./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor730464600
<...>
DUID 00:04:f8:32:f0:25:6b:f7:7b:d6:d2:5e:34:7f:1d:07:e3:4e
forked to background, child pid 3211
[ 29.359497][ T3212] 8021q: adding VLAN 0 to HW filter on device bond0
[ 29.368744][ T3212] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK
syzkaller
Warning: Permanently added '10.128.0.216' (ECDSA) to the list of known hosts.
execve("./syz-executor730464600", ["./syz-executor730464600"], 0x7ffc029b0e30 /* 10 vars */) = 0
brk(NULL) = 0x555556872000
brk(0x555556872c40) = 0x555556872c40
arch_prctl(ARCH_SET_FS, 0x555556872300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor730464600", 4096) = 27
brk(0x555556893c40) = 0x555556893c40
brk(0x555556894000) = 0x555556894000
mprotect(0x7f1f17589000, 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: [ 54.867224][ T3633] loop0: detected capacity change from 0 to 8192
[ 54.877736][ T3633] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 54.890772][ T3633] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal
[ 54.900316][ T3633] REISERFS (device loop0): using ordered data mode
[ 54.906948][ 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(".", O_RDONLY) = 3
[ 54.913051][ 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
[ 54.929455][ T3633] REISERFS (device loop0): checking transaction log (loop0)
[ 54.938545][ T3633] REISERFS (device loop0): Using rupasov hash to sort names
[ 54.947231][ T3633] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[ 54.959506][ T3633]
[ 54.961845][ T3633] ======================================================
[ 54.968858][ T3633] WARNING: possible circular locking dependency detected
[ 54.975873][ T3633] 6.1.0-rc5-syzkaller-00241-gab290eaddc4c #0 Not tainted
[ 54.982884][ T3633] ------------------------------------------------------
[ 54.989878][ T3633] syz-executor730/3633 is trying to acquire lock:
[ 54.996264][ T3633] ffffc90003c910f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x340/0x1070
[ 55.005986][ T3633]
[ 55.005986][ T3633] but task is already holding lock:
[ 55.013327][ T3633] ffff88807bd86460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0
[ 55.022524][ T3633]
[ 55.022524][ T3633] which lock already depends on the new lock.
[ 55.022524][ T3633]
[ 55.032905][ T3633]
[ 55.032905][ T3633] the existing dependency chain (in reverse order) is:
[ 55.041891][ T3633]
[ 55.041891][ T3633] -> #2 (sb_writers#9){.+.+}-{0:0}:
[ 55.049249][ T3633] lock_acquire+0x182/0x3c0
[ 55.054253][ T3633] sb_start_write+0x4d/0x1a0
[ 55.059460][ T3633] mnt_want_write_file+0x5a/0x1f0
[ 55.064990][ T3633] reiserfs_ioctl+0x16e/0x340
[ 55.070178][ T3633] __se_sys_ioctl+0xfb/0x170
[ 55.075279][ T3633] do_syscall_64+0x3d/0xb0
[ 55.080217][ T3633] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 55.086621][ T3633]
[ 55.086621][ T3633] -> #1 (&sbi->lock){+.+.}-{3:3}:
[ 55.093816][ T3633] lock_acquire+0x182/0x3c0
[ 55.098829][ T3633] __mutex_lock_common+0x1bd/0x26e0
[ 55.104539][ T3633] mutex_lock_nested+0x17/0x20
[ 55.109815][ T3633] reiserfs_write_lock_nested+0x5b/0xd0
[ 55.115870][ T3633] do_journal_begin_r+0x34b/0x1070
[ 55.121489][ T3633] journal_begin+0x14b/0x350
[ 55.126585][ T3633] reiserfs_fill_super+0x172b/0x24a0
[ 55.132379][ T3633] mount_bdev+0x26c/0x3a0
[ 55.137215][ T3633] legacy_get_tree+0xea/0x180
[ 55.142400][ T3633] vfs_get_tree+0x88/0x270
[ 55.147322][ T3633] do_new_mount+0x289/0xad0
[ 55.152330][ T3633] __se_sys_mount+0x2d3/0x3c0
[ 55.157512][ T3633] do_syscall_64+0x3d/0xb0
[ 55.162436][ T3633] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 55.168835][ T3633]
[ 55.168835][ T3633] -> #0 (&journal->j_mutex){+.+.}-{3:3}:
[ 55.176636][ T3633] validate_chain+0x1898/0x6ae0
