./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor512658784 <...> Warning: Permanently added '10.128.15.193' (ECDSA) to the list of known hosts. execve("./syz-executor512658784", ["./syz-executor512658784"], 0x7ffd0cbff700 /* 10 vars */) = 0 brk(NULL) = 0x5555556ba000 brk(0x5555556bac40) = 0x5555556bac40 arch_prctl(ARCH_SET_FS, 0x5555556ba300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor512658784", 4096) = 27 brk(0x5555556dbc40) = 0x5555556dbc40 brk(0x5555556dc000) = 0x5555556dc000 mprotect(0x7faaaec3d000, 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 [ 53.775990][ T3641] loop0: detected capacity change from 0 to 8192 [ 53.787314][ T3641] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 53.800607][ T3641] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 53.810094][ T3641] REISERFS (device loop0): using ordered data mode [ 53.816586][ T3641] 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), 0x20000080) = -1 EBADF (Bad file descriptor) [ 53.822816][ T3641] 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 [ 53.839776][ T3641] REISERFS (device loop0): checking transaction log (loop0) [ 53.849678][ T3641] REISERFS (device loop0): Using rupasov hash to sort names [ 53.858166][ T3641] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 53.879850][ T3641] [ 53.882211][ T3641] ====================================================== [ 53.889310][ T3641] WARNING: possible circular locking dependency detected [ 53.896322][ T3641] 6.1.0-rc5-syzkaller-00241-gab290eaddc4c #0 Not tainted [ 53.903752][ T3641] ------------------------------------------------------ [ 53.910747][ T3641] syz-executor512/3641 is trying to acquire lock: [ 53.917144][ T3641] ffffc90003c610f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x340/0x1070 [ 53.926873][ T3641] [ 53.926873][ T3641] but task is already holding lock: [ 53.934218][ T3641] ffff88802287c460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 53.943421][ T3641] [ 53.943421][ T3641] which lock already depends on the new lock. [ 53.943421][ T3641] [ 53.953799][ T3641] [ 53.953799][ T3641] the existing dependency chain (in reverse order) is: [ 53.962790][ T3641] [ 53.962790][ T3641] -> #2 (sb_writers#9){.+.+}-{0:0}: [ 53.970169][ T3641] lock_acquire+0x182/0x3c0 [ 53.975180][ T3641] sb_start_write+0x4d/0x1a0 [ 53.980278][ T3641] mnt_want_write_file+0x5a/0x1f0 [ 53.985805][ T3641] reiserfs_ioctl+0x16e/0x340 [ 53.990982][ T3641] __se_sys_ioctl+0xfb/0x170 [ 53.996072][ T3641] do_syscall_64+0x3d/0xb0 [ 54.001021][ T3641] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.007413][ T3641] [ 54.007413][ T3641] -> #1 (&sbi->lock){+.+.}-{3:3}: [ 54.014605][ T3641] lock_acquire+0x182/0x3c0 [ 54.019608][ T3641] __mutex_lock_common+0x1bd/0x26e0 [ 54.025309][ T3641] mutex_lock_nested+0x17/0x20 [ 54.030572][ T3641] reiserfs_write_lock_nested+0x5b/0xd0 [ 54.036621][ T3641] do_journal_begin_r+0x34b/0x1070 [ 54.042250][ T3641] journal_begin+0x14b/0x350 [ 54.047346][ T3641] reiserfs_fill_super+0x172b/0x24a0 [ 54.053131][ T3641] mount_bdev+0x26c/0x3a0 [ 54.057958][ T3641] legacy_get_tree+0xea/0x180 [ 54.063137][ T3641] vfs_get_tree+0x88/0x270 [ 54.068316][ T3641] do_new_mount+0x289/0xad0 [ 54.073318][ T3641] __se_sys_mount+0x2d3/0x3c0 [ 54.078493][ T3641] do_syscall_64+0x3d/0xb0 [ 54.083410][ T3641] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.089807][ T3641] [ 54.089807][ T3641] -> #0 (&journal->j_mutex){+.+.