loop0: detected capacity change from 0 to 1024 netlink: 204 bytes leftover after parsing attributes in process `syz.0.0'. netlink: 4 bytes leftover after parsing attributes in process `syz.0.0'. netlink: 10 bytes leftover after parsing attributes in process `syz.0.0'. netlink: 66 bytes leftover after parsing attributes in process `syz.0.0'. netlink: 8 bytes leftover after parsing attributes in process `syz.0.0'. netlink: 5 bytes leftover after parsing attributes in process `syz.0.0'. netlink: 5 bytes leftover after parsing attributes in process `syz.0.0'. netlink: 5 bytes leftover after parsing attributes in process `syz.0.0'. netlink: 16 bytes leftover after parsing attributes in process `syz.0.0'. netlink: 396 bytes leftover after parsing attributes in process `syz.0.0'. capability: warning: `syz.0.0' uses deprecated v2 capabilities in a way that may be insecure ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.0/5316 is trying to acquire lock: ffff888033d580b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x2d0 fs/hfsplus/bfind.c:28 but task is already holding lock: ffff888023083048 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_get_block+0x39e/0x1670 fs/hfsplus/extents.c:260 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:614 [inline] __mutex_lock+0x19f/0x1300 kernel/locking/mutex.c:776 hfsplus_file_extend+0x215/0x1d70 fs/hfsplus/extents.c:453 hfsplus_bmap_reserve+0x125/0x510 fs/hfsplus/btree.c:358 __hfsplus_ext_write_extent+0x28d/0x5b0 fs/hfsplus/extents.c:104 __hfsplus_ext_cache_extent+0x89/0xe30 fs/hfsplus/extents.c:186 hfsplus_ext_read_extent fs/hfsplus/extents.c:218 [inline] hfsplus_file_extend+0x4af/0x1d70 fs/hfsplus/extents.c:457 hfsplus_get_block+0x42c/0x1670 fs/hfsplus/extents.c:245 __block_write_begin_int+0x6c6/0x1910 fs/buffer.c:2145 block_write_begin fs/buffer.c:2256 [inline] cont_write_begin+0x737/0xae0 fs/buffer.c:2594 hfsplus_write_begin+0x66/0xb0 fs/hfsplus/inode.c:48 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4314 generic_file_write_iter+0x14a/0x680 mm/filemap.c:4457 aio_write+0x5cd/0x870 fs/aio.c:1634 __io_submit_one fs/aio.c:-1 [inline] io_submit_one+0x7bb/0x14c0 fs/aio.c:2053 __do_sys_io_submit fs/aio.c:2112 [inline] __se_sys_io_submit+0x195/0x340 fs/aio.c:2082 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&tree->tree_lock/1){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868 __mutex_lock_common kernel/locking/mutex.c:614 [inline] __mutex_lock+0x19f/0x1300 kernel/locking/mutex.c:776 hfsplus_find_init+0x168/0x2d0 fs/hfsplus/bfind.c:28 hfsplus_ext_read_extent fs/hfsplus/extents.c:216 [inline] hfsplus_get_block+0x91e/0x1670 fs/hfsplus/extents.c:268 block_read_full_folio+0x29f/0x830 fs/buffer.c:2420 read_pages+0x373/0x5a0 mm/readahead.c:173 page_cache_ra_unbounded+0x74f/0x980 mm/readahead.c:302 filemap_get_pages+0x4c5/0x1ec0 mm/filemap.c:2690 filemap_read+0x447/0x1230 mm/filemap.c:2800 __kernel_read+0x504/0x9b0 fs/read_write.c:530 integrity_kernel_read+0x89/0xd0 security/integrity/iint.c:28 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:480 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] ima_calc_file_hash+0x12c3/0x17f0 security/integrity/ima/ima_crypto.c:568 ima_collect_measurement+0x48b/0x930 security/integrity/ima/ima_api.c:293 process_measurement+0x12e0/0x1cb0 security/integrity/ima/ima_main.c:406 ima_file_check+0xdf/0x130 security/integrity/ima/ima_main.c:663 security_file_post_open+0xb3/0x260 security/security.c:2652 do_open fs/namei.c:4639 [inline] path_openat+0x34cb/0x3e20 fs/namei.c:4796 do_filp_open+0x22d/0x490 fs/namei.c:4823 do_sys_openat2+0x12f/0x220 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1447 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&HFSPLUS_I(inode)->extents_lock); lock(&tree->tree_lock/1); lock(&HFSPLUS_I(inode)->extents_lock); lock(&tree->tree_lock/1); *** DEADLOCK *** 4 locks held by syz.0.0/5316: #0: ffff888011b3a420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:499 #1: ffff8880334375b8 (&ima_iint_mutex_key[depth]){+.+.}-{4:4}, at: process_measurement+0x7f2/0x1cb0 security/integrity/ima/ima_main.c:300 #2: ffff8880230833d8 (mapping.invalidate_lock#3){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1092 [inline] #2: ffff8880230833d8 (mapping.invalidate_lock#3){.+.+}-{4:4}, at: page_cache_ra_unbounded+0x1ce/0x980 mm/readahead.c:233 #3: ffff888023083048 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_get_block+0x39e/0x1670 fs/hfsplus/extents.c:260 stack backtrace: CPU: 0 UID: 0 PID: 5316 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2043 check_noncircular+0x12e/0x150 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868 __mutex_lock_common kernel/locking/mutex.c:614 [inline] __mutex_lock+0x19f/0x1300 kernel/locking/mutex.c:776 hfsplus_find_init+0x168/0x2d0 fs/hfsplus/bfind.c:28 hfsplus_ext_read_extent fs/hfsplus/extents.c:216 [inline] hfsplus_get_block+0x91e/0x1670 fs/hfsplus/extents.c:268 block_read_full_folio+0x29f/0x830 fs/buffer.c:2420 read_pages+0x373/0x5a0 mm/readahead.c:173 page_cache_ra_unbounded+0x74f/0x980 mm/readahead.c:302 filemap_get_pages+0x4c5/0x1ec0 mm/filemap.c:2690 filemap_read+0x447/0x1230 mm/filemap.c:2800 __kernel_read+0x504/0x9b0 fs/read_write.c:530 integrity_kernel_read+0x89/0xd0 security/integrity/iint.c:28 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:480 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] ima_calc_file_hash+0x12c3/0x17f0 security/integrity/ima/ima_crypto.c:568 ima_collect_measurement+0x48b/0x930 security/integrity/ima/ima_api.c:293 process_measurement+0x12e0/0x1cb0 security/integrity/ima/ima_main.c:406 ima_file_check+0xdf/0x130 security/integrity/ima/ima_main.c:663 security_file_post_open+0xb3/0x260 security/security.c:2652 do_open fs/namei.c:4639 [inline] path_openat+0x34cb/0x3e20 fs/namei.c:4796 do_filp_open+0x22d/0x490 fs/namei.c:4823 do_sys_openat2+0x12f/0x220 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1447 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbe52f9acb9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fbe53e46028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fbe53215fa0 RCX: 00007fbe52f9acb9 RDX: 0000000000101740 RSI: 0000200000000040 RDI: ffffffffffffff9c RBP: 00007fbe53008bf7 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000179 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fbe53216038 R14: 00007fbe53215fa0 R15: 00007ffd4477c6e8