./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor14735104
<...>
forked to background, child pid 3186
no interfaces have a carrier
[ 25.949047][ T3187] 8021q: adding VLAN 0 to HW filter on device bond0
[ 25.959027][ T3187] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK
syzkaller
Warning: Permanently added '10.128.1.117' (ECDSA) to the list of known hosts.
execve("./syz-executor14735104", ["./syz-executor14735104"], 0x7ffd99985490 /* 10 vars */) = 0
brk(NULL) = 0x555557164000
brk(0x555557164c40) = 0x555557164c40
arch_prctl(ARCH_SET_FS, 0x555557164300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor14735104", 4096) = 26
brk(0x555557185c40) = 0x555557185c40
brk(0x555557186000) = 0x555557186000
mprotect(0x7f8e55089000, 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: [ 43.680856][ T3608] loop0: detected capacity change from 0 to 8192
[ 43.692187][ T3608] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 43.705233][ T3608] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal
[ 43.714860][ T3608] REISERFS (device loop0): using ordered data mode
[ 43.721480][ T3608] 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
[ 43.727704][ T3608] 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
[ 43.744359][ T3608] REISERFS (device loop0): checking transaction log (loop0)
[ 43.753927][ T3608] REISERFS (device loop0): Using rupasov hash to sort names
[ 43.761936][ T3608] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
sync() = 0
[ 43.964026][ T3608]
[ 43.966449][ T3608] ======================================================
[ 43.973440][ T3608] WARNING: possible circular locking dependency detected
[ 43.980432][ T3608] 6.1.0-rc4-syzkaller-00011-g59f2f4b8a757 #0 Not tainted
[ 43.987423][ T3608] ------------------------------------------------------
[ 43.994412][ T3608] syz-executor147/3608 is trying to acquire lock:
[ 44.000796][ T3608] ffffc90003d410f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x340/0x1070
[ 44.010520][ T3608]
[ 44.010520][ T3608] but task is already holding lock:
[ 44.017856][ T3608] ffff888025202460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0
[ 44.027044][ T3608]
[ 44.027044][ T3608] which lock already depends on the new lock.
[ 44.027044][ T3608]
[ 44.037421][ T3608]
[ 44.037421][ T3608] the existing dependency chain (in reverse order) is:
[ 44.046405][ T3608]
[ 44.046405][ T3608] -> #2 (sb_writers#9){.+.+}-{0:0}:
[ 44.053762][ T3608] lock_acquire+0x182/0x3c0
[ 44.058764][ T3608] sb_start_write+0x4d/0x1a0
[ 44.063853][ T3608] mnt_want_write_file+0x5a/0x1f0
[ 44.069374][ T3608] reiserfs_ioctl+0x16e/0x340
[ 44.074551][ T3608] __se_sys_ioctl+0xfb/0x170
[ 44.079687][ T3608] do_syscall_64+0x3d/0xb0
[ 44.084612][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 44.091001][ T3608]
[ 44.091001][ T3608] -> #1 (&sbi->lock){+.+.}-{3:3}:
[ 44.098203][ T3608] lock_acquire+0x182/0x3c0
[ 44.103205][ T3608] __mutex_lock_common+0x1bd/0x26e0
[ 44.108897][ T3608] mutex_lock_nested+0x17/0x20
[ 44.114157][ T3608] reiserfs_write_lock_nested+0x5b/0xd0
[ 44.120201][ T3608] do_journal_begin_r+0x34b/0x1070
[ 44.125981][ T3608] journal_begin+0x14b/0x350
[ 44.131067][ T3608] reiserfs_fill_super+0x172b/0x24a0
[ 44.136851][ T3608] mount_bdev+0x26c/0x3a0
[ 44.141679][ T3608] legacy_get_tree+0xea/0x180
[ 44.146856][ T3608] vfs_get_tree+0x88/0x270
[ 44.151770][ T3608] do_new_mount+0x289/0xad0
[ 44.156771][ T3608] __se_sys_mount+0x2d3/0x3c0
[ 44.161946][ T3608] do_syscall_64+0x3d/0xb0
[ 44.166864][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 44.173256][ T3608]
[ 44.173256][ T3608] -> #0 (&journal->j_mutex){+.+.}-{3:3}:
[ 44.181044][ T3608] validate_chain+0x1898/0x6ae0
