./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor424638895
<...>
forked to background, child pid 4641
no interfaces have a carrier
[ 27.774346][ T4642] 8021q: adding VLAN 0 to HW filter on device bond0
[ 27.784558][ T4642] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK
syzkaller
Warning: Permanently added '10.128.0.153' (ECDSA) to the list of known hosts.
execve("./syz-executor424638895", ["./syz-executor424638895"], 0x7ffc95776480 /* 10 vars */) = 0
brk(NULL) = 0x5555573c7000
brk(0x5555573c7c40) = 0x5555573c7c40
arch_prctl(ARCH_SET_FS, 0x5555573c7300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor424638895", 4096) = 27
brk(0x5555573e8c40) = 0x5555573e8c40
brk(0x5555573e9000) = 0x5555573e9000
mprotect(0x7f2dfbdb0000, 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
memfd_create("syzkaller", 0) = 3
mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2df38f6000
write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
munmap(0x7f2df38f6000, 4194304) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
ioctl(4, LOOP_SET_FD, 3) = 0
close(3) = 0
mkdir("./file0", 0777) = 0
syzkaller login: [ 50.695370][ T5069] loop0: detected capacity change from 0 to 8192
[ 50.706337][ T5069] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 50.719385][ T5069] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal
[ 50.728610][ T5069] REISERFS (device loop0): using ordered data mode
[ 50.735158][ T5069] reiserfs: using flush barriers
[ 50.740800][ T5069] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 50.757202][ T5069] REISERFS (device loop0): checking transaction log (loop0)
[ 50.795467][ T5069] REISERFS (device loop0): Using r5 hash to sort names
[ 50.802929][ T5069] ------------[ cut here ]------------
[ 50.808405][ T5069] WARNING: CPU: 1 PID: 5069 at fs/inode.c:330 drop_nlink+0xbb/0x110
[ 50.816449][ T5069] Modules linked in:
[ 50.820383][ T5069] CPU: 1 PID: 5069 Comm: syz-executor424 Not tainted 6.1.0-syzkaller-13139-gf9ff5644bcc0 #0
[ 50.830476][ T5069] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 50.840578][ T5069] RIP: 0010:drop_nlink+0xbb/0x110
[ 50.845614][ T5069] Code: 28 be 08 00 00 00 48 8d bb c0 07 00 00 e8 6d 15 ea ff f0 48 ff 83 c0 07 00 00 5b 5d 41 5c 41 5d e9 4a 0e 9c ff e8 45 0e 9c ff <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 0f b6 04
[ 50.865262][ T5069] RSP: 0018:ffffc90003a9f998 EFLAGS: 00010293
[ 50.871390][ T5069] RAX: 0000000000000000 RBX: ffff888078f80190 RCX: 0000000000000000
[ 50.879386][ T5069] RDX: ffff8880235b8000 RSI: ffffffff81e542bb RDI: 0000000000000005
[ 50.887418][ T5069] RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
[ 50.895460][ T5069] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffff
[ 50.903520][ T5069] R13: ffff888078f801d8 R14: ffffc90003a9fa40 R15: ffff888078f801b8
[ 50.911613][ T5069] FS: 00005555573c7300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
[ 50.920603][ T5069] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 50.927227][ T5069] CR2: 00007fe01a3f5a70 CR3: 0000000026628000 CR4: 0000000000350ee0
[ 50.935268][ T5069] Call Trace:
[ 50.938557][ T5069]
[ 50.941536][ T5069] reiserfs_mkdir+0x79a/0x990
[ 50.946253][ T5069] ? reiserfs_mknod+0x710/0x710
[ 50.951144][ T5069] ? down_write_killable+0x250/0x250
[ 50.956546][ T5069] reiserfs_xattr_init+0x57e/0xc30
[ 50.961722][ T5069] reiserfs_fill_super+0x212b/0x2e90
[ 50.967039][ T5069] ? reiserfs_remount+0x1540/0x1540
[ 50.972275][ T5069] ? sget+0x476/0x580
[ 50.976283][ T5069] ? snprintf+0xbf/0x100
[ 50.980595][ T5069] mount_bdev+0x351/0x410
[ 50.984951][ T5069] ? reiserfs_remount+0x1540/0x1540
[ 50.990187][ T5069] ? reiserfs_kill_sb+0x1e0/0x1e0
[ 50.995238][ T5069] legacy_get_tree+0x109/0x220
[ 51.000063][ T5069] vfs_get_tree+0x8d/0x2f0
[ 51.004502][ T5069] path_mount+0x132a/0x1e20
[ 51.008997][ T5069] ? kmem_cache_free+0xee/0x5c0
[ 51.013988][ T5069] ? finish_automount+0x960/0x960
[ 51.019048][ T5069] ? putname+0x102/0x140
[ 51.023387][ T5069] __x64_sys_mount+0x283/0x300
[ 51.028187][ T5069] ? copy_mnt_ns+0xb30/0xb30
[ 51.032872][ T5069] ? lockdep_hardirqs_on+0x7d/0x100
[ 51.038111][ T5069] ? _raw_spin_unlock_irq+0x2e/0x50
[ 51.043373][ T5069] ? ptrace_notify+0xfe/0x140
[ 51.048069][ T5069] do_syscall_64+0x39/0xb0
