./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1904576486
<...>
DUID 00:04:e3:38:52:80:67:3f:e9:c9:a2:47:22:a3:59:23:7d:1e
forked to background, child pid 3212
[ 29.483772][ T3213] 8021q: adding VLAN 0 to HW filter on device bond0
[ 29.498509][ T3213] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK
syzkaller
Warning: Permanently added '10.128.0.95' (ECDSA) to the list of known hosts.
execve("./syz-executor1904576486", ["./syz-executor1904576486"], 0x7ffc2e035ed0 /* 10 vars */) = 0
brk(NULL) = 0x5555562ee000
brk(0x5555562eec40) = 0x5555562eec40
arch_prctl(ARCH_SET_FS, 0x5555562ee300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor1904576486", 4096) = 28
brk(0x55555630fc40) = 0x55555630fc40
brk(0x555556310000) = 0x555556310000
mprotect(0x7f4708b61000, 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
ftruncate(3, 4194320) = 0
pwrite64(3, "\x8c\xb6\x37", 3, 1) = 3
pwrite64(3, "\x00\x84\x09", 3, 4) = 3
pwrite64(3, "\xcf\x58\xf9\xb6\xb0\x97\x28\x72\x18\xce\x56\xf2\x50\xb4\x26\xfd\x15\x34\xa8\x24\x13\x97\xcf\xab\x6d\x88\x16\xfa\x4b\xb4\x5c\x3f\x9f\xdd\xf8\x76\xb2\x69\xc1\xe8\x59\xce\xbe\x21\xb7\xd9\x24\x4b\x1f\xd8\xf4\x11\xc2\xe7\x5b\x40\x44\x0e\x6e\x93\x65\x6e\xcb\xb4\x9b\xee\xac\x1c\x75\x71\x47\x8c\xa3\xc9\x9e\xc9\x07\x4a\xeb\xad\xf4\x46\x2d\x55\x73\x8c\xec\xdf\x1a\xe2\x86\x2f\x84\x19\x26\xf1\x5b\x27\x70\x6d"..., 205, 7) = 205
pwrite64(3, "\x00\x04\x00\x00\xec\x01\x00\x00\x13\x02\x00\x00\x12\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x61\x1c\xad\x49\xe1\x00\x00\x00\x1e\x00\x00\x00\x00\x00\x00\x00\x00\x10\xcc\x03\x10\x00\x01\x00\x52\x65\x49\x73\x45\x72\x33\x46\x73\x00\x00\x00\x02\x00\x00\x00\x02\x00\x01\x00\x02\x00\x01\x02\x00\x00\x00\x00\x01\x00\x00\x00\x12\x31\x2a\x23\x12\x12\x33\x12\x33\x12\x31\x12\x34\x13\x41\x24"..., 128, 65536) = 128
pwrite64(3, "\x00\x00\x00\x00\x00\x00\x05\x00\x08\x00\x00\x00\x01\x10\x00\x00\x03\x10\x00\x48\xb2\x56\x07\x81\x8b\x96\xe2\x7e\xa5\x80\x19\x56\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x9e\x08", 45, 65728) = 45
pwrite64(3, "\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x12\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x61\x1c\xad\x49\xe1\x00\x00\x00\x1e\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\xf4\x50\x98\x12\x2a\x16\x2b\x00\x17\x31\xda\x04\x98\x0e\x00\x00\x66\xd9\xca\x9b\x08\x8f\x7a\xfe\xe7\x42\xa2\xaa\xc9\x3d\x10\x58\x68\xc7\x2e\xdb"..., 185, 2170880) = 185
pwrite64(3, "\x01\x00\x02\x00\x5c\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x2c\x00\xd4\x0f\x01\x00\x01\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x00\xf4\x01\x00\x00\x02\x00\x30\x00\xa4\x0f\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", 96, 2174976) = 96
pwrite64(3, "\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x02\x00\x00\x00\x28\x00\x04\x00\x02\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x20\x00\x04\x00\x2e\x2e\x00\x00\x00\x00\x00\x00\x2e\x00\xe2\xff\x00\x00\x00\x00\xed\x41\x00\x00\x03\x00\x00\x3a\xc1\x65\x5f\x3a\xc1\x65\x5f\x3a\xc1\x65\xea\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf3\xff", 82, 2178976) = 82
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
ioctl(4, LOOP_SET_FD, 3) = 0
mkdir("./file0", 0777) = 0
syzkaller login: [ 52.933965][ T3633] loop0: detected capacity change from 0 to 8192
[ 52.945573][ T3633] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 52.958700][ T3633] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal
[ 52.968471][ T3633] REISERFS (device loop0): using ordered data mode
[ 52.975210][ T3633] reiserfs: using flush barriers
mount("/dev/loop0", "./file0", "reiserfs", MS_NOSUID|MS_NOEXEC|MS_NOATIME|MS_RELATIME, "") = 0
openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 5
ioctl(4, LOOP_CLR_FD) = 0
close(4) = 0
close(3) = 0
open(NULL, O_RDONLY) = -1 EFAULT (Bad address)
[ 52.981331][ 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
[ 52.998076][ T3633] REISERFS (device loop0): checking transaction log (loop0)
[ 53.007650][ T3633] REISERFS (device loop0): Using rupasov hash to sort names
[ 53.016274][ T3633] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
sync() = 0
[ 53.227328][ T3633]
[ 53.229665][ T3633] ======================================================
[ 53.236662][ T3633] WARNING: possible circular locking dependency detected
[ 53.243652][ T3633] 6.1.0-rc5-syzkaller-00326-g77c51ba552a1 #0 Not tainted
[ 53.250644][ T3633] ------------------------------------------------------
[ 53.257635][ T3633] syz-executor190/3633 is trying to acquire lock:
[ 53.264020][ T3633] ffffc90003bd10f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x340/0x1070
[ 53.273745][ T3633]
[ 53.273745][ T3633] but task is already holding lock:
[ 53.281081][ T3633] ffff888025e9e460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0
[ 53.290291][ T3633]
[ 53.290291][ T3633] which lock already depends on the new lock.
