====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.5/14720 is trying to acquire lock: 00000000a1c6793f (&tree->tree_lock){+.+.}, at: hfsplus_file_truncate+0xde7/0x1040 fs/hfsplus/extents.c:595 but task is already holding lock: 000000009f3f789c (&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_file_extend+0x1bb/0xf40 fs/hfsplus/extents.c:457 hfsplus_bmap_reserve+0x298/0x440 fs/hfsplus/btree.c:357 hfsplus_create_cat+0x1e3/0x1210 fs/hfsplus/catalog.c:272 hfsplus_fill_super+0x14a8/0x19e0 fs/hfsplus/super.c:560 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){+.+.}: __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); lock(&HFSPLUS_I(inode)->extents_lock); lock(&tree->tree_lock); *** DEADLOCK *** 3 locks held by syz-executor.5/14720: #0: 0000000066a0e2bb (sb_writers#14){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 0000000066a0e2bb (sb_writers#14){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000d860017c (&sb->s_type->i_mutex_key#31){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 00000000d860017c (&sb->s_type->i_mutex_key#31){+.+.}, at: do_truncate+0x125/0x1f0 fs/open.c:61 #2: 000000009f3f789c (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_file_truncate+0x1e2/0x1040 fs/hfsplus/extents.c:576 stack backtrace: CPU: 0 PID: 14720 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 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: 0033:0x7f96d864d0f9 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:00007f96d6bbf168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f96d876cf80 RCX: 00007f96d864d0f9 RDX: 0000000000000000 RSI: 0000000000143242 RDI: 0000000020000000 RBP: 00007f96d86a8ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd8d08a4df R14: 00007f96d6bbf300 R15: 0000000000022000 IPVS: ftp: loaded support on port[0] = 21 block nbd0: shutting down sockets Unknown ioctl -2146950137 EXT4-fs (loop4): Ignoring removed nobh option EXT4-fs (loop4): Mount option "nodelalloc" incompatible with ext3 block nbd0: Device being setup by another task Unknown ioctl -2146950137 block nbd0: Device being setup by another task block nbd5: shutting down sockets block nbd0: Device being setup by another task Unknown ioctl -2146950137 IPVS: ftp: loaded support on port[0] = 21 block nbd5: Device being setup by another task IPVS: ftp: loaded support on port[0] = 21 Unknown ioctl -2146950137 EXT4-fs (loop4): Ignoring removed nobh option EXT4-fs (loop4): Mount option "nodelalloc" incompatible with ext3 IPVS: ftp: loaded support on port[0] = 21 block nbd5: Device being setup by another task Unknown ioctl -2146950137 block nbd2: shutting down sockets Unknown ioctl -2146950137 block nbd5: Device being setup by another task Unknown ioctl -2146950137 EXT4-fs (loop4): Ignoring removed nobh option EXT4-fs (loop4): Mount option "nodelalloc" incompatible with ext3 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 block nbd2: Device being setup by another task Unknown ioctl -2146950137 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. audit: type=1800 audit(1677932025.429:175): pid=15217 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=14499 res=0 audit: type=1800 audit(1677932025.449:176): pid=15217 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=14499 res=0 audit: type=1804 audit(1677932025.529:177): pid=15211 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir2802214951/syzkaller.TFizmZ/177/file0/bus" dev="loop2" ino=7 res=1 audit: type=1804 audit(1677932025.579:178): pid=15211 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir2802214951/syzkaller.TFizmZ/177/file0/bus" dev="loop2" ino=7 res=1 audit: type=1804 audit(1677932025.769:179): pid=15238 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir2802214951/syzkaller.TFizmZ/177/file0/bus" dev="loop2" ino=7 res=1 audit: type=1804 audit(1677932025.819:180): pid=15239 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir2802214951/syzkaller.TFizmZ/177/file0/bus" dev="loop2" ino=7 res=1 audit: type=1800 audit(1677932026.589:181): pid=15254 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=14518 res=0 IPVS: ftp: loaded support on port[0] = 21 audit: type=1800 audit(1677932026.609:182): pid=15254 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=14518 res=0 audit: type=1800 audit(1677932026.629:183): pid=15260 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=14523 res=0 audit: type=1800 audit(1677932026.629:184): pid=15260 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=14523 res=0 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 overlayfs: failed to resolve './file0': -2 overlayfs: unrecognized mount option "smack" or missing value IPVS: ftp: loaded support on port[0] = 21 overlayfs: failed to resolve './file0': -2 overlayfs: unrecognized mount option "smack" or missing value overlayfs: failed to resolve './file0': -2 overlayfs: unrecognized mount option "smack" or missing value XFS (loop5): Mounting V4 Filesystem XFS (loop5): Ending clean mount XFS (loop5): Quotacheck needed: Please wait. XFS (loop5): Quotacheck: Done. kauditd_printk_skb: 13 callbacks suppressed audit: type=1804 audit(1677932030.519:198): pid=15553 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir3541920496/syzkaller.nlTPSO/204/file0/bus" dev="loop5" ino=42 res=1 syz-executor.5 (15411) used greatest stack depth: 22328 bytes left XFS (loop5): Unmounting Filesystem IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 device bond1 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond1: link is not ready 8021q: adding VLAN 0 to HW filter on device bond1 IPVS: ftp: loaded support on port[0] = 21 F2FS-fs (loop1): invalid crc value