[ 55.181996][ T3633] __lock_acquire+0x1292/0x1f60
[ 55.187358][ T3633] lock_acquire+0x182/0x3c0
[ 55.192369][ T3633] __mutex_lock_common+0x1bd/0x26e0
[ 55.198080][ T3633] mutex_lock_nested+0x17/0x20
[ 55.203358][ T3633] do_journal_begin_r+0x340/0x1070
[ 55.208974][ T3633] journal_begin+0x14b/0x350
[ 55.214071][ T3633] reiserfs_dirty_inode+0x108/0x230
[ 55.219779][ T3633] __mark_inode_dirty+0x1e7/0x600
[ 55.225314][ T3633] reiserfs_ioctl+0x293/0x340
[ 55.230499][ T3633] __se_sys_ioctl+0xfb/0x170
[ 55.235599][ T3633] do_syscall_64+0x3d/0xb0
[ 55.240531][ T3633] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 55.246946][ T3633]
[ 55.246946][ T3633] other info that might help us debug this:
[ 55.246946][ T3633]
[ 55.257159][ T3633] Chain exists of:
[ 55.257159][ T3633] &journal->j_mutex --> &sbi->lock --> sb_writers#9
[ 55.257159][ T3633]
[ 55.269668][ T3633] Possible unsafe locking scenario:
[ 55.269668][ T3633]
[ 55.277105][ T3633] CPU0 CPU1
[ 55.282458][ T3633] ---- ----
[ 55.287811][ T3633] lock(sb_writers#9);
[ 55.291963][ T3633] lock(&sbi->lock);
[ 55.298453][ T3633] lock(sb_writers#9);
[ 55.305122][ T3633] lock(&journal->j_mutex);
[ 55.309698][ T3633]
[ 55.309698][ T3633] *** DEADLOCK ***
[ 55.309698][ T3633]
[ 55.317824][ T3633] 1 lock held by syz-executor730/3633:
[ 55.323265][ T3633] #0: ffff88807bd86460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0
[ 55.332917][ T3633]
[ 55.332917][ T3633] stack backtrace:
[ 55.338798][ T3633] CPU: 0 PID: 3633 Comm: syz-executor730 Not tainted 6.1.0-rc5-syzkaller-00241-gab290eaddc4c #0
[ 55.349192][ T3633] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 55.359242][ T3633] Call Trace:
[ 55.362512][ T3633] <TASK>
[ 55.365442][ T3633] dump_stack_lvl+0x1b1/0x28e
[ 55.370114][ T3633] ? nf_tcp_handle_invalid+0x62e/0x62e
[ 55.375569][ T3633] ? print_circular_bug+0x13e/0x1c0
[ 55.380760][ T3633] check_noncircular+0x2cc/0x390
[ 55.385690][ T3633] ? add_chain_block+0x850/0x850
[ 55.390620][ T3633] ? lockdep_lock+0x102/0x290
[ 55.395290][ T3633] ? _find_first_zero_bit+0xe8/0x110
[ 55.400570][ T3633] validate_chain+0x1898/0x6ae0
[ 55.405420][ T3633] ? reacquire_held_locks+0x650/0x650
[ 55.410783][ T3633] ? __kernel_text_address+0x9/0x40
[ 55.415980][ T3633] ? unwind_get_return_address+0x48/0x80
[ 55.421610][ T3633] ? arch_stack_walk+0x98/0xe0
[ 55.426371][ T3633] ? stack_trace_save+0x104/0x1e0
[ 55.431389][ T3633] ? stack_trace_snprint+0xf0/0xf0
[ 55.436491][ T3633] ? check_noncircular+0x1aa/0x390
[ 55.441600][ T3633] ? add_chain_block+0x850/0x850
[ 55.446533][ T3633] ? lockdep_unlock+0x144/0x2e0
[ 55.451372][ T3633] ? lockdep_lock+0x290/0x290
[ 55.456037][ T3633] ? add_lock_to_list+0x1c7/0x2d0
[ 55.461086][ T3633] ? validate_chain+0x1478/0x6ae0
[ 55.466105][ T3633] ? reacquire_held_locks+0x650/0x650
[ 55.471466][ T3633] ? lockdep_unlock+0x144/0x2e0
[ 55.476303][ T3633] ? lockdep_lock+0x290/0x290
[ 55.480966][ T3633] ? add_lock_to_list+0x1c7/0x2d0
[ 55.485982][ T3633] ? validate_chain+0x1478/0x6ae0
[ 55.491005][ T3633] ? reacquire_held_locks+0x650/0x650
[ 55.496383][ T3633] ? rcu_read_lock_sched_held+0x87/0x110
[ 55.502015][ T3633] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 55.507997][ T3633] ? __stack_depot_save+0x41c/0x4a0
[ 55.513199][ T3633] ? trace_lock_release+0x95/0x220
[ 55.518310][ T3633] ? stack_trace_save+0x1e0/0x1e0
[ 55.523329][ T3633] ? rcu_read_lock_sched_held+0x87/0x110
[ 55.528956][ T3633] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 55.534937][ T3633] ? stack_trace_save+0x1e0/0x1e0
[ 55.539958][ T3633] ? rcu_read_lock_sched_held+0x87/0x110
[ 55.545583][ T3633] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 55.551557][ T3633] ? rcu_lock_release+0x5/0x20
[ 55.556318][ T3633] ? read_lock_is_recursive+0x10/0x10
