./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2801331494 <...> Warning: Permanently added '10.128.0.231' (ECDSA) to the list of known hosts. execve("./syz-executor2801331494", ["./syz-executor2801331494"], 0x7ffcdf1fbe90 /* 10 vars */) = 0 brk(NULL) = 0x5555574fc000 brk(0x5555574fcc40) = 0x5555574fcc40 arch_prctl(ARCH_SET_FS, 0x5555574fc300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2801331494", 4096) = 28 brk(0x55555751dc40) = 0x55555751dc40 brk(0x55555751e000) = 0x55555751e000 mprotect(0x7f51cf39f000, 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: [ 45.266503][ T3608] loop0: detected capacity change from 0 to 8192 [ 45.277356][ T3608] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 45.290583][ T3608] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 45.300152][ T3608] REISERFS (device loop0): using ordered data mode [ 45.306644][ 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) [ 45.313056][ 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 [ 45.329742][ T3608] REISERFS (device loop0): checking transaction log (loop0) [ 45.338816][ T3608] REISERFS (device loop0): Using rupasov hash to sort names [ 45.347334][ T3608] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 45.368347][ T3608] [ 45.370695][ T3608] ====================================================== [ 45.377726][ T3608] WARNING: possible circular locking dependency detected [ 45.384735][ T3608] 6.1.0-rc5-syzkaller #0 Not tainted [ 45.389992][ T3608] ------------------------------------------------------ [ 45.396983][ T3608] syz-executor280/3608 is trying to acquire lock: [ 45.403367][ T3608] ffffc90003d010f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x340/0x1070 [ 45.413090][ T3608] [ 45.413090][ T3608] but task is already holding lock: [ 45.420428][ T3608] ffff888021a00460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 45.429618][ T3608] [ 45.429618][ T3608] which lock already depends on the new lock. [ 45.429618][ T3608] [ 45.440003][ T3608] [ 45.440003][ T3608] the existing dependency chain (in reverse order) is: [ 45.449001][ T3608] [ 45.449001][ T3608] -> #2 (sb_writers#9){.+.+}-{0:0}: [ 45.456372][ T3608] lock_acquire+0x182/0x3c0 [ 45.461379][ T3608] sb_start_write+0x4d/0x1a0 [ 45.466467][ T3608] mnt_want_write_file+0x5a/0x1f0 [ 45.471988][ T3608] reiserfs_ioctl+0x16e/0x340 [ 45.477172][ T3608] __se_sys_ioctl+0xfb/0x170 [ 45.482265][ T3608] do_syscall_64+0x3d/0xb0 [ 45.487188][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 45.493581][ T3608] [ 45.493581][ T3608] -> #1 (&sbi->lock){+.+.}-{3:3}: [ 45.500764][ T3608] lock_acquire+0x182/0x3c0 [ 45.505779][ T3608] __mutex_lock_common+0x1bd/0x26e0 [ 45.511471][ T3608] mutex_lock_nested+0x17/0x20 [ 45.516728][ T3608] reiserfs_write_lock_nested+0x5b/0xd0 [ 45.522773][ T3608] do_journal_begin_r+0x34b/0x1070 [ 45.528468][ T3608] journal_begin+0x14b/0x350 [ 45.533553][ T3608] reiserfs_fill_super+0x172b/0x24a0 [ 45.539336][ T3608] mount_bdev+0x26c/0x3a0 [ 45.544159][ T3608] legacy_get_tree+0xea/0x180 [ 45.549351][ T3608] vfs_get_tree+0x88/0x270 [ 45.554265][ T3608] do_new_mount+0x289/0xad0 [ 45.559266][ T3608] __se_sys_mount+0x2d3/0x3c0 [ 45.564439][ T3608] do_syscall_64+0x3d/0xb0 [ 45.569355][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 45.575748][ T3608] [ 45.575748][ T3608] -> #0 (&journal->j_mutex){+.+.