====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.3/23738 is trying to acquire lock: 00000000def52ada (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_file_extend+0x1bb/0xf40 fs/hfsplus/extents.c:457 but task is already holding lock: 00000000e7178c39 (&tree->tree_lock){+.+.}, at: hfsplus_find_init+0x1b7/0x220 fs/hfsplus/bfind.c:30 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&tree->tree_lock){+.+.}: 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 vfs_truncate+0x54b/0x6d0 fs/open.c:109 do_sys_truncate fs/open.c:132 [inline] do_sys_truncate+0x145/0x170 fs/open.c:120 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&HFSPLUS_I(inode)->extents_lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 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 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&tree->tree_lock); lock(&HFSPLUS_I(inode)->extents_lock); lock(&tree->tree_lock); lock(&HFSPLUS_I(inode)->extents_lock); *** DEADLOCK *** 3 locks held by syz-executor.3/23738: #0: 00000000e430dee1 (&type->s_umount_key#47/1){+.+.}, at: alloc_super fs/super.c:226 [inline] #0: 00000000e430dee1 (&type->s_umount_key#47/1){+.+.}, at: sget_userns+0x20b/0xcd0 fs/super.c:519 #1: 00000000099614ea (&sbi->vh_mutex){+.+.}, at: hfsplus_fill_super+0x1421/0x19e0 fs/hfsplus/super.c:553 #2: 00000000e7178c39 (&tree->tree_lock){+.+.}, at: hfsplus_find_init+0x1b7/0x220 fs/hfsplus/bfind.c:30 stack backtrace: CPU: 0 PID: 23738 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 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_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 RIP: 0033:0x7fdbe151962a Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007fdbdfa89f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000000005fe RCX: 00007fdbe151962a RDX: 0000000020000080 RSI: 0000000020000040 RDI: 00007fdbdfa89fe0 RBP: 00007fdbdfa8a020 R08: 00007fdbdfa8a020 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000080 R13: 0000000020000040 R14: 00007fdbdfa89fe0 R15: 0000000020000380 hfsplus: b-tree write err: -5, ino 4 IPVS: ftp: loaded support on port[0] = 21 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: 20 bytes leftover after parsing attributes in process `syz-executor.5'. xt_nfacct: accounting object `syz1' does not exists netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. xt_nfacct: accounting object `syz1' does not exists netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'. xt_nfacct: accounting object `syz1' does not exists netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. xt_nfacct: accounting object `syz1' does not exists netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'. caif:caif_disconnect_client(): nothing to disconnect batadv_slave_1: mtu less than device minimum netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. x_tables: duplicate underflow at hook 2 RDS: rds_bind could not find a transport for ::ffff:172.20.20.0, load rds_tcp or rds_rdma? audit: type=1804 audit(1676169077.700:58): pid=24297 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir1475928499/syzkaller.fT9w7G/358/cgroup.controllers" dev="sda1" ino=14901 res=1 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) audit: type=1804 audit(1676169078.580:59): pid=24353 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir1475928499/syzkaller.fT9w7G/359/cgroup.controllers" dev="sda1" ino=14780 res=1 audit: type=1804 audit(1676169078.640:60): pid=24354 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir4226203957/syzkaller.bqIHYX/442/cgroup.controllers" dev="sda1" ino=14909 res=1 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 Bluetooth: hci0: command 0x0405 tx timeout UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) audit: type=1804 audit(1676169080.450:61): pid=24378 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir1475928499/syzkaller.fT9w7G/360/cgroup.controllers" dev="sda1" ino=14885 res=1 audit: type=1804 audit(1676169080.590:62): pid=24404 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir4226203957/syzkaller.bqIHYX/443/cgroup.controllers" dev="sda1" ino=14915 res=1 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) audit: type=1804 audit(1676169081.960:63): pid=24428 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir1475928499/syzkaller.fT9w7G/361/cgroup.controllers" dev="sda1" ino=14919 res=1