[ 44.186395][ T3608] __lock_acquire+0x1292/0x1f60
[ 44.191743][ T3608] lock_acquire+0x182/0x3c0
[ 44.196743][ T3608] __mutex_lock_common+0x1bd/0x26e0
[ 44.202437][ T3608] mutex_lock_nested+0x17/0x20
[ 44.207697][ T3608] do_journal_begin_r+0x340/0x1070
[ 44.213305][ T3608] journal_begin+0x14b/0x350
[ 44.218395][ T3608] reiserfs_dirty_inode+0x108/0x230
[ 44.224093][ T3608] __mark_inode_dirty+0x1e7/0x600
[ 44.229617][ T3608] reiserfs_ioctl+0x293/0x340
[ 44.234791][ T3608] __se_sys_ioctl+0xfb/0x170
[ 44.239900][ T3608] do_syscall_64+0x3d/0xb0
[ 44.244814][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 44.251208][ T3608]
[ 44.251208][ T3608] other info that might help us debug this:
[ 44.251208][ T3608]
[ 44.261413][ T3608] Chain exists of:
[ 44.261413][ T3608] &journal->j_mutex --> &sbi->lock --> sb_writers#9
[ 44.261413][ T3608]
[ 44.273896][ T3608] Possible unsafe locking scenario:
[ 44.273896][ T3608]
[ 44.281322][ T3608] CPU0 CPU1
[ 44.286664][ T3608] ---- ----
[ 44.292005][ T3608] lock(sb_writers#9);
[ 44.296142][ T3608] lock(&sbi->lock);
[ 44.302619][ T3608] lock(sb_writers#9);
[ 44.309270][ T3608] lock(&journal->j_mutex);
[ 44.313835][ T3608]
[ 44.313835][ T3608] *** DEADLOCK ***
[ 44.313835][ T3608]
[ 44.321956][ T3608] 1 lock held by syz-executor147/3608:
[ 44.327384][ T3608] #0: ffff888025202460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0
[ 44.337011][ T3608]
[ 44.337011][ T3608] stack backtrace:
[ 44.342874][ T3608] CPU: 1 PID: 3608 Comm: syz-executor147 Not tainted 6.1.0-rc4-syzkaller-00011-g59f2f4b8a757 #0
[ 44.353256][ T3608] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 44.363287][ T3608] Call Trace:
[ 44.366547][ T3608] <TASK>
[ 44.369459][ T3608] dump_stack_lvl+0x1b1/0x28e
[ 44.374121][ T3608] ? nf_tcp_handle_invalid+0x62e/0x62e
[ 44.379559][ T3608] ? print_circular_bug+0x13e/0x1c0
[ 44.384743][ T3608] check_noncircular+0x2cc/0x390
[ 44.389660][ T3608] ? add_chain_block+0x850/0x850
[ 44.394577][ T3608] ? lockdep_lock+0x102/0x290
[ 44.399234][ T3608] ? _find_first_zero_bit+0xe8/0x110
[ 44.404497][ T3608] validate_chain+0x1898/0x6ae0
[ 44.409334][ T3608] ? reacquire_held_locks+0x650/0x650
[ 44.414684][ T3608] ? __kernel_text_address+0x9/0x40
[ 44.419857][ T3608] ? unwind_get_return_address+0x48/0x80
[ 44.425466][ T3608] ? arch_stack_walk+0x98/0xe0
[ 44.430209][ T3608] ? stack_trace_save+0x104/0x1e0
[ 44.435218][ T3608] ? stack_trace_snprint+0xf0/0xf0
[ 44.440314][ T3608] ? check_noncircular+0x1aa/0x390
[ 44.445407][ T3608] ? add_chain_block+0x850/0x850
[ 44.450326][ T3608] ? lockdep_unlock+0x144/0x2e0
[ 44.455152][ T3608] ? lockdep_lock+0x290/0x290
[ 44.459805][ T3608] ? add_lock_to_list+0x1c7/0x2d0
[ 44.464812][ T3608] ? validate_chain+0x1478/0x6ae0
[ 44.469819][ T3608] ? reacquire_held_locks+0x650/0x650
[ 44.475168][ T3608] ? lockdep_unlock+0x144/0x2e0
[ 44.480000][ T3608] ? lockdep_lock+0x290/0x290
[ 44.484653][ T3608] ? add_lock_to_list+0x1c7/0x2d0
[ 44.489657][ T3608] ? validate_chain+0x1478/0x6ae0
[ 44.494670][ T3608] ? reacquire_held_locks+0x650/0x650
[ 44.500021][ T3608] ? stack_trace_save+0x1e0/0x1e0
[ 44.505065][ T3608] ? stack_trace_save+0x1e0/0x1e0
[ 44.510069][ T3608] ? rcu_read_lock_sched_held+0x87/0x110
[ 44.515682][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 44.521644][ T3608] ? rcu_read_lock_sched_held+0x87/0x110
[ 44.527254][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 44.533235][ T3608] ? stack_trace_save+0x1e0/0x1e0
[ 44.538241][ T3608] ? rcu_read_lock_sched_held+0x87/0x110
[ 44.543851][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 44.549809][ T3608] ? rcu_lock_release+0x5/0x20
[ 44.554557][ T3608] ? read_lock_is_recursive+0x10/0x10
