./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3936299942 <...> DUID 00:04:f8:b5:8a:47:ae:09:95:3a:43:2d:d7:42:86:31:94:89 forked to background, child pid 3186 [ 28.539097][ T3187] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.551502][ T3187] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.223' (ECDSA) to the list of known hosts. execve("./syz-executor3936299942", ["./syz-executor3936299942"], 0x7fff03b94dc0 /* 10 vars */) = 0 brk(NULL) = 0x555556677000 brk(0x555556677c40) = 0x555556677c40 arch_prctl(ARCH_SET_FS, 0x555556677300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3936299942", 4096) = 28 brk(0x555556698c40) = 0x555556698c40 brk(0x555556699000) = 0x555556699000 mprotect(0x7f36e6d46000, 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: [ 52.942991][ T3608] loop0: detected capacity change from 0 to 8192 [ 52.955823][ T3608] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 52.969253][ T3608] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 52.978763][ T3608] REISERFS (device loop0): using ordered data mode [ 52.985295][ 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), 0x20000080) = -1 EBADF (Bad file descriptor) openat(AT_FDCWD, NULL, O_RDONLY|O_NONBLOCK|O_NOATIME) = -1 EFAULT (Bad address) [ 52.991926][ 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 [ 53.009025][ T3608] REISERFS (device loop0): checking transaction log (loop0) [ 53.019813][ T3608] REISERFS (device loop0): Using rupasov hash to sort names [ 53.028375][ T3608] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 53.048030][ T3608] [ 53.050411][ T3608] ====================================================== [ 53.057437][ T3608] WARNING: possible circular locking dependency detected [ 53.064468][ T3608] 6.1.0-rc4-syzkaller-00159-g4bbf3422df78 #0 Not tainted [ 53.071505][ T3608] ------------------------------------------------------ [ 53.078532][ T3608] syz-executor393/3608 is trying to acquire lock: [ 53.084956][ T3608] ffffc90003b310f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x340/0x1070 [ 53.094710][ T3608] [ 53.094710][ T3608] but task is already holding lock: [ 53.102058][ T3608] ffff8880258f2460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 53.111259][ T3608] [ 53.111259][ T3608] which lock already depends on the new lock. [ 53.111259][ T3608] [ 53.121644][ T3608] [ 53.121644][ T3608] the existing dependency chain (in reverse order) is: [ 53.130641][ T3608] [ 53.130641][ T3608] -> #2 (sb_writers#9){.+.+}-{0:0}: [ 53.138015][ T3608] lock_acquire+0x182/0x3c0 [ 53.143124][ T3608] sb_start_write+0x4d/0x1a0 [ 53.148223][ T3608] mnt_want_write_file+0x5a/0x1f0 [ 53.153756][ T3608] reiserfs_ioctl+0x16e/0x340 [ 53.158946][ T3608] __se_sys_ioctl+0xfb/0x170 [ 53.164052][ T3608] do_syscall_64+0x3d/0xb0 [ 53.168992][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.175394][ T3608] [ 53.175394][ T3608] -> #1 (&sbi->lock){+.+.}-{3:3}: [ 53.182586][ T3608] lock_acquire+0x182/0x3c0 [ 53.187599][ T3608] __mutex_lock_common+0x1bd/0x26e0 [ 53.193302][ T3608] mutex_lock_nested+0x17/0x20 [ 53.198573][ T3608] reiserfs_write_lock_nested+0x5b/0xd0 [ 53.204715][ T3608] do_journal_begin_r+0x34b/0x1070 [ 53.210335][ T3608] journal_begin+0x14b/0x350 [ 53.215433][ T3608] reiserfs_fill_super+0x172b/0x24a0 [ 53.221231][ T3608] mount_bdev+0x26c/0x3a0 [ 53.226066][ T3608] legacy_get_tree+0xea/0x180 [ 53.231253][ T3608] vfs_get_tree+0x88/0x270 [ 53.236178][ T3608] do_new_mount+0x289/0xad0 [ 53.241190][ T3608] __se_sys_mount+0x2d3/0x3c0 [ 53.246372][ T3608] do_syscall_64+0x3d/0xb0 [ 53.251297][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.257699][ T3608] [ 53.257699][ T3608] -> #0 (&journal->j_mutex){+.+.