program executing program executing program executing program executing program executing program [ 37.820724] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 37.833037] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 37.844932] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 37.855198] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 37.863898] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 40.352732] nbd: nbd2 already in use executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 42.716078] nla_parse: 520 callbacks suppressed [ 42.716094] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 42.735617] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 42.746611] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 42.757506] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. executing program [ 42.767056] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 42.825511] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 42.844317] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 42.859442] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. executing program [ 42.869071] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 42.878624] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 44.518390] nbd: nbd3 already in use executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.727209] nla_parse: 510 callbacks suppressed [ 47.727219] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 47.756629] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 47.766171] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 47.775605] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 47.784281] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. executing program executing program executing program executing program executing program executing program [ 47.858972] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 47.874062] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 47.887424] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 47.896775] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. executing program executing program executing program executing program [ 47.906521] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.670872] nbd: nbd5 already in use executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 50.319598] nbd: nbd4 already in use executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 50.877610] nbd: nbd0 already in use executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 51.309380] nbd: nbd0 already in use executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 51.905429] nbd: nbd3 already in use executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 52.487754] nbd: nbd0 already in use executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 52.758034] nla_parse: 505 callbacks suppressed [ 52.758043] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 52.774890] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 52.785231] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 52.794472] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 52.812356] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. executing program [ 52.863899] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 52.872754] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 52.883037] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 52.892549] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. [ 52.901869] netlink: 4 bytes leftover after parsing attributes in process `syz-executor751'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.615368] ================================================================== [ 53.622952] BUG: KASAN: use-after-free in ex_handler_refcount+0x18f/0x1c0 [ 53.630520] Write of size 4 at addr ffff8880aa6563d8 by task systemd-udevd/11854 [ 53.638054] [ 53.639805] CPU: 1 PID: 11854 Comm: systemd-udevd Not tainted 4.19.188-syzkaller #0 [ 53.647703] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.657055] Call Trace: [ 53.659658] dump_stack+0x1fc/0x2ef [ 53.663310] print_address_description.cold+0x54/0x219 [ 53.668600] kasan_report_error.cold+0x8a/0x1b9 [ 