./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor813059036 <...> Warning: Permanently added '10.128.10.17' (ECDSA) to the list of known hosts. execve("./syz-executor813059036", ["./syz-executor813059036"], 0x7ffcf9584960 /* 10 vars */) = 0 brk(NULL) = 0x555556400000 brk(0x555556400c40) = 0x555556400c40 arch_prctl(ARCH_SET_FS, 0x555556400300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor813059036", 4096) = 27 brk(0x555556421c40) = 0x555556421c40 brk(0x555556422000) = 0x555556422000 mprotect(0x7feb2f799000, 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) = 0x7feb272e0000 write(3, "\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\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\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288) = 524288 munmap(0x7feb272e0000, 524288) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file2", 0777) = 0 mount("/dev/loop0", "./file2", "hfsplus", MS_POSIXACL|MS_LAZYTIME, "") = 0 openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 chdir("./file2") = 0 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 openat(AT_FDCWD, "./file2", O_RDWR|O_CREAT|O_NOCTTY|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|FASYNC, 000) = 4 [ 51.832401][ T5067] loop0: detected capacity change from 0 to 1024 [ 51.852785][ T5067] hfsplus: xattr searching failed [ 51.860489][ T5067] hfsplus: xattr searching failed [ 51.866158][ T5067] [ 51.868498][ T5067] ============================================ [ 51.874644][ T5067] WARNING: possible recursive locking detected [ 51.880790][ T5067] 6.1.0-syzkaller-14594-g72a85e2b0a1e #0 Not tainted [ 51.887543][ T5067] -------------------------------------------- [ 51.893668][ T5067] syz-executor813/5067 is trying to acquire lock: [ 51.900053][ T5067] ffff8880764d1548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x3a3/0x1560 [ 51.910915][ T5067] [ 51.910915][ T5067] but task is already holding lock: [ 51.918260][ T5067] ffff8880764d2988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1af/0x19d0 [ 51.929282][ T5067] [ 51.929282][ T5067] other info that might help us debug this: [ 51.937321][ T5067] Possible unsafe locking scenario: [ 51.937321][ T5067] [ 51.944752][ T5067] CPU0 [ 51.948024][ T5067] ---- [ 51.951283][ T5067] lock(&HFSPLUS_I(inode)->extents_lock); [ 51.957074][ T5067] lock(&HFSPLUS_I(inode)->extents_lock); [ 51.962856][ T5067] [ 51.962856][ T5067] *** DEADLOCK *** [ 51.962856][ T5067] [ 51.971015][ T5067] May be due to missing lock nesting notation [ 51.971015][ T5067] [ 51.979315][ T5067] 4 locks held by syz-executor813/5067: [ 51.984837][ T5067] #0: ffff88802ba82460 (sb_writers#9){.+.+}-{0:0}, at: do_pwritev+0x1e9/0x350 [ 51.993781][ T5067] #1: ffff8880764d2b80 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: generic_file_write_iter+0x7f/0x310 [ 52.005158][ T5067] #2: ffff8880764d2988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1af/0x19d0 [ 52.016610][ T5067] #3: ffff88807d5288f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_allocate+0x9f/0x900 [ 52.026933][ T5067] [ 52.026933][ T5067] stack backtrace: [ 52.032798][ T5067] CPU: 1 PID: 5067 Comm: syz-executor813 Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0 [ 52.042839][ T5067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 52.052872][ T5067] Call Trace: [ 52.056139][ T5067] [ 52.059057][ T5067] dump_stack_lvl+0x1b1/0x290 [ 52.063730][ T5067] ? nf_tcp_handle_invalid+0x630/0x630 [ 52.069170][ T5067] ? panic+0x710/0x710 [ 52.073222][ T5067] ? lockdep_unlock+0x144/0x2e0 [ 52.078052][ T5067] ? print_tainted+0x141/0x160 [ 52.082799][ T5067] ? lockdep_print_held_locks+0x10f/0x1b0 [ 52.088497][ T5067] validate_chain+0x4843/0x6ae0 [ 52.093331][ T5067] ? stack_trace_save+0x104/0x1e0 [ 52.098336][ T5067] ? reacquire_held_locks+0x650/0x650 [ 52.103691][ T5067] ? check_noncircular+0x1aa/0x390 [ 52.108786][ T5067] ? add_chain_block+0x850/0x850 [ 52.113705][ T5067] ? lockdep_unlock+0x144/0x2e0 [ 52.118532][ T5067] ? lockdep_lock+0x290/0x290 [ 52.123185][ T5067] ? add_lock_to_list+0x1c7/0x2d0 [ 52.128191][ T5067] ? validate_chain+0x1478/0x6ae0 [ 52.133204][ T5067] ? reacquire_held_locks+0x650/0x650 [ 52.138560][ T5067] ? lockdep_unlock+0x144/0x2e0 [ 52.143391][ T5067] ? lockdep_lock+0x290/0x290 [ 52.148055][ T5067] ? add_lock_to_list+0x1c7/0x2d0 [ 52.153058][ T5067] ? validate_chain+0x1478/0x6ae0 [ 52.158067][ T5067] ? reacquire_held_locks+0x650/0x650 [ 52.163416][ T5067] ? reacquire_held_locks+0x650/0x650 [ 52.168771][ T5067] ? reacquire_held_locks+0x650/0x650 [ 52.174126][ T5067] ? reacquire_held_locks+0x650/0x650 [ 52.179478][ T5067] ? rcu_lock_release+0x5/0x20 [ 52.184224][ T5067] ? trace_lock_release+0x95/0x220 [ 52.189313][ T5067] ? rcu_lock_release+0x5/0x20 [ 52.194057][ T5067] ? lock_release+0x81/0x820 [ 52.198624][ T5067] ? read_lock_is_recursive+0x10/0x10 [ 52.203989][ T5067] ? deref_stack_reg+0x17a/0x210 [ 52.208917][ T5067] ? check_path+0x21/0x40 [ 52.213234][ T5067] ? __lock_acquire+0x1f60/0x1f60 [ 52.218248][ T5067] ? unwind_next_frame+0x1b06/0x24c0 [ 52.223516][ T5067] ? deref_stack_reg+0x17a/0x210 [ 52.228435][ T5067] ? stack_trace_save+0x1e0/0x1e0 [ 52.233441][ T5067] ? is_bpf_text_address+0x253/0x270 [ 52.238705][ T5067] ? validate_chain+0x177/0x6ae0 [ 52.243621][ T5067] ? unwind_get_return_address+0x48/0x80 [ 52.249239][ T5067] ? stack_trace_save+0x1e0/0x1e0 [ 52.254333][ T5067] ? rcu_read_lock_sched_held+0x87/0x110 [ 52.259945][ T5067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 52.265909][ T5067] ? rcu_lock_release+0x5/0x20 [ 52.270656][ T5067] ? trace_lock_release+0x95/0x220 [ 52.275757][ T5067] ? stack_trace_save+0x1e0/0x1e0 [ 52.280765][ T5067] ? rcu_read_lock_sched_held+0x87/0x110 [ 52.286379][ T5067] ? rcu_lock_release+0x5/0x20 [ 52.291161][ T5067] ? rcu_lock_release+0x5/0x20 [ 52.295905][ T5067] ? trace_lock_release+0x95/0x220 [ 52.301177][ T5067] ? reacquire_held_locks+0x650/0x650 [ 52.306527][ T5067] ? lock_release+0x81/0x820 [ 52.311094][ T5067] ? deref_stack_reg+0x17a/0x210 [ 52.316010][ T5067] ? __lock_acquire+0x1f60/0x1f60 [ 52.321017][ T5067] ? unwind_next_frame+0x1b06/0x24c0 [ 52.326280][ T5067] ? deref_stack_reg+0x17a/0x210 [ 52.331197][ T5067] ? stack_trace_save+0x1e0/0x1e0 [ 52.336203][ T5067] ? is_bpf_text_address+0x253/0x270 [ 52.341469][ T5067] ? stack_trace_save+0x1e0/0x1e0 [ 52.346476][ T5067] ? kernel_text_address+0x9e/0xd0 [ 52.351568][ T5067] ? __kernel_text_address+0x9/0x40 [ 52.356748][ T5067] ? unwind_get_return_address+0x48/0x80 [ 52.362359][ T5067] ? arch_stack_walk+0x98/0xe0 [ 52.367106][ T5067] ? stack_trace_save+0x1e0/0x1e0 [ 52.372115][ T5067] ? rcu_read_lock_sched_held+0x87/0x110 [ 