./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2168609635
<...>
DUID 00:04:e6:d8:3e:4c:c1:15:84:42:dc:00:60:8c:e3:5f:26:b4
forked to background, child pid 3212
[ 29.343404][ T3213] 8021q: adding VLAN 0 to HW filter on device bond0
[ 29.353951][ T3213] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK
syzkaller
Warning: Permanently added '10.128.10.33' (ECDSA) to the list of known hosts.
execve("./syz-executor2168609635", ["./syz-executor2168609635"], 0x7ffff9e505d0 /* 10 vars */) = 0
brk(NULL) = 0x555557249000
brk(0x555557249c40) = 0x555557249c40
arch_prctl(ARCH_SET_FS, 0x555557249300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor2168609635", 4096) = 28
brk(0x55555726ac40) = 0x55555726ac40
brk(0x55555726b000) = 0x55555726b000
mprotect(0x7f1e4f29b000, 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) = 0x7f1e46c00000
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(0x7f1e46c00000, 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: [ 52.806509][ T3633] loop0: detected capacity change from 0 to 8192
[ 52.817928][ T3633] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 52.831147][ T3633] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal
[ 52.840528][ T3633] REISERFS (device loop0): using ordered data mode
[ 52.847086][ T3633] reiserfs: using flush barriers
[ 52.853564][ T3633] 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
[ 52.869952][ T3633] REISERFS (device loop0): checking transaction log (loop0)
[ 52.911964][ T3633] REISERFS (device loop0): Using r5 hash to sort names
[ 52.919406][ T3633] ------------[ cut here ]------------
[ 52.925015][ T3633] WARNING: CPU: 1 PID: 3633 at fs/inode.c:330 drop_nlink+0xb9/0x100
[ 52.933072][ T3633] Modules linked in:
[ 52.936949][ T3633] CPU: 1 PID: 3633 Comm: syz-executor216 Not tainted 6.1.0-rc7-syzkaller-00101-g01f856ae6d0c #0
[ 52.947438][ T3633] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 52.957533][ T3633] RIP: 0010:drop_nlink+0xb9/0x100
[ 52.962816][ T3633] Code: 49 8b 1e 48 8d bb c0 07 00 00 be 08 00 00 00 e8 4d ee e9 ff f0 48 ff 83 c0 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 e8 87 d0 95 ff <0f> 0b eb 8a 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 63 ff ff ff 4c
[ 52.982491][ T3633] RSP: 0018:ffffc90003a4f830 EFLAGS: 00010293
[ 52.988562][ T3633] RAX: ffffffff81f4c769 RBX: 1ffff1100e53403b RCX: ffff888021923a80
[ 52.996565][ T3633] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 53.004587][ T3633] RBP: 0000000000000000 R08: ffffffff81f4c6ee R09: fffffbfff20b2e42
[ 53.012595][ T3633] R10: fffffbfff20b2e42 R11: 1ffffffff20b2e41 R12: ffff8880729a01d8
[ 53.020566][ T3633] R13: 00000000ffffffff R14: ffff8880729a0190 R15: dffffc0000000000
[ 53.028583][ T3633] FS: 0000555557249300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
[ 53.037674][ T3633] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 53.044397][ T3633] CR2: 00007ffd12958000 CR3: 000000002252f000 CR4: 00000000003506e0
[ 53.052404][ T3633] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 53.060357][ T3633] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 53.068368][ T3633] Call Trace:
[ 53.071846][ T3633]
[ 53.074769][ T3633] reiserfs_mkdir+0x6dc/0x8b0
[ 53.079437][ T3633] ? reiserfs_symlink+0x750/0x750
[ 53.084508][ T3633] ? down_write+0x1a5/0x270
[ 53.089055][ T3633] ? down_read_killable+0x80/0x80
[ 53.094137][ T3633] ? __up_read+0x690/0x690
[ 53.098561][ T3633] reiserfs_xattr_init+0x34b/0x730
[ 53.103728][ T3633] reiserfs_fill_super+0x20b5/0x24a0
[ 53.109034][ T3633] ? reiserfs_kill_sb+0x150/0x150
[ 53.114095][ T3633] ? snprintf+0xc0/0x110
[ 53.118358][ T3633] mount_bdev+0x26c/0x3a0
[ 53.122732][ T3633] ? reiserfs_kill_sb+0x150/0x150
[ 53.127760][ T3633] legacy_get_tree+0xea/0x180
[ 53.132488][ T3633] ? remove_save_link+0x4a0/0x4a0
[ 53.137522][ T3633] vfs_get_tree+0x88/0x270
[ 53.141988][ T3633] do_new_mount+0x289/0xad0
[ 53.146504][ T3633] ? do_move_mount_old+0x150/0x150
[ 53.151753][ T3633] ? user_path_at_empty+0x149/0x1a0
[ 53.157109][ T3633] __se_sys_mount+0x2d3/0x3c0
[ 53.161868][ T3633] ? __x64_sys_mount+0xc0/0xc0
[ 53.166638][ T3633] ? syscall_enter_from_user_mode+0x2e/0x1d0
[ 53.172656][ T3633] ? __x64_sys_mount+0x1c/0xc0
[ 53.177437][ T3633] do_syscall_64+0x3d/0xb0
[ 53.181915][ T3633] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 53.187813][ T3633] RIP: 0033:0x7f1e4f22eaea
[ 53.192269][ T3633] 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
[ 53.211956][ T3633] RSP: 002b:00007ffd129570a8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
[ 53.220372][ T3633] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1e4f22eaea
[ 53.228473][ T3633] RDX: 0000000020001100 RSI: 0000000020001140 RDI: 00007ffd129570c0
[ 53.236513][ T3633] RBP: 00007ffd129570c0 R08: 00007ffd12957100 R09: 00000000000010f4
[ 53.244591][ T3633] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004
[ 53.252631][ T3633] R13: 00005555572492c0 R14: 0000000000000000 R15: 00007ffd12957100
[ 53.260603][ T3633]
[ 53.263648][ T3633] Kernel panic - not syncing: panic_on_warn set ...