[ 51.052616][ T5069] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 51.058534][ T5069] RIP: 0033:0x7f2dfbd43aea
[ 51.062992][ T5069] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
[ 51.082673][ T5069] RSP: 002b:00007ffc63ba3bc8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
[ 51.091114][ T5069] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2dfbd43aea
[ 51.099078][ T5069] RDX: 0000000020001100 RSI: 0000000020001140 RDI: 00007ffc63ba3be0
[ 51.107095][ T5069] RBP: 00007ffc63ba3be0 R08: 00007ffc63ba3c20 R09: 00000000000010f4
[ 51.115094][ T5069] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004
[ 51.123141][ T5069] R13: 00005555573c72c0 R14: 0000000000000000 R15: 00007ffc63ba3c20
[ 51.131210][ T5069]
[ 51.134235][ T5069] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 51.141492][ T5069] CPU: 0 PID: 5069 Comm: syz-executor424 Not tainted 6.1.0-syzkaller-13139-gf9ff5644bcc0 #0
[ 51.151536][ T5069] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 51.161574][ T5069] Call Trace:
[ 51.164834][ T5069]
[ 51.167745][ T5069] dump_stack_lvl+0xd1/0x138
[ 51.172337][ T5069] panic+0x2cc/0x626
[ 51.176215][ T5069] ? panic_print_sys_info.part.0+0x110/0x110
[ 51.182185][ T5069] ? drop_nlink+0xbb/0x110
[ 51.186587][ T5069] check_panic_on_warn.cold+0x19/0x35
[ 51.191945][ T5069] __warn+0xf2/0x1a0
[ 51.195826][ T5069] ? drop_nlink+0xbb/0x110
[ 51.200231][ T5069] report_bug+0x1c0/0x210
[ 51.204552][ T5069] handle_bug+0x3c/0x70
[ 51.208694][ T5069] exc_invalid_op+0x18/0x50
[ 51.213197][ T5069] asm_exc_invalid_op+0x1a/0x20
[ 51.218026][ T5069] RIP: 0010:drop_nlink+0xbb/0x110
[ 51.223039][ T5069] Code: 28 be 08 00 00 00 48 8d bb c0 07 00 00 e8 6d 15 ea ff f0 48 ff 83 c0 07 00 00 5b 5d 41 5c 41 5d e9 4a 0e 9c ff e8 45 0e 9c ff <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 0f b6 04
[ 51.242630][ T5069] RSP: 0018:ffffc90003a9f998 EFLAGS: 00010293
[ 51.248677][ T5069] RAX: 0000000000000000 RBX: ffff888078f80190 RCX: 0000000000000000
[ 51.256627][ T5069] RDX: ffff8880235b8000 RSI: ffffffff81e542bb RDI: 0000000000000005
[ 51.264592][ T5069] RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
[ 51.272546][ T5069] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffff
[ 51.280501][ T5069] R13: ffff888078f801d8 R14: ffffc90003a9fa40 R15: ffff888078f801b8
[ 51.288478][ T5069] ? drop_nlink+0xbb/0x110
[ 51.292880][ T5069] ? drop_nlink+0xbb/0x110
[ 51.297279][ T5069] reiserfs_mkdir+0x79a/0x990
[ 51.301943][ T5069] ? reiserfs_mknod+0x710/0x710
[ 51.306782][ T5069] ? down_write_killable+0x250/0x250
[ 51.312055][ T5069] reiserfs_xattr_init+0x57e/0xc30
[ 51.317149][ T5069] reiserfs_fill_super+0x212b/0x2e90
[ 51.322424][ T5069] ? reiserfs_remount+0x1540/0x1540
[ 51.327605][ T5069] ? sget+0x476/0x580
[ 51.331577][ T5069] ? snprintf+0xbf/0x100
[ 51.335811][ T5069] mount_bdev+0x351/0x410
[ 51.340125][ T5069] ? reiserfs_remount+0x1540/0x1540
[ 51.345396][ T5069] ? reiserfs_kill_sb+0x1e0/0x1e0
[ 51.350401][ T5069] legacy_get_tree+0x109/0x220
[ 51.355154][ T5069] vfs_get_tree+0x8d/0x2f0
[ 51.359556][ T5069] path_mount+0x132a/0x1e20
[ 51.364051][ T5069] ? kmem_cache_free+0xee/0x5c0
[ 51.368881][ T5069] ? finish_automount+0x960/0x960
[ 51.373980][ T5069] ? putname+0x102/0x140
[ 51.378208][ T5069] __x64_sys_mount+0x283/0x300
[ 51.382963][ T5069] ? copy_mnt_ns+0xb30/0xb30
[ 51.387535][ T5069] ? lockdep_hardirqs_on+0x7d/0x100
[ 51.392726][ T5069] ? _raw_spin_unlock_irq+0x2e/0x50
[ 51.397918][ T5069] ? ptrace_notify+0xfe/0x140
[ 51.402579][ T5069] do_syscall_64+0x39/0xb0
[ 51.406983][ T5069] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 51.412857][ T5069] RIP: 0033:0x7f2dfbd43aea
[ 51.417251][ T5069] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
[ 51.436839][ T5069] RSP: 002b:00007ffc63ba3bc8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
[ 51.445236][ T5069] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2dfbd43aea
[ 51.453190][ T5069] RDX: 0000000020001100 RSI: 0000000020001140 RDI: 00007ffc63ba3be0
[ 51.461146][ T5069] RBP: 00007ffc63ba3be0 R08: 00007ffc63ba3c20 R09: 00000000000010f4
[ 51.469100][ T5069] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004
[ 51.477051][ T5069] R13: 00005555573c72c0 R14: 0000000000000000 R15: 00007ffc63ba3c20
[ 51.485013][ T5069]
[ 51.488951][ T5069] Kernel Offset: disabled
[ 51.493321][ T5069] Rebooting in 86400 seconds..