}-{3:3}: [ 53.265496][ T3608] validate_chain+0x1898/0x6ae0 [ 53.270860][ T3608] __lock_acquire+0x1292/0x1f60 [ 53.276218][ T3608] lock_acquire+0x182/0x3c0 [ 53.281343][ T3608] __mutex_lock_common+0x1bd/0x26e0 [ 53.287051][ T3608] mutex_lock_nested+0x17/0x20 [ 53.292321][ T3608] do_journal_begin_r+0x340/0x1070 [ 53.297942][ T3608] journal_begin+0x14b/0x350 [ 53.303042][ T3608] reiserfs_dirty_inode+0x108/0x230 [ 53.308751][ T3608] __mark_inode_dirty+0x1e7/0x600 [ 53.314286][ T3608] reiserfs_ioctl+0x293/0x340 [ 53.319472][ T3608] __se_sys_ioctl+0xfb/0x170 [ 53.324836][ T3608] do_syscall_64+0x3d/0xb0 [ 53.329763][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.336166][ T3608] [ 53.336166][ T3608] other info that might help us debug this: [ 53.336166][ T3608] [ 53.347768][ T3608] Chain exists of: [ 53.347768][ T3608] &journal->j_mutex --> &sbi->lock --> sb_writers#9 [ 53.347768][ T3608] [ 53.361115][ T3608] Possible unsafe locking scenario: [ 53.361115][ T3608] [ 53.368555][ T3608] CPU0 CPU1 [ 53.373903][ T3608] ---- ---- [ 53.379338][ T3608] lock(sb_writers#9); [ 53.383486][ T3608] lock(&sbi->lock); [ 53.389970][ T3608] lock(sb_writers#9); [ 53.396633][ T3608] lock(&journal->j_mutex); [ 53.401211][ T3608] [ 53.401211][ T3608] *** DEADLOCK *** [ 53.401211][ T3608] [ 53.409337][ T3608] 1 lock held by syz-executor393/3608: [ 53.414781][ T3608] #0: ffff8880258f2460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 53.424431][ T3608] [ 53.424431][ T3608] stack backtrace: [ 53.430303][ T3608] CPU: 0 PID: 3608 Comm: syz-executor393 Not tainted 6.1.0-rc4-syzkaller-00159-g4bbf3422df78 #0 [ 53.440694][ T3608] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 53.450737][ T3608] Call Trace: [ 53.454010][ T3608] [ 53.456933][ T3608] dump_stack_lvl+0x1b1/0x28e [ 53.461604][ T3608] ? nf_tcp_handle_invalid+0x62e/0x62e [ 53.467055][ T3608] ? print_circular_bug+0x13e/0x1c0 [ 53.472249][ T3608] check_noncircular+0x2cc/0x390 [ 53.477188][ T3608] ? add_chain_block+0x850/0x850 [ 53.482125][ T3608] ? lockdep_lock+0x102/0x290 [ 53.486795][ T3608] ? _find_first_zero_bit+0xe8/0x110 [ 53.492069][ T3608] validate_chain+0x1898/0x6ae0 [ 53.496918][ T3608] ? reacquire_held_locks+0x650/0x650 [ 53.502282][ T3608] ? __kernel_text_address+0x9/0x40 [ 53.507466][ T3608] ? unwind_get_return_address+0x48/0x80 [ 53.513100][ T3608] ? arch_stack_walk+0x98/0xe0 [ 53.519851][ T3608] ? stack_trace_save+0x104/0x1e0 [ 53.524870][ T3608] ? stack_trace_snprint+0xf0/0xf0 [ 53.529970][ T3608] ? check_noncircular+0x1aa/0x390 [ 53.535075][ T3608] ? add_chain_block+0x850/0x850 [ 53.540002][ T3608] ? lockdep_unlock+0x144/0x2e0 [ 53.544846][ T3608] ? lockdep_lock+0x290/0x290 [ 53.549509][ T3608] ? add_lock_to_list+0x1c7/0x2d0 [ 53.554526][ T3608] ? validate_chain+0x1478/0x6ae0 [ 53.559547][ T3608] ? reacquire_held_locks+0x650/0x650 [ 53.564907][ T3608] ? lockdep_unlock+0x144/0x2e0 [ 53.569754][ T3608] ? lockdep_lock+0x290/0x290 [ 53.574418][ T3608] ? add_lock_to_list+0x1c7/0x2d0 [ 53.579436][ T3608] ? validate_chain+0x1478/0x6ae0 [ 53.584459][ T3608] ? reacquire_held_locks+0x650/0x650 [ 53.589823][ T3608] ? reacquire_held_locks+0x650/0x650 [ 53.595183][ T3608] ? is_bpf_text_address+0x253/0x270 [ 53.600457][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 53.605478][ T3608] ? __kernel_text_address+0x9/0x40 [ 53.610666][ T3608] ? unwind_get_return_address+0x48/0x80 [ 53.616291][ T3608] ? arch_stack_walk+0x98/0xe0 [ 53.621046][ T3608] ? stack_trace_save+0x104/0x1e0 [ 53.626067][ T3608] ? stack_trace_snprint+0xf0/0xf0 [ 53.631180][ T3608] ? lockdep_unlock+0x144/0x2e0 [ 53.636033][ T3608] ? lockdep_lock+0x290/0x290 [ 53.640713][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 