52.377727][ T5067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 52.383686][ T5067] ? rcu_lock_release+0x5/0x20 [ 52.388432][ T5067] ? read_lock_is_recursive+0x10/0x10 [ 52.393802][ T5067] ? rcu_lock_release+0x5/0x20 [ 52.398564][ T5067] ? __lock_acquire+0x1f60/0x1f60 [ 52.403594][ T5067] ? deref_stack_reg+0x17a/0x210 [ 52.408524][ T5067] ? preempt_count_add+0x8d/0x180 [ 52.413543][ T5067] ? register_lock_class+0xc2/0x930 [ 52.418728][ T5067] ? is_bpf_text_address+0x253/0x270 [ 52.424001][ T5067] ? is_dynamic_key+0x1f0/0x1f0 [ 52.428835][ T5067] ? mark_lock+0x9a/0x350 [ 52.433146][ T5067] __lock_acquire+0x1292/0x1f60 [ 52.437983][ T5067] lock_acquire+0x182/0x3c0 [ 52.442467][ T5067] ? hfsplus_get_block+0x3a3/0x1560 [ 52.447647][ T5067] ? read_lock_is_recursive+0x10/0x10 [ 52.453071][ T5067] ? __might_sleep+0xc0/0xc0 [ 52.457648][ T5067] ? register_lock_class+0xc2/0x930 [ 52.462823][ T5067] ? create_page_buffers+0x1c8/0x4b0 [ 52.468091][ T5067] ? block_read_full_folio+0x177/0xfa0 [ 52.473529][ T5067] ? filemap_read_folio+0x187/0x7d0 [ 52.478708][ T5067] ? do_read_cache_folio+0x2d3/0x790 [ 52.483975][ T5067] ? read_cache_page+0x56/0x270 [ 52.488810][ T5067] ? hfsplus_file_extend+0x9d4/0x19d0 [ 52.494162][ T5067] ? hfsplus_get_block+0x415/0x1560 [ 52.499339][ T5067] ? is_dynamic_key+0x1f0/0x1f0 [ 52.504175][ T5067] ? hfsplus_write_begin+0x86/0xd0 [ 52.509267][ T5067] __mutex_lock_common+0x1bd/0x26e0 [ 52.514449][ T5067] ? hfsplus_get_block+0x3a3/0x1560 [ 52.519631][ T5067] ? __lock_acquire+0x1292/0x1f60 [ 52.524665][ T5067] ? hfsplus_get_block+0x3a3/0x1560 [ 52.529854][ T5067] ? mutex_lock_io_nested+0x60/0x60 [ 52.535043][ T5067] ? rcu_read_lock_sched_held+0x87/0x110 [ 52.540664][ T5067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 52.546633][ T5067] ? create_page_buffers+0x1c8/0x4b0 [ 52.551904][ T5067] ? trace_lock_release+0x95/0x220 [ 52.556999][ T5067] mutex_lock_nested+0x17/0x20 [ 52.561747][ T5067] hfsplus_get_block+0x3a3/0x1560 [ 52.566758][ T5067] ? __lock_acquire+0x1f60/0x1f60 [ 52.571768][ T5067] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 52.577468][ T5067] ? do_raw_spin_unlock+0x134/0x8a0 [ 52.582652][ T5067] ? create_page_buffers+0x244/0x4b0 [ 52.587918][ T5067] block_read_full_folio+0x3b3/0xfa0 [ 52.593190][ T5067] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 52.598893][ T5067] ? block_is_partially_uptodate+0x620/0x620 [ 52.604855][ T5067] ? folio_add_lru+0x480/0x960 [ 52.609607][ T5067] filemap_read_folio+0x187/0x7d0 [ 52.614628][ T5067] ? folio_alloc+0x47/0x50 [ 52.619028][ T5067] ? hfsplus_writepage+0x30/0x30 [ 52.623948][ T5067] ? maybe_unlock_mmap_for_io+0x130/0x130 [ 52.629652][ T5067] ? __mutex_lock_common+0x45f/0x26e0 [ 52.635106][ T5067] ? mutex_lock_io_nested+0x60/0x60 [ 52.640286][ T5067] do_read_cache_folio+0x2d3/0x790 [ 52.645387][ T5067] ? hfsplus_writepage+0x30/0x30 [ 52.650304][ T5067] read_cache_page+0x56/0x270 [ 52.654964][ T5067] hfsplus_block_allocate+0xf9/0x900 [ 52.660232][ T5067] ? __stack_depot_save+0x41c/0x4a0 [ 52.665425][ T5067] hfsplus_file_extend+0x9d4/0x19d0 [ 52.670607][ T5067] ? hfsplus_get_block+0x1560/0x1560 [ 52.675871][ T5067] ? mark_lock+0x9a/0x350 [ 52.680183][ T5067] ? rcu_read_lock_sched_held+0x87/0x110 [ 52.685796][ T5067] hfsplus_get_block+0x415/0x1560 [ 52.690802][ T5067] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 52.696499][ T5067] ? rcu_lock_release+0x5/0x20 [ 52.701245][ T5067] ? __might_sleep+0xc0/0xc0 [ 52.705816][ T5067] ? create_page_buffers+0x244/0x4b0 [ 52.711080][ T5067] __block_write_begin_int+0x54c/0x1a80 [ 52.716603][ T5067] ? folio_index+0xae/0x370 [ 52.721093][ T5067] ? kasan_set_track+0x52/0x60 [ 52.725839][ T5067] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 52.731537][ T5067] ? page_zero_new_buffers+0x940/0x940 [ 52.736975][ T5067] ? PageHeadHuge+0x8a/0x1d0 [ 52.741543][ T5067] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 52.747239][ T5067] block_write_begin+0x93/0x1e0 [ 52.752072][ T5067] ? cont_write_begin+0x5e5/0x860 [ 52.757076][ T5067] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 52.762777][ T5067] cont_write_begin+0x606/0x860 [ 52.767698][ T5067] ? generic_cont_expand_simple+0x250/0x250 [ 52.773572][ T5067] ? reacquire_held_locks+0x386/0x650 [ 52.778930][ T5067] hfsplus_write_begin+0x86/0xd0 [ 52.783850][ T5067] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 52.789550][ T5067] cont_write_begin+0x2cf/0x860 [ 52.794382][ T5067] ? generic_cont_expand_simple+0x250/0x250 [ 52.800344][ T5067] ? fault_in_readable+0x219/0x310 [ 52.805446][ T5067] ? fault_in_safe_writeable+0x240/0x240 [ 52.811064][ T5067] ? rcu_read_lock_sched_held+0x87/0x110 [ 52.816676][ T5067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 52.822636][ T5067] hfsplus_write_begin+0x86/0xd0 [ 52.827554][ T5067] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 52.833255][ T5067] generic_perform_write+0x2e4/0x5e0 [ 52.838524][ T5067] ? __mark_inode_dirty+0x593/0x600 [ 52.843702][ T5067] ? generic_file_direct_write+0x610/0x610 [ 52.849488][ T5067] ? __file_remove_privs+0x610/0x610 [ 52.854752][ T5067] ? generic_file_write_iter+0x97/0x310 [ 52.860279][ T5067] __generic_file_write_iter+0x176/0x400 [ 52.865892][ T5067] generic_file_write_iter+0xab/0x310 [ 52.871249][ T5067] do_iter_write+0x6c2/0xc20 [ 52.875822][ T5067] ? vfs_iter_write+0xa0/0xa0 [ 52.880477][ T5067] ? rcu_read_lock_any_held+0xb1/0x130 [ 52.885924][ T5067] do_pwritev+0x200/0x350 [ 52.890234][ T5067] ? do_preadv+0x330/0x330 [ 52.894631][ T5067] ? _raw_spin_unlock_irq+0x1f/0x40 [ 52.899813][ T5067] ? lockdep_hardirqs_on+0x8d/0x130 [ 52.905009][ T5067] ? _raw_spin_unlock_irq+0x2a/0x40 [ 52.910189][ T5067] ? ptrace_notify+0x245/0x340 [ 52.915020][ T5067] ? do_notify_parent+0xe00/0xe00 [ 52.920027][ T5067] ? syscall_enter_from_user_mode+0x2e/0x1d0 [ 52.925983][ T5067] ? __x64_sys_pwritev2+0xb9/0x100 [ 52.931075][ T5067] do_syscall_64+0x3d/0xb0 [ 52.935473][ T5067] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 52.941350][ T5067] RIP: 0033:0x7feb2f72c7c9 [ 52.945745][ T5067] 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 [ 52.965327][ T5067] RSP: 002b:00007ffcf4bcd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 [ 52.973718][ T5067] RAX: ffffffffffffffda RBX: 0032656c69662f2e RCX: 00007feb2f72c7c9 pwritev2(4, [{iov_base="\xff\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\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\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=2147479552}], 1, 21509, 0) = -1 ENOSPC (No space left on device) exit_group(0) = ? +++ exited with 0 +++ [ 52.981672][ T5067] RDX: 0000000000000001 RSI: 0000000020000100 RD