loop9: detected capacity change from 0 to 1024
============================================
WARNING: possible recursive locking detected
6.14.0-syzkaller-03576-g1e1ba8d23dae #0 Not tainted
--------------------------------------------
syz.9.333/9286 is trying to acquire lock:
ffff88805551df88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_get_block+0x385/0x14f0 fs/hfsplus/extents.c:260
but task is already holding lock:
ffff888055519c08 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x21d/0x1b70 fs/hfsplus/extents.c:458
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&HFSPLUS_I(inode)->extents_lock);
lock(&HFSPLUS_I(inode)->extents_lock);
*** DEADLOCK ***
May be due to missing lock nesting notation
5 locks held by syz.9.333/9286:
#0: ffff88807e7200e0 (&type->s_umount_key#58/1){+.+.}-{4:4}, at: alloc_super+0x221/0x9d0 fs/super.c:344
#1: ffff8880312b0998 (&sbi->vh_mutex){+.+.}-{4:4}, at: hfsplus_fill_super+0x13d0/0x1d50 fs/hfsplus/super.c:554
#2: ffff88807f3820b0 (&tree->tree_lock){+.+.}-{4:4}, at: hfsplus_find_init+0x14f/0x1d0 fs/hfsplus/bfind.c:28
#3: ffff888055519c08 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x21d/0x1b70 fs/hfsplus/extents.c:458
#4: ffff8880312b08f8 (&sbi->alloc_mutex){+.+.}-{4:4}, at: hfsplus_block_allocate+0x9e/0x8c0 fs/hfsplus/bitmap.c:35
stack backtrace:
CPU: 0 UID: 0 PID: 9286 Comm: syz.9.333 Not tainted 6.14.0-syzkaller-03576-g1e1ba8d23dae #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_deadlock_bug+0x2be/0x2d0 kernel/locking/lockdep.c:3042
check_deadlock kernel/locking/lockdep.c:3094 [inline]
validate_chain+0x928/0x24e0 kernel/locking/lockdep.c:3896
__lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235
lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866
__mutex_lock_common kernel/locking/mutex.c:587 [inline]
__mutex_lock+0x1bf/0x1000 kernel/locking/mutex.c:732
hfsplus_get_block+0x385/0x14f0 fs/hfsplus/extents.c:260
block_read_full_folio+0x2d3/0x850 fs/buffer.c:2391
filemap_read_folio+0x14a/0x3b0 mm/filemap.c:2400
do_read_cache_folio+0x373/0x5b0 mm/filemap.c:3884
do_read_cache_page mm/filemap.c:3950 [inline]
read_cache_page+0x5b/0x170 mm/filemap.c:3959
read_mapping_page include/linux/pagemap.h:1017 [inline]
hfsplus_block_allocate+0xee/0x8c0 fs/hfsplus/bitmap.c:37
hfsplus_file_extend+0xae0/0x1b70 fs/hfsplus/extents.c:469
hfsplus_bmap_reserve+0x105/0x4e0 fs/hfsplus/btree.c:358
hfsplus_create_cat+0x1d3/0x1bd0 fs/hfsplus/catalog.c:272
hfsplus_fill_super+0x1452/0x1d50 fs/hfsplus/super.c:561
get_tree_bdev_flags+0x490/0x5c0 fs/super.c:1636
vfs_get_tree+0x90/0x2b0 fs/super.c:1759
do_new_mount+0x2cf/0xb70 fs/namespace.c:3878
do_mount fs/namespace.c:4218 [inline]
__do_sys_mount fs/namespace.c:4429 [inline]
__se_sys_mount+0x38c/0x400 fs/namespace.c:4406
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa5f758e90a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa5f8483e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa5f8483ef0 RCX: 00007fa5f758e90a
RDX: 0000200000000000 RSI: 0000200000000080 RDI: 00007fa5f8483eb0
RBP: 0000200000000000 R08: 00007fa5f8483ef0 R09: 0000000000004400
R10: 0000000000004400 R11: 0000000000000246 R12: 0000200000000080
R13: 00007fa5f8483eb0 R14: 0000000000000720 R15: 0000200000000300
</TASK>
loop9: detected capacity change from 0 to 512
ext4: Unknown parameter 'strix����oU '