[ 53.270224][ T3633] CPU: 1 PID: 3633 Comm: syz-executor216 Not tainted 6.1.0-rc7-syzkaller-00101-g01f856ae6d0c #0
[ 53.280619][ T3633] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 53.290657][ T3633] Call Trace:
[ 53.293921][ T3633]
[ 53.296836][ T3633] dump_stack_lvl+0x1b1/0x28e
[ 53.301503][ T3633] ? nf_tcp_handle_invalid+0x62e/0x62e
[ 53.306943][ T3633] ? panic+0x710/0x710
[ 53.310998][ T3633] ? vscnprintf+0x59/0x80
[ 53.315311][ T3633] ? drop_nlink+0x50/0x100
[ 53.319714][ T3633] panic+0x2d6/0x710
[ 53.323599][ T3633] ? __warn+0x131/0x220
[ 53.327739][ T3633] ? memcpy_page_flushcache+0xfc/0xfc
[ 53.333100][ T3633] ? drop_nlink+0xb9/0x100
[ 53.337497][ T3633] __warn+0x1fa/0x220
[ 53.341469][ T3633] ? drop_nlink+0xb9/0x100
[ 53.345892][ T3633] report_bug+0x1b3/0x2d0
[ 53.350233][ T3633] handle_bug+0x3d/0x70
[ 53.354386][ T3633] exc_invalid_op+0x16/0x40
[ 53.358885][ T3633] asm_exc_invalid_op+0x16/0x20
[ 53.363752][ T3633] RIP: 0010:drop_nlink+0xb9/0x100
[ 53.368796][ T3633] Code: 49 8b 1e 48 8d bb c0 07 00 00 be 08 00 00 00 e8 4d ee e9 ff f0 48 ff 83 c0 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 e8 87 d0 95 ff <0f> 0b eb 8a 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 63 ff ff ff 4c
[ 53.388404][ T3633] RSP: 0018:ffffc90003a4f830 EFLAGS: 00010293
[ 53.394467][ T3633] RAX: ffffffff81f4c769 RBX: 1ffff1100e53403b RCX: ffff888021923a80
[ 53.402446][ T3633] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 53.410411][ T3633] RBP: 0000000000000000 R08: ffffffff81f4c6ee R09: fffffbfff20b2e42
[ 53.418376][ T3633] R10: fffffbfff20b2e42 R11: 1ffffffff20b2e41 R12: ffff8880729a01d8
[ 53.426337][ T3633] R13: 00000000ffffffff R14: ffff8880729a0190 R15: dffffc0000000000
[ 53.434310][ T3633] ? drop_nlink+0x3e/0x100
[ 53.438723][ T3633] ? drop_nlink+0xb9/0x100
[ 53.443145][ T3633] reiserfs_mkdir+0x6dc/0x8b0
[ 53.447829][ T3633] ? reiserfs_symlink+0x750/0x750
[ 53.452850][ T3633] ? down_write+0x1a5/0x270
[ 53.457352][ T3633] ? down_read_killable+0x80/0x80
[ 53.462379][ T3633] ? __up_read+0x690/0x690
[ 53.466796][ T3633] reiserfs_xattr_init+0x34b/0x730
[ 53.471912][ T3633] reiserfs_fill_super+0x20b5/0x24a0
[ 53.477210][ T3633] ? reiserfs_kill_sb+0x150/0x150
[ 53.482239][ T3633] ? snprintf+0xc0/0x110
[ 53.486506][ T3633] mount_bdev+0x26c/0x3a0
[ 53.490831][ T3633] ? reiserfs_kill_sb+0x150/0x150
[ 53.495854][ T3633] legacy_get_tree+0xea/0x180
[ 53.500525][ T3633] ? remove_save_link+0x4a0/0x4a0
[ 53.505547][ T3633] vfs_get_tree+0x88/0x270
[ 53.509965][ T3633] do_new_mount+0x289/0xad0
[ 53.514470][ T3633] ? do_move_mount_old+0x150/0x150
[ 53.519587][ T3633] ? user_path_at_empty+0x149/0x1a0
[ 53.524788][ T3633] __se_sys_mount+0x2d3/0x3c0
[ 53.529469][ T3633] ? __x64_sys_mount+0xc0/0xc0
[ 53.534230][ T3633] ? syscall_enter_from_user_mode+0x2e/0x1d0
[ 53.540210][ T3633] ? __x64_sys_mount+0x1c/0xc0
[ 53.544970][ T3633] do_syscall_64+0x3d/0xb0
[ 53.549383][ T3633] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 53.555268][ T3633] RIP: 0033:0x7f1e4f22eaea
[ 53.559681][ T3633] 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
[ 53.579284][ T3633] RSP: 002b:00007ffd129570a8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
[ 53.587691][ T3633] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1e4f22eaea
[ 53.595655][ T3633] RDX: 0000000020001100 RSI: 0000000020001140 RDI: 00007ffd129570c0
[ 53.603616][ T3633] RBP: 00007ffd129570c0 R08: 00007ffd12957100 R09: 00000000000010f4
[ 53.611576][ T3633] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004
[ 53.619538][ T3633] R13: 00005555572492c0 R14: 0000000000000000 R15: 00007ffd12957100
[ 53.627514][ T3633]
[ 53.630578][ T3633] Kernel Offset: disabled
[ 53.634962][ T3633] Rebooting in 86400 seconds..