./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3801781766 <...> DUID 00:04:f8:32:f0:25:6b:f7:7b:d6:d2:5e:34:7f:1d:07:e3:4e forked to background, child pid 3187 [ 27.236704][ T3188] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.246412][ T3188] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.132' (ECDSA) to the list of known hosts. execve("./syz-executor3801781766", ["./syz-executor3801781766"], 0x7fff693719d0 /* 10 vars */) = 0 brk(NULL) = 0x5555568b2000 brk(0x5555568b2c40) = 0x5555568b2c40 arch_prctl(ARCH_SET_FS, 0x5555568b2300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3801781766", 4096) = 28 brk(0x5555568d3c40) = 0x5555568d3c40 brk(0x5555568d4000) = 0x5555568d4000 mprotect(0x7f9efd855000, 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: [ 48.693293][ T3608] loop0: detected capacity change from 0 to 8192 [ 48.705179][ T3608] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 48.718362][ T3608] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 48.727586][ T3608] REISERFS (device loop0): using ordered data mode [ 48.734138][ 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 ioctl(-1, _IOC(_IOC_WRITE, 0x66, 0x8, 0x28), 0) = -1 EBADF (Bad file descriptor) [ 48.740186][ 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 [ 48.756772][ T3608] REISERFS (device loop0): checking transaction log (loop0) [ 48.765740][ T3608] REISERFS (device loop0): Using rupasov hash to sort names [ 48.774052][ T3608] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 48.789372][ T3608] [ 48.791718][ T3608] ====================================================== [ 48.798735][ T3608] WARNING: possible circular locking dependency detected [ 48.805752][ T3608] 6.1.0-rc3-syzkaller-00280-g64c3dd0b98f5 #0 Not tainted [ 48.812764][ T3608] ------------------------------------------------------ [ 48.819761][ T3608] syz-executor380/3608 is trying to acquire lock: [ 48.826153][ T3608] ffffc90003c110f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x340/0x1070 [ 48.835889][ T3608] [ 48.835889][ T3608] but task is already holding lock: [ 48.843232][ T3608] ffff888023d8a460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 48.852449][ T3608] [ 48.852449][ T3608] which lock already depends on the new lock. [ 48.852449][ T3608] [ 48.862831][ T3608] [ 48.862831][ T3608] the existing dependency chain (in reverse order) is: [ 48.871822][ T3608] [ 48.871822][ T3608] -> #2 (sb_writers#9){.+.+}-{0:0}: [ 48.879190][ T3608] lock_acquire+0x182/0x3c0 [ 48.884207][ T3608] sb_start_write+0x4d/0x1a0 [ 48.889301][ T3608] mnt_want_write_file+0x5a/0x1f0 [ 48.894829][ T3608] reiserfs_ioctl+0x16e/0x340 [ 48.900021][ T3608] __se_sys_ioctl+0xfb/0x170 [ 48.905121][ T3608] do_syscall_64+0x3d/0xb0 [ 48.910053][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 48.916452][ T3608] [ 48.916452][ T3608] -> #1 (&sbi->lock){+.+.}-{3:3}: [ 48.923640][ T3608] lock_acquire+0x182/0x3c0 [ 48.928653][ T3608] __mutex_lock_common+0x1bd/0x26e0 [ 48.935313][ T3608] mutex_lock_nested+0x17/0x20 [ 48.940580][ T3608] reiserfs_write_lock_nested+0x5b/0xd0 [ 48.946641][ T3608] do_journal_begin_r+0x34b/0x1070 [ 48.952263][ T3608] journal_begin+0x14b/0x350 [ 48.957359][ T3608] reiserfs_fill_super+0x172b/0x24a0 [ 48.963149][ T3608] mount_bdev+0x26c/0x3a0 [ 48.967983][ T3608] legacy_get_tree+0xea/0x180 [ 48.973169][ T3608] vfs_get_tree+0x88/0x270 [ 48.978092][ T3608] do_new_mount+0x289/0xad0 [ 48.983100][ T3608] __se_sys_mount+0x2d3/0x3c0 [ 48.988284][ T3608] do_syscall_64+0x3d/0xb0 [ 48.993211][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 48.999612][ T3608] [ 48.999612][ T3608] -> #0 (&journal->j_mutex){+.+.