53.673275] ? ex_handler_refcount+0x18f/0x1c0 [ 53.677875] __asan_report_store4_noabort+0x88/0x90 [ 53.682990] ? ex_handler_refcount+0x18f/0x1c0 [ 53.687575] ex_handler_refcount+0x18f/0x1c0 [ 53.691986] ? ex_handler_clear_fs+0xb0/0xb0 [ 53.696433] fixup_exception+0x8a/0xd0 [ 53.700331] do_trap+0x61/0x250 [ 53.703621] do_error_trap+0x15d/0x310 [ 53.707523] ? math_error+0x310/0x310 [ 53.711377] ? __noinstr_text_end+0x2446/0x77e7 [ 53.716092] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 53.720951] invalid_op+0x14/0x20 [ 53.724435] RIP: 0010:__noinstr_text_end+0x2446/0x77e7 [ 53.729705] Code: 0f 0b 48 8d 4b 50 0f 0b 48 8d 4b 08 0f 0b 48 8d 4d 08 0f 0b 48 8d 8d 08 02 00 00 0f 0b 48 8d 0b 0f 0b 48 8d 0b 0f 0b 48 8d 0b <0f> 0b 48 8d 4d 00 0f 0b 49 8d 0c 24 0f 0b 48 8d 8b c0 00 00 00 0f [ 53.748630] RSP: 0018:ffff88809371fcd8 EFLAGS: 00010296 [ 53.754010] RAX: 0000000000000000 RBX: ffff8880aa6563d8 RCX: ffff8880aa6563d8 [ 53.761305] RDX: 0000000000000004 RSI: 0000000000000004 RDI: 0000000000000001 [ 53.768578] RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff14b7819 [ 53.775858] R10: ffffffff8a5bc0cb R11: 0000000000000000 R12: ffffffff8a5bc0c0 [ 53.783129] R13: 0000000000000000 R14: 1ffff1101191865d R15: dffffc0000000000 [ 53.790517] ? refcount_dec_and_mutex_lock+0x4a/0x80 [ 53.795648] nbd_release+0x108/0x170 [ 53.799364] ? nbd_queue_rq+0xe60/0xe60 [ 53.803339] __blkdev_put+0x636/0x870 [ 53.807153] ? fsync_bdev+0xc0/0xc0 [ 53.810770] ? locks_remove_file+0x2cd/0x450 [ 53.815203] ? blkdev_put+0x85/0x520 [ 53.818937] ? blkdev_put+0x520/0x520 [ 53.822737] blkdev_close+0x86/0xb0 [ 53.826370] __fput+0x2ce/0x890 [ 53.829649] task_work_run+0x148/0x1c0 [ 53.833534] exit_to_usermode_loop+0x251/0x2a0 [ 53.838157] do_syscall_64+0x538/0x620 [ 53.842050] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.847239] RIP: 0033:0x7f0132d73270 [ 53.850947] Code: 73 01 c3 48 8b 0d 38 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 59 c1 20 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ee fb ff ff 48 89 04 24 [ 53.869947] RSP: 002b:00007ffff19806f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 53.877664] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007f0132d73270 [ 53.884954] RDX: 000000000aba9500 RSI: 0000000000000000 RDI: 0000000000000007 [ 53.892244] RBP: 00007f0133c2d710 R08: 0000000000000045 R09: 0000000000000018 [ 53.899512] R10: 000055c5b5defc48 R11: 0000000000000246 R12: 0000000000000000 [ 53.906782] R13: 000055c5b5defcd0 R14: 0000000000000003 R15: 000000000000000e [ 53.914046] [ 53.915659] Allocated by task 11839: [ 53.919364] kmem_cache_alloc_trace+0x12f/0x380 [ 53.924027] nbd_dev_add+0x44/0x890 [ 53.927657] nbd_genl_connect+0x488/0x1630 [ 53.931917] genl_family_rcv_msg+0x642/0xc40 [ 53.936314] genl_rcv_msg+0xbf/0x160 [ 53.940043] netlink_rcv_skb+0x160/0x440 [ 53.944092] genl_rcv+0x24/0x40 [ 53.947382] netlink_unicast+0x4d5/0x690 [ 53.951550] netlink_sendmsg+0x6bb/0xc40 [ 53.955691] sock_sendmsg+0xc3/0x120 [ 53.959420] ___sys_sendmsg+0x7bb/0x8e0 [ 53.963403] __x64_sys_sendmsg+0x132/0x220 [ 53.967643] do_syscall_64+0xf9/0x620 [ 53.971506] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.976680] [ 53.978347] Freed by task 11862: [ 53.981699] kfree+0xcc/0x210 [ 53.984790] nbd_put.part.0+0xfe/0x140 [ 53.988664] nbd_genl_connect+0x120e/0x1630 [ 53.992994] genl_family_rcv_msg+0x642/0xc40 [ 53.997413] genl_rcv_msg+0xbf/0x160 [ 54.001130] netlink_rcv_skb+0x160/0x440 [ 54.005177] genl_rcv+0x24/0x40 [ 54.008441] netlink_unicast+0x4d5/0x690 [ 54.012487] netlink_sendmsg+0x6bb/0xc40 [ 54.016632] sock_sendmsg+0xc3/0x120 [ 54.020331] ___sys_sendmsg+0x7bb/0x8e0 [ 54.024292] __x64_sys_sendmsg+0x132/0x220 [ 54.028513] do_syscall_64+0xf9/0x620 [ 54.032316] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.037481] [ 54.039093] The buggy address belongs to the object at ffff8880aa656300 [ 54.039093] which belongs to the cache kmalloc-512 of size 512 [ 54.051757] The buggy address is located 216 bytes inside of [ 54.051757] 512-byte region [ffff8880aa656300, ffff8880aa656500) [ 54.063648] The buggy address belongs to the page: [ 54.068972] page:ffffea0002a99580 count:1 mapcount:0 