audit: type=1800 audit(1675824418.477:142): pid=14436 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.3" name="bus" dev="sda1" ino=14422 res=0 kvm: vcpu 0: requested 128 ns lapic timer period limited to 500000 ns ============================================ WARNING: possible recursive locking detected 4.14.305-syzkaller #0 Not tainted -------------------------------------------- syz-executor.1/14454 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 PKCS7: Unknown OID: [4] 5.25.305.0.0.0.72057593854307314.81.88.91.1400.11 5 locks held by syz-executor.1/14454: #0: (&type->s_umount_key#60/1){+.+.}, at: [] alloc_super fs/super.c:251 [inline] #0: (&type->s_umount_key#60/1){+.+.}, 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: 14454 Comm: syz-executor.1 Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 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 PKCS7: Only support pkcs7_signedData type 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 PKCS7: Unknown OID: [4] 5.25.305.0.0.0.72057593854307314.81.88.91.1400.11 block_read_full_page+0x25e/0x8d0 fs/buffer.c:2316 PKCS7: Only support pkcs7_signedData type 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 PKCS7: Unknown OID: [4] 5.25.305.0.0.0.72057593854307314.81.88.91.1400.11 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 PKCS7: Only support pkcs7_signedData type 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: 0033:0x7ff85304362a RSP: 002b:00007ff8515b3f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000000061b RCX: 00007ff85304362a RDX: 0000000020000600 RSI: 00000000200001c0 RDI: 00007ff8515b3fe0 RBP: 00007ff8515b4020 R08: 00007ff8515b4020 R09: 0000000001a00010 R10: 0000000001a00010 R11: 0000000000000202 R12: 0000000020000600 R13: 00000000200001c0 R14: 00007ff8515b3fe0 R15: 0000000020000140 PKCS7: Unknown OID: [4] 5.25.305.0.0.0.72057593854307314.81.88.91.1400.11 kvm: vcpu 0: requested 128 ns lapic timer period limited to 500000 ns PKCS7: Only support pkcs7_signedData type kvm: vcpu 0: requested 128 ns lapic timer period limited to 500000 ns netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. kvm: vcpu 0: requested 128 ns lapic timer period limited to 500000 ns netlink: 76 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 3220 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 3220 bytes leftover after parsing attributes in process `syz-executor.0'. ipt_REJECT: TCP_RESET invalid for non-tcp ipt_REJECT: TCP_RESET invalid for non-tcp BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop4 BTRFS info (device loop4): using free space tree BTRFS info (device loop4): has skinny extents ipt_REJECT: TCP_RESET invalid for non-tcp BTRFS info (device loop4): using free space tree BTRFS info (device loop4): has skinny extents ipt_REJECT: TCP_RESET invalid for non-tcp ipt_REJECT: TCP_RESET invalid for non-tcp audit: type=1326 audit(1675824425.717:143): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=14940 comm="syz-executor.0" exe="/root/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f94e33540f9 code=0x0 audit: type=1326 audit(1675824425.747:144): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=14940 comm="syz-executor.0" exe="/root/syz-executor.0" sig=31 arch=c000003e syscall=3 compat=0 ip=0x7f94e3305fab code=0x0 BTRFS info (device loop2): using free space tree BTRFS info (device loop2): has skinny extents ipt_REJECT: TCP_RESET invalid for non-tcp ipt_REJECT: TCP_RESET invalid for non-tcp BTRFS info (device loop1): using free space tree BTRFS info (device loop1): has skinny extents netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.