./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1819107837 <...> Warning: Permanently added '10.128.0.27' (ECDSA) to the list of known hosts. execve("./syz-executor1819107837", ["./syz-executor1819107837"], 0x7ffe833e4680 /* 10 vars */) = 0 brk(NULL) = 0x55555565f000 brk(0x55555565fc40) = 0x55555565fc40 arch_prctl(ARCH_SET_FS, 0x55555565f300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1819107837", 4096) = 28 brk(0x555555680c40) = 0x555555680c40 brk(0x555555681000) = 0x555555681000 mprotect(0x7f4fcb686000, 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) = 0x7f4fc31cc000 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(0x7f4fc31cc000, 524288) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", 0777) = 0 syzkaller login: [ 56.259634][ T5067] loop0: detected capacity change from 0 to 1024 [ 56.277656][ T5067] [ 56.280003][ T5067] ============================================ [ 56.286131][ T5067] WARNING: possible recursive locking detected [ 56.292261][ T5067] 6.1.0-syzkaller-13822-g6feb57c2fd7c #0 Not tainted [ 56.298906][ T5067] -------------------------------------------- [ 56.305031][ T5067] syz-executor181/5067 is trying to acquire lock: [ 56.311416][ T5067] ffff888028148108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x3a3/0x1560 [ 56.322282][ T5067] [ 56.322282][ T5067] but task is already holding lock: [ 56.329624][ T5067] ffff88802acc07c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1af/0x19d0 [ 56.340638][ T5067] [ 56.340638][ T5067] other info that might help us debug this: [ 56.348682][ T5067] Possible unsafe locking scenario: [ 56.348682][ T5067] [ 56.356122][ T5067] CPU0 [ 56.359381][ T5067] ---- [ 56.362639][ T5067] lock(&HFSPLUS_I(inode)->extents_lock); [ 56.368424][ T5067] lock(&HFSPLUS_I(inode)->extents_lock); [ 56.374206][ T5067] [ 56.374206][ T5067] *** DEADLOCK *** [ 56.374206][ T5067] [ 56.382326][ T5067] May be due to missing lock nesting notation [ 56.382326][ T5067] [ 56.390621][ T5067] 5 locks held by syz-executor181/5067: [ 56.396138][ T5067] #0: ffff888079e960e0 (&type->s_umount_key#41/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920 [ 56.406212][ T5067] #1: ffff88807d8a8198 (&sbi->vh_mutex){+.+.}-{3:3}, at: hfsplus_fill_super+0x130b/0x1b50 [ 56.416186][ T5067] #2: ffff888022d680b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_find_init+0x143/0x1b0 [ 56.426076][ T5067] #3: ffff88802acc07c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1af/0x19d0 [ 56.437548][ T5067] #4: ffff88807d8a80f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_allocate+0x9f/0x900 [ 56.447870][ T5067] [ 56.447870][ T5067] stack backtrace: [ 56.453735][ T5067] CPU: 0 PID: 5067 Comm: syz-executor181 Not tainted 6.1.0-syzkaller-13822-g6feb57c2fd7c #0 [ 56.463771][ T5067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 56.473816][ T5067] Call Trace: [ 56.477077][ T5067] [ 56.479995][ T5067] dump_stack_lvl+0x1b1/0x290 [ 56.484678][ T5067] ? nf_tcp_handle_invalid+0x630/0x630 [ 56.490193][ T5067] ? panic+0x710/0x710 [ 56.494272][ T5067] ? lockdep_unlock+0x144/0x2e0 [ 56.499121][ T5067] ? print_tainted+0x141/0x160 [ 56.503879][ T5067] ? lockdep_print_held_locks+0x10f/0x1b0 [ 56.509587][ T5067] validate_chain+0x4843/0x6ae0 [ 56.514425][ T5067] ? stack_trace_save+0x1e0/0x1e0 [ 56.519432][ T5067] ? rcu_lock_release+0x5/0x20 [ 56.524177][ T5067] ? reacquire_held_locks+0x650/0x650 [ 56.529530][ T5067] ? rcu_lock_release+0x5/0x20 [ 56.534275][ T5067] ? lock_release+0x81/0x820 [ 56.538871][ T5067] ? validate_chain+0x177/0x6ae0 [ 56.543809][ T5067] ? reacquire_held_locks+0x650/0x650 [ 56.549175][ T5067] ? deref_stack_reg+0x17a/0x210 [ 56.554100][ T5067] ? validate_chain+0x177/0x6ae0 [ 56.559019][ T5067] ? reacquire_held_locks+0x650/0x650 [ 56.564373][ T5067] ? validate_chain+0x177/0x6ae0 [ 56.569292][ T5067] ? validate_chain+0x177/0x6ae0 [ 56.574212][ T5067] ? hlock_conflict+0x54/0x1f0 [ 56.578956][ T5067] ? reacquire_held_locks+0x650/0x650 [ 56.585090][ T5067] ? reacquire_held_locks+0x650/0x650 [ 56.590446][ T5067] ? reacquire_held_locks+0x650/0x650 [ 56.595844][ T5067] ? stack_trace_save+0x104/0x1e0 [ 56.600853][ T5067] ? stack_trace_snprint+0xf0/0xf0 [ 56.605974][ T5067] ? reacquire_held_locks+0x650/0x650 [ 56.611326][ T5067] ? check_noncircular+0x1aa/0x390 [ 56.616417][ T5067] ? validate_chain+0x177/0x6ae0 [ 56.621334][ T5067] ? validate_chain+0x177/0x6ae0 [ 56.626255][ T5067] ? lockdep_unlock+0x144/0x2e0 [ 56.631084][ T5067] ? lockdep_lock+0x290/0x290 [ 56.635743][ T5067] ? validate_chain+0x1478/0x6ae0 [ 56.640750][ T5067] ? reacquire_held_locks+0x650/0x650 [ 56.646190][ T5067] ? _find_first_zero_bit+0xe8/0x110 [ 56.651460][ T5067] ? reacquire_held_locks+0x650/0x650 [ 56.656811][ T5067] ? validate_chain+0x1478/0x6ae0 [ 56.661820][ T5067] ? reacquire_held_locks+0x650/0x650 [ 56.667173][ T5067] ? check_noncircular+0x1aa/0x390 [ 56.672268][ T5067] ? reacquire_held_locks+0x650/0x650 [ 56.677624][ T5067] ? lockdep_unlock+0x144/0x2e0 [ 56.682466][ T5067] ? lockdep_lock+0x290/0x290 [ 56.687143][ T5067] ? add_lock_to_list+0x1c7/0x2d0 [ 56.692182][ T5067] ? validate_chain+0x1478/0x6ae0 [ 56.697211][ T5067] ? stack_trace_save+0x1e0/0x1e0 [ 56.702221][ T5067] ? rcu_read_lock_sched_held+0x87/0x110 [ 56.707837][ T5067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 56.713797][ T5067] ? rcu_lock_release+0x5/0x20 [ 56.718544][ T5067] ? trace_lock_release+0x95/0x220 [ 56.723640][ T5067] ? __bitmap_and+0x2f0/0x310 [ 56.728300][ T5067] ? update_cfs_rq_load_avg+0x483/0x570 [ 56.733843][ T5067] ? load_balance+0x824/0x6e40 [ 56.738627][ T5067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 56.744594][ T5067] ? stack_trace_save+0x1e0/0x1e0 [ 56.749629][ T5067] ? stack_trace_save+0x1e0/0x1e0 [ 56.754645][ T5067] ? rcu_read_lock_sched_held+0x87/0x110 [ 56.760365][ T5067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 56.766337][ T5067] ? rcu_lock_release+0x5/0x20 [ 56.771084][ T5067] ? read_lock_is_recursive+0x10/0x10 [ 56.776537][ T5067] ? rcu_lock_release+0x5/0x20 [ 56.781293][ T5067] ? __lock_acquire+0x1f60/0x1f60 [ 56.786299][ T5067] ? deref_stack_reg+0x17a/0x210 [ 56.791222][ T5067] ? preempt_count_add+0x8d/0x180 [ 56.796230][ T5067] ? register_lock_class+0xc2/0x930 [ 56.801408][ T5067] ? is_bpf_text_address+0x253/0x270 [ 56.806673][ T5067] ? is_dynamic_key+0x1f0/0x1f0 [ 56.811516][ T5067] ? mark_lock+0x9a/0x350 [ 56.815827][ T5067] __lock_acquire+0x1292/0x1f60 [ 56.820664][ T5067] lock_acquire+0x182/0x3c0 [ 56.825160][ T5067] ? hfsplus_get_block+0x3a3/0x1560 [ 56.830341][ T5067] ? read_lock_is_recursive+0x10/0x10 [ 56.835693][ T5067] ? kasan_set_track+0x3d/0x60 [ 56.840439][ T5067] ? __kasan_slab_alloc+0x65/0x70 [ 56.845466][ T5067] ? __might_sleep+0xc0/0xc0 [ 56.850035][ T5067] ? create_empty_buffers+0x36/0xe30 [ 56.855302][ T5067] ? create_page_buffers+0x1c8/0x4b0 [ 56.860570][ T5067] ? block_read_full_folio+0x177/0xfa0 [ 56.866025][ T5067] ? filemap_read_folio+0x187/0x7d0 [ 56.871209][ T5067] ? do_read_cache_folio+0x2d3/0x790 [ 56.876484][ T5067] ? read_cache_page+0x56/0x270 [ 56.881323][ T5067] ? hfsplus_block_allocate+0x679/0x900 [ 56.886851][ T5067] ? hfsplus_file_extend+0x9d4/0x19d0 [ 56.892204][ T5067] ? hfsplus_bmap_reserve+0x123/0x500 [ 56.897571][ T5067] ? hfsplus_fill_super+0x1379/0x1b50 [ 56.902923][ T5067] ? mount_bdev+0x26c/0x3a0 [ 56.907407][ T5067] ? legacy_get_tree+0xea/0x180 [ 56.912243][ T5067] __mutex_lock_common+0x1bd/0x26e0 [ 56.917424][ T5067] ? hfsplus_get_block+0x3a3/0x1560 [ 56.922622][ T5067] ? __lock_acquire+0x1292/0x1f60 [ 56.927730][ T5067] ? hfsplus_get_block+0x3a3/0x1560 [ 56.932930][ T5067] ? mutex_lock_io_nested+0x60/0x60 [ 56.938292][ T5067] ? rcu_read_lock_sched_held+0x87/0x110 [ 56.943909][ T5067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 56.949966][ T5067] ? create_page_buffers+0x1c8/0x4b0 [ 56.955234][ T5067] ? trace_lock_release+0x95/0x220 [ 56.960326][ T5067] mutex_lock_nested+0x17/0x20 [ 56.965071][ T5067] hfsplus_get_block+0x3a3/0x1560 [ 56.970080][ T5067] ? __lock_acquire+0x1f60/0x1f60 [ 56.975087][ T5067] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 56.980784][ T5067] ? do_raw_spin_unlock+0x134/0x8a0 [ 56.985969][ T5067] ? create_page_buffers+0x244/0x4b0 [ 56.991239][ T5067] block_read_full_folio+0x3b3/0xfa0 [ 56.996508][ T5067] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 57.002226][ T5067] ? block_is_partially_uptodate+0x620/0x620 [ 57.008192][ T5067] ? folio_add_lru+0x480/0x960 [ 57.012943][ T5067] filemap_read_folio+0x187/0x7d0 [ 57.017953][ T5067] ? folio_alloc+0x47/0x50 [ 57.022352][ T5067] ? hfsplus_writepage+0x30/0x30 [ 57.027277][ T5067] ? maybe_unlock_mmap_for_io+0x130/0x130 [ 57.033084][ T5067] ? do_raw_spin_unlock+0x134/0x8a0 [ 57.038265][ T5067] do_read_cache_folio+0x2d3/0x790 [ 57.043362][ T5067] ? hfsplus_writepage+0x30/0x30 [ 57.048287][ T5067] read_cache_page+0x56/0x270 [ 57.052949][ T5067] hfsplus_block_allocate+0x679/0x900 [ 57.058325][ T5067] hfsplus_file_extend+0x9d4/0x19d0 [ 57.063505][ T5067] ? hfsplus_get_block+0x1560/0x1560 [ 57.068767][ T5067] ? __mutex_lock_common+0x45f/0x26e0 [ 57.074174][ T5067] ? hfsplus_find_init+0x143/0x1b0 [ 57.079269][ T5067] ? rcu_read_lock_sched_held+0x87/0x110 [ 57.084893][ T5067] ? mutex_lock_io_nested+0x60/0x60 [ 57.090074][ T5067] ? __kmem_cache_alloc_node+0x21a/0x340 [ 57.095693][ T5067] hfsplus_bmap_reserve+0x123/0x500 [ 57.100878][ T5067] hfsplus_create_cat+0x178/0xa20 [ 57.105892][ T5067] ? do_raw_spin_lock+0x147/0x3a0 [ 57.110897][ T5067] ? hfsplus_find_cat+0x6d0/0x6d0 [ 57.115924][ T5067] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 57.121800][ T5067] ? enqueue_timer+0x1c2/0x3c0 [ 57.126554][ T5067] ? rcu_read_lock_sched_held+0x87/0x110 [ 57.132172][ T5067] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 57.138135][ T5067] ? lockdep_hardirqs_on_prepare+0x428/0x790 [ 57.144208][ T5067] ? hfsplus_new_inode+0x68b/0x880 [ 57.149300][ T5067] ? trace_lock_release+0x95/0x220 [ 57.154402][ T5067] ? hfsplus_new_inode+0x68b/0x880 [ 57.159517][ T5067] ? __lock_acquire+0x1f60/0x1f60 [ 57.164522][ T5067] ? do_raw_spin_unlock+0x134/0x8a0 [ 57.169702][ T5067] ? _raw_spin_unlock+0x24/0x40 [ 57.174538][ T5067] hfsplus_fill_super+0x1379/0x1b50 [ 57.179718][ T5067] ? __lock_acquire+0x1292/0x1f60 [ 57.184730][ T5067] ? hfsplus_mount+0x40/0x40 [ 57.189321][ T5067] ? bdev_name+0x2ce/0x3f0 [ 57.193720][ T5067] ? pointer+0x14a/0xfa0 [ 57.197942][ T5067] ? string+0x2d0/0x2d0 [ 57.202080][ T5067] ? vsnprintf+0x1cb0/0x1cb0 [ 57.206653][ T5067] ? vsnprintf+0x1bd8/0x1cb0 [ 57.211224][ T5067] ? ptr_to_hashval+0x70/0x70 [ 57.215883][ T5067] ? snprintf+0xc0/0x110 [ 57.220106][ T5067] ? vscnprintf+0x80/0x80 [ 57.224420][ T5067] ? sb_set_blocksize+0x95/0xf0 [ 57.229251][ T5067] mount_bdev+0x26c/0x3a0 [ 57.233566][ T5067] ? hfsplus_mount+0x40/0x40 [ 57.238137][ T5067] legacy_get_tree+0xea/0x180 [ 57.242806][ T5067] ? hfsplus_mark_mdb_dirty+0x1b0/0x1b0 [ 57.248330][ T5067] vfs_get_tree+0x88/0x270 [ 57.252726][ T5067] do_new_mount+0x289/0xad0 [ 57.257211][ T5067] ? do_move_mount_old+0x150/0x150 [ 57.262302][ T5067] ? user_path_at_empty+0x149/0x1a0 [ 57.267489][ T5067] __se_sys_mount+0x2d3/0x3c0 [ 57.272152][ T5067] ? __x64_sys_mount+0xc0/0xc0 [ 57.277006][ T5067] ? syscall_enter_from_user_mode+0x2e/0x1d0 [ 57.283007][ T5067] ? __x64_sys_mount+0x1c/0xc0 [ 57.287772][ T5067] do_syscall_64+0x3d/0xb0 [ 57.292179][ T5067] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 57.298060][ T5067] RIP: 0033:0x7f4fcb619e7a [ 57.302456][ T5067] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 57.322044][ T5067] RSP: 002b:00007fff73ebd6a8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 57.330440][ T5067] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4fcb619e7a [ 57.338394][ T5067] RDX: 0000000020000600 RSI: 00000000200000c0 RDI: 00007fff73ebd6c0 [ 57.346344][ T5067] RBP: 00007fff73ebd6c0 R08: 00007fff73ebd700 R09: 0000000000000618 [ 57.354295][ T5067] R10: 0000000002a14010 R11: 0000000000000286 R12: 0000000000000004 mount("/dev/loop0", "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", "hfsplus", MS_SYNCHRONOUS|MS_REC|MS_POSIXACL|MS_RELATIME|MS_I_VERSION|MS_LAZYTIME, "nodecompose,decompose,nodecompose,part=0x0000000000006045,") = -1 ENOSPC (No space left on device) ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 57.362243][ T5067] R13: 00