mapping:ffff88813bff0940 index:0x0 [ 54.077123] flags: 0xfff00000000100(slab) [ 54.081273] raw: 00fff00000000100 ffffea00026a4c48 ffffea0002cf7dc8 ffff88813bff0940 [ 54.089423] raw: 0000000000000000 ffff8880aa656080 0000000100000006 0000000000000000 [ 54.097308] page dumped because: kasan: bad access detected [ 54.103024] [ 54.104652] Memory state around the buggy address: [ 54.109573] ffff8880aa656280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc executing program [ 54.116942] ffff8880aa656300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 54.124309] >ffff8880aa656380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 54.131683] ^ [ 54.137933] ffff8880aa656400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 54.145298] ffff8880aa656480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 54.152647] ================================================================== [ 54.160006] Disabling lock debugging due to kernel taint [ 54.171019] Kernel panic - not syncing: panic_on_warn set ... [ 54.171019] [ 54.178446] CPU: 0 PID: 11854 Comm: systemd-udevd Tainted: G B 4.19.188-syzkaller #0 [ 54.187674] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.197033] Call Trace: [ 54.199647] dump_stack+0x1fc/0x2ef [ 54.203289] panic+0x26a/0x50e [ 54.206511] ? __warn_printk+0xf3/0xf3 [ 54.210419] ? preempt_schedule_common+0x45/0xc0 [ 54.215177] ? ___preempt_schedule+0x16/0x18 [ 54.219577] ? trace_hardirqs_on+0x55/0x210 [ 54.223897] kasan_end_report+0x43/0x49 [ 54.227875] kasan_report_error.cold+0xa7/0x1b9 [ 54.232528] ? ex_handler_refcount+0x18f/0x1c0 [ 54.237112] __asan_report_store4_noabort+0x88/0x90 [ 54.242123] ? ex_handler_refcount+0x18f/0x1c0 [ 54.246699] ex_handler_refcount+0x18f/0x1c0 [ 54.251114] ? ex_handler_clear_fs+0xb0/0xb0 [ 54.255517] fixup_exception+0x8a/0xd0 [ 54.259405] do_trap+0x61/0x250 [ 54.262688] do_error_trap+0x15d/0x310 [ 54.266561] ? math_error+0x310/0x310 [ 54.270348] ? __noinstr_text_end+0x2446/0x77e7 [ 54.275005] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 54.279861] invalid_op+0x14/0x20 [ 54.283417] RIP: 0010:__noinstr_text_end+0x2446/0x77e7 [ 54.288686] Code: 0f 0b 48 8d 4b 50 0f 0b 48 8d 4b 08 0f 0b 48 8d 4d 08 0f 0b 48 8d 8d 08 02 00 00 0f 0b 48 8d 0b 0f 0b 48 8d 0b 0f 0b 48 8d 0b <0f> 0b 48 8d 4d 00 0f 0b 49 8d 0c 24 0f 0b 48 8d 8b c0 00 00 00 0f [ 54.307584] RSP: 0018:ffff88809371fcd8 EFLAGS: 00010296 [ 54.312949] RAX: 0000000000000000 RBX: ffff8880aa6563d8 RCX: ffff8880aa6563d8 [ 54.320251] RDX: 0000000000000004 RSI: 0000000000000004 RDI: 0000000000000001 [ 54.327518] RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff14b7819 [ 54.334806] R10: ffffffff8a5bc0cb R11: 0000000000000000 R12: ffffffff8a5bc0c0 [ 54.342065] R13: 0000000000000000 R14: 1ffff1101191865d R15: dffffc0000000000 [ 54.349350] ? refcount_dec_and_mutex_lock+0x4a/0x80 [ 54.354447] nbd_release+0x108/0x170 [ 54.358154] ? nbd_queue_rq+0xe60/0xe60 [ 54.362127] __blkdev_put+0x636/0x870 [ 54.365957] ? fsync_bdev+0xc0/0xc0 [ 54.369585] ? locks_remove_file+0x2cd/0x450 [ 54.373978] ? blkdev_put+0x85/0x520 [ 54.377695] ? blkdev_put+0x520/0x520 [ 54.381484] blkdev_close+0x86/0xb0 [ 54.385097] __fput+0x2ce/0x890 [ 54.388377] task_work_run+0x148/0x1c0 [ 54.392305] exit_to_usermode_loop+0x251/0x2a0 [ 54.396900] do_syscall_64+0x538/0x620 [ 54.400782] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.405959] RIP: 0033:0x7f0132d73270 [ 54.409662] Code: 73 01 c3 48 8b 0d 38 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 59 c1 20 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ee fb ff ff 48 89 04 24 [ 54.430204] RSP: 002b:00007ffff19806f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 54.438033] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007f0132d73270 [ 54.445291] RDX: 000000000aba9500 RSI: 0000000000000000 RDI: 0000000000000007 [ 54.452549] RBP: 00007f0133c2d710 R08: 0000000000000045 R09: 0000000000000018 [ 54.459804] R10: 000055c5b5defc48 R11: 0000000000000246 R12: 0000000000000000 [ 54.467068] R13: 000055c5b5defcd0 R14: 0000000000000003 R15: 000000000000000e [ 54.474944] Kernel Offset: disabled [ 54.478565] Rebooting in 86400 seconds..