[ 44.559910][ T3608] ? rcu_lock_release+0x5/0x20
[ 44.564654][ T3608] ? __lock_acquire+0x1f60/0x1f60
[ 44.569659][ T3608] ? deref_stack_reg+0x17a/0x210
[ 44.574577][ T3608] ? preempt_count_add+0x8d/0x180
[ 44.579581][ T3608] ? stack_trace_save+0x1e0/0x1e0
[ 44.584584][ T3608] ? is_bpf_text_address+0x253/0x270
[ 44.589848][ T3608] ? stack_trace_save+0x1e0/0x1e0
[ 44.594855][ T3608] ? stack_trace_save+0x1e0/0x1e0
[ 44.599859][ T3608] ? rcu_read_lock_sched_held+0x87/0x110
[ 44.605472][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 44.611431][ T3608] ? rcu_lock_release+0x5/0x20
[ 44.616177][ T3608] ? read_lock_is_recursive+0x10/0x10
[ 44.621525][ T3608] ? rcu_lock_release+0x5/0x20
[ 44.626269][ T3608] ? __lock_acquire+0x1f60/0x1f60
[ 44.631275][ T3608] ? deref_stack_reg+0x17a/0x210
[ 44.636198][ T3608] ? stack_trace_save+0x1e0/0x1e0
[ 44.641200][ T3608] ? rcu_read_lock_sched_held+0x87/0x110
[ 44.646810][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 44.652768][ T3608] ? rcu_lock_release+0x5/0x20
[ 44.657515][ T3608] ? read_lock_is_recursive+0x10/0x10
[ 44.662870][ T3608] ? rcu_lock_release+0x5/0x20
[ 44.667615][ T3608] ? __lock_acquire+0x1f60/0x1f60
[ 44.672622][ T3608] ? deref_stack_reg+0x17a/0x210
[ 44.677541][ T3608] ? mark_lock+0x9a/0x350
[ 44.681849][ T3608] ? __lock_acquire+0x1292/0x1f60
[ 44.686855][ T3608] ? mark_lock+0x9a/0x350
[ 44.691164][ T3608] __lock_acquire+0x1292/0x1f60
[ 44.695997][ T3608] lock_acquire+0x182/0x3c0
[ 44.700479][ T3608] ? do_journal_begin_r+0x340/0x1070
[ 44.705744][ T3608] ? read_lock_is_recursive+0x10/0x10
[ 44.711094][ T3608] ? __might_sleep+0xc0/0xc0
[ 44.715663][ T3608] ? reiserfs_write_unlock_nested+0xd0/0x120
[ 44.721623][ T3608] ? __lock_acquire+0x1f60/0x1f60
[ 44.726629][ T3608] __mutex_lock_common+0x1bd/0x26e0
[ 44.731804][ T3608] ? do_journal_begin_r+0x340/0x1070
[ 44.737087][ T3608] ? __mutex_unlock_slowpath+0x222/0x770
[ 44.742698][ T3608] ? do_journal_begin_r+0x340/0x1070
[ 44.747959][ T3608] ? mutex_unlock+0x10/0x10
[ 44.752437][ T3608] ? mutex_lock_io_nested+0x60/0x60
[ 44.757636][ T3608] mutex_lock_nested+0x17/0x20
[ 44.762376][ T3608] do_journal_begin_r+0x340/0x1070
[ 44.767468][ T3608] ? journal_join_abort+0xe0/0xe0
[ 44.772470][ T3608] ? print_irqtrace_events+0x220/0x220
[ 44.777908][ T3608] ? ktime_get_coarse_real_ts64+0x45/0x140
[ 44.783691][ T3608] ? lockdep_hardirqs_on+0x8d/0x130
[ 44.788872][ T3608] journal_begin+0x14b/0x350
[ 44.793443][ T3608] reiserfs_dirty_inode+0x108/0x230
[ 44.798726][ T3608] ? reiserfs_free_inode+0x20/0x20
[ 44.803819][ T3608] ? rcu_read_lock_sched_held+0x87/0x110
[ 44.809434][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 44.815401][ T3608] ? current_time+0x1d7/0x300
[ 44.820058][ T3608] ? reiserfs_free_inode+0x20/0x20
[ 44.825151][ T3608] __mark_inode_dirty+0x1e7/0x600
[ 44.830159][ T3608] ? __might_fault+0xb2/0x110
[ 44.834816][ T3608] reiserfs_ioctl+0x293/0x340
[ 44.839475][ T3608] ? __se_sys_ioctl+0xf0/0x170
[ 44.844220][ T3608] ? reiserfs_unpack+0x390/0x390
[ 44.849135][ T3608] __se_sys_ioctl+0xfb/0x170
[ 44.853706][ T3608] do_syscall_64+0x3d/0xb0
[ 44.858102][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 44.863973][ T3608] RIP: 0033:0x7f8e5501d149
[ 44.868369][ T3608] 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
[ 44.887954][ T3608] RSP: 002b:00007ffd9da68b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 44.896357][ T3608] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8e5501d149
[ 44.904309][ T3608] RDX: 0000000020000080 RSI: 0000000040087602 RDI: 0000000000000005
ioctl(5, FS_IOC_SETVERSION, 0x20000080) = 0
exit_group(0) = ?
+++ exited with 0 +++
[ 44.912260][ T3608] RBP: 00007f8e54fdc940 R08: 0000000000000000