[ 55.561687][ T3633] ? rcu_lock_release+0x5/0x20
[ 55.566441][ T3633] ? __lock_acquire+0x1f60/0x1f60
[ 55.571454][ T3633] ? deref_stack_reg+0x17a/0x210
[ 55.576383][ T3633] ? preempt_count_add+0x8d/0x180
[ 55.581401][ T3633] ? stack_trace_save+0x1e0/0x1e0
[ 55.586425][ T3633] ? is_bpf_text_address+0x253/0x270
[ 55.591696][ T3633] ? stack_trace_save+0x1e0/0x1e0
[ 55.596714][ T3633] ? stack_trace_save+0x1e0/0x1e0
[ 55.601728][ T3633] ? rcu_read_lock_sched_held+0x87/0x110
[ 55.607349][ T3633] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 55.613320][ T3633] ? rcu_lock_release+0x5/0x20
[ 55.618077][ T3633] ? read_lock_is_recursive+0x10/0x10
[ 55.623438][ T3633] ? rcu_lock_release+0x5/0x20
[ 55.628190][ T3633] ? __lock_acquire+0x1f60/0x1f60
[ 55.633202][ T3633] ? deref_stack_reg+0x17a/0x210
[ 55.638133][ T3633] ? stack_trace_save+0x1e0/0x1e0
[ 55.643145][ T3633] ? rcu_read_lock_sched_held+0x87/0x110
[ 55.648768][ T3633] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 55.654740][ T3633] ? rcu_lock_release+0x5/0x20
[ 55.659501][ T3633] ? read_lock_is_recursive+0x10/0x10
[ 55.664917][ T3633] ? rcu_lock_release+0x5/0x20
[ 55.669670][ T3633] ? __lock_acquire+0x1f60/0x1f60
[ 55.674683][ T3633] ? deref_stack_reg+0x17a/0x210
[ 55.679611][ T3633] ? mark_lock+0x9a/0x350
[ 55.683929][ T3633] ? __lock_acquire+0x1292/0x1f60
[ 55.688945][ T3633] ? mark_lock+0x9a/0x350
[ 55.693292][ T3633] __lock_acquire+0x1292/0x1f60
[ 55.698138][ T3633] lock_acquire+0x182/0x3c0
[ 55.702628][ T3633] ? do_journal_begin_r+0x340/0x1070
[ 55.707904][ T3633] ? read_lock_is_recursive+0x10/0x10
[ 55.713266][ T3633] ? __might_sleep+0xc0/0xc0
[ 55.717846][ T3633] ? reiserfs_write_unlock_nested+0xd0/0x120
[ 55.723816][ T3633] ? __lock_acquire+0x1f60/0x1f60
[ 55.728830][ T3633] __mutex_lock_common+0x1bd/0x26e0
[ 55.734029][ T3633] ? do_journal_begin_r+0x340/0x1070
[ 55.739304][ T3633] ? __mutex_unlock_slowpath+0x222/0x770
[ 55.744927][ T3633] ? do_journal_begin_r+0x340/0x1070
[ 55.750200][ T3633] ? mutex_unlock+0x10/0x10
[ 55.754694][ T3633] ? mutex_lock_io_nested+0x60/0x60
[ 55.759890][ T3633] mutex_lock_nested+0x17/0x20
[ 55.764644][ T3633] do_journal_begin_r+0x340/0x1070
[ 55.769750][ T3633] ? journal_join_abort+0xe0/0xe0
[ 55.774762][ T3633] ? print_irqtrace_events+0x220/0x220
[ 55.780210][ T3633] ? ktime_get_coarse_real_ts64+0x45/0x140
[ 55.786009][ T3633] ? lockdep_hardirqs_on+0x8d/0x130
[ 55.791200][ T3633] journal_begin+0x14b/0x350
[ 55.795778][ T3633] reiserfs_dirty_inode+0x108/0x230
[ 55.800969][ T3633] ? reiserfs_free_inode+0x20/0x20
[ 55.806073][ T3633] ? rcu_read_lock_sched_held+0x87/0x110
[ 55.811699][ T3633] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 55.817666][ T3633] ? current_time+0x1d7/0x300
[ 55.822334][ T3633] ? reiserfs_free_inode+0x20/0x20
[ 55.827436][ T3633] __mark_inode_dirty+0x1e7/0x600
[ 55.832452][ T3633] ? __might_fault+0xb2/0x110
[ 55.837115][ T3633] reiserfs_ioctl+0x293/0x340
[ 55.841780][ T3633] ? __se_sys_ioctl+0xf0/0x170
[ 55.846535][ T3633] ? reiserfs_unpack+0x390/0x390
[ 55.851462][ T3633] __se_sys_ioctl+0xfb/0x170
[ 55.856044][ T3633] do_syscall_64+0x3d/0xb0
[ 55.860450][ T3633] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 55.866338][ T3633] RIP: 0033:0x7f1f1751d159
[ 55.870743][ 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
[ 55.890336][ T3633] RSP: 002b:00007fff0db46c98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 55.898735][ T3633] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1f1751d159
[ 55.906694][ T3633] RDX: 0000000020000080 RSI: 0000000040087602 RDI: 0000000000000005
ioctl(5, FS_IOC_SETVERSION, 0x20000080) = 0
exit_group(0) = ?
+++ exited with 0 +++
[ 55.914651][ T3633] RBP: 00007f1f174dc950 R08: 0000000000000000 R09: 00000000000