============================================ WARNING: possible recursive locking detected 4.14.305-syzkaller #0 Not tainted -------------------------------------------- syz-executor.1/9655 is trying to acquire lock: (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: [] hfsplus_get_block+0x1f9/0x820 fs/hfsplus/extents.c:260 but task is already holding lock: (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: [] hfsplus_file_extend+0x188/0xef0 fs/hfsplus/extents.c:452 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-executor.1/9655: #0: (&type->s_umount_key#54/1){+.+.}, at: [] alloc_super fs/super.c:251 [inline] #0: (&type->s_umount_key#54/1){+.+.}, at: [] sget_userns+0x556/0xc10 fs/super.c:516 #1: (&sbi->vh_mutex){+.+.}, at: [] hfsplus_fill_super+0x1314/0x1850 fs/hfsplus/super.c:553 #2: (&tree->tree_lock){+.+.}, at: [] hfsplus_find_init+0x1a8/0x220 fs/hfsplus/bfind.c:30 #3: (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: [] hfsplus_file_extend+0x188/0xef0 fs/hfsplus/extents.c:452 #4: (&sbi->alloc_mutex){+.+.}, at: [] hfsplus_block_allocate+0xd2/0x910 fs/hfsplus/bitmap.c:35 stack backtrace: CPU: 0 PID: 9655 Comm: syz-executor.1 Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_deadlock_bug kernel/locking/lockdep.c:1800 [inline] check_deadlock kernel/locking/lockdep.c:1847 [inline] validate_chain kernel/locking/lockdep.c:2448 [inline] __lock_acquire.cold+0x180/0x97c kernel/locking/lockdep.c:3491 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 hfsplus_get_block+0x1f9/0x820 fs/hfsplus/extents.c:260 block_read_full_page+0x25e/0x8d0 fs/buffer.c:2316 do_read_cache_page+0x38e/0xc10 mm/filemap.c:2713 read_mapping_page include/linux/pagemap.h:398 [inline] hfsplus_block_allocate+0x189/0x910 fs/hfsplus/bitmap.c:37 hfsplus_file_extend+0x421/0xef0 fs/hfsplus/extents.c:463 hfsplus_bmap_reserve+0x26e/0x410 fs/hfsplus/btree.c:357 hfsplus_create_cat+0x1af/0x10d0 fs/hfsplus/catalog.c:272 hfsplus_fill_super+0x1386/0x1850 fs/hfsplus/super.c:560 mount_bdev+0x2b3/0x360 fs/super.c:1134 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f88f6a2e62a RSP: 002b:00007f88f4f9ef88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000000061b RCX: 00007f88f6a2e62a RDX: 0000000020000600 RSI: 00000000200001c0 RDI: 00007f88f4f9efe0 RBP: 00007f88f4f9f020 R08: 00007f88f4f9f020 R09: 0000000001a00010 R10: 0000000001a00010 R11: 0000000000000202 R12: 0000000020000600 R13: 00000000200001c0 R14: 00007f88f4f9efe0 R15: 0000000020000140 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) print_req_error: I/O error, dev loop1, sector 0 XFS (loop2): Mounting V4 Filesystem EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue XFS (loop2): Ending clean mount EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue XFS (loop2): Unmounting Filesystem bridge0: port 2(bridge_slave_1) entered disabled state bridge0: port 1(bridge_slave_0) entered disabled state EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 kvm: emulating exchange as write XFS (loop2): Mounting V4 Filesystem XFS (loop2): Ending clean mount overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. XFS (loop2): Unmounting Filesystem caif:caif_disconnect_client(): nothing to disconnect netlink: 1 bytes leftover after parsing attributes in process `syz-executor.5'. loop2: p4 < > loop_reread_partitions: partition scan of loop2 () failed (rc=-16) print_req_error: I/O error, dev loop2, sector 0 print_req_error: I/O error, dev loop2, sector 0 Buffer I/O error on dev loop2p4, logical block 0, async page read print_req_error: I/O error, dev loop2, sector 0 Buffer I/O error on dev loop2p4, logical block 0, async page read print_req_error: I/O error, dev loop2, sector 0 Buffer I/O error on dev loop2p4, logical block 0, async page read print_req_error: I/O error, dev loop2, sector 0 Buffer I/O error on dev loop2p4, logical block 0, async page read print_req_error: I/O error, dev loop2, sector 0 Buffer I/O error on dev loop2p4, logical block 0, async page read print_req_error: I/O error, dev loop2, sector 0 Buffer I/O error on dev loop2p4, logical block 0, async page read print_req_error: I/O error, dev loop2, sector 0 Buffer I/O error on dev loop2p4, logical block 0, async page read print_req_error: I/O error, dev loop2, sector 0 Buffer I/O error on dev loop2p4, logical block 0, async page read Buffer I/O error on dev loop2p4, logical block 0, async page read loop2: p4 < > loop2: p4 < > IPVS: ftp: loaded support on port[0] = 21 loop2: p4 < > audit: type=1800 audit(1676361708.771:2): pid=9976 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="loop4" ino=7 res=0 audit: type=1800 audit(1676361709.481:3): pid=10033 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="loop4" ino=7 res=0 audit: type=1800 audit(1676361709.531:4): pid=10046 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="loop1" ino=7 res=0 audit: type=1800 audit(1676361709.571:5): pid=10042 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="loop2" ino=7 res=0 audit: type=1800 audit(1676361709.951:6): pid=10070 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="loop2" ino=7 res=0 audit: type=1800 audit(1676361710.161:7): pid=10081 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="loop2" ino=7 res=0 audit: type=1800 audit(1676361710.521:8): pid=10104 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="loop1" ino=7 res=0 audit: type=1800 audit(1676361710.571:9): pid=10102 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="loop4" ino=7 res=0 audit: type=1800 audit(1676361710.941:10): pid=10122 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="loop2" ino=7 res=0 audit: type=1800 audit(1676361711.181:11): pid=10150 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="loop4" ino=7 res=0 EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs error (device loop5): ext4_mb_generate_buddy:754: group 0, block bitmap and bg descriptor inconsistent: 25 vs 150994969 free clusters EXT4-fs (loop5): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 1 with error 28