hfsplus: invalid extended attribute record ============================================ WARNING: possible recursive locking detected 6.16.0-rc5-syzkaller-00038-g733923397fd9 #0 Not tainted -------------------------------------------- syz.0.0/5341 is trying to acquire lock: ffff8880537c1548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_get_block+0x39e/0x1530 fs/hfsplus/extents.c:260 but task is already holding lock: ffff8880537c2988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_truncate+0x294/0xb40 fs/hfsplus/extents.c:577 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 3 locks held by syz.0.0/5341: #0: ffff8880537c2b78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #0: ffff8880537c2b78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: hfsplus_file_release+0xe2/0x3e0 fs/hfsplus/inode.c:232 #1: ffff8880537c2988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_truncate+0x294/0xb40 fs/hfsplus/extents.c:577 #2: ffff88803f3b40f8 (&sbi->alloc_mutex){+.+.}-{4:4}, at: hfsplus_block_free+0xbe/0x550 fs/hfsplus/bitmap.c:182 stack backtrace: CPU: 0 UID: 0 PID: 5341 Comm: syz.0.0 Not tainted 6.16.0-rc5-syzkaller-00038-g733923397fd9 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_deadlock_bug+0x28b/0x2a0 kernel/locking/lockdep.c:3044 check_deadlock kernel/locking/lockdep.c:3096 [inline] validate_chain+0x1a3f/0x2140 kernel/locking/lockdep.c:3898 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5240 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 __mutex_lock_common kernel/locking/mutex.c:602 [inline] __mutex_lock+0x182/0xe80 kernel/locking/mutex.c:747 hfsplus_get_block+0x39e/0x1530 fs/hfsplus/extents.c:260 block_read_full_folio+0x29f/0x830 fs/buffer.c:2427 filemap_read_folio+0x117/0x380 mm/filemap.c:2412 do_read_cache_folio+0x350/0x590 mm/filemap.c:3894 do_read_cache_page mm/filemap.c:3960 [inline] read_cache_page+0x5d/0x170 mm/filemap.c:3969 read_mapping_page include/linux/pagemap.h:966 [inline] hfsplus_block_free+0x121/0x550 fs/hfsplus/bitmap.c:185 hfsplus_free_extents+0x176/0xae0 fs/hfsplus/extents.c:363 hfsplus_file_truncate+0x736/0xb40 fs/hfsplus/extents.c:592 hfsplus_delete_inode fs/hfsplus/inode.c:-1 [inline] hfsplus_file_release+0x303/0x3e0 fs/hfsplus/inode.c:237 __fput+0x449/0xa70 fs/file_table.c:465 task_work_run+0x1d1/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fde9a38e929 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 RSP: 002b:00007ffe5917fef8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 0000000000014ba1 RCX: 00007fde9a38e929 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007fde9a5b7ba0 R08: 0000000000000001 R09: 00000010591801ef R10: 00007fde9a1ff030 R11: 0000000000000246 R12: 00007fde9a5b5fac R13: 00007fde9a5b5fa0 R14: ffffffffffffffff R15: 00007ffe59180010 hfsplus: unable to mark blocks free: error -5 hfsplus: can't free extent