[ 53.290291][ T3633]
[ 53.300698][ T3633]
[ 53.300698][ T3633] the existing dependency chain (in reverse order) is:
[ 53.309711][ T3633]
[ 53.309711][ T3633] -> #2 (sb_writers#9){.+.+}-{0:0}:
[ 53.317088][ T3633] lock_acquire+0x182/0x3c0
[ 53.322104][ T3633] sb_start_write+0x4d/0x1a0
[ 53.327205][ T3633] mnt_want_write_file+0x5a/0x1f0
[ 53.332747][ T3633] reiserfs_ioctl+0x16e/0x340
[ 53.337936][ T3633] __se_sys_ioctl+0xfb/0x170
[ 53.343048][ T3633] do_syscall_64+0x3d/0xb0
[ 53.348002][ T3633] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 53.354411][ T3633]
[ 53.354411][ T3633] -> #1 (&sbi->lock){+.+.}-{3:3}:
[ 53.361782][ T3633] lock_acquire+0x182/0x3c0
[ 53.366795][ T3633] __mutex_lock_common+0x1bd/0x26e0
[ 53.372504][ T3633] mutex_lock_nested+0x17/0x20
[ 53.377777][ T3633] reiserfs_write_lock_nested+0x5b/0xd0
[ 53.383834][ T3633] do_journal_begin_r+0x34b/0x1070
[ 53.389453][ T3633] journal_begin+0x14b/0x350
[ 53.394550][ T3633] reiserfs_fill_super+0x172b/0x24a0
[ 53.400345][ T3633] mount_bdev+0x26c/0x3a0
[ 53.405217][ T3633] legacy_get_tree+0xea/0x180
[ 53.410403][ T3633] vfs_get_tree+0x88/0x270
[ 53.415324][ T3633] do_new_mount+0x289/0xad0
[ 53.420331][ T3633] __se_sys_mount+0x2d3/0x3c0
[ 53.425516][ T3633] do_syscall_64+0x3d/0xb0
[ 53.430439][ T3633] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 53.436841][ T3633]
[ 53.436841][ T3633] -> #0 (&journal->j_mutex){+.+.}-{3:3}:
[ 53.444656][ T3633] validate_chain+0x1898/0x6ae0
[ 53.450019][ T3633] __lock_acquire+0x1292/0x1f60
[ 53.455376][ T3633] lock_acquire+0x182/0x3c0
[ 53.460386][ T3633] __mutex_lock_common+0x1bd/0x26e0
[ 53.466098][ T3633] mutex_lock_nested+0x17/0x20
[ 53.471379][ T3633] do_journal_begin_r+0x340/0x1070
[ 53.476996][ T3633] journal_begin+0x14b/0x350
[ 53.482123][ T3633] reiserfs_dirty_inode+0x108/0x230
[ 53.487838][ T3633] __mark_inode_dirty+0x1e7/0x600
[ 53.493375][ T3633] reiserfs_ioctl+0x293/0x340
[ 53.498559][ T3633] __se_sys_ioctl+0xfb/0x170
[ 53.503657][ T3633] do_syscall_64+0x3d/0xb0
[ 53.508590][ T3633] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 53.514994][ T3633]
[ 53.514994][ T3633] other info that might help us debug this:
[ 53.514994][ T3633]
[ 53.525206][ T3633] Chain exists of:
[ 53.525206][ T3633] &journal->j_mutex --> &sbi->lock --> sb_writers#9
[ 53.525206][ T3633]
[ 53.537710][ T3633] Possible unsafe locking scenario:
[ 53.537710][ T3633]
[ 53.545141][ T3633] CPU0 CPU1
[ 53.550491][ T3633] ---- ----
[ 53.555839][ T3633] lock(sb_writers#9);
[ 53.559986][ T3633] lock(&sbi->lock);
[ 53.566472][ T3633] lock(sb_writers#9);
[ 53.573138][ T3633] lock(&journal->j_mutex);
[ 53.577714][ T3633]
[ 53.577714][ T3633] *** DEADLOCK ***
[ 53.577714][ T3633]
[ 53.585856][ T3633] 1 lock held by syz-executor190/3633:
[ 53.591324][ T3633] #0: ffff888025e9e460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0
[ 53.600997][ T3633]
[ 53.600997][ T3633] stack backtrace:
[ 53.606869][ T3633] CPU: 1 PID: 3633 Comm: syz-executor190 Not tainted 6.1.0-rc5-syzkaller-00326-g77c51ba552a1 #0
