program: syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r0 = openat$null(0xffffffffffffff9c, &(0x7f0000000100), 0x10000, 0x0) ioctl$DRM_IOCTL_MODE_GETPLANERESOURCES(r0, 0xc01064b5, &(0x7f0000000180)={&(0x7f0000000140)=[0x0, 0x0, 0x0], 0x3}) creat(&(0x7f00000001c0)='./file1\x00', 0x10) (async) r1 = creat(&(0x7f00000001c0)='./file1\x00', 0x10) io_setup(0x202, &(0x7f0000000200)=0x0) r3 = socket$key(0xf, 0x3, 0x2) perf_event_open(&(0x7f0000000440)={0x2, 0x80, 0xaf, 0x1, 0x0, 0x0, 0x0, 0x100, 0x4d100, 0xc, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext={0x0, 0x80000001}, 0xc0, 0x4, 0xffffffff, 0x7, 0x10007, 0x400003, 0x0, 0x0, 0x0, 0x0, 0x7}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) (async) perf_event_open(&(0x7f0000000440)={0x2, 0x80, 0xaf, 0x1, 0x0, 0x0, 0x0, 0x100, 0x4d100, 0xc, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext={0x0, 0x80000001}, 0xc0, 0x4, 0xffffffff, 0x7, 0x10007, 0x400003, 0x0, 0x0, 0x0, 0x0, 0x7}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) r4 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000080)='/proc/partitions\x00', 0x0, 0x0) r5 = openat$sysctl(0xffffffffffffff9c, &(0x7f0000000040)='/proc/sys/vm/compact_memory\x00', 0x1, 0x0) syz_init_net_socket$ax25(0x3, 0x3, 0x8) (async) r6 = syz_init_net_socket$ax25(0x3, 0x3, 0x8) ioctl$SIOCAX25GETINFOOLD(r6, 0x89e9, &(0x7f0000000080)) (async) ioctl$SIOCAX25GETINFOOLD(r6, 0x89e9, &(0x7f0000000080)) sendfile(r5, r4, &(0x7f0000000180)=0x58, 0x3fffff) sendmsg$key(r3, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000080)=ANY=[@ANYBLOB="020400030e000000000000000000000005000600000000000a00000000000000ff02000000000000000000000000000100000000000000000200010000000000000000000000430005000500000000000a00000000000000fc00"/112], 0x70}}, 0x0) io_submit(r2, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r1, &(0x7f0000000000), 0x70000}]) [ 68.386212][ T5318] loop0: detected capacity change from 0 to 1024 [ 68.421101][ T4668] Bluetooth: hci0: command tx timeout [ 68.483061][ T5319] syz.0.0 uses old SIOCAX25GETINFO [ 68.529558][ T5318] [ 68.530608][ T5318] ============================================ [ 68.533103][ T5318] WARNING: possible recursive locking detected [ 68.536491][ T5318] syzkaller #0 Not tainted [ 68.538850][ T5318] -------------------------------------------- [ 68.542094][ T5318] syz.0.0/5318 is trying to acquire lock: [ 68.544798][ T5318] ffff8880523a8108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1ba0 [ 68.550036][ T5318] [ 68.550036][ T5318] but task is already holding lock: [ 68.553279][ T5318] ffff8880523aa988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1ba0 [ 68.557871][ T5318] [ 68.557871][ T5318] other info that might help us debug this: [ 68.561300][ T5318] Possible unsafe locking scenario: [ 68.561300][ T5318] [ 68.564580][ T5318] CPU0 [ 68.565924][ T5318] ---- [ 68.567351][ T5318] lock(&HFSPLUS_I(inode)->extents_lock); [ 68.569650][ T5318] lock(&HFSPLUS_I(inode)->extents_lock); [ 68.572018][ T5318] [ 68.572018][ T5318] *** DEADLOCK *** [ 68.572018][ T5318] [ 68.575111][ T5318] May be due to missing lock nesting notation [ 68.575111][ T5318] [ 68.578581][ T5318] 3 locks held by syz.0.0/5318: [ 68.580664][ T5318] #0: ffff8880523aab78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: generic_file_write_iter+0xeb/0x550 [ 68.585383][ T5318] #1: ffff8880523aa988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1ba0 [ 68.590204][ T5318] #2: ffff8880336ba0b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x290 [ 68.594675][ T5318] [ 68.594675][ T5318] stack backtrace: [ 68.597172][ T5318] CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 68.597185][ T5318] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 68.597192][ T5318] Call Trace: [ 68.597200][ T5318] [ 68.597206][ T5318] dump_stack_lvl+0x189/0x250 [ 68.597224][ T5318] ? __pfx_dump_stack_lvl+0x10/0x10 [ 68.597237][ T5318] ? __pfx__printk+0x10/0x10 [ 68.597248][ T5318] ? print_lock_name+0xde/0x100 [ 68.597256][ T5318] print_deadlock_bug+0x28b/0x2a0 [ 68.597277][ T5318] validate_chain+0x1a3f/0x2140 [ 68.597288][ T5318] ? __bfs+0x154/0x2a0 [ 68.597299][ T5318] ? check_path+0x21/0x40 [ 68.597309][ T5318] ? look_up_lock_class+0x74/0x170 [ 68.597360][ T5318] ? register_lock_class+0x51/0x320 [ 68.597367][ T5318] __lock_acquire+0xab9/0xd20 [ 68.597374][ T5318] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 68.597382][ T5318] lock_acquire+0x120/0x360 [ 68.597387][ T5318] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 68.597396][ T5318] __mutex_lock+0x187/0x1350 [ 68.597404][ T5318] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 68.597412][ T5318] ? check_path+0x21/0x40 [ 68.597418][ T5318] ? check_noncircular+0xe0/0x160 [ 68.597426][ T5318] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 68.597433][ T5318] ? lockdep_unlock+0x89/0x120 [ 68.597446][ T5318] ? __pfx___mutex_lock+0x10/0x10 [ 68.597461][ T5318] hfsplus_file_extend+0x1f8/0x1ba0 [ 68.597473][ T5318] ? __lock_acquire+0xab9/0xd20 [ 68.597484][ T5318] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 68.597495][ T5318] ? __pfx___mutex_trylock_common+0x10/0x10 [ 68.597533][ T5318] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 68.597546][ T5318] ? rcu_is_watching+0x15/0xb0 [ 68.597557][ T5318] ? trace_contention_end+0x39/0x120 [ 68.597570][ T5318] ? __asan_memset+0x22/0x50 [ 68.597581][ T5318] ? hfsplus_brec_find+0x1a9/0x510 [ 68.597592][ T5318] hfsplus_bmap_reserve+0x122/0x500 [ 68.597608][ T5318] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 68.597622][ T5318] __hfsplus_ext_cache_extent+0x89/0xe30 [ 68.597635][ T5318] hfsplus_file_extend+0x437/0x1ba0 [ 68.597649][ T5318] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 68.597662][ T5318] ? clean_bdev_aliases+0x5c9/0x6b0 [ 68.597675][ T5318] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 68.597687][ T5318] hfsplus_get_block+0x40a/0x15d0 [ 68.597700][ T5318] ? __pfx_hfsplus_get_block+0x10/0x10 [ 68.597712][ T5318] ? do_raw_spin_unlock+0x4d/0x240 [ 68.597725][ T5318] ? _raw_spin_unlock+0x28/0x50 [ 68.597737][ T5318] __block_write_begin_int+0x6b5/0x1900 [ 68.597747][ T5318] ? __pfx_workingset_update_node+0x10/0x10 [ 68.597760][ T5318] ? __pfx_hfsplus_get_block+0x10/0x10 [ 68.597771][ T5318] ? __pfx___block_write_begin_int+0x10/0x10 [ 68.597784][ T5318] cont_write_begin+0x789/0xb50 [ 68.597797][ T5318] ? __pfx_cont_write_begin+0x10/0x10 [ 68.597807][ T5318] ? __pfx___might_resched+0x10/0x10 [ 68.597817][ T5318] ? __mark_inode_dirty+0x3d2/0xe10 [ 68.597826][ T5318] ? folio_unlock+0x101/0x160 [ 68.597840][ T5318] hfsplus_write_begin+0x66/0xb0 [ 68.597850][ T5318] ? __pfx_hfsplus_get_block+0x10/0x10 [ 68.597862][ T5318] generic_perform_write+0x2c5/0x900 [ 68.597875][ T5318] ? __pfx_generic_perform_write+0x10/0x10 [ 68.597884][ T5318] ? file_update_time+0x2da/0x490 [ 68.597894][ T5318] ? __generic_file_write_iter+0xf9/0x230 [ 68.597903][ T5318] ? generic_file_write_iter+0x103/0x550 [ 68.597912][ T5318] generic_file_write_iter+0x117/0x550 [ 68.597921][ T5318] ? __pfx_generic_file_write_iter+0x10/0x10 [ 68.597930][ T5318] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 68.597941][ T5318] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 68.597951][ T5318] ? __pfx_aa_file_perm+0x10/0x10 [ 68.597966][ T5318] ? __lock_acquire+0xab9/0xd20 [ 68.597979][ T5318] ? aio_write+0x4c4/0x7a0 [ 68.597989][ T5318] aio_write+0x535/0x7a0 [ 68.598000][ T5318] ? __pfx_aio_write+0x10/0x10 [ 68.598012][ T5318] ? __might_fault+0xb0/0x130 [ 68.598027][ T5318] io_submit_one+0x78b/0x1310 [ 68.598039][ T5318] ? __pfx_io_submit_one+0x10/0x10 [ 68.598048][ T5318] ? __might_fault+0xb0/0x130 [ 68.598061][ T5318] ? __might_fault+0xb0/0x130 [ 68.598072][ T5318] __se_sys_io_submit+0x185/0x2f0 [ 68.598087][ T5318] ? __pfx___se_sys_io_submit+0x10/0x10 [ 68.598102][ T5318] ? do_syscall_64+0xbe/0xfa0 [ 68.598115][ T5318] do_syscall_64+0xfa/0xfa0 [ 68.598126][ T5318] ? lockdep_hardirqs_on+0x9c/0x150 [ 68.598137][ T5318] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 68.598146][ T5318] ? clear_bhb_loop+0x60/0xb0 [ 68.598157][ T5318] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 68.598165][ T5318] RIP: 0033:0x7f315d78efc9 [ 68.598176][ T5318] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 [ 68.598184][ T5318] RSP: 002b:00007f315e644038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 68.598196][ T5318] RAX: ffffffffffffffda RBX: 00007f315d9e5fa0 RCX: 00007f315d78efc9 [ 68.598203][ T5318] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f315e5fa000 [ 68.598210][ T5318] RBP: 00007f315d811f91 R08: 0000000000000000 R09: 0000000000000000 [ 68.598216][ T5318] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 68.598222][ T5318] R13: 00007f315d9e6038 R14: 00007f315d9e5fa0 R15: 00007ffe1bc5ee08 [ 68.598232][ T5318]