53.645735][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.651456][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.658237][ T3608] ? rcu_lock_release+0x5/0x20 [ 53.663016][ T3608] ? read_lock_is_recursive+0x10/0x10 [ 53.668380][ T3608] ? rcu_lock_release+0x5/0x20 [ 53.673135][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 53.678153][ T3608] ? deref_stack_reg+0x17a/0x210 [ 53.683099][ T3608] ? preempt_count_add+0x8d/0x180 [ 53.688118][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 53.693134][ T3608] ? is_bpf_text_address+0x253/0x270 [ 53.698410][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 53.703428][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 53.708445][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.714065][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.720037][ T3608] ? rcu_lock_release+0x5/0x20 [ 53.724796][ T3608] ? read_lock_is_recursive+0x10/0x10 [ 53.730159][ T3608] ? rcu_lock_release+0x5/0x20 [ 53.734913][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 53.739930][ T3608] ? deref_stack_reg+0x17a/0x210 [ 53.744861][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 53.749877][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.755499][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.761468][ T3608] ? rcu_lock_release+0x5/0x20 [ 53.766226][ T3608] ? read_lock_is_recursive+0x10/0x10 [ 53.771588][ T3608] ? rcu_lock_release+0x5/0x20 [ 53.776341][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 53.781355][ T3608] ? deref_stack_reg+0x17a/0x210 [ 53.786295][ T3608] ? mark_lock+0x9a/0x350 [ 53.790615][ T3608] ? __lock_acquire+0x1292/0x1f60 [ 53.795642][ T3608] ? mark_lock+0x9a/0x350 [ 53.799963][ T3608] __lock_acquire+0x1292/0x1f60 [ 53.804811][ T3608] lock_acquire+0x182/0x3c0 [ 53.809305][ T3608] ? do_journal_begin_r+0x340/0x1070 [ 53.814579][ T3608] ? read_lock_is_recursive+0x10/0x10 [ 53.819947][ T3608] ? __might_sleep+0xc0/0xc0 [ 53.824528][ T3608] ? reiserfs_write_unlock_nested+0xd0/0x120 [ 53.830502][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 53.835516][ T3608] __mutex_lock_common+0x1bd/0x26e0 [ 53.840702][ T3608] ? do_journal_begin_r+0x340/0x1070 [ 53.845978][ T3608] ? __mutex_unlock_slowpath+0x222/0x770 [ 53.851598][ T3608] ? do_journal_begin_r+0x340/0x1070 [ 53.856883][ T3608] ? mutex_unlock+0x10/0x10 [ 53.861370][ T3608] ? mutex_lock_io_nested+0x60/0x60 [ 53.866560][ T3608] mutex_lock_nested+0x17/0x20 [ 53.871312][ T3608] do_journal_begin_r+0x340/0x1070 [ 53.876419][ T3608] ? journal_join_abort+0xe0/0xe0 [ 53.881435][ T3608] ? print_irqtrace_events+0x220/0x220 [ 53.886886][ T3608] ? ktime_get_coarse_real_ts64+0x45/0x140 [ 53.892683][ T3608] ? lockdep_hardirqs_on+0x8d/0x130 [ 53.897876][ T3608] journal_begin+0x14b/0x350 [ 53.903325][ T3608] reiserfs_dirty_inode+0x108/0x230 [ 53.908516][ T3608] ? reiserfs_free_inode+0x20/0x20 [ 53.913634][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.919292][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.925282][ T3608] ? current_time+0x1d7/0x300 [ 53.929949][ T3608] ? reiserfs_free_inode+0x20/0x20 [ 53.935056][ T3608] __mark_inode_dirty+0x1e7/0x600 [ 53.940077][ T3608] ? __might_fault+0xb2/0x110 [ 53.944744][ T3608] reiserfs_ioctl+0x293/0x340 [ 53.949413][ T3608] ? __se_sys_ioctl+0xf0/0x170 [ 53.954166][ T3608] ? reiserfs_unpack+0x390/0x390 [ 53.959089][ T3608] __se_sys_ioctl+0xfb/0x170 [ 53.963672][ T3608] do_syscall_64+0x3d/0xb0 [ 53.968080][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.973964][ T3608] RIP: 0033:0x7f36e6cda1c9 [ 53.978370][ 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 ioctl(5, FS_IOC_SETVERSION, 0x20000080) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 53.997966][ T3608] RSP: 002b:00007fffe3668c48 EFLAGS