./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor507631871 <...> Warning: Permanently added '10.128.10.21' (ECDSA) to the list of known hosts. execve("./syz-executor507631871", ["./syz-executor507631871"], 0x7ffe842917e0 /* 10 vars */) = 0 brk(NULL) = 0x555556b24000 brk(0x555556b24c40) = 0x555556b24c40 arch_prctl(ARCH_SET_FS, 0x555556b24300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor507631871", 4096) = 27 brk(0x555556b45c40) = 0x555556b45c40 brk(0x555556b46000) = 0x555556b46000 mprotect(0x7feaed5fe000, 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: [ 59.005268][ T3611] loop0: detected capacity change from 0 to 8192 [ 59.018019][ T3611] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 59.031232][ T3611] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 59.040825][ T3611] REISERFS (device loop0): using ordered data mode [ 59.047609][ T3611] 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) ioctl(-1, _IOC(_IOC_WRITE, 0x66, 0x8, 0x28), 0) = -1 EBADF (Bad file descriptor) [ 59.054189][ T3611] 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 [ 59.070999][ T3611] REISERFS (device loop0): checking transaction log (loop0) [ 59.080844][ T3611] REISERFS (device loop0): Using rupasov hash to sort names [ 59.089350][ T3611] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 59.108385][ T3611] [ 59.110768][ T3611] ====================================================== [ 59.117823][ T3611] WARNING: possible circular locking dependency detected [ 59.124863][ T3611] 6.1.0-rc5-syzkaller #0 Not tainted [ 59.130167][ T3611] ------------------------------------------------------ [ 59.137295][ T3611] syz-executor507/3611 is trying to acquire lock: [ 59.143712][ T3611] ffffc90003bf10f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x340/0x1070 [ 59.153469][ T3611] [ 59.153469][ T3611] but task is already holding lock: [ 59.160840][ T3611] ffff8880242e6460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 59.170082][ T3611] [ 59.170082][ T3611] which lock already depends on the new lock. [ 59.170082][ T3611] [ 59.180482][ T3611] [ 59.180482][ T3611] the existing dependency chain (in reverse order) is: [ 59.189570][ T3611] [ 59.189570][ T3611] -> #2 (sb_writers#9){.+.+}-{0:0}: [ 59.196952][ T3611] lock_acquire+0x182/0x3c0 [ 59.201978][ T3611] sb_start_write+0x4d/0x1a0 [ 59.207083][ T3611] mnt_want_write_file+0x5a/0x1f0 [ 59.212618][ T3611] reiserfs_ioctl+0x16e/0x340 [ 59.217817][ T3611] __se_sys_ioctl+0xfb/0x170 [ 59.222929][ T3611] do_syscall_64+0x3d/0xb0 [ 59.227877][ T3611] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 59.234288][ T3611] [ 59.234288][ T3611] -> #1 (&sbi->lock){+.+.}-{3:3}: [ 59.241490][ T3611] lock_acquire+0x182/0x3c0 [ 59.246518][ T3611] __mutex_lock_common+0x1bd/0x26e0 [ 59.252228][ T3611] mutex_lock_nested+0x17/0x20 [ 59.257504][ T3611] reiserfs_write_lock_nested+0x5b/0xd0 [ 59.263572][ T3611] do_journal_begin_r+0x34b/0x1070 [ 59.269197][ T3611] journal_begin+0x14b/0x350 [ 59.274301][ T3611] reiserfs_fill_super+0x172b/0x24a0 [ 59.280107][ T3611] mount_bdev+0x26c/0x3a0 [ 59.284951][ T3611] legacy_get_tree+0xea/0x180 [ 59.290231][ T3611] vfs_get_tree+0x88/0x270 [ 59.295171][ T3611] do_new_mount+0x289/0xad0 [ 59.300188][ T3611] __se_sys_mount+0x2d3/0x3c0 [ 59.305384][ T3611] do_syscall_64+0x3d/0xb0 [ 59.310439][ T3611] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 59.316854][ T3611] [ 59.316854][ T3611] -> #0 (&journal->j_mutex){+.+.