./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2317572755 <...> Warning: Permanently added '10.128.0.157' (ECDSA) to the list of known hosts. execve("./syz-executor2317572755", ["./syz-executor2317572755"], 0x7fff4ee8cfe0 /* 10 vars */) = 0 brk(NULL) = 0x555556bcf000 brk(0x555556bcfc40) = 0x555556bcfc40 arch_prctl(ARCH_SET_FS, 0x555556bcf300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2317572755", 4096) = 28 brk(0x555556bf0c40) = 0x555556bf0c40 brk(0x555556bf1000) = 0x555556bf1000 mprotect(0x7f9e3c150000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/dev/nbd0", O_RDONLY|O_EXCL) = 3 syzkaller login: [ 51.725596][ T5024] ------------[ cut here ]------------ [ 51.731298][ T5024] WARNING: CPU: 1 PID: 5024 at block/bdev.c:794 blkdev_get_by_dev.part.0+0x8ea/0xb50 [ 51.740825][ T5024] Modules linked in: [ 51.744762][ T5024] CPU: 1 PID: 5024 Comm: syz-executor231 Not tainted 6.4.0-rc6-next-20230613-syzkaller #0 [ 51.754674][ T5024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 51.764906][ T5024] RIP: 0010:blkdev_get_by_dev.part.0+0x8ea/0xb50 [ 51.771342][ T5024] Code: 44 24 08 e8 c8 94 7c fd 48 85 ed 4c 63 6c 24 08 0f 85 5f fe ff ff e9 ca fe ff ff e8 40 62 e3 fd e9 fe f8 ff ff e8 86 23 90 fd <0f> 0b 49 c7 c5 fb ff ff ff e9 c2 fe ff ff e8 73 23 90 fd 48 8b 44 [ 51.790983][ T5024] RSP: 0018:ffffc90003a0fc98 EFLAGS: 00010293 [ 51.797041][ T5024] RAX: 0000000000000000 RBX: ffff88801e5f2e00 RCX: 0000000000000000 [ 51.805049][ T5024] RDX: ffff88807e089dc0 RSI: ffffffff83f4524a RDI: 0000000000000005 [ 51.813086][ T5024] RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 [ 51.821118][ T5024] R10: 0000000000000004 R11: 0000000000000001 R12: ffff88801fc56000 [ 51.829105][ T5024] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000004 [ 51.837130][ T5024] FS: 0000555556bcf300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 51.846134][ T5024] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.852761][ T5024] CR2: 00000000005fdeb8 CR3: 000000007ceb9000 CR4: 00000000003506e0 [ 51.860760][ T5024] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.868717][ T5024] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.876745][ T5024] Call Trace: [ 51.880031][ T5024] [ 51.882993][ T5024] ? __warn+0xe6/0x390 [ 51.887086][ T5024] ? blkdev_get_by_dev.part.0+0x8ea/0xb50 [ 51.892849][ T5024] ? report_bug+0x2da/0x500 [ 51.897388][ T5024] ? handle_bug+0x3c/0x70 [ 51.901773][ T5024] ? exc_invalid_op+0x18/0x50 [ 51.906475][ T5024] ? asm_exc_invalid_op+0x1a/0x20 [ 51.911554][ T5024] ? blkdev_get_by_dev.part.0+0x8ea/0xb50 [ 51.917305][ T5024] ? blkdev_get_by_dev.part.0+0x8ea/0xb50 [ 51.923103][ T5024] ? blkdev_get_by_dev.part.0+0x8ea/0xb50 [ 51.928854][ T5024] ? devcgroup_check_permission+0x1aa/0x4a0 [ 51.934795][ T5024] blkdev_get_by_dev+0x79/0x80 [ 51.939582][ T5024] disk_scan_partitions+0x1e2/0x300 [ 51.944820][ T5024] blkdev_common_ioctl+0x5b8/0x1a40 [ 51.950044][ T5024] ? blkdev_bszset+0x1f0/0x1f0 [ 51.954866][ T5024] ? find_held_lock+0x2d/0x110 [ 51.959689][ T5024] ? ptrace_notify+0xfe/0x140 [ 51.964454][ T5024] blkdev_ioctl+0x24f/0x760 [ 51.968980][ T5024] ? blkdev_common_ioctl+0x1a40/0x1a40 [ 51.974496][ T5024] ? bpf_lsm_file_ioctl+0x9/0x10 [ 51.979500][ T5024] ? blkdev_common_ioctl+0x1a40/0x1a40 [ 51.985003][ T5024] __x64_sys_ioctl+0x19d/0x210 [ 51.989784][ T5024] do_syscall_64+0x39/0xb0 [ 51.994249][ T5024] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 52.000166][ T5024] RIP: 0033:0x7f9e3c0e35c9 [ 52.004611][ T5024] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 [ 52.024274][ T5024] RSP: 002b:00007ffc336b7018 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 52.032718][ T5024] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9e3c0e35c9 [ 52.040716][ T5024] RDX: 0000000000000000 RSI: 000000000000125f RDI: 0000000000000003 [ 52.048677][ T5024] RBP: 00007f9e3c0a30d0 R08: 0000000000000000 R09: 0000000000000000 [ 52.056682][ T5024] R10: 000000000000ffff R11: 0000000000000246 R12: 00007f9e3c0a3160 [ 52.064681][ T5024] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 52.072706][ T5024] [ 52.075729][ T5024] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 52.082996][ T5024] CPU: 1 PID: 5024 Comm: syz-executor231 Not tainted 6.4.0-rc6-next-20230613-syzkaller #0 [ 52.092883][ T5024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 52.102931][ T5024] Call Trace: [ 52.106207][ T5024] [ 52.109158][ T5024] dump_stack_lvl+0xd9/0x150 [ 52.113760][ T5024] panic+0x686/0x730 [ 52.117667][ T5024] ? panic_smp_self_stop+0xa0/0xa0 [ 52.122796][ T5024] ? show_trace_log_lvl+0x284/0x390 [ 52.128018][ T5024] ? blkdev_get_by_dev.part.0+0x8ea/0xb50 [ 52.133770][ T5024] check_panic_on_warn+0xb1/0xc0 [ 52.138775][ T5024] __warn+0xf2/0x390 [ 52.142725][ T5024] ? blkdev_get_by_dev.part.0+0x8ea/0xb50 [ 52.148460][ T5024] report_bug+0x2da/0x500 [ 52.152811][ T5024] handle_bug+0x3c/0x70 [ 52.156985][ T5024] exc_invalid_op+0x18/0x50 [ 52.161508][ T5024] asm_exc_invalid_op+0x1a/0x20 [ 52.166364][ T5024] RIP: 0010:blkdev_get_by_dev.part.0+0x8ea/0xb50 [ 52.172705][ T5024] Code: 44 24 08 e8 c8 94 7c fd 48 85 ed 4c 63 6c 24 08 0f 85 5f fe ff ff e9 ca fe ff ff e8 40 62 e3 fd e9 fe f8 ff ff e8 86 23 90 fd <0f> 0b 49 c7 c5 fb ff ff ff e9 c2 fe ff ff e8 73 23 90 fd 48 8b 44 [ 52.192322][ T5024] RSP: 0018:ffffc90003a0fc98 EFLAGS: 00010293 [ 52.198388][ T5024] RAX: 0000000000000000 RBX: ffff88801e5f2e00 RCX: 0000000000000000 [ 52.206361][ T5024] RDX: ffff88807e089dc0 RSI: ffffffff83f4524a RDI: 0000000000000005 [ 52.214333][ T5024] RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 [ 52.222368][ T5024] R10: 0000000000000004 R11: 0000000000000001 R12: ffff88801fc56000 [ 52.230338][ T5024] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000004 [ 52.238322][ T5024] ? blkdev_get_by_dev.part.0+0x8ea/0xb50 [ 52.244061][ T5024] ? blkdev_get_by_dev.part.0+0x8ea/0xb50 [ 52.249890][ T5024] ? devcgroup_check_permission+0x1aa/0x4a0 [ 52.255806][ T5024] blkdev_get_by_dev+0x79/0x80 [ 52.260584][ T5024] disk_scan_partitions+0x1e2/0x300 [ 52.265792][ T5024] blkdev_common_ioctl+0x5b8/0x1a40 [ 52.270998][ T5024] ? blkdev_bszset+0x1f0/0x1f0 [ 52.275767][ T5024] ? find_held_lock+0x2d/0x110 [ 52.280544][ T5024] ? ptrace_notify+0xfe/0x140 [ 52.285234][ T5024] blkdev_ioctl+0x24f/0x760 [ 52.289739][ T5024] ? blkdev_common_ioctl+0x1a40/0x1a40 [ 52.295204][ T5024] ? bpf_lsm_file_ioctl+0x9/0x10 [ 52.300156][ T5024] ? blkdev_common_ioctl+0x1a40/0x1a40 [ 52.305619][ T5024] __x64_sys_ioctl+0x19d/0x210 [ 52.310388][ T5024] do_syscall_64+0x39/0xb0 [ 52.314811][ T5024] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 52.320709][ T5024] RIP: 0033:0x7f9e3c0e35c9 [ 52.325123][ T5024] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 [ 52.344732][ T5024] RSP: 002b:00007ffc336b7018 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 52.353155][ T5024] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9e3c0e35c9 [ 52.361140][ T5024] RDX: 0000000000000000 RSI: 000000000000125f RDI: 0000000000000003 [ 52.369120][ T5024] RBP: 00007f9e3c0a30d0 R08: 0000000000000000 R09: 0000000000000000 [ 52.377092][ T5024] R10: 000000000000ffff R11: 0000000000000246 R12: 00007f9e3c0a3160 [ 52.385063][ T5024] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 52.393135][ T5024] [ 52.396292][ T5024] Kernel Offset: disabled [ 52.400772][ T5024] Rebooting in 86400 seconds..