./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1457924291 <...> Warning: Permanently added '10.128.1.140' (ECDSA) to the list of known hosts. execve("./syz-executor1457924291", ["./syz-executor1457924291"], 0x7ffda9907fa0 /* 10 vars */) = 0 brk(NULL) = 0x555555833000 brk(0x555555833c40) = 0x555555833c40 arch_prctl(ARCH_SET_FS, 0x555555833300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1457924291", 4096) = 28 brk(0x555555854c40) = 0x555555854c40 brk(0x555555855000) = 0x555555855000 mprotect(0x7f84c75e7000, 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 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f84bf10e000 write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x04\x00\x00\x00\x8f\x24\x2d\x5f\x49\x6d\x50\x0b\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 munmap(0x7f84bf10e000, 2097152) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 mount("/dev/loop0", "./file0", "ntfs3", 0, "discard,gid=0x0000000000000000,force,sparse,iocharset=cp855,gid=0x000000000000ee01,noacsrules,") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 [ 54.281535][ T3632] loop0: detected capacity change from 0 to 4096 creat("./bus", 000) = 4 ftruncate(4, 32768) = 0 open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|O_CLOEXEC|FASYNC, 000) = 5 mmap(0x20001000, 40960, PROT_WRITE|PROT_EXEC|0x800000, MAP_SHARED|MAP_FIXED, 5, 0) = 0x20001000 open("./file0", O_RDONLY) = 6 [ 54.335691][ T3632] [ 54.338053][ T3632] ====================================================== [ 54.345062][ T3632] WARNING: possible circular locking dependency detected [ 54.352079][ T3632] 6.1.0-rc8-syzkaller-00035-gf3e8416619ce #0 Not tainted [ 54.359079][ T3632] ------------------------------------------------------ [ 54.366078][ T3632] syz-executor145/3632 is trying to acquire lock: [ 54.372478][ T3632] ffff88801981bb58 (&mm->mmap_lock#2){++++}-{3:3}, at: __might_fault+0x8f/0x110 [ 54.381510][ T3632] [ 54.381510][ T3632] but task is already holding lock: [ 54.388896][ T3632] ffff88807288d220 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_fiemap+0x101/0x180 [ 54.397837][ T3632] [ 54.397837][ T3632] which lock already depends on the new lock. [ 54.397837][ T3632] [ 54.408214][ T3632] [ 54.408214][ T3632] the existing dependency chain (in reverse order) is: [ 54.417201][ T3632] [ 54.417201][ T3632] -> #1 (&ni->ni_lock/4){+.+.}-{3:3}: [ 54.424730][ T3632] lock_acquire+0x182/0x3c0 [ 54.429733][ T3632] __mutex_lock_common+0x1bd/0x26e0 [ 54.435442][ T3632] mutex_lock_nested+0x17/0x20 [ 54.440706][ T3632] attr_data_get_block+0x301/0x2370 [ 54.446410][ T3632] ntfs_file_mmap+0x48c/0x730 [ 54.451592][ T3632] mmap_region+0xfe6/0x1e20 [ 54.456599][ T3632] do_mmap+0x8d9/0xf30 [ 54.461183][ T3632] vm_mmap_pgoff+0x19e/0x2b0 [ 54.466280][ T3632] ksys_mmap_pgoff+0x48c/0x6d0 [ 54.471549][ T3632] do_syscall_64+0x3d/0xb0 [ 54.476465][ T3632] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.482862][ T3632] [ 54.482862][ T3632] -> #0 (&mm->mmap_lock#2){++++}-{3:3}: [ 54.490574][ T3632] validate_chain+0x1898/0x6ae0 [ 54.495931][ T3632] __lock_acquire+0x1292/0x1f60 [ 54.501283][ T3632] lock_acquire+0x182/0x3c0 [ 54.506291][ T3632] __might_fault+0xb2/0x110 [ 54.511301][ T3632] _copy_to_user+0x26/0x130 [ 54.516308][ T3632] fiemap_fill_next_extent+0x22e/0x410 [ 54.522275][ T3632] ni_fiemap+0xf57/0x1130 [ 54.527107][ T3632] ntfs_fiemap+0x134/0x180 [ 54.532033][ T3632] do_vfs_ioctl+0x187f/0x29a0 [ 54.537212][ T3632] __se_sys_ioctl+0x83/0x170 [ 54.542306][ T3632] do_syscall_64+0x3d/0xb0 [ 54.547227][ T3632] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.553623][ T3632] [ 54.553623][ T3632] other info that might help us debug this: [ 54.553623][ T3632] [ 54.563831][ T3632] Possible unsafe locking scenario: [ 54.563831][ T3632] [ 54.571258][ T3632] CPU0 CPU1 [ 54.576603][ T3632] ---- ---- [ 54.581947][ T3632] lock(&ni->ni_lock/4); [ 54.586349][ T3632] lock(&mm->mmap_lock#2); [ 54.593357][ T3632] lock(&ni->ni_lock/4); [ 54.600188][ T3632] lock(&mm->mmap_lock#2); [ 54.604676][ T3632] [ 54.604676][ T3632] *** DEADLOCK *** [ 54.604676][ T3632] [ 54.612800][ T3632] 1 lock held by syz-executor145/3632: [ 54.618241][ T3632] #0: ffff88807288d220 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_fiemap+0x101/0x180 [ 54.627447][ T3632] [ 54.627447][ T3632] stack backtrace: [ 54.633315][ T3632] CPU: 0 PID: 3632 Comm: syz-executor145 Not tainted 6.1.0-rc8-syzkaller-00035-gf3e8416619ce #0 [ 54.643705][ T3632] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 54.653827][ T3632] Call Trace: [ 54.657093][ T3632] [ 54.660015][ T3632] dump_stack_lvl+0x1b1/0x28e [ 54.664676][ T3632] ? nf_tcp_handle_invalid+0x62e/0x62e [ 54.670122][ T3632] ? print_circular_bug+0x13e/0x1c0 [ 54.675306][ T3632] check_noncircular+0x2cc/0x390 [ 54.680228][ T3632] ? add_chain_block+0x850/0x850 [ 54.685161][ T3632] ? lockdep_lock+0x102/0x290 [ 54.689829][ T3632] ? lockdep_unlock+0x144/0x2e0 [ 54.694662][ T3632] ? validate_chain+0x177/0x6ae0 [ 54.699585][ T3632] ? _find_first_zero_bit+0xe8/0x110 [ 54.704960][ T3632] validate_chain+0x1898/0x6ae0 [ 54.709808][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.715164][ T3632] ? lockdep_unlock+0x144/0x2e0 [ 54.719999][ T3632] ? lockdep_lock+0x290/0x290 [ 54.724656][ T3632] ? validate_chain+0x177/0x6ae0 [ 54.729576][ T3632] ? _find_first_zero_bit+0xe8/0x110 [ 54.735025][ T3632] ? validate_chain+0x1478/0x6ae0 [ 54.740047][ T3632] ? validate_chain+0x177/0x6ae0 [ 54.744968][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.750330][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.755685][ T3632] ? validate_chain+0x177/0x6ae0 [ 54.760611][ T3632] ? validate_chain+0x177/0x6ae0 [ 54.765535][ T3632] ? validate_chain+0x177/0x6ae0 [ 54.770459][ T3632] ? validate_chain+0x177/0x6ae0 [ 54.775381][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.780742][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.786099][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.791461][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.796820][ T3632] ? validate_chain+0x177/0x6ae0 [ 54.801746][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.807107][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.812459][ T3632] ? validate_chain+0x177/0x6ae0 [ 54.817390][ T3632] ? validate_chain+0x177/0x6ae0 [ 54.822309][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.827666][ T3632] ? validate_chain+0x177/0x6ae0 [ 54.832588][ T3632] ? validate_chain+0x177/0x6ae0 [ 54.837511][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.842866][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.848228][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.853589][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.858946][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.864305][ T3632] ? lockdep_hardirqs_on_prepare+0x428/0x790 [ 54.870298][ T3632] ? reacquire_held_locks+0x650/0x650 [ 54.875653][ T3632] ? stack_trace_save+0x1e0/0x1e0 [ 54.880661][ T3632] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.886279][ T3632] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.892242][ T3632] ? rcu_lock_release+0x5/0x20 [ 54.896994][ T3632] ? read_lock_is_recursive+0x10/0x10 [ 54.902346][ T3632] ? rcu_lock_release+0x5/0x20 [ 54.907095][ T3632] ? __lock_acquire+0x1f60/0x1f60 [ 54.912103][ T3632] ? deref_stack_reg+0x17a/0x210 [ 54.917033][ T3632] ? preempt_count_add+0x8d/0x180 [ 54.922132][ T3632] ? stack_trace_save+0x1e0/0x1e0 [ 54.927139][ T3632] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.932757][ T3632] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.938720][ T3632] ? rcu_lock_release+0x5/0x20 [ 54.943470][ T3632] ? stack_trace_save+0x1e0/0x1e0 [ 54.948484][ T3632] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.954099][ T3632] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.960066][ T3632] ? rcu_lock_release+0x5/0x20 [ 54.964815][ T3632] ? read_lock_is_recursive+0x10/0x10 [ 54.970169][ T3632] ? rcu_lock_release+0x5/0x20 [ 54.974917][ T3632] ? __lock_acquire+0x1f60/0x1f60 [ 54.979926][ T3632] ? deref_stack_reg+0x17a/0x210 [ 54.984850][ T3632] ? preempt_count_add+0x8d/0x180 [ 54.989860][ T3632] ? stack_trace_save+0x1e0/0x1e0 [ 54.994873][ T3632] ? is_bpf_text_address+0x253/0x270 [ 55.000140][ T3632] ? stack_trace_save+0x1e0/0x1e0 [ 55.005164][ T3632] ? stack_trace_save+0x1e0/0x1e0 [ 55.010174][ T3632] ? rcu_read_lock_sched_held+0x87/0x110 [ 55.015967][ T3632] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 55.021936][ T3632] ? rcu_lock_release+0x5/0x20 [ 55.026702][ T3632] ? read_lock_is_recursive+0x10/0x10 [ 55.032060][ T3632] ? rcu_lock_release+0x5/0x20 [ 55.036809][ T3632] ? __lock_acquire+0x1f60/0x1f60 [ 55.041827][ T3632] ? deref_stack_reg+0x17a/0x210 [ 55.046755][ T3632] ? mark_lock+0x9a/0x350 [ 55.051069][ T3632] __lock_acquire+0x1292/0x1f60 [ 55.055909][ T3632] lock_acquire+0x182/0x3c0 [ 55.060483][ T3632] ? __might_fault+0x8f/0x110 [ 55.065146][ T3632] ? read_lock_is_recursive+0x10/0x10 [ 55.070501][ T3632] ? mark_lock+0x9a/0x350 [ 55.074815][ T3632] ? __might_sleep+0xc0/0xc0 [ 55.079388][ T3632] ? __lock_acquire+0x1292/0x1f60 [ 55.084400][ T3632] __might_fault+0xb2/0x110 [ 55.088883][ T3632] ? __might_fault+0x8f/0x110 [ 55.093543][ T3632] _copy_to_user+0x26/0x130 [ 55.098067][ T3632] fiemap_fill_next_extent+0x22e/0x410 [ 55.103528][ T3632] ? vfs_ioctl+0xb0/0xb0 [ 55.107767][ T3632] ? mark_lock+0x9a/0x350 [ 55.112115][ T3632] ? trace_contention_end+0x72/0x1d0 [ 55.117390][ T3632] ni_fiemap+0xf57/0x1130 [ 55.121725][ T3632] ? ntfs_fiemap+0x101/0x180 [ 55.126310][ T3632] ? ni_parse_reparse+0x680/0x680 [ 55.131337][ T3632] ? __might_sleep+0xc0/0xc0 [ 55.135925][ T3632] ? fiemap_prep+0x196/0x230 [ 55.140515][ T3632] ntfs_fiemap+0x134/0x180 [ 55.144937][ T3632] ? ntfs_file_open+0x210/0x210 [ 55.149780][ T3632] ? __might_fault+0xb2/0x110 [ 55.154450][ T3632] ? ntfs_file_open+0x210/0x210 [ 55.159288][ T3632] do_vfs_ioctl+0x187f/0x29a0 [ 55.163966][ T3632] ? __x64_compat_sys_ioctl+0x80/0x80 [ 55.169329][ T3632] ? __lock_acquire+0x1f60/0x1f60 [ 55.174337][ T3632] ? slab_free_freelist_hook+0x12e/0x1a0 [ 55.179979][ T3632] ? tomoyo_path_number_perm+0x59e/0x760 [ 55.185610][ T3632] ? __kmem_cache_free+0x71/0x110 [ 55.190626][ T3632] ? tomoyo_path_number_perm+0x607/0x760 [ 55.196263][ T3632] ? tomoyo_check_path_acl+0x1c0/0x1c0 [ 55.201728][ T3632] ? _raw_spin_lock_irqsave+0x100/0x100 [ 55.207287][ T3632] ? bpf_lsm_file_ioctl+0x5/0x10 [ 55.212216][ T3632] ? security_file_ioctl+0x9d/0xb0 [ 55.217319][ T3632] __se_sys_ioctl+0x83/0x170 [ 55.221912][ T3632] do_syscall_64+0x3d/0xb0 [ 55.226339][ T3632] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 55.232315][ T3632] RIP: 0033:0x7f84c755aca9 [ 55.236720][ T3632] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 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 [ 55.256315][ T3632] RSP: 002b:00007ffdcb203e18 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 55.264716][ T3632] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f84c755aca9 [ 55.272670][ T3632] RDX: 0000000020000040 RSI: 00000000c020660b RDI: 0000000000000006 [ 55.280624][ T3632] RBP: 00007f84c751a2b0 R08: 0000000000000000 R09: 0000000000000000 ioctl(6, FS_IOC_FIEMAP, {fm_start=0, fm_length=32768, fm_flags=0, fm_extent_count=1} => {fm_flags=0, fm_mapped_extents=1, ...}) = 1 exit_group(0) = ? +++ exited with 0 +++ [ 55.288579][