}-{3:3}: [ 59.324667][ T3611] validate_chain+0x1898/0x6ae0 [ 59.330038][ T3611] __lock_acquire+0x1292/0x1f60 [ 59.335405][ T3611] lock_acquire+0x182/0x3c0 [ 59.340440][ T3611] __mutex_lock_common+0x1bd/0x26e0 [ 59.346167][ T3611] mutex_lock_nested+0x17/0x20 [ 59.351447][ T3611] do_journal_begin_r+0x340/0x1070 [ 59.357263][ T3611] journal_begin+0x14b/0x350 [ 59.362439][ T3611] reiserfs_dirty_inode+0x108/0x230 [ 59.368180][ T3611] __mark_inode_dirty+0x1e7/0x600 [ 59.373736][ T3611] reiserfs_ioctl+0x293/0x340 [ 59.379037][ T3611] __se_sys_ioctl+0xfb/0x170 [ 59.384158][ T3611] do_syscall_64+0x3d/0xb0 [ 59.389092][ T3611] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 59.395504][ T3611] [ 59.395504][ T3611] other info that might help us debug this: [ 59.395504][ T3611] [ 59.405724][ T3611] Chain exists of: [ 59.405724][ T3611] &journal->j_mutex --> &sbi->lock --> sb_writers#9 [ 59.405724][ T3611] [ 59.418242][ T3611] Possible unsafe locking scenario: [ 59.418242][ T3611] [ 59.425679][ T3611] CPU0 CPU1 [ 59.431119][ T3611] ---- ---- [ 59.436529][ T3611] lock(sb_writers#9); [ 59.440684][ T3611] lock(&sbi->lock); [ 59.447178][ T3611] lock(sb_writers#9); [ 59.453851][ T3611] lock(&journal->j_mutex); [ 59.458437][ T3611] [ 59.458437][ T3611] *** DEADLOCK *** [ 59.458437][ T3611] [ 59.466568][ T3611] 1 lock held by syz-executor507/3611: [ 59.472013][ T3611] #0: ffff8880242e6460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 59.481690][ T3611] [ 59.481690][ T3611] stack backtrace: [ 59.487573][ T3611] CPU: 0 PID: 3611 Comm: syz-executor507 Not tainted 6.1.0-rc5-syzkaller #0 [ 59.496246][ T3611] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 59.506305][ T3611] Call Trace: [ 59.509598][ T3611] [ 59.512535][ T3611] dump_stack_lvl+0x1b1/0x28e [ 59.517216][ T3611] ? nf_tcp_handle_invalid+0x62e/0x62e [ 59.522682][ T3611] ? print_circular_bug+0x13e/0x1c0 [ 59.527886][ T3611] check_noncircular+0x2cc/0x390 [ 59.532824][ T3611] ? add_chain_block+0x850/0x850 [ 59.537763][ T3611] ? lockdep_lock+0x102/0x290 [ 59.542459][ T3611] ? _find_first_zero_bit+0xe8/0x110 [ 59.547752][ T3611] validate_chain+0x1898/0x6ae0 [ 59.552640][ T3611] ? reacquire_held_locks+0x650/0x650 [ 59.558017][ T3611] ? __kernel_text_address+0x9/0x40 [ 59.563208][ T3611] ? unwind_get_return_address+0x48/0x80 [ 59.568840][ T3611] ? arch_stack_walk+0x98/0xe0 [ 59.573613][ T3611] ? stack_trace_save+0x104/0x1e0 [ 59.578641][ T3611] ? stack_trace_snprint+0xf0/0xf0 [ 59.583753][ T3611] ? check_noncircular+0x1aa/0x390 [ 59.588870][ T3611] ? add_chain_block+0x850/0x850 [ 59.593811][ T3611] ? lockdep_unlock+0x144/0x2e0 [ 59.598661][ T3611] ? lockdep_lock+0x290/0x290 [ 59.603334][ T3611] ? add_lock_to_list+0x1c7/0x2d0 [ 59.608356][ T3611] ? validate_chain+0x1478/0x6ae0 [ 59.613387][ T3611] ? reacquire_held_locks+0x650/0x650 [ 59.618851][ T3611] ? lockdep_unlock+0x144/0x2e0 [ 59.623702][ T3611] ? lockdep_lock+0x290/0x290 [ 59.628375][ T3611] ? add_lock_to_list+0x1c7/0x2d0 [ 59.633399][ T3611] ? validate_chain+0x1478/0x6ae0 [ 59.638435][ T3611] ? reacquire_held_locks+0x650/0x650 [ 59.643821][ T3611] ? reacquire_held_locks+0x650/0x650 [ 59.649198][ T3611] ? is_bpf_text_address+0x253/0x270 [ 59.654568][ T3611] ? stack_trace_save+0x1e0/0x1e0 [ 59.659768][ T3611] ? __kernel_text_address+0x9/0x40 [ 59.664962][ T3611] ? unwind_get_return_address+0x48/0x80 [ 59.670594][ T3611] ? arch_stack_walk+0x98/0xe0 [ 59.675444][ T3611] ? stack_trace_save+0x104/0x1e0 [ 59.680520][ T3611] ? stack_trace_snprint+0xf0/0xf0 [ 59.685630][ T3611] ? lockdep_unlock+0x144/0x2e0 [ 59.690476][ T3611] ? lockdep_lock+0x290/0x290 [ 59.695151][ T3611] ? lockdep_unlock+0x144/0x2e0 [ 59.700028][ T3611] ? stack_trace_save+0x1e0/0x1e0 [ 59.705051][ T3611] ? rcu_read_lock_sched_held+0x87/0x110 [ 59.710703][ T3611] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 59.716686][ T3611] ? rcu_lock_release+0x5/0x20 [ 59.721451][ T3611] ? read_lock_is_recursive+0x10/0x10 [ 59.726828][ T3611] ? rcu_lock_release+0x5/0x20 [ 59.731594][ T3611] ? __lock_acquire+0x1f60/0x1f60 [ 59.736618][ T3611] ? deref_stack_reg+0x17a/0x210 [ 59.741555][ T3611] ? preempt_count_add+0x8d/0x180 [ 59.746592][ T3611] ? stack_trace_save+0x1e0/0x1e0 [ 59.751614][ T3611] ? is_bpf_text_address+0x253/0x270 [ 59.756895][ T3611] ? stack_trace_save+0x1e0/0x1e0 [ 59.761921][ T3611] ? stack_trace_save+0x1e0/0x1e0 [ 59.766946][ T3611] ? rcu_read_lock_sched_held+0x87/0x110 [ 59.772575][ T3611] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 59.778555][ T3611] ? rcu_lock_release+0x5/0x20 [ 59.783324][ T3611] ? read_lock_is_recursive+0x10/0x10 [ 59.788696][ T3611] ? rcu_lock_release+0x5/0x20 [ 59.793460][ T3611] ? __lock_acquire+0x1f60/0x1f60 [ 59.798495][ T3611] ? deref_stack_reg+0x17a/0x210 [ 59.803452][ T3611] ? stack_trace_save+0x1e0/0x1e0 [ 59.808570][ T3611] ? rcu_read_lock_sched_held+0x87/0x110 [ 59.814214][ T3611] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 59.820216][ T3611] ? rcu_lock_release+0x5/0x20 [ 59.824994][ T3611] ? read_lock_is_recursive+0x10/0x10 [ 59.830368][ T3611] ? rcu_lock_release+0x5/0x20 [ 59.835132][ T3611] ? __lock_acquire+0x1f60/0x1f60 [ 59.840156][ T3611] ? deref_stack_reg+0x17a/0x210 [ 59.845090][ T3611] ? mark_lock+0x9a/0x350 [ 59.849416][ T3611] ? __lock_acquire+0x1292/0x1f60 [ 59.854445][ T3611] ? mark_lock+0x9a/0x350 [ 59.858774][ T3611] __lock_acquire+0x1292/0x1f60 [ 59.863630][ T3611] lock_acquire+0x182/0x3c0 [ 59.868181][ T3611] ? do_journal_begin_r+0x340/0x1070 [ 59.873473][ T3611] ? read_lock_is_recursive+0x10/0x10 [ 59.878847][ T3611] ? __might_sleep+0xc0/0xc0 [ 59.883436][ T3611] ? reiserfs_write_unlock_nested+0xd0/0x120 [ 59.889415][ T3611] ? __lock_acquire+0x1f60/0x1f60 [ 59.894441][ T3611] __mutex_lock_common+0x1bd/0x26e0 [ 59.899631][ T3611] ? do_journal_begin_r+0x340/0x1070 [ 59.904917][ T3611] ? __mutex_unlock_slowpath+0x222/0x770 [ 59.910541][ T3611] ? do_journal_begin_r+0x340/0x1070 [ 59.915909][ T3611] ? mutex_unlock+0x10/0x10 [ 59.920402][ T3611] ? mutex_lock_io_nested+0x60/0x60 [ 59.925599][ T3611] mutex_lock_nested+0x17/0x20 [ 59.930531][ T3611] do_journal_begin_r+0x340/0x1070 [ 59.935650][ T3611] ? journal_join_abort+0xe0/0xe0 [ 59.940724][ T3611] ? print_irqtrace_events+0x220/0x220 [ 59.946195][ T3611] ? ktime_get_coarse_real_ts64+0x45/0x140 [ 59.952019][ T3611] ? lockdep_hardirqs_on+0x8d/0x130 [ 59.957228][ T3611] journal_begin+0x14b/0x350 [ 59.961820][ T3611] reiserfs_dirty_inode+0x108/0x230 [ 59.967021][ T3611] ? reiserfs_free_inode+0x20/0x20 [ 59.972154][ T3611] ? rcu_read_lock_sched_held+0x87/0x110 [ 59.977783][ T3611] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 59.983770][ T3611] ? current_time+0x1d7/0x300 [ 59.988446][ T3611] ? reiserfs_free_inode+0x20/0x20 [ 59.993555][ T3611] __mark_inode_dirty+0x1e7/0x600 [ 59.998578][ T3611] ? __might_fault+0xb2/0x110 [ 60.003264][ T3611] reiserfs_ioctl+0x293/0x340 [ 60.007964][ T3611] ? __se_sys_ioctl+0xf0/0x170 [ 60.012826][ T3611] ? reiserfs_unpack+0x390/0x390 [ 60.017766][ T3611] __se_sys_ioctl+0xfb/0x170 [ 60.022371][ T3611] do_syscall_64+0x3d/0xb0 [ 60.026820][ T3611] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.032715][ T3611] RIP: 0033:0x7feaed592179 [ 60.037120][ T3611] 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 +++ [ 60.056726][ T3611] RSP: 002b:00007ffcac891f68 EFLAGS: 00000246 ORIG_R