./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3618109938 <...> Warning: Permanently added '10.128.1.73' (ECDSA) to the list of known hosts. execve("./syz-executor3618109938", ["./syz-executor3618109938"], 0x7ffde15f3490 /* 10 vars */) = 0 brk(NULL) = 0x555555a55000 brk(0x555555a55c40) = 0x555555a55c40 arch_prctl(ARCH_SET_FS, 0x555555a55300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3618109938", 4096) = 28 brk(0x555555a76c40) = 0x555555a76c40 brk(0x555555a77000) = 0x555555a77000 mprotect(0x7fb39da60000, 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) = 0x7fb3955a7000 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(0x7fb3955a7000, 524288) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./bus", 0777) = 0 mount("/dev/loop0", "./bus", "hfsplus", MS_SYNCHRONOUS|MS_MANDLOCK, "") = 0 openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 chdir("./bus") = 0 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 [ 53.439658][ T5065] loop0: detected capacity change from 0 to 1024 [ 53.448878][ T5065] ======================================================= [ 53.448878][ T5065] WARNING: The mand mount option has been deprecated and [ 53.448878][ T5065] and is ignored by this kernel. Remove the mand [ 53.448878][ T5065] option from the mount to silence this warning. [ 53.448878][ T5065] ======================================================= [ 53.505302][ T5065] [ 53.507671][ T5065] ============================================ [ 53.513821][ T5065] WARNING: possible recursive locking detected [ 53.519964][ T5065] 6.1.0-syzkaller-13872-gb6bb9676f216 #0 Not tainted [ 53.526621][ T5065] -------------------------------------------- [ 53.532746][ T5065] syz-executor361/5065 is trying to acquire lock: [ 53.539133][ T5065] ffff888029e39548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x3a3/0x1560 [ 53.549987][ T5065] [ 53.549987][ T5065] but task is already holding lock: [ 53.557332][ T5065] ffff888029e3a988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x280/0xbb0 [ 53.568448][ T5065] [ 53.568448][ T5065] other info that might help us debug this: [ 53.576496][ T5065] Possible unsafe locking scenario: [ 53.576496][ T5065] [ 53.583936][ T5065] CPU0 [ 53.587192][ T5065] ---- [ 53.590450][ T5065] lock(&HFSPLUS_I(inode)->extents_lock); [ 53.596319][ T5065] lock(&HFSPLUS_I(inode)->extents_lock); [ 53.602101][ T5065] [ 53.602101][ T5065] *** DEADLOCK *** [ 53.602101][ T5065] [ 53.610329][ T5065] May be due to missing lock nesting notation [ 53.610329][ T5065] [ 53.618619][ T5065] 4 locks held by syz-executor361/5065: [ 53.624141][ T5065] #0: ffff88802ae16460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 [ 53.633252][ T5065] #1: ffff888029e3ab80 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: do_truncate+0x1ec/0x2f0 [ 53.643576][ T5065] #2: ffff888029e3a988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x280/0xbb0 [ 53.655120][ T5065] #3: ffff8880787368f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_free+0xb6/0x4e0 [ 53.665093][ T5065] [ 53.665093][ T5065] stack backtrace: [ 53.670957][ T5065] CPU: 0 PID: 5065 Comm: syz-executor361 Not tainted 6.1.0-syzkaller-13872-gb6bb9676f216 #0 [ 53.680992][ T5065] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 53.691021][ T5065] Call Trace: [ 53.694286][ T5065] [ 53.697198][ T5065] dump_stack_lvl+0x1b1/0x290 [ 53.701868][ T5065] ? nf_tcp_handle_invalid+0x630/0x630 [ 53.707308][ T5065] ? panic+0x710/0x710 [ 53.711377][ T5065] ? lockdep_unlock+0x144/0x2e0 [ 53.716205][ T5065] ? print_tainted+0x141/0x160 [ 53.720947][ T5065] ? lockdep_print_held_locks+0x10f/0x1b0 [ 53.726645][ T5065] validate_chain+0x4843/0x6ae0 [ 53.731489][ T5065] ? stack_trace_save+0x104/0x1e0 [ 53.736493][ T5065] ? reacquire_held_locks+0x650/0x650 [ 53.741843][ T5065] ? check_noncircular+0x1aa/0x390 [ 53.746933][ T5065] ? add_chain_block+0x850/0x850 [ 53.751851][ T5065] ? lockdep_unlock+0x144/0x2e0 [ 53.756679][ T5065] ? lockdep_lock+0x290/0x290 [ 53.761338][ T5065] ? add_lock_to_list+0x1c7/0x2d0 [ 53.766347][ T5065] ? validate_chain+0x1478/0x6ae0 [ 53.771357][ T5065] ? reacquire_held_locks+0x650/0x650 [ 53.776713][ T5065] ? lockdep_unlock+0x144/0x2e0 [ 53.781544][ T5065] ? lockdep_lock+0x290/0x290 [ 53.786199][ T5065] ? add_lock_to_list+0x1c7/0x2d0 [ 53.791204][ T5065] ? validate_chain+0x1478/0x6ae0 [ 53.796220][ T5065] ? reacquire_held_locks+0x650/0x650 [ 53.801571][ T5065] ? reacquire_held_locks+0x650/0x650 [ 53.806920][ T5065] ? reacquire_held_locks+0x650/0x650 [ 53.812273][ T5065] ? reacquire_held_locks+0x650/0x650 [ 53.817651][ T5065] ? reacquire_held_locks+0x650/0x650 [ 53.823001][ T5065] ? lockdep_unlock+0x144/0x2e0 [ 53.827831][ T5065] ? lockdep_lock+0x290/0x290 [ 53.832512][ T5065] ? add_lock_to_list+0x1c7/0x2d0 [ 53.837538][ T5065] ? validate_chain+0x1478/0x6ae0 [ 53.842548][ T5065] ? validate_chain+0x177/0x6ae0 [ 53.847480][ T5065] ? finish_lock_switch+0x89/0x100 [ 53.852582][ T5065] ? reacquire_held_locks+0x650/0x650 [ 53.857939][ T5065] ? reacquire_held_locks+0x650/0x650 [ 53.863299][ T5065] ? validate_chain+0x177/0x6ae0 [ 53.868220][ T5065] ? mark_lock+0x9a/0x350 [ 53.872543][ T5065] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.878152][ T5065] ? reacquire_held_locks+0x650/0x650 [ 53.883500][ T5065] ? mark_lock+0x9a/0x350 [ 53.887806][ T5065] ? __lock_acquire+0x1292/0x1f60 [ 53.892808][ T5065] ? rcu_preempt_deferred_qs_irqrestore+0x849/0xc10 [ 53.899373][ T5065] ? trace_lock_release+0x95/0x220 [ 53.904467][ T5065] ? lockdep_hardirqs_on_prepare+0x428/0x790 [ 53.910424][ T5065] ? print_irqtrace_events+0x220/0x220 [ 53.915861][ T5065] ? do_raw_spin_unlock+0x134/0x8a0 [ 53.921040][ T5065] ? _raw_spin_unlock_irqrestore+0x8b/0x120 [ 53.926928][ T5065] ? lockdep_hardirqs_on+0x8d/0x130 [ 53.932118][ T5065] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 53.938001][ T5065] ? _raw_spin_unlock+0x40/0x40 [ 53.942839][ T5065] ? rcu_preempt_deferred_qs_irqrestore+0x849/0xc10 [ 53.949411][ T5065] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.955026][ T5065] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.961001][ T5065] ? stack_trace_save+0x1e0/0x1e0 [ 53.966034][ T5065] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.971655][ T5065] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.977623][ T5065] ? rcu_lock_release+0x5/0x20 [ 53.982382][ T5065] ? read_lock_is_recursive+0x10/0x10 [ 53.987740][ T5065] ? rcu_lock_release+0x5/0x20 [ 53.992496][ T5065] ? __lock_acquire+0x1f60/0x1f60 [ 53.997514][ T5065] ? deref_stack_reg+0x17a/0x210 [ 54.002457][ T5065] ? preempt_count_add+0x8d/0x180 [ 54.007470][ T5065] ? register_lock_class+0xc2/0x930 [ 54.012653][ T5065] ? is_bpf_text_address+0x253/0x270 [ 54.017927][ T5065] ? is_dynamic_key+0x1f0/0x1f0 [ 54.022763][ T5065] ? mark_lock+0x9a/0x350 [ 54.027074][ T5065] __lock_acquire+0x1292/0x1f60 [ 54.031913][ T5065] lock_acquire+0x182/0x3c0 [ 54.036397][ T5065] ? hfsplus_get_block+0x3a3/0x1560 [ 54.041580][ T5065] ? read_lock_is_recursive+0x10/0x10 [ 54.046930][ T5065] ? __might_sleep+0xc0/0xc0 [ 54.051503][ T5065] ? register_lock_class+0xc2/0x930 [ 54.056680][ T5065] ? create_page_buffers+0x1c8/0x4b0 [ 54.061957][ T5065] ? block_read_full_folio+0x177/0xfa0 [ 54.067403][ T5065] ? filemap_read_folio+0x187/0x7d0 [ 54.072586][ T5065] ? do_read_cache_folio+0x2d3/0x790 [ 54.077857][ T5065] ? read_cache_page+0x56/0x270 [ 54.082699][ T5065] ? hfsplus_free_extents+0x17f/0xad0 [ 54.088055][ T5065] ? hfsplus_file_truncate+0x827/0xbb0 [ 54.093499][ T5065] ? is_dynamic_key+0x1f0/0x1f0 [ 54.098326][ T5065] ? path_openat+0x272b/0x2dd0 [ 54.103071][ T5065] __mutex_lock_common+0x1bd/0x26e0 [ 54.108250][ T5065] ? hfsplus_get_block+0x3a3/0x1560 [ 54.113431][ T5065] ? __lock_acquire+0x1292/0x1f60 [ 54.118438][ T5065] ? hfsplus_get_block+0x3a3/0x1560 [ 54.123626][ T5065] ? mutex_lock_io_nested+0x60/0x60 [ 54.128812][ T5065] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.134441][ T5065] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.140412][ T5065] ? create_page_buffers+0x1c8/0x4b0 [ 54.145712][ T5065] ? trace_lock_release+0x95/0x220 [ 54.150819][ T5065] mutex_lock_nested+0x17/0x20 [ 54.155572][ T5065] hfsplus_get_block+0x3a3/0x1560 [ 54.160584][ T5065] ? __lock_acquire+0x1f60/0x1f60 [ 54.165590][ T5065] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 54.171290][ T5065] ? do_raw_spin_unlock+0x134/0x8a0 [ 54.176481][ T5065] ? create_page_buffers+0x244/0x4b0 [ 54.181752][ T5065] block_read_full_folio+0x3b3/0xfa0 [ 54.187021][ T5065] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 54.192721][ T5065] ? block_is_partially_uptodate+0x620/0x620 [ 54.198687][ T5065] ? folio_add_lru+0x480/0x960 [ 54.203434][ T5065] filemap_read_folio+0x187/0x7d0 [ 54.208439][ T5065] ? folio_alloc+0x47/0x50 [ 54.212836][ T5065] ? hfsplus_writepage+0x30/0x30 [ 54.217753][ T5065] ? maybe_unlock_mmap_for_io+0x130/0x130 [ 54.223454][ T5065] ? __mutex_lock_common+0x45f/0x26e0 [ 54.228804][ T5065] ? mutex_lock_io_nested+0x60/0x60 [ 54.233978][ T5065] ? __mutex_lock_common+0x45f/0x26e0 [ 54.239328][ T5065] do_read_cache_folio+0x2d3/0x790 [ 54.244422][ T5065] ? hfsplus_writepage+0x30/0x30 [ 54.249350][ T5065] read_cache_page+0x56/0x270 [ 54.254037][ T5065] hfsplus_block_free+0x123/0x4e0 [ 54.259066][ T5065] ? trace_kmalloc+0x30/0xf0 [ 54.263652][ T5065] hfsplus_free_extents+0x17f/0xad0 [ 54.268852][ T5065] hfsplus_file_truncate+0x827/0xbb0 [ 54.274131][ T5065] ? unmap_mapping_range+0xf3/0x2a0 [ 54.279325][ T5065] ? hfsplus_add_extent+0x860/0x860 [ 54.284514][ T5065] ? unmap_mapping_range+0xf3/0x2a0 [ 54.289707][ T5065] ? unmap_mapping_pages+0x190/0x190 [ 54.294981][ T5065] ? current_time+0x1ea/0x300 [ 54.299652][ T5065] ? setattr_prepare+0x1fc/0xc10 [ 54.304581][ T5065] ? truncate_setsize+0xcb/0xf0 [ 54.309417][ T5065] hfsplus_setattr+0x1b8/0x280 [ 54.314171][ T5065] ? hfsplus_fileattr_set+0x330/0x330 [ 54.319543][ T5065] notify_change+0xe50/0x1100 [ 54.324225][ T5065] do_truncate+0x200/0x2f0 [ 54.328636][ T5065] ? put_page_bootmem+0x2d0/0x2d0 [ 54.333646][ T5065] ? ima_bprm_check+0x270/0x270 [ 54.338483][ T5065] path_openat+0x272b/0x2dd0 [ 54.343069][ T5065] ? do_filp_open+0x4f0/0x4f0 [ 54.347734][ T5065] do_filp_open+0x264/0x4f0 [ 54.352226][ T5065] ? vfs_tmpfile+0x490/0x490 [ 54.356798][ T5065] ? do_raw_spin_unlock+0x134/0x8a0 [ 54.361981][ T5065] ? _raw_spin_unlock+0x24/0x40 [ 54.366815][ T5065] ? alloc_fd+0x5a7/0x640 [ 54.371126][ T5065] do_sys_openat2+0x124/0x4e0 [ 54.375782][ T5065] ? do_raw_spin_unlock+0x134/0x8a0 [ 54.380966][ T5065] ? do_sys_open+0x220/0x220 [ 54.385532][ T5065] ? _raw_spin_unlock_irq+0x2a/0x40 [ 54.390711][ T5065] ? ptrace_notify+0x245/0x340 [ 54.395462][ T5065] __x64_sys_creat+0x11f/0x160 [ 54.400208][ T5065] ? __x64_compat_sys_openat+0x290/0x290 [ 54.405855][ T5065] ? syscall_enter_from_user_mode+0x2e/0x1d0 [ 54.411814][ T5065] ? syscall_enter_from_user_mode+0x86/0x1d0 [ 54.417773][ T5065] do_syscall_64+0x3d/0xb0 [ 54.422195][ T5065] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.428067][ T5065] RIP: 0033:0x7fb39d9f3759 [ 54.432458][ T5065] 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 [ 54.452059][ T5065] RSP: 002b:00007ffe211f2388 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 54.460464][ T5065] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb39d9f3759 [ 54.468419][ T5065] RDX: 00007fb39d9b1dd3 RSI: 0000000000000000 RDI: 0000000020000300 [ 54.476372][ T5065] RBP: 00007fb39d9b2ff0 R08: 0000000000000604 R09: 0000000000000000 [ 54.484326][ T5065] R10: 00007ffe211f2250 R11: 0000000000000246 R12: 00007fb39d9b3080 [ 54.492276][ T5065] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 54.500231][ T5065] creat("./file1", 000) = 4 exit_group(0) = ? +++ exited with 0 +++ [ 54.507966][ T5065] hfs