[ 53.617268][ T3633] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 53.627306][ T3633] Call Trace:
[ 53.630576][ T3633] <TASK>
[ 53.633495][ T3633] dump_stack_lvl+0x1b1/0x28e
[ 53.638166][ T3633] ? nf_tcp_handle_invalid+0x62e/0x62e
[ 53.643620][ T3633] ? print_circular_bug+0x13e/0x1c0
[ 53.648809][ T3633] check_noncircular+0x2cc/0x390
[ 53.653736][ T3633] ? add_chain_block+0x850/0x850
[ 53.658664][ T3633] ? lockdep_lock+0x102/0x290
[ 53.663333][ T3633] ? _find_first_zero_bit+0xe8/0x110
[ 53.668609][ T3633] validate_chain+0x1898/0x6ae0
[ 53.673458][ T3633] ? reacquire_held_locks+0x650/0x650
[ 53.678827][ T3633] ? __kernel_text_address+0x9/0x40
[ 53.684016][ T3633] ? unwind_get_return_address+0x48/0x80
[ 53.689640][ T3633] ? arch_stack_walk+0x98/0xe0
[ 53.694397][ T3633] ? stack_trace_save+0x104/0x1e0
[ 53.699413][ T3633] ? stack_trace_snprint+0xf0/0xf0
[ 53.704513][ T3633] ? check_noncircular+0x1aa/0x390
[ 53.709614][ T3633] ? add_chain_block+0x850/0x850
[ 53.714547][ T3633] ? lockdep_unlock+0x144/0x2e0
[ 53.719382][ T3633] ? lockdep_lock+0x290/0x290
[ 53.724046][ T3633] ? add_lock_to_list+0x1c7/0x2d0
[ 53.729074][ T3633] ? validate_chain+0x1478/0x6ae0
[ 53.734103][ T3633] ? reacquire_held_locks+0x650/0x650
[ 53.739466][ T3633] ? lockdep_unlock+0x144/0x2e0
[ 53.744302][ T3633] ? lockdep_lock+0x290/0x290
[ 53.748970][ T3633] ? add_lock_to_list+0x1c7/0x2d0
[ 53.753984][ T3633] ? validate_chain+0x1478/0x6ae0
[ 53.759003][ T3633] ? reacquire_held_locks+0x650/0x650
[ 53.764362][ T3633] ? stack_trace_save+0x1e0/0x1e0
[ 53.769381][ T3633] ? stack_trace_save+0x1e0/0x1e0
[ 53.774392][ T3633] ? rcu_read_lock_sched_held+0x87/0x110
[ 53.780010][ T3633] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 53.785983][ T3633] ? rcu_lock_release+0x5/0x20
[ 53.790735][ T3633] ? trace_lock_release+0x95/0x220
[ 53.795835][ T3633] ? mark_lock+0x9a/0x350
[ 53.800163][ T3633] ? stack_trace_save+0x1e0/0x1e0
[ 53.805196][ T3633] ? rcu_read_lock_sched_held+0x87/0x110
[ 53.810835][ T3633] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 53.816814][ T3633] ? rcu_lock_release+0x5/0x20
[ 53.821585][ T3633] ? read_lock_is_recursive+0x10/0x10
[ 53.826945][ T3633] ? rcu_lock_release+0x5/0x20
[ 53.831716][ T3633] ? __lock_acquire+0x1f60/0x1f60
[ 53.836747][ T3633] ? deref_stack_reg+0x17a/0x210
[ 53.841685][ T3633] ? preempt_count_add+0x8d/0x180
[ 53.846708][ T3633] ? stack_trace_save+0x1e0/0x1e0
[ 53.851726][ T3633] ? is_bpf_text_address+0x253/0x270
[ 53.857009][ T3633] ? stack_trace_save+0x1e0/0x1e0
[ 53.862123][ T3633] ? stack_trace_save+0x1e0/0x1e0
[ 53.867139][ T3633] ? rcu_read_lock_sched_held+0x87/0x110
[ 53.872763][ T3633] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 53.878736][ T3633] ? rcu_lock_release+0x5/0x20
[ 53.883500][ T3633] ? read_lock_is_recursive+0x10/0x10
[ 53.888860][ T3633] ? rcu_lock_release+0x5/0x20
[ 53.893612][ T3633] ? __lock_acquire+0x1f60/0x1f60