}-{3:3}: [ 49.007410][ T3608] validate_chain+0x1898/0x6ae0 [ 49.012770][ T3608] __lock_acquire+0x1292/0x1f60 [ 49.018131][ T3608] lock_acquire+0x182/0x3c0 [ 49.023141][ T3608] __mutex_lock_common+0x1bd/0x26e0 [ 49.028841][ T3608] mutex_lock_nested+0x17/0x20 [ 49.034109][ T3608] do_journal_begin_r+0x340/0x1070 [ 49.039728][ T3608] journal_begin+0x14b/0x350 [ 49.044825][ T3608] reiserfs_dirty_inode+0x108/0x230 [ 49.050537][ T3608] __mark_inode_dirty+0x1e7/0x600 [ 49.056069][ T3608] reiserfs_ioctl+0x293/0x340 [ 49.061253][ T3608] __se_sys_ioctl+0xfb/0x170 [ 49.066369][ T3608] do_syscall_64+0x3d/0xb0 [ 49.071292][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 49.077694][ T3608] [ 49.077694][ T3608] other info that might help us debug this: [ 49.077694][ T3608] [ 49.087907][ T3608] Chain exists of: [ 49.087907][ T3608] &journal->j_mutex --> &sbi->lock --> sb_writers#9 [ 49.087907][ T3608] [ 49.100414][ T3608] Possible unsafe locking scenario: [ 49.100414][ T3608] [ 49.107951][ T3608] CPU0 CPU1 [ 49.113301][ T3608] ---- ---- [ 49.118646][ T3608] lock(sb_writers#9); [ 49.122790][ T3608] lock(&sbi->lock); [ 49.129293][ T3608] lock(sb_writers#9); [ 49.135953][ T3608] lock(&journal->j_mutex); [ 49.140528][ T3608] [ 49.140528][ T3608] *** DEADLOCK *** [ 49.140528][ T3608] [ 49.148653][ T3608] 1 lock held by syz-executor380/3608: [ 49.154094][ T3608] #0: ffff888023d8a460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 49.163747][ T3608] [ 49.163747][ T3608] stack backtrace: [ 49.169641][ T3608] CPU: 0 PID: 3608 Comm: syz-executor380 Not tainted 6.1.0-rc3-syzkaller-00280-g64c3dd0b98f5 #0 [ 49.180034][ T3608] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 49.190087][ T3608] Call Trace: [ 49.193355][ T3608] [ 49.196276][ T3608] dump_stack_lvl+0x1b1/0x28e [ 49.200947][ T3608] ? nf_tcp_handle_invalid+0x62e/0x62e [ 49.206400][ T3608] ? print_circular_bug+0x13e/0x1c0 [ 49.211590][ T3608] check_noncircular+0x2cc/0x390 [ 49.216517][ T3608] ? add_chain_block+0x850/0x850 [ 49.221444][ T3608] ? lockdep_lock+0x102/0x290 [ 49.226111][ T3608] ? _find_first_zero_bit+0xe8/0x110 [ 49.231382][ T3608] validate_chain+0x1898/0x6ae0 [ 49.236249][ T3608] ? reacquire_held_locks+0x650/0x650 [ 49.241610][ T3608] ? __kernel_text_address+0x9/0x40 [ 49.246791][ T3608] ? unwind_get_return_address+0x48/0x80 [ 49.252418][ T3608] ? arch_stack_walk+0x98/0xe0 [ 49.257171][ T3608] ? stack_trace_save+0x104/0x1e0 [ 49.262185][ T3608] ? stack_trace_snprint+0xf0/0xf0 [ 49.267285][ T3608] ? check_noncircular+0x1aa/0x390 [ 49.272391][ T3608] ? add_chain_block+0x850/0x850 [ 49.277319][ T3608] ? lockdep_unlock+0x144/0x2e0 [ 49.282154][ T3608] ? lockdep_lock+0x290/0x290 [ 49.286815][ T3608] ? add_lock_to_list+0x1c7/0x2d0 [ 49.291831][ T3608] ? validate_chain+0x1478/0x6ae0 [ 49.296851][ T3608] ? reacquire_held_locks+0x650/0x650 [ 49.302210][ T3608] ? lockdep_unlock+0x144/0x2e0 [ 49.307051][ T3608] ? lockdep_lock+0x290/0x290 [ 49.311802][ T3608] ? add_lock_to_list+0x1c7/0x2d0 [ 49.316817][ T3608] ? validate_chain+0x1478/0x6ae0 [ 49.321837][ T3608] ? reacquire_held_locks+0x650/0x650 [ 49.327202][ T3608] ? reacquire_held_locks+0x650/0x650 [ 49.332560][ T3608] ? is_bpf_text_address+0x253/0x270 [ 49.337832][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 49.342844][ T3608] ? __kernel_text_address+0x9/0x40 [ 49.348024][ T3608] ? unwind_get_return_address+0x48/0x80 [ 49.353645][ T3608] ? arch_stack_walk+0x98/0xe0 [ 49.358544][ T3608] ? stack_trace_save+0x104/0x1e0 [ 49.363660][ T3608] ? stack_trace_snprint+0xf0/0xf0 [ 49.368773][ T3608] ? lockdep_unlock+0x144/0x2e0 [ 49.373635][ T3608] ? lockdep_lock+0x290/0x290 [ 49.378316][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 49.383331][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 49.388952][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 49.394924][ T3608] ? rcu_lock_release+0x5/0x20 [ 49.399679][ T3608] ? read_lock_is_recursive+0x10/0x10 [ 49.405038][ T3608] ? rcu_lock_release+0x5/0x20 [ 49.409790][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 49.414815][ T3608] ? deref_stack_reg+0x17a/0x210 [ 49.419745][ T3608] ? preempt_count_add+0x8d/0x180 [ 49.424776][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 49.429801][ T3608] ? is_bpf_text_address+0x253/0x270 [ 49.435095][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 49.440129][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 49.445146][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 49.450768][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 49.456739][ T3608] ? rcu_lock_release+0x5/0x20 [ 49.461500][ T3608] ? read_lock_is_recursive+0x10/0x10 [ 49.466868][ T3608] ? rcu_lock_release+0x5/0x20 [ 49.471623][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 49.476774][ T3608] ? deref_stack_reg+0x17a/0x210 [ 49.481739][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 49.486770][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 49.492407][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 49.498386][ T3608] ? rcu_lock_release+0x5/0x20 [ 49.503150][ T3608] ? read_lock_is_recursive+0x10/0x10 [ 49.508522][ T3608] ? rcu_lock_release+0x5/0x20 [ 49.513273][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 49.518283][ T3608] ? deref_stack_reg+0x17a/0x210 [ 49.523208][ T3608] ? mark_lock+0x9a/0x350 [ 49.527525][ T3608] ? __lock_acquire+0x1292/0x1f60 [ 49.532539][ T3608] ? mark_lock+0x9a/0x350 [ 49.536857][ T3608] __lock_acquire+0x1292/0x1f60 [ 49.541701][ T3608] lock_acquire+0x182/0x3c0 [ 49.546196][ T3608] ? do_journal_begin_r+0x340/0x1070 [ 49.551475][ T3608] ? read_lock_is_recursive+0x10/0x10 [ 49.556838][ T3608] ? __might_sleep+0xc0/0xc0 [ 49.561417][ T3608] ? reiserfs_write_unlock_nested+0xd0/0x120 [ 49.567385][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 49.572399][ T3608] __mutex_lock_common+0x1bd/0x26e0 [ 49.577587][ T3608] ? do_journal_begin_r+0x340/0x1070 [ 49.582861][ T3608] ? __mutex_unlock_slowpath+0x222/0x770 [ 49.588477][ T3608] ? do_journal_begin_r+0x340/0x1070 [ 49.594096][ T3608] ? mutex_unlock+0x10/0x10 [ 49.598588][ T3608] ? mutex_lock_io_nested+0x60/0x60 [ 49.603871][ T3608] mutex_lock_nested+0x17/0x20 [ 49.608623][ T3608] do_journal_begin_r+0x340/0x1070 [ 49.613773][ T3608] ? journal_join_abort+0xe0/0xe0 [ 49.618806][ T3608] ? print_irqtrace_events+0x220/0x220 [ 49.624276][ T3608] ? ktime_get_coarse_real_ts64+0x45/0x140 [ 49.630079][ T3608] ? lockdep_hardirqs_on+0x8d/0x130 [ 49.635279][ T3608] journal_begin+0x14b/0x350 [ 49.639882][ T3608] reiserfs_dirty_inode+0x108/0x230 [ 49.645072][ T3608] ? reiserfs_free_inode+0x20/0x20 [ 49.650170][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 49.655789][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 49.661845][ T3608] ? current_time+0x1d7/0x300 [ 49.666524][ T3608] ? reiserfs_free_inode+0x20/0x20 [ 49.671623][ T3608] __mark_inode_dirty+0x1e7/0x600 [ 49.676640][ T3608] ? __might_fault+0xb2/0x110 [ 49.681392][ T3608] reiserfs_ioctl+0x293/0x340 [ 49.686057][ T3608] ? __se_sys_ioctl+0xf0/0x170 [ 49.690811][ T3608] ? reiserfs_unpack+0x390/0x390 [ 49.695735][ T3608] __se_sys_ioctl+0xfb/0x170 [ 49.700314][ T3608] do_syscall_64+0x3d/0xb0 [ 49.704722][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 49.710604][ T3608] RIP: 0033:0x7f9efd7e9159 [ 49.715005][ 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 [ 49.734680][ T3608] RSP: 002b:00007ffcd98d5f58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 ioctl(5, FS_IOC_SETVERSION, 0x20000080) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 49.743081][ T3608] RAX: ffffffffffffffda RBX: 0000000