}-{3:3}: [ 45.583535][ T3608] validate_chain+0x1898/0x6ae0 [ 45.588883][ T3608] __lock_acquire+0x1292/0x1f60 [ 45.594236][ T3608] lock_acquire+0x182/0x3c0 [ 45.599236][ T3608] __mutex_lock_common+0x1bd/0x26e0 [ 45.604930][ T3608] mutex_lock_nested+0x17/0x20 [ 45.610188][ T3608] do_journal_begin_r+0x340/0x1070 [ 45.615794][ T3608] journal_begin+0x14b/0x350 [ 45.620889][ T3608] reiserfs_dirty_inode+0x108/0x230 [ 45.626679][ T3608] __mark_inode_dirty+0x1e7/0x600 [ 45.632214][ T3608] reiserfs_ioctl+0x293/0x340 [ 45.637398][ T3608] __se_sys_ioctl+0xfb/0x170 [ 45.642492][ T3608] do_syscall_64+0x3d/0xb0 [ 45.647409][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 45.653805][ T3608] [ 45.653805][ T3608] other info that might help us debug this: [ 45.653805][ T3608] [ 45.664011][ T3608] Chain exists of: [ 45.664011][ T3608] &journal->j_mutex --> &sbi->lock --> sb_writers#9 [ 45.664011][ T3608] [ 45.676498][ T3608] Possible unsafe locking scenario: [ 45.676498][ T3608] [ 45.683924][ T3608] CPU0 CPU1 [ 45.689264][ T3608] ---- ---- [ 45.694608][ T3608] lock(sb_writers#9); [ 45.698746][ T3608] lock(&sbi->lock); [ 45.705228][ T3608] lock(sb_writers#9); [ 45.711882][ T3608] lock(&journal->j_mutex); [ 45.716445][ T3608] [ 45.716445][ T3608] *** DEADLOCK *** [ 45.716445][ T3608] [ 45.724566][ T3608] 1 lock held by syz-executor280/3608: [ 45.730006][ T3608] #0: ffff888021a00460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 45.739637][ T3608] [ 45.739637][ T3608] stack backtrace: [ 45.745501][ T3608] CPU: 0 PID: 3608 Comm: syz-executor280 Not tainted 6.1.0-rc5-syzkaller #0 [ 45.754147][ T3608] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 45.764179][ T3608] Call Trace: [ 45.767438][ T3608] [ 45.770353][ T3608] dump_stack_lvl+0x1b1/0x28e [ 45.775018][ T3608] ? nf_tcp_handle_invalid+0x62e/0x62e [ 45.780459][ T3608] ? print_circular_bug+0x13e/0x1c0 [ 45.785639][ T3608] check_noncircular+0x2cc/0x390 [ 45.790555][ T3608] ? add_chain_block+0x850/0x850 [ 45.795472][ T3608] ? lockdep_lock+0x102/0x290 [ 45.800129][ T3608] ? _find_first_zero_bit+0xe8/0x110 [ 45.805390][ T3608] validate_chain+0x1898/0x6ae0 [ 45.810231][ T3608] ? reacquire_held_locks+0x650/0x650 [ 45.815685][ T3608] ? __kernel_text_address+0x9/0x40 [ 45.820861][ T3608] ? unwind_get_return_address+0x48/0x80 [ 45.826471][ T3608] ? arch_stack_walk+0x98/0xe0 [ 45.831211][ T3608] ? stack_trace_save+0x104/0x1e0 [ 45.836213][ T3608] ? stack_trace_snprint+0xf0/0xf0 [ 45.841302][ T3608] ? check_noncircular+0x1aa/0x390 [ 45.846392][ T3608] ? add_chain_block+0x850/0x850 [ 45.851312][ T3608] ? lockdep_unlock+0x144/0x2e0 [ 45.856142][ T3608] ? lockdep_lock+0x290/0x290 [ 45.860797][ T3608] ? add_lock_to_list+0x1c7/0x2d0 [ 45.865801][ T3608] ? validate_chain+0x1478/0x6ae0 [ 45.870809][ T3608] ? reacquire_held_locks+0x650/0x650 [ 45.876159][ T3608] ? lockdep_unlock+0x144/0x2e0 [ 45.881001][ T3608] ? lockdep_lock+0x290/0x290 [ 45.885661][ T3608] ? add_lock_to_list+0x1c7/0x2d0 [ 45.890669][ T3608] ? validate_chain+0x1478/0x6ae0 [ 45.895677][ T3608] ? reacquire_held_locks+0x650/0x650 [ 45.901027][ T3608] ? reacquire_held_locks+0x650/0x650 [ 45.906376][ T3608] ? is_bpf_text_address+0x253/0x270 [ 45.911645][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 45.916649][ T3608] ? __kernel_text_address+0x9/0x40 [ 45.921831][ T3608] ? unwind_get_return_address+0x48/0x80 [ 45.927442][ T3608] ? arch_stack_walk+0x98/0xe0 [ 45.932191][ T3608] ? stack_trace_save+0x104/0x1e0 [ 45.937194][ T3608] ? stack_trace_snprint+0xf0/0xf0 [ 45.942283][ T3608] ? lockdep_unlock+0x144/0x2e0 [ 45.947138][ T3608] ? lockdep_lock+0x290/0x290 [ 45.951800][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 45.956803][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 45.962422][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 45.968387][ T3608] ? rcu_lock_release+0x5/0x20 [ 45.973137][ T3608] ? read_lock_is_recursive+0x10/0x10 [ 45.978484][ T3608] ? rcu_lock_release+0x5/0x20 [ 45.983234][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 45.988243][ T3608] ? deref_stack_reg+0x17a/0x210 [ 45.993163][ T3608] ? preempt_count_add+0x8d/0x180 [ 45.998168][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 46.003171][ T3608] ? is_bpf_text_address+0x253/0x270 [ 46.008432][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 46.013438][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 46.018440][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 46.024052][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 46.030010][ T3608] ? rcu_lock_release+0x5/0x20 [ 46.034755][ T3608] ? read_lock_is_recursive+0x10/0x10 [ 46.040123][ T3608] ? rcu_lock_release+0x5/0x20 [ 46.044868][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 46.049872][ T3608] ? deref_stack_reg+0x17a/0x210 [ 46.054790][ T3608] ? stack_trace_save+0x1e0/0x1e0 [ 46.059791][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 46.065401][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 46.071361][ T3608] ? rcu_lock_release+0x5/0x20 [ 46.076106][ T3608] ? read_lock_is_recursive+0x10/0x10 [ 46.081457][ T3608] ? rcu_lock_release+0x5/0x20 [ 46.086200][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 46.091202][ T3608] ? deref_stack_reg+0x17a/0x210 [ 46.096120][ T3608] ? mark_lock+0x9a/0x350 [ 46.100431][ T3608] ? __lock_acquire+0x1292/0x1f60 [ 46.105444][ T3608] ? mark_lock+0x9a/0x350 [ 46.109752][ T3608] __lock_acquire+0x1292/0x1f60 [ 46.114586][ T3608] lock_acquire+0x182/0x3c0 [ 46.119078][ T3608] ? do_journal_begin_r+0x340/0x1070 [ 46.124347][ T3608] ? read_lock_is_recursive+0x10/0x10 [ 46.129700][ T3608] ? __might_sleep+0xc0/0xc0 [ 46.134271][ T3608] ? reiserfs_write_unlock_nested+0xd0/0x120 [ 46.140231][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 46.145236][ T3608] __mutex_lock_common+0x1bd/0x26e0 [ 46.150410][ T3608] ? do_journal_begin_r+0x340/0x1070 [ 46.155673][ T3608] ? __mutex_unlock_slowpath+0x222/0x770 [ 46.161283][ T3608] ? do_journal_begin_r+0x340/0x1070 [ 46.166543][ T3608] ? mutex_unlock+0x10/0x10 [ 46.171021][ T3608] ? mutex_lock_io_nested+0x60/0x60 [ 46.176197][ T3608] mutex_lock_nested+0x17/0x20 [ 46.180938][ T3608] do_journal_begin_r+0x340/0x1070 [ 46.186030][ T3608] ? journal_join_abort+0xe0/0xe0 [ 46.191043][ T3608] ? print_irqtrace_events+0x220/0x220 [ 46.196489][ T3608] ? ktime_get_coarse_real_ts64+0x45/0x140 [ 46.202279][ T3608] ? lockdep_hardirqs_on+0x8d/0x130 [ 46.207467][ T3608] journal_begin+0x14b/0x350 [ 46.212043][ T3608] reiserfs_dirty_inode+0x108/0x230 [ 46.217231][ T3608] ? reiserfs_free_inode+0x20/0x20 [ 46.222327][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 46.227942][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 46.233900][ T3608] ? current_time+0x1d7/0x300 [ 46.238562][ T3608] ? reiserfs_free_inode+0x20/0x20 [ 46.243664][ T3608] __mark_inode_dirty+0x1e7/0x600 [ 46.248671][ T3608] ? __might_fault+0xb2/0x110 [ 46.253346][ T3608] reiserfs_ioctl+0x293/0x340 [ 46.258003][ T3608] ? __se_sys_ioctl+0xf0/0x170 [ 46.262835][ T3608] ? reiserfs_unpack+0x390/0x390 [ 46.267752][ T3608] __se_sys_ioctl+0xfb/0x170 [ 46.272323][ T3608] do_syscall_64+0x3d/0xb0 [ 46.276719][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 46.282590][ T3608] RIP: 0033:0x7f51cf333159 [ 46.286983][ 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 [ 46.306573][ T3608] RSP: 002b:00007ffdbde874b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 46.314970][ T3608] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f51cf333159 ioctl(5, FS_IOC_SETVERSION, 0x20000080) = 0 exit_group(0) = ? +++ exited with 0 +++