[ 53.898624][ T3633] ? deref_stack_reg+0x17a/0x210
[ 53.903557][ T3633] ? stack_trace_save+0x1e0/0x1e0
[ 53.908574][ T3633] ? rcu_read_lock_sched_held+0x87/0x110
[ 53.914194][ T3633] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 53.920165][ T3633] ? rcu_lock_release+0x5/0x20
[ 53.924920][ T3633] ? read_lock_is_recursive+0x10/0x10
[ 53.930281][ T3633] ? rcu_lock_release+0x5/0x20
[ 53.935036][ T3633] ? __lock_acquire+0x1f60/0x1f60
[ 53.940138][ T3633] ? deref_stack_reg+0x17a/0x210
[ 53.945068][ T3633] ? mark_lock+0x9a/0x350
[ 53.949387][ T3633] ? __lock_acquire+0x1292/0x1f60
[ 53.954407][ T3633] ? mark_lock+0x9a/0x350
[ 53.958724][ T3633] __lock_acquire+0x1292/0x1f60
[ 53.963576][ T3633] lock_acquire+0x182/0x3c0
[ 53.968067][ T3633] ? do_journal_begin_r+0x340/0x1070
[ 53.973350][ T3633] ? read_lock_is_recursive+0x10/0x10
[ 53.978713][ T3633] ? __might_sleep+0xc0/0xc0
[ 53.983294][ T3633] ? reiserfs_write_unlock_nested+0xd0/0x120
[ 53.989264][ T3633] ? __lock_acquire+0x1f60/0x1f60
[ 53.994298][ T3633] __mutex_lock_common+0x1bd/0x26e0
[ 53.999518][ T3633] ? do_journal_begin_r+0x340/0x1070
[ 54.004814][ T3633] ? __mutex_unlock_slowpath+0x222/0x770
[ 54.010444][ T3633] ? do_journal_begin_r+0x340/0x1070
[ 54.015719][ T3633] ? mutex_unlock+0x10/0x10
[ 54.020213][ T3633] ? mutex_lock_io_nested+0x60/0x60
[ 54.025406][ T3633] mutex_lock_nested+0x17/0x20
[ 54.030161][ T3633] do_journal_begin_r+0x340/0x1070
[ 54.035268][ T3633] ? journal_join_abort+0xe0/0xe0
[ 54.040279][ T3633] ? print_irqtrace_events+0x220/0x220
[ 54.045730][ T3633] ? ktime_get_coarse_real_ts64+0x45/0x140
[ 54.051526][ T3633] ? lockdep_hardirqs_on+0x8d/0x130
[ 54.056724][ T3633] journal_begin+0x14b/0x350
[ 54.061306][ T3633] reiserfs_dirty_inode+0x108/0x230
[ 54.066498][ T3633] ? reiserfs_free_inode+0x20/0x20
[ 54.071602][ T3633] ? rcu_read_lock_sched_held+0x87/0x110
[ 54.077223][ T3633] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 54.083192][ T3633] ? current_time+0x1d7/0x300
[ 54.087859][ T3633] ? reiserfs_free_inode+0x20/0x20
[ 54.092961][ T3633] __mark_inode_dirty+0x1e7/0x600
[ 54.097977][ T3633] ? __might_fault+0xb2/0x110
[ 54.102640][ T3633] reiserfs_ioctl+0x293/0x340
[ 54.107308][ T3633] ? __se_sys_ioctl+0xf0/0x170
[ 54.112061][ T3633] ? reiserfs_unpack+0x390/0x390
[ 54.116986][ T3633] __se_sys_ioctl+0xfb/0x170
[ 54.121567][ T3633] do_syscall_64+0x3d/0xb0
[ 54.125971][ T3633] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 54.131853][ T3633] RIP: 0033:0x7f4708af5159
[ 54.136254][ T3633] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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
[ 54.155847][ T3633] RSP: 002b:00007ffcdd0a2418 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 54.164251][ T3633] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4708af5159
[ 54.172213][ T3633] RDX: 0000000020000080 RSI: 0000000040087602 RDI: 0000000000000005
ioctl(5, FS_IOC_SETVERSION, 0x20000080) = 0
exit_group(0) = ?
+++ exited with 0 +++
[ 54.180171][