}-{3:3}: [ 54.097596][ T3641] validate_chain+0x1898/0x6ae0 [ 54.102947][ T3641] __lock_acquire+0x1292/0x1f60 [ 54.108298][ T3641] lock_acquire+0x182/0x3c0 [ 54.113301][ T3641] __mutex_lock_common+0x1bd/0x26e0 [ 54.119001][ T3641] mutex_lock_nested+0x17/0x20 [ 54.124266][ T3641] do_journal_begin_r+0x340/0x1070 [ 54.129877][ T3641] journal_begin+0x14b/0x350 [ 54.134963][ T3641] reiserfs_dirty_inode+0x108/0x230 [ 54.140669][ T3641] __mark_inode_dirty+0x1e7/0x600 [ 54.146192][ T3641] reiserfs_ioctl+0x293/0x340 [ 54.151372][ T3641] __se_sys_ioctl+0xfb/0x170 [ 54.156462][ T3641] do_syscall_64+0x3d/0xb0 [ 54.161377][ T3641] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.167770][ T3641] [ 54.167770][ T3641] other info that might help us debug this: [ 54.167770][ T3641] [ 54.177975][ T3641] Chain exists of: [ 54.177975][ T3641] &journal->j_mutex --> &sbi->lock --> sb_writers#9 [ 54.177975][ T3641] [ 54.190462][ T3641] Possible unsafe locking scenario: [ 54.190462][ T3641] [ 54.197885][ T3641] CPU0 CPU1 [ 54.203226][ T3641] ---- ---- [ 54.208567][ T3641] lock(sb_writers#9); [ 54.212708][ T3641] lock(&sbi->lock); [ 54.219215][ T3641] lock(sb_writers#9); [ 54.225887][ T3641] lock(&journal->j_mutex); [ 54.230460][ T3641] [ 54.230460][ T3641] *** DEADLOCK *** [ 54.230460][ T3641] [ 54.238604][ T3641] 1 lock held by syz-executor512/3641: [ 54.244039][ T3641] #0: ffff88802287c460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 54.253688][ T3641] [ 54.253688][ T3641] stack backtrace: [ 54.259556][ T3641] CPU: 1 PID: 3641 Comm: syz-executor512 Not tainted 6.1.0-rc5-syzkaller-00241-gab290eaddc4c #0 [ 54.269945][ T3641] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 54.279982][ T3641] Call Trace: [ 54.283247][ T3641] [ 54.286163][ T3641] dump_stack_lvl+0x1b1/0x28e [ 54.290827][ T3641] ? nf_tcp_handle_invalid+0x62e/0x62e [ 54.296269][ T3641] ? print_circular_bug+0x13e/0x1c0 [ 54.301448][ T3641] check_noncircular+0x2cc/0x390 [ 54.306369][ T3641] ? add_chain_block+0x850/0x850 [ 54.311285][ T3641] ? lockdep_lock+0x102/0x290 [ 54.315941][ T3641] ? _find_first_zero_bit+0xe8/0x110 [ 54.321207][ T3641] validate_chain+0x1898/0x6ae0 [ 54.326041][ T3641] ? reacquire_held_locks+0x650/0x650 [ 54.331395][ T3641] ? __kernel_text_address+0x9/0x40 [ 54.336577][ T3641] ? unwind_get_return_address+0x48/0x80 [ 54.342189][ T3641] ? arch_stack_walk+0x98/0xe0 [ 54.346934][ T3641] ? stack_trace_save+0x104/0x1e0 [ 54.351938][ T3641] ? stack_trace_snprint+0xf0/0xf0 [ 54.357029][ T3641] ? check_noncircular+0x1aa/0x390 [ 54.362136][ T3641] ? add_chain_block+0x850/0x850 [ 54.367060][ T3641] ? lockdep_unlock+0x144/0x2e0 [ 54.371889][ T3641] ? lockdep_lock+0x290/0x290 [ 54.376546][ T3641] ? add_lock_to_list+0x1c7/0x2d0 [ 54.381550][ T3641] ? validate_chain+0x1478/0x6ae0 [ 54.386561][ T3641] ? reacquire_held_locks+0x650/0x650 [ 54.391931][ T3641] ? lockdep_unlock+0x144/0x2e0 [ 54.396763][ T3641] ? lockdep_lock+0x290/0x290 [ 54.401420][ T3641] ? add_lock_to_list+0x1c7/0x2d0 [ 54.406426][ T3641] ? validate_chain+0x1478/0x6ae0 [ 54.411433][ T3641] ? reacquire_held_locks+0x650/0x650 [ 54.416789][ T3641] ? reacquire_held_locks+0x650/0x650 [ 54.422141][ T3641] ? is_bpf_text_address+0x253/0x270 [ 54.427502][ T3641] ? stack_trace_save+0x1e0/0x1e0 [ 54.432538][ T3641] ? __kernel_text_address+0x9/0x40 [ 54.437728][ T3641] ? unwind_get_return_address+0x48/0x80 [ 54.443346][ T3641] ? arch_stack_walk+0x98/0xe0 [ 54.448105][ T3641] ? stack_trace_save+0x104/0x1e0 [ 54.453129][ T3641] ? stack_trace_snprint+0xf0/0xf0 [ 54.458226][ T3641] ? lockdep_unlock+0x144/0x2e0 [ 54.463069][ T3641] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.468691][ T3641] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.474670][ T3641] ? stack_trace_save+0x1e0/0x1e0 [ 54.479685][ T3641] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.485300][ T3641] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.491275][ T3641] ? rcu_lock_release+0x5/0x20 [ 54.496042][ T3641] ? read_lock_is_recursive+0x10/0x10 [ 54.501409][ T3641] ? rcu_lock_release+0x5/0x20 [ 54.506160][ T3641] ? __lock_acquire+0x1f60/0x1f60 [ 54.511167][ T3641] ? deref_stack_reg+0x17a/0x210 [ 54.516090][ T3641] ? preempt_count_add+0x8d/0x180 [ 54.521119][ T3641] ? stack_trace_save+0x1e0/0x1e0 [ 54.526136][ T3641] ? is_bpf_text_address+0x253/0x270 [ 54.531401][ T3641] ? stack_trace_save+0x1e0/0x1e0 [ 54.536410][ T3641] ? stack_trace_save+0x1e0/0x1e0 [ 54.541416][ T3641] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.547215][ T3641] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.553189][ T3641] ? rcu_lock_release+0x5/0x20 [ 54.557951][ T3641] ? read_lock_is_recursive+0x10/0x10 [ 54.563317][ T3641] ? rcu_lock_release+0x5/0x20 [ 54.568066][ T3641] ? __lock_acquire+0x1f60/0x1f60 [ 54.573076][ T3641] ? deref_stack_reg+0x17a/0x210 [ 54.578003][ T3641] ? stack_trace_save+0x1e0/0x1e0 [ 54.583016][ T3641] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.588633][ T3641] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.594596][ T3641] ? rcu_lock_release+0x5/0x20 [ 54.599351][ T3641] ? read_lock_is_recursive+0x10/0x10 [ 54.604705][ T3641] ? rcu_lock_release+0x5/0x20 [ 54.609452][ T3641] ? __lock_acquire+0x1f60/0x1f60 [ 54.614457][ T3641] ? deref_stack_reg+0x17a/0x210 [ 54.619389][ T3641] ? mark_lock+0x9a/0x350 [ 54.623713][ T3641] ? __lock_acquire+0x1292/0x1f60 [ 54.628724][ T3641] ? mark_lock+0x9a/0x350 [ 54.633042][ T3641] __lock_acquire+0x1292/0x1f60 [ 54.637882][ T3641] lock_acquire+0x182/0x3c0 [ 54.642366][ T3641] ? do_journal_begin_r+0x340/0x1070 [ 54.647636][ T3641] ? read_lock_is_recursive+0x10/0x10 [ 54.652988][ T3641] ? __might_sleep+0xc0/0xc0 [ 54.657563][ T3641] ? reiserfs_write_unlock_nested+0xd0/0x120 [ 54.663525][ T3641] ? __lock_acquire+0x1f60/0x1f60 [ 54.668530][ T3641] __mutex_lock_common+0x1bd/0x26e0 [ 54.673712][ T3641] ? do_journal_begin_r+0x340/0x1070 [ 54.678989][ T3641] ? __mutex_unlock_slowpath+0x222/0x770 [ 54.684604][ T3641] ? do_journal_begin_r+0x340/0x1070 [ 54.689876][ T3641] ? mutex_unlock+0x10/0x10 [ 54.694378][ T3641] ? mutex_lock_io_nested+0x60/0x60 [ 54.699563][ T3641] mutex_lock_nested+0x17/0x20 [ 54.704311][ T3641] do_journal_begin_r+0x340/0x1070 [ 54.709406][ T3641] ? journal_join_abort+0xe0/0xe0 [ 54.714411][ T3641] ? print_irqtrace_events+0x220/0x220 [ 54.719852][ T3641] ? ktime_get_coarse_real_ts64+0x45/0x140 [ 54.725641][ T3641] ? lockdep_hardirqs_on+0x8d/0x130 [ 54.730825][ T3641] journal_begin+0x14b/0x350 [ 54.735394][ T3641] reiserfs_dirty_inode+0x108/0x230 [ 54.740578][ T3641] ? reiserfs_free_inode+0x20/0x20 [ 54.745670][ T3641] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.751282][ T3641] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.757241][ T3641] ? current_time+0x1d7/0x300 [ 54.761899][ T3641] ? reiserfs_free_inode+0x20/0x20 [ 54.766991][ T3641] __mark_inode_dirty+0x1e7/0x600 [ 54.771997][ T3641] ? __might_fault+0xb2/0x110 [ 54.776742][ T3641] reiserfs_ioctl+0x293/0x340 [ 54.781399][ T3641] ? __se_sys_ioctl+0xf0/0x170 [ 54.786142][ T3641] ? reiserfs_unpack+0x390/0x390 [ 54.791059][ T3641] __se_sys_ioctl+0xfb/0x170 [ 54.795637][ T3641] do_syscall_64+0x3d/0xb0 [ 54.800035][ T3641] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.805906][ T3641] RIP: 0033:0x7faaaebd11c9 [ 54.810299][ T3641] 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 +++ [ 54.829883][ T3641] RSP: 002b:00007ffe0166a3a8