./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1444995370 <...> DUID 00:04:7c:8f:25:e4:1e:61:d4:15:b8:1c:50:2a:7f:f5:0b:01 forked to background, child pid 4644 [ 30.535039][ T4645] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.545378][ T4645] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.60' (ECDSA) to the list of known hosts. execve("./syz-executor1444995370", ["./syz-executor1444995370"], 0x7ffca5ac24c0 /* 10 vars */) = 0 brk(NULL) = 0x555555860000 brk(0x555555860c40) = 0x555555860c40 arch_prctl(ARCH_SET_FS, 0x555555860300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1444995370", 4096) = 28 brk(0x555555881c40) = 0x555555881c40 brk(0x555555882000) = 0x555555882000 mprotect(0x7f083445c000, 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) = 0x7f082bfa3000 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(0x7f082bfa3000, 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 syzkaller login: [ 50.717624][ T5066] loop0: detected capacity change from 0 to 1024 [ 50.739194][ T5066] hfsplus: xattr searching failed [ 50.747034][ T5066] hfsplus: xattr searching failed [ 50.753434][ T5066] [ 50.755780][ T5066] ============================================ [ 50.761926][ T5066] WARNING: possible recursive locking detected [ 50.768068][ T5066] 6.2.0-rc2-syzkaller-00010-g69b41ac87e4a #0 Not tainted [ 50.775065][ T5066] -------------------------------------------- [ 50.781191][ T5066] syz-executor144/5066 is trying to acquire lock: [ 50.787576][ T5066] ffff8880794307c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x3a3/0x1560 [ 50.798434][ T5066] [ 50.798434][ T5066] but task is already holding lock: [ 50.805775][ T5066] ffff8880296c0e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1af/0x19d0 [ 50.816795][ T5066] [ 50.816795][ T5066] other info that might help us debug this: [ 50.824831][ T5066] Possible unsafe locking scenario: [ 50.824831][ T5066] [ 50.832255][ T5066] CPU0 [ 50.835514][ T5066] ---- [ 50.838769][ T5066] lock(&HFSPLUS_I(inode)->extents_lock); [ 50.844552][ T5066] lock(&HFSPLUS_I(inode)->extents_lock); [ 50.850333][ T5066] [ 50.850333][ T5066] *** DEADLOCK *** [ 50.850333][ T5066] [ 50.858452][ T5066] May be due to missing lock nesting notation [ 50.858452][ T5066] [ 50.866745][ T5066] 4 locks held by syz-executor144/5066: [ 50.872265][ T5066] #0: ffff8880224e6460 (sb_writers#9){.+.+}-{0:0}, at: do_pwritev+0x1e9/0x350 [ 50.881212][ T5066] #1: ffff8880296c1080 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: generic_file_write_iter+0x7f/0x310 [ 50.892496][ T5066] #2: ffff8880296c0e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1af/0x19d0 [ 50.903963][ T5066] #3: ffff888021bf10f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_allocate+0x9f/0x900 [ 50.914288][ T5066] [ 50.914288][ T5066] stack backtrace: [ 50.920163][ T5066] CPU: 1 PID: 5066 Comm: syz-executor144 Not tainted 6.2.0-rc2-syzkaller-00010-g69b41ac87e4a #0 [ 50.930549][ T5066] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 50.940584][ T5066] Call Trace: [ 50.943844][ T5066] [ 50.946758][ T5066] dump_stack_lvl+0x1b1/0x290 [ 50.951430][ T5066] ? nf_tcp_handle_invalid+0x630/0x630 [ 50.956873][ T5066] ? panic+0x710/0x710 [ 50.960922][ T5066] ? lockdep_unlock+0x144/0x2e0 [ 50.965753][ T5066] ? print_tainted+0x141/0x160 [ 50.970496][ T5066] ? lockdep_print_held_locks+0x10f/0x1b0 [ 50.976369][ T5066] validate_chain+0x4843/0x6ae0 [ 50.981205][ T5066] ? stack_trace_save+0x104/0x1e0 [ 50.986210][ T5066] ? reacquire_held_locks+0x650/0x650 [ 50.991560][ T5066] ? check_noncircular+0x1aa/0x390 [ 50.996651][ T5066] ? add_chain_block+0x850/0x850 [ 51.001568][ T5066] ? lockdep_unlock+0x144/0x2e0 [ 51.006408][ T5066] ? lockdep_lock+0x290/0x290 [ 51.011065][ T5066] ? add_lock_to_list+0x1c7/0x2d0 [ 51.016075][ T5066] ? validate_chain+0x1478/0x6ae0 [ 51.021094][ T5066] ? reacquire_held_locks+0x650/0x650 [ 51.026448][ T5066] ? lockdep_unlock+0x144/0x2e0 [ 51.031281][ T5066] ? lockdep_lock+0x290/0x290 [ 51.035939][ T5066] ? add_lock_to_list+0x1c7/0x2d0 [ 51.040942][ T5066] ? validate_chain+0x1478/0x6ae0 [ 51.045950][ T5066] ? reacquire_held_locks+0x650/0x650 [ 51.051299][ T5066] ? reacquire_held_locks+0x650/0x650 [ 51.056650][ T5066] ? reacquire_held_locks+0x650/0x650 [ 51.062003][ T5066] ? stack_trace_save+0x1e0/0x1e0 [ 51.067009][ T5066] ? reacquire_held_locks+0x650/0x650 [ 51.072360][ T5066] ? validate_chain+0x177/0x6ae0 [ 51.077278][ T5066] ? unwind_get_return_address+0x48/0x80 [ 51.082896][ T5066] ? stack_trace_save+0x1e0/0x1e0 [ 51.087899][ T5066] ? rcu_read_lock_sched_held+0x87/0x110 [ 51.093514][ T5066] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 51.099472][ T5066] ? rcu_lock_release+0x5/0x20 [ 51.104217][ T5066] ? trace_lock_release+0x95/0x220 [ 51.109311][ T5066] ? stack_trace_save+0x1e0/0x1e0 [ 51.114317][ T5066] ? rcu_read_lock_sched_held+0x87/0x110 [ 51.119927][ T5066] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 51.125887][ T5066] ? rcu_lock_release+0x5/0x20 [ 51.130631][ T5066] ? trace_lock_release+0x95/0x220 [ 51.135722][ T5066] ? rcu_lock_release+0x5/0x20 [ 51.140464][ T5066] ? trace_lock_release+0x95/0x220 [ 51.145554][ T5066] ? rcu_lock_release+0x5/0x20 [ 51.150297][ T5066] ? lock_release+0x81/0x820 [ 51.154866][ T5066] ? read_lock_is_recursive+0x10/0x10 [ 51.160217][ T5066] ? deref_stack_reg+0x17a/0x210 [ 51.165133][ T5066] ? __lock_acquire+0x1f60/0x1f60 [ 51.170137][ T5066] ? unwind_next_frame+0x1b06/0x24c0 [ 51.175401][ T5066] ? deref_stack_reg+0x17a/0x210 [ 51.180319][ T5066] ? stack_trace_save+0x1e0/0x1e0 [ 51.185413][ T5066] ? is_bpf_text_address+0x253/0x270 [ 51.190676][ T5066] ? stack_trace_save+0x1e0/0x1e0 [ 51.195684][ T5066] ? reacquire_held_locks+0x650/0x650 [ 51.201037][ T5066] ? __kernel_text_address+0x9/0x40 [ 51.206218][ T5066] ? unwind_get_return_address+0x48/0x80 [ 51.211831][ T5066] ? arch_stack_walk+0x98/0xe0 [ 51.216580][ T5066] ? stack_trace_save+0x104/0x1e0 [ 51.221584][ T5066] ? stack_trace_snprint+0xf0/0xf0 [ 51.226675][ T5066] ? validate_chain+0x177/0x6ae0 [ 51.231592][ T5066] ? add_chain_block+0x850/0x850 [ 51.236513][ T5066] ? lockdep_unlock+0x144/0x2e0 [ 51.241349][ T5066] ? stack_trace_save+0x1e0/0x1e0 [ 51.246359][ T5066] ? rcu_read_lock_sched_held+0x87/0x110 [ 51.251973][ T5066] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 51.257932][ T5066] ? rcu_lock_release+0x5/0x20 [ 51.262683][ T5066] ? read_lock_is_recursive+0x10/0x10 [ 51.268059][ T5066] ? rcu_lock_release+0x5/0x20 [ 51.272806][ T5066] ? __lock_acquire+0x1f60/0x1f60 [ 51.277810][ T5066] ? deref_stack_reg+0x17a/0x210 [ 51.282729][ T5066] ? preempt_count_add+0x8d/0x180 [ 51.287734][ T5066] ? register_lock_class+0xc2/0x930 [ 51.292910][ T5066] ? is_bpf_text_address+0x253/0x270 [ 51.298174][ T5066] ? is_dynamic_key+0x1f0/0x1f0 [ 51.303005][ T5066] ? mark_lock+0x9a/0x350 [ 51.307320][ T5066] __lock_acquire+0x1292/0x1f60 [ 51.312156][ T5066] lock_acquire+0x182/0x3c0 [ 51.316638][ T5066] ? hfsplus_get_block+0x3a3/0x1560 [ 51.321838][ T5066] ? read_lock_is_recursive+0x10/0x10 [ 51.327203][ T5066] ? __might_sleep+0xc0/0xc0 [ 51.331776][ T5066] ? register_lock_class+0xc2/0x930 [ 51.336951][ T5066] ? create_page_buffers+0x1c8/0x4b0 [ 51.342217][ T5066] ? block_read_full_folio+0x177/0xfa0 [ 51.347656][ T5066] ? filemap_read_folio+0x187/0x7d0 [ 51.352835][ T5066] ? do_read_cache_folio+0x2d3/0x790 [ 51.358102][ T5066] ? read_cache_page+0x56/0x270 [ 51.362934][ T5066] ? hfsplus_file_extend+0x9d4/0x19d0 [ 51.368284][ T5066] ? hfsplus_get_block+0x415/0x1560 [ 51.373463][ T5066] ? is_dynamic_key+0x1f0/0x1f0 [ 51.378295][ T5066] ? hfsplus_write_begin+0x86/0xd0 [ 51.383481][ T5066] __mutex_lock_common+0x1bd/0x26e0 [ 51.388674][ T5066] ? hfsplus_get_block+0x3a3/0x1560 [ 51.393876][ T5066] ? __lock_acquire+0x1292/0x1f60 [ 51.398903][ T5066] ? hfsplus_get_block+0x3a3/0x1560 [ 51.404100][ T5066] ? mutex_lock_io_nested+0x60/0x60 [ 51.409283][ T5066] ? rcu_read_lock_sched_held+0x87/0x110 [ 51.414899][ T5066] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 51.420860][ T5066] ? create_page_buffers+0x1c8/0x4b0 [ 51.426123][ T5066] ? trace_lock_release+0x95/0x220 [ 51.431215][ T5066] mutex_lock_nested+0x17/0x20 [ 51.435960][ T5066] hfsplus_get_block+0x3a3/0x1560 [ 51.440971][ T5066] ? __lock_acquire+0x1f60/0x1f60 [ 51.445977][ T5066] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 51.451679][ T5066] ? do_raw_spin_unlock+0x134/0x8a0 [ 51.456860][ T5066] ? create_page_buffers+0x244/0x4b0 [ 51.462129][ T5066] block_read_full_folio+0x3b3/0xfa0 [ 51.467401][ T5066] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 51.473103][ T5066] ? block_is_partially_uptodate+0x620/0x620 [ 51.479065][ T5066] ? folio_add_lru+0x480/0x960 [ 51.483818][ T5066] filemap_read_folio+0x187/0x7d0 [ 51.488827][ T5066] ? folio_alloc+0x47/0x50 [ 51.493232][ T5066] ? hfsplus_writepage+0x30/0x30 [ 51.498151][ T5066] ? maybe_unlock_mmap_for_io+0x130/0x130 [ 51.503854][ T5066] ? __mutex_lock_common+0x45f/0x26e0 [ 51.509214][ T5066] ? mutex_lock_io_nested+0x60/0x60 [ 51.514407][ T5066] ? stack_trace_save+0x1e0/0x1e0 [ 51.519426][ T5066] do_read_cache_folio+0x2d3/0x790 [ 51.524531][ T5066] ? hfsplus_writepage+0x30/0x30 [ 51.529473][ T5066] read_cache_page+0x56/0x270 [ 51.534153][ T5066] hfsplus_block_allocate+0xf9/0x900 [ 51.539433][ T5066] ? rcu_read_lock_sched_held+0x87/0x110 [ 51.545051][ T5066] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 51.551020][ T5066] hfsplus_file_extend+0x9d4/0x19d0 [ 51.556208][ T5066] ? hfsplus_get_block+0x1560/0x1560 [ 51.561474][ T5066] ? lockdep_hardirqs_on_prepare+0x428/0x790 [ 51.567434][ T5066] ? mark_lock+0x9a/0x350 [ 51.571745][ T5066] ? rcu_read_lock_sched_held+0x87/0x110 [ 51.577358][ T5066] hfsplus_get_block+0x415/0x1560 [ 51.582368][ T5066] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 51.588072][ T5066] ? rcu_lock_release+0x5/0x20 [ 51.592816][ T5066] ? __might_sleep+0xc0/0xc0 [ 51.597387][ T5066] ? create_page_buffers+0x244/0x4b0 [ 51.602656][ T5066] __block_write_begin_int+0x54c/0x1a80 [ 51.608185][ T5066] ? folio_index+0xae/0x370 [ 51.612676][ T5066] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 51.618376][ T5066] ? page_zero_new_buffers+0x940/0x940 [ 51.623822][ T5066] ? PageHeadHuge+0x8a/0x1d0 [ 51.628652][ T5066] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 51.634356][ T5066] block_write_begin+0x93/0x1e0 [ 51.639189][ T5066] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 51.644891][ T5066] cont_write_begin+0x606/0x860 [ 51.649728][ T5066] ? generic_cont_expand_simple+0x250/0x250 [ 51.655601][ T5066] ? fault_in_readable+0x219/0x310 [ 51.660694][ T5066] ? fault_in_safe_writeable+0x240/0x240 [ 51.666335][ T5066] ? rcu_read_lock_sched_held+0x87/0x110 [ 51.671947][ T5066] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 51.677916][ T5066] hfsplus_write_begin+0x86/0xd0 [ 51.682837][ T5066] ? hfsplus_ext_write_extent+0x1e0/0x1e0 [ 51.688539][ T5066] generic_perform_write+0x2e4/0x5e0 [ 51.693806][ T5066] ? __mark_inode_dirty+0x593/0x600 [ 51.698986][ T5066] ? generic_file_direct_write+0x610/0x610 [ 51.704774][ T5066] ? __file_remove_privs+0x610/0x610 [ 51.710048][ T5066] ? generic_write_checks+0x15c/0x1c0 [ 51.715491][ T5066] __generic_file_write_iter+0x176/0x400 [ 51.721107][ T5066] generic_file_write_iter+0xab/0x310 [ 51.726460][ T5066] do_iter_write+0x6c2/0xc20 [ 51.731032][ T5066] ? vfs_iter_write+0xa0/0xa0 [ 51.735694][ T5066] ? rcu_read_lock_any_held+0xb1/0x130 [ 51.741139][ T5066] do_pwritev+0x200/0x350 [ 51.745453][ T5066] ? do_preadv+0x330/0x330 [ 51.749851][ T5066] ? _raw_spin_unlock_irq+0x1f/0x40 [ 51.755059][ T5066] ? lockdep_hardirqs_on+0x8d/0x130 [ 51.760244][ T5066] ? _raw_spin_unlock_irq+0x2a/0x40 [ 51.765447][ T5066] ? ptrace_notify+0x245/0x340 [ 51.770189][ T5066] ? do_notify_parent+0xe00/0xe00 [ 51.775288][ T5066] ? syscall_enter_from_user_mode+0x2e/0x1d0 [ 51.781258][ T5066] ? __x64_sys_pwritev2+0xb9/0x100 [ 51.786358][ T5066] do_syscall_64+0x3d/0xb0 [ 51.790769][ T5066] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 51.796644][ T5066] RIP: 0033:0x7f08343ef7c9 [ 51.801044][ T5066] 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 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=44027}], 1, 9000, 0) = -1 ENOSPC (No space left on device) exit_group(0) = ? +++ exited with 0 +++ [ 51.820633][ T5066] R