====================================================== device lo entered promiscuous mode WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.3/25375 is trying to acquire lock: 00000000789e42b2 (&tree->tree_lock#2){+.+.}, at: hfsplus_file_truncate+0xde7/0x1040 fs/hfsplus/extents.c:595 but task is already holding lock: 00000000fc222eef (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_file_truncate+0x1e2/0x1040 fs/hfsplus/extents.c:576 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&HFSPLUS_I(inode)->extents_lock){+.+.}: hfsplus_get_block+0x292/0x960 fs/hfsplus/extents.c:260 block_read_full_page+0x288/0xd10 fs/buffer.c:2259 do_read_cache_page+0x533/0x1170 mm/filemap.c:2828 read_mapping_page include/linux/pagemap.h:402 [inline] __hfs_bnode_create+0x5b7/0xb60 fs/hfsplus/bnode.c:447 hfsplus_bnode_find+0x2aa/0xb80 fs/hfsplus/bnode.c:497 hfsplus_brec_find+0x2af/0x500 fs/hfsplus/bfind.c:183 hfsplus_brec_read+0x28/0x120 fs/hfsplus/bfind.c:222 hfsplus_find_cat+0x1d0/0x480 fs/hfsplus/catalog.c:202 hfsplus_iget+0x400/0x790 fs/hfsplus/super.c:81 hfsplus_fill_super+0xc5f/0x19e0 fs/hfsplus/super.c:503 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&tree->tree_lock#2){+.+.}: __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 hfsplus_file_truncate+0xde7/0x1040 fs/hfsplus/extents.c:595 hfsplus_setattr+0x1e7/0x310 fs/hfsplus/inode.c:263 notify_change+0x70b/0xfc0 fs/attr.c:334 do_truncate+0x134/0x1f0 fs/open.c:63 handle_truncate fs/namei.c:3009 [inline] do_last fs/namei.c:3427 [inline] path_openat+0x2308/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&HFSPLUS_I(inode)->extents_lock); lock(&tree->tree_lock#2); lock(&HFSPLUS_I(inode)->extents_lock); lock(&tree->tree_lock#2); *** DEADLOCK *** 3 locks held by syz-executor.3/25375: #0: 000000000d33c981 (sb_writers#28){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000000d33c981 (sb_writers#28){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 000000006a1c336f (&sb->s_type->i_mutex_key#36){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 000000006a1c336f (&sb->s_type->i_mutex_key#36){+.+.}, at: do_truncate+0x125/0x1f0 fs/open.c:61 #2: 00000000fc222eef (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_file_truncate+0x1e2/0x1040 fs/hfsplus/extents.c:576 stack backtrace: CPU: 0 PID: 25375 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2420 [inline] __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 hfsplus_file_truncate+0xde7/0x1040 fs/hfsplus/extents.c:595 hfsplus_setattr+0x1e7/0x310 fs/hfsplus/inode.c:263 notify_change+0x70b/0xfc0 fs/attr.c:334 do_truncate+0x134/0x1f0 fs/open.c:63 handle_truncate fs/namei.c:3009 [inline] do_last fs/namei.c:3427 [inline] path_openat+0x2308/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fb1cadca0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb1c933c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007fb1caee9f80 RCX: 00007fb1cadca0c9 RDX: 0000000000000000 RSI: 0000000000143242 RDI: 0000000020000000 RBP: 00007fb1cae25ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff958f9a1f R14: 00007fb1c933c300 R15: 0000000000022000 kauditd_printk_skb: 1 callbacks suppressed audit: type=1800 audit(1675240200.432:551): pid=25408 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="sda1" ino=15387 res=0 Y4`Ҙ: renamed from lo audit: type=1800 audit(1675240200.472:552): pid=25408 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="sda1" ino=15387 res=0 audit: type=1800 audit(1675240200.472:553): pid=25408 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="sda1" ino=15387 res=0 audit: type=1800 audit(1675240200.502:554): pid=25408 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="sda1" ino=15387 res=0 audit: type=1800 audit(1675240200.552:555): pid=25408 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="sda1" ino=15387 res=0 audit: type=1800 audit(1675240200.572:556): pid=25408 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="sda1" ino=15387 res=0 audit: type=1800 audit(1675240200.582:557): pid=25408 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="sda1" ino=15387 res=0 audit: type=1800 audit(1675240200.592:558): pid=25408 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="sda1" ino=15387 res=0 overlayfs: missing 'lowerdir' audit: type=1800 audit(1675240200.602:559): pid=25408 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="sda1" ino=15387 res=0 audit: type=1800 audit(1675240200.642:560): pid=25408 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="sda1" ino=15387 res=0 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.4'. F2FS-fs (loop5): Found nat_bits in checkpoint F2FS-fs (loop5): Mounted with checkpoint version = 48b305e5 hub 9-0:1.0: USB hub found hub 9-0:1.0: 8 ports detected overlayfs: unrecognized mount option "uppe" or missing value hub 9-0:1.0: USB hub found hub 9-0:1.0: 8 ports detected device lo entered promiscuous mode device lo entered promiscuous mode overlayfs: unrecognized mount option "uppe" or missing value overlayfs: unrecognized mount option "uppe" or missing value EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs error (device loop3): ext4_lookup:1611: inode #2: comm syz-executor.3: bad inode number: 1 Y4`Ҙ: renamed from lo netlink: 28 bytes leftover after parsing attributes in process `syz-executor.4'. device lo left promiscuous mode EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue BTRFS error (device loop5): superblock checksum mismatch device lo entered promiscuous mode BTRFS error (device loop5): open_ctree failed syz-executor.5 (24362) used greatest stack depth: 20984 bytes left EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue overlayfs: failed to resolve './bu': -2 overlayfs: failed to resolve './bu': -2 BTRFS error (device loop5): superblock checksum mismatch BTRFS error (device loop5): open_ctree failed BTRFS error (device loop3): superblock checksum mismatch BTRFS error (device loop3): open_ctree failed overlayfs: failed to resolve './bu': -2 BTRFS error (device loop5): superblock checksum mismatch BTRFS error (device loop5): open_ctree failed BTRFS error (device loop3): superblock checksum mismatch BTRFS error (device loop3): open_ctree failed overlayfs: filesystem on './bus' not supported x_tables: unsorted entry at hook 2 netlink: 'syz-executor.2': attribute type 4 has an invalid length. x_tables: unsorted entry at hook 2 kauditd_printk_skb: 51 callbacks suppressed audit: type=1800 audit(1675240205.642:612): pid=25932 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="bus" dev="sda1" ino=15421 res=0 x_tables: unsorted entry at hook 2 FAT-fs (loop5): Unrecognized mount option "184467440737095516150xffffffffffffffff" or missing value audit: type=1800 audit(1675240205.712:613): pid=25942 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=15420 res=0 BTRFS error (device loop3): superblock checksum mismatch overlayfs: filesystem on './bus' not supported overlayfs: './bus' not a directory BTRFS error (device loop3): open_ctree failed audit: type=1800 audit(1675240206.032:614): pid=25982 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="bus" dev="sda1" ino=15456 res=0 x_tables: unsorted entry at hook 2 audit: type=1800 audit(1675240206.062:615): pid=25989 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=15464 res=0 netlink: 'syz-executor.2': attribute type 4 has an invalid length. overlayfs: './bus' not a directory BTRFS error (device loop3): superblock checksum mismatch BTRFS error (device loop3): open_ctree failed audit: type=1800 audit(1675240206.712:616): pid=26061 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=15463 res=0 audit: type=1800 audit(1675240206.972:617): pid=26107 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="file0" dev="sda1" ino=15441 res=0 Bluetooth: hci5: command 0x0406 tx timeout audit: type=1804 audit(1675240207.043:618): pid=26108 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir1553331280/syzkaller.TtEbUM/578/file0" dev="sda1" ino=15441 res=1 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 76 bytes leftover after parsing attributes in process `syz-executor.5'. audit: type=1804 audit(1675240207.173:619): pid=26109 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir1553331280/syzkaller.TtEbUM/578/file0" dev="sda1" ino=15441 res=1 overlayfs: './bus' not a directory BTRFS error (device loop3): superblock checksum mismatch BTRFS error (device loop3): open_ctree failed audit: type=1800 audit(1675240208.383:620): pid=26136 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=15463 res=0 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. audit: type=1800 audit(1675240208.543:621): pid=26138 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="file0" dev="sda1" ino=15450 res=0 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 76 bytes leftover after parsing attributes in process `syz-executor.5'. BTRFS error (device loop3): superblock checksum mismatch BTRFS error (device loop3): open_ctree failed overlayfs: './bus' not a directory netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 76 bytes leftover after parsing attributes in process `syz-executor.5'.