Warning: Permanently added '10.128.0.224' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 61.036498][ T3542] loop0: detected capacity change from 0 to 1024 [ 61.057814][ T3542] [ 61.060188][ T3542] ============================================ [ 61.066353][ T3542] WARNING: possible recursive locking detected [ 61.072607][ T3542] 6.1.33-syzkaller #0 Not tainted [ 61.077646][ T3542] -------------------------------------------- [ 61.083800][ T3542] syz-executor101/3542 is trying to acquire lock: [ 61.090202][ T3542] ffff888073731548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x37f/0x14e0 [ 61.101113][ T3542] [ 61.101113][ T3542] but task is already holding lock: [ 61.108483][ T3542] ffff888073732988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1d2/0x1b10 [ 61.119534][ T3542] [ 61.119534][ T3542] other info that might help us debug this: [ 61.127581][ T3542] Possible unsafe locking scenario: [ 61.127581][ T3542] [ 61.135021][ T3542] CPU0 [ 61.138299][ T3542] ---- [ 61.141572][ T3542] lock(&HFSPLUS_I(inode)->extents_lock); [ 61.147371][ T3542] lock(&HFSPLUS_I(inode)->extents_lock); [ 61.153173][ T3542] [ 61.153173][ T3542] *** DEADLOCK *** [ 61.153173][ T3542] [ 61.161305][ T3542] May be due to missing lock nesting notation [ 61.161305][ T3542] [ 61.169612][ T3542] 4 locks held by syz-executor101/3542: [ 61.175143][ T3542] #0: ffff88801870c460 (sb_writers#9){.+.+}-{0:0}, at: vfs_write+0x269/0xba0 [ 61.184024][ T3542] #1: ffff888073732b80 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: generic_file_write_iter+0x7f/0x310 [ 61.195429][ T3542] #2: ffff888073732988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1d2/0x1b10 [ 61.206923][ T3542] #3: ffff88807ef140f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_allocate+0x9a/0x8b0 [ 61.217280][ T3542] [ 61.217280][ T3542] stack backtrace: [ 61.223159][ T3542] CPU: 0 PID: 3542 Comm: syz-executor101 Not tainted 6.1.33-syzkaller #0 [ 61.231566][ T3542] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 61.241614][ T3542] Call Trace: [ 61.244885][ T3542] [ 61.247812][ T3542] dump_stack_lvl+0x1e3/0x2cb [ 61.252533][ T3542] ? nf_tcp_handle_invalid+0x642/0x642 [ 61.257999][ T3542] ? panic+0x75d/0x75d [ 61.262075][ T3542] validate_chain+0x4726/0x58e0 [ 61.266928][ T3542] ? stack_trace_snprint+0xe0/0xe0 [ 61.272036][ T3542] ? check_noncircular+0x1e3/0x3b0 [ 61.277144][ T3542] ? reacquire_held_locks+0x660/0x660 [ 61.282601][ T3542] ? add_chain_block+0x850/0x850 [ 61.287534][ T3542] ? lockdep_unlock+0x165/0x300 [ 61.292420][ T3542] ? lockdep_lock+0x2a0/0x2a0 [ 61.297102][ T3542] ? look_up_lock_class+0x77/0x140 [ 61.302218][ T3542] ? register_lock_class+0x100/0x990 [ 61.307497][ T3542] ? validate_chain+0x13d1/0x58e0 [ 61.312520][ T3542] ? is_dynamic_key+0x1f0/0x1f0 [ 61.317373][ T3542] ? mark_lock+0x9a/0x340 [ 61.321752][ T3542] __lock_acquire+0x125b/0x1f80 [ 61.326612][ T3542] lock_acquire+0x1f8/0x5a0 [ 61.331125][ T3542] ? hfsplus_get_block+0x37f/0x14e0 [ 61.336332][ T3542] ? read_lock_is_recursive+0x10/0x10 [ 61.341700][ T3542] ? __might_sleep+0xb0/0xb0 [ 61.346288][ T3542] ? cont_write_begin+0x63f/0x880 [ 61.351313][ T3542] ? is_dynamic_key+0x1f0/0x1f0 [ 61.356158][ T3542] ? generic_file_write_iter+0xab/0x310 [ 61.361708][ T3542] ? ksys_write+0x19c/0x2c0 [ 61.366204][ T3542] ? mark_lock+0x9a/0x340 [ 61.370529][ T3542] __mutex_lock_common+0x1d4/0x2520 [ 61.375737][ T3542] ? hfsplus_get_block+0x37f/0x14e0 [ 61.380945][ T3542] ? hfsplus_get_block+0x37f/0x14e0 [ 61.386147][ T3542] ? mutex_lock_io_nested+0x60/0x60 [ 61.391357][ T3542] mutex_lock_nested+0x17/0x20 [ 61.396132][ T3542] hfsplus_get_block+0x37f/0x14e0 [ 61.401164][ T3542] ? create_page_buffers+0x1d2/0x4b0 [ 61.406451][ T3542] ? hfsplus_ext_write_extent+0x1f0/0x1f0 [ 61.412179][ T3542] ? do_raw_spin_unlock+0x137/0x8a0 [ 61.417380][ T3542] ? create_page_buffers+0x24e/0x4b0 [ 61.422665][ T3542] block_read_full_folio+0x403/0xf60 [ 61.427952][ T3542] ? hfsplus_ext_write_extent+0x1f0/0x1f0 [ 61.433676][ T3542] ? block_is_partially_uptodate+0x590/0x590 [ 61.439656][ T3542] ? folio_add_lru+0xa80/0xa80 [ 61.444426][ T3542] ? folio_add_lru+0x42e/0xa80 [ 61.449196][ T3542] filemap_read_folio+0x199/0x780 [ 61.454251][ T3542] ? filemap_add_folio+0x570/0x570 [ 61.459366][ T3542] ? hfsplus_writepage+0x30/0x30 [ 61.464305][ T3542] ? maybe_unlock_mmap_for_io+0x130/0x130 [ 61.470027][ T3542] ? __mutex_lock_common+0x429/0x2520 [ 61.475420][ T3542] ? mutex_lock_io_nested+0x60/0x60 [ 61.480722][ T3542] do_read_cache_folio+0x2ee/0x810 [ 61.485862][ T3542] ? hfsplus_writepage+0x30/0x30 [ 61.490815][ T3542] do_read_cache_page+0x32/0x220 [ 61.495765][ T3542] hfsplus_block_allocate+0xea/0x8b0 [ 61.501228][ T3542] ? reacquire_held_locks+0x660/0x660 [ 61.506609][ T3542] hfsplus_file_extend+0xa4c/0x1b10 [ 61.511818][ T3542] ? check_path+0x21/0x40 [ 61.516149][ T3542] ? hfsplus_get_block+0x14e0/0x14e0 [ 61.521445][ T3542] ? mark_lock+0x9a/0x340 [ 61.525781][ T3542] ? __lock_acquire+0x125b/0x1f80 [ 61.530808][ T3542] hfsplus_get_block+0x402/0x14e0 [ 61.535845][ T3542] ? hfsplus_ext_write_extent+0x1f0/0x1f0 [ 61.541571][ T3542] ? rcu_lock_release+0x5/0x20 [ 61.546439][ T3542] ? __lock_acquire+0x1f80/0x1f80 [ 61.551635][ T3542] ? create_page_buffers+0x24e/0x4b0 [ 61.556919][ T3542] __block_write_begin_int+0x544/0x1a30 [ 61.562480][ T3542] ? hfsplus_ext_write_extent+0x1f0/0x1f0 [ 61.568211][ T3542] ? page_zero_new_buffers+0x650/0x650 [ 61.573760][ T3542] ? PageHeadHuge+0x8e/0x1c0 [ 61.578360][ T3542] ? hfsplus_ext_write_extent+0x1f0/0x1f0 [ 61.584087][ T3542] block_write_begin+0x98/0x1f0 [ 61.588935][ T3542] cont_write_begin+0x63f/0x880 [ 61.593789][ T3542] ? generic_cont_expand_simple+0x2a0/0x2a0 [ 61.599771][ T3542] ? fault_in_readable+0x209/0x340 [ 61.604888][ T3542] ? fault_in_safe_writeable+0x250/0x250 [ 61.610525][ T3542] ? do_raw_spin_unlock+0x137/0x8a0 [ 61.615725][ T3542] hfsplus_write_begin+0x86/0xd0 [ 61.620672][ T3542] ? hfsplus_ext_write_extent+0x1f0/0x1f0 [ 61.626396][ T3542] generic_perform_write+0x2fc/0x5e0 [ 61.631783][ T3542] ? generic_file_direct_write+0x460/0x460 [ 61.637682][ T3542] ? __file_remove_privs+0x640/0x640 [ 61.642971][ T3542] ? generic_write_checks+0x15c/0x1c0 [ 61.648340][ T3542] ? clear_nonspinnable+0x60/0x60 [ 61.653368][ T3542] __generic_file_write_iter+0x176/0x400 [ 61.659007][ T3542] generic_file_write_iter+0xab/0x310 [ 61.664385][ T3542] vfs_write+0x7ae/0xba0 [ 61.668628][ T3542] ? file_end_write+0x250/0x250 [ 61.673482][ T3542] ? __fdget_pos+0x261/0x2f0 [ 61.678071][ T3542] ksys_write+0x19c/0x2c0 [ 61.682398][ T3542] ? print_irqtrace_events+0x210/0x210 [ 61.687855][ T3542] ? __ia32_sys_read+0x80/0x80 [ 61.692615][ T3542] ? syscall_enter_from_user_mode+0x2e/0x220 [ 61.698596][ T3542] ? lockdep_hardirqs_on+0x94/0x130 [ 61.703798][ T3542] ? syscall_enter_from_user_mode+0x2e/0x220 [ 61.709782][ T3542] do_syscall_64+0x3d/0xb0 [ 61.714206][ T3542] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 61.720099][ T3542] RIP: 0033:0x7fc30b3a8929 [ 61.724510][ T3542] 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 [ 61.744109][ T3542] RSP: 002b:00007ffddfa5bf88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 61.752519][ T3542] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc30b3a8929 [ 61.760572][ T3542] RDX: 0000000000000478 RSI: 0000000020000d00 RDI: 0000000000000004 [ 61.768538][ T3542] RBP: 00007fc30b3681c0 R08: 0000000000000000 R09: 0000000000000000 [ 61.776509][ T3542] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc30b368250 [ 61.784476][ T3542] R13: 0000000000000000 R14: 00000000000000