./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor675846132 <...> no interfaces have a carrier [ 28.552286][ T4641] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.563112][ T4641] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: [ 28.931829][ T4730] sshd (4730) used greatest stack depth: 22344 bytes left OK syzkaller Warning: Permanently added '10.128.1.123' (ECDSA) to the list of known hosts. execve("./syz-executor675846132", ["./syz-executor675846132"], 0x7ffd7a0ea990 /* 10 vars */) = 0 brk(NULL) = 0x555555cea000 brk(0x555555ceac40) = 0x555555ceac40 arch_prctl(ARCH_SET_FS, 0x555555cea300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor675846132", 4096) = 27 brk(0x555555d0bc40) = 0x555555d0bc40 brk(0x555555d0c000) = 0x555555d0c000 mprotect(0x7f043dee3000, 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) = 0x7f0435a29000 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(0x7f0435a29000, 524288) = 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", "hfsplus", MS_SYNCHRONOUS|MS_RELATIME|MS_I_VERSION|MS_LAZYTIME, "force") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 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: [ 51.186952][ T5061] loop0: detected capacity change from 0 to 1024 [ 51.215224][ T5061] [ 51.217686][ T5061] ============================================ [ 51.223871][ T5061] WARNING: possible recursive locking detected [ 51.230040][ T5061] 6.2.0-rc1-syzkaller-00095-ge4cf7c25bae5 #0 Not tainted [ 51.237149][ T5061] -------------------------------------------- [ 51.243279][ T5061] syz-executor675/5061 is trying to acquire lock: [ 51.249668][ T5061] ffff88802a1f1548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x27b/0x9b0 [ 51.260463][ T5061] [ 51.260463][ T5061] but task is already holding lock: [ 51.267893][ T5061] ffff88802a1f2988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1bf/0xf60 [ 51.278832][ T5061] [ 51.278832][ T5061] other info that might help us debug this: [ 51.286867][ T5061] Possible unsafe locking scenario: [ 51.286867][ T5061] [ 51.294298][ T5061] CPU0 [ 51.297583][ T5061] ---- [ 51.300842][ T5061] lock(&HFSPLUS_I(inode)->extents_lock); [ 51.306630][ T5061] lock(&HFSPLUS_I(inode)->extents_lock); [ 51.312445][ T5061] [ 51.312445][ T5061] *** DEADLOCK *** [ 51.312445][ T5061] [ 51.320695][ T5061] May be due to missing lock nesting notation [ 51.320695][ T5061] [ 51.329099][ T5061] 4 locks held by syz-executor675/5061: [ 51.334820][ T5061] #0: ffff88802a94e460 (sb_writers#9){.+.+}-{0:0}, at: do_pwritev+0x1b6/0x270 [ 51.343813][ T5061] #1: ffff88802a1f2b80 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: generic_file_write_iter+0x92/0x350 [ 51.355140][ T5061] #2: ffff88802a1f2988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1bf/0xf60 [ 51.366571][ T5061] #3: ffff888077c720f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_allocate+0xe4/0x8c0 [ 51.377049][ T5061] [ 51.377049][ T5061] stack backtrace: [ 51.382953][ T5061] CPU: 1 PID: 5061 Comm: syz-executor675 Not tainted 6.2.0-rc1-syzkaller-00095-ge4cf7c25bae5 #0 [ 51.393355][ T5061] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 51.403423][ T5061] Call Trace: [ 51.406692][ T5061] [ 51.409645][ T5061] dump_stack_lvl+0xd1/0x138 [ 51.414253][ T5061] __lock_acquire.cold+0x116/0x3a7 [ 51.419364][ T5061] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 51.425337][ T5061] ? save_trace+0x43/0xad0 [ 51.429751][ T5061] ? create_page_buffers+0x440/0x640 [ 51.435028][ T5061] lock_acquire+0x1e3/0x630 [ 51.439667][ T5061] ? hfsplus_get_block+0x27b/0x9b0 [ 51.444777][ T5061] ? lock_release+0x810/0x810 [ 51.449450][ T5061] __mutex_lock+0x12f/0x1360 [ 51.454041][ T5061] ? hfsplus_get_block+0x27b/0x9b0 [ 51.459147][ T5061] ? hfsplus_get_block+0x27b/0x9b0 [ 51.464254][ T5061] ? mutex_lock_io_nested+0x11a0/0x11a0 [ 51.469798][ T5061] ? find_held_lock+0x2d/0x110 [ 51.474561][ T5061] ? create_page_buffers+0x440/0x640 [ 51.479837][ T5061] ? lock_downgrade+0x6e0/0x6e0 [ 51.484679][ T5061] hfsplus_get_block+0x27b/0x9b0 [ 51.489617][ T5061] block_read_full_folio+0x35b/0x9d0 [ 51.494894][ T5061] ? hfsplus_file_extend+0xf60/0xf60 [ 51.500177][ T5061] ? create_page_buffers+0x640/0x640 [ 51.505454][ T5061] ? folio_flags.constprop.0+0x53/0x150 [ 51.510999][ T5061] ? folio_add_lru+0x37b/0x680 [ 51.515845][ T5061] ? hfsplus_bmap+0x30/0x30 [ 51.520342][ T5061] filemap_read_folio+0xdb/0x2c0 [ 51.525274][ T5061] ? __folio_lock_killable+0x20/0x20 [ 51.530552][ T5061] ? mutex_lock_io_nested+0x11a0/0x11a0 [ 51.536096][ T5061] ? __mutex_lock+0x231/0x1360 [ 51.540858][ T5061] do_read_cache_folio+0x1df/0x510 [ 51.545963][ T5061] ? hfsplus_bmap+0x30/0x30 [ 51.550459][ T5061] read_cache_page+0x5d/0x160 [ 51.555131][ T5061] hfsplus_block_allocate+0x143/0x8c0 [ 51.560529][ T5061] hfsplus_file_extend+0x43a/0xf60 [ 51.565635][ T5061] ? hfsplus_free_fork+0x7d0/0x7d0 [ 51.570742][ T5061] ? find_held_lock+0x2d/0x110 [ 51.575504][ T5061] ? __filemap_get_folio+0x254/0xd80 [ 51.580784][ T5061] hfsplus_get_block+0x1b3/0x9b0 [ 51.585722][ T5061] __block_write_begin_int+0x3bd/0x14b0 [ 51.591261][ T5061] ? hfsplus_file_extend+0xf60/0xf60 [ 51.596585][ T5061] ? find_held_lock+0x2d/0x110 [ 51.601368][ T5061] ? invalidate_bh_lrus_cpu+0x140/0x140 [ 51.606930][ T5061] ? PageHeadHuge+0x1a2/0x200 [ 51.611628][ T5061] ? hfsplus_file_extend+0xf60/0xf60 [ 51.616911][ T5061] block_write_begin+0xb9/0x4d0 [ 51.621779][ T5061] cont_write_begin+0x534/0x740 [ 51.626619][ T5061] ? __mod_timer+0x8d4/0xe80 [ 51.631357][ T5061] ? hfsplus_file_extend+0xf60/0xf60 [ 51.636651][ T5061] ? block_write_begin+0x4d0/0x4d0 [ 51.641943][ T5061] ? rcu_read_lock_sched_held+0x3e/0x70 [ 51.647496][ T5061] ? mark_lock.part.0+0xee/0x1910 [ 51.652510][ T5061] hfsplus_write_begin+0x87/0x150 [ 51.657532][ T5061] ? hfsplus_file_extend+0xf60/0xf60 [ 51.662812][ T5061] cont_write_begin+0x334/0x740 [ 51.667677][ T5061] ? hfsplus_file_extend+0xf60/0xf60 [ 51.672972][ T5061] ? block_write_begin+0x4d0/0x4d0 [ 51.678094][ T5061] ? __mark_inode_dirty+0x6f6/0x11e0 [ 51.683900][ T5061] ? fault_in_subpage_writeable+0x20/0x20 [ 51.689622][ T5061] hfsplus_write_begin+0x87/0x150 [ 51.694647][ T5061] ? hfsplus_file_extend+0xf60/0xf60 [ 51.699930][ T5061] generic_perform_write+0x256/0x570 [ 51.705213][ T5061] ? folio_add_wait_queue+0x1c0/0x1c0 [ 51.710670][ T5061] ? new_inode+0x280/0x280 [ 51.715083][ T5061] ? generic_write_checks+0x2c0/0x400 [ 51.720451][ T5061] __generic_file_write_iter+0x2ae/0x500 [ 51.726082][ T5061] generic_file_write_iter+0xe3/0x350 [ 51.731449][ T5061] do_iter_readv_writev+0x20b/0x3b0 [ 51.736639][ T5061] ? generic_copy_file_range+0x1d0/0x1d0 [ 51.742352][ T5061] ? bpf_lsm_file_permission+0x9/0x10 [ 51.747717][ T5061] ? security_file_permission+0xaf/0xd0 [ 51.753265][ T5061] do_iter_write+0x182/0x700 [ 51.757870][ T5061] vfs_writev+0x1aa/0x630 [ 51.762279][ T5061] ? vfs_iter_write+0xa0/0xa0 [ 51.766942][ T5061] ? lock_release+0x810/0x810 [ 51.771626][ T5061] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 51.776816][ T5061] ? rwlock_bug.part.0+0x90/0x90 [ 51.781745][ T5061] ? _raw_spin_lock_irq+0x45/0x50 [ 51.786783][ T5061] ? find_held_lock+0x2d/0x110 [ 51.791549][ T5061] do_pwritev+0x1b6/0x270 [ 51.795870][ T5061] ? do_writev+0x2f0/0x2f0 [ 51.800297][ T5061] ? _raw_spin_unlock_irq+0x23/0x50 [ 51.805579][ T5061] ? lockdep_hardirqs_on+0x7d/0x100 [ 51.810770][ T5061] __x64_sys_pwritev2+0xef/0x150 [ 51.817697][ T5061] do_syscall_64+0x39/0xb0 [ 51.822123][ T5061] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 51.828113][ T5061] RIP: 0033:0x7f043de75ab9 [ 51.832515][ T5061] 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 [ 51.852112][ T5061] RSP: 002b:00007ffe4211b148 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 [ 51.860513][ T5061] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f043de75ab9 [ 51.868472][ T5061] RDX: 0000000000000001 RSI: 0000000020000200 RDI: 0000000000000004 [ 51.876431][ T5061] RBP: 00007f043de350c0 R08: 0000000000000000 R09: 0000000000000000 [ 51.884389][ T5061] R10: 0000000000005405 R11: 0000000000000246 R12: 00007f043de35150 [ 51.892346][ T5061] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 51.900395][ T5061] [ 51.903632][ T5061] hfsplus: request for non-existent node 31668 in B*Tree [ 51.910855][ T5061] hfsplus: request for non-existent node 31668 in B*Tree [ 51.918471][ T5061] hfsplus: request for non-existent node 31668 in B*Tree [ 51.925650][ T5061] hfsplus: request for non-existent node 31668 in B*Tree [ 51.932844][ T5061] hfsplus: request for non-existent node 31668 in B*Tree pwritev2(4, [{iov_base="\x17", iov_len=1}], 1, 21509, 0) = -1 ENOSPC (No space left on device) exit_group(0) = ? +++ exited with 0 +++ [ 51.