====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.5/13907 is trying to acquire lock: 000000004c7e574e (&tree->tree_lock){+.+.}, at: hfsplus_file_truncate+0xde7/0x1040 fs/hfsplus/extents.c:595 but task is already holding lock: 000000009be8fc52 (&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.5/13907: #0: 0000000082f547f9 (sb_writers#23){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 0000000082f547f9 (sb_writers#23){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue #1: 00000000439cb477 (&sb->s_type->i_mutex_key#27){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 00000000439cb477 (&sb->s_type->i_mutex_key#27){+.+.}, at: do_truncate+0x125/0x1f0 fs/open.c:61 #2: 000000009be8fc52 (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_file_truncate+0x1e2/0x1040 fs/hfsplus/extents.c:576 stack backtrace: CPU: 0 PID: 13907 Comm: syz-executor.5 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: 0033:0x7f98bd7ac0c9 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:00007f98bbd1e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f98bd8cbf80 RCX: 00007f98bd7ac0c9 RDX: 0000000000000000 RSI: 0000000000143242 RDI: 0000000020000000 RBP: 00007f98bd807ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff0e35d38f R14: 00007f98bbd1e300 R15: 0000000000022000 EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue BTRFS info (device loop3): using free space tree BTRFS info (device loop3): has skinny extents BTRFS info (device loop3): using free space tree BTRFS info (device loop3): has skinny extents BTRFS info (device loop2): using free space tree BTRFS info (device loop2): has skinny extents BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor.5 (14076) BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (14102) BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor.3 (14071) BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (14114) BTRFS info (device loop5): using free space tree BTRFS info (device loop5): has skinny extents BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor.3 (14144) BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (14174) BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor.2 (14153) BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (14183) BTRFS info (device loop5): using free space tree BTRFS info (device loop5): has skinny extents BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor.2 (14233) BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (14265) REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal ISO 9660 Extensions: Microsoft Joliet Level 0 REISERFS (device loop5): using ordered data mode rock: corrupted directory entry. extent=32, offset=2044, size=237 reiserfs: using flush barriers REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop5): Using r5 hash to sort names REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. audit: type=1804 audit(1675084856.137:52): pid=14316 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir2812135203/syzkaller.typrOq/131/file1/bus" dev="loop5" ino=4 res=1 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. audit: type=1804 audit(1675084856.167:53): pid=14316 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir2812135203/syzkaller.typrOq/131/file1/bus" dev="loop5" ino=4 res=1 ISOFS: Interleaved files not (yet) supported. ISOFS: File unit size != 0 for ISO file (1856). audit: type=1804 audit(1675084856.227:54): pid=14368 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir2812135203/syzkaller.typrOq/131/file1/bus" dev="loop5" ino=4 res=1 xt_ipvs: protocol family 7 not supported ISO 9660 Extensions: Microsoft Joliet Level 0 rock: corrupted directory entry. extent=32, offset=2044, size=237 xt_ipvs: protocol family 7 not supported REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal REISERFS (device loop5): using ordered data mode REISERFS (device loop3): using ordered data mode reiserfs: using flush barriers reiserfs: using flush barriers REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop3): checking transaction log (loop3) xt_ipvs: protocol family 7 not supported REISERFS (device loop3): Using r5 hash to sort names REISERFS (device loop5): Using r5 hash to sort names REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. audit: type=1804 audit(1675084856.967:55): pid=14393 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir3843204817/syzkaller.ue469i/118/file1/bus" dev="loop3" ino=4 res=1 xt_ipvs: protocol family 7 not supported audit: type=1804 audit(1675084856.997:56): pid=14393 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir3843204817/syzkaller.ue469i/118/file1/bus" dev="loop3" ino=4 res=1 audit: type=1804 audit(1675084857.057:57): pid=14394 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir2812135203/syzkaller.typrOq/132/file1/bus" dev="loop5" ino=4 res=1 xt_ipvs: protocol family 7 not supported ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 audit: type=1804 audit(1675084857.057:58): pid=14394 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir2812135203/syzkaller.typrOq/132/file1/bus" dev="loop5" ino=4 res=1 audit: type=1804 audit(1675084857.087:59): pid=14430 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir3843204817/syzkaller.ue469i/118/file1/bus" dev="loop3" ino=4 res=1 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. xt_ipvs: protocol family 7 not supported audit: type=1804 audit(1675084857.177:60): pid=14432 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir2812135203/syzkaller.typrOq/132/file1/bus" dev="loop5" ino=4 res=1 ISOFS: Interleaved files not (yet) supported. ISOFS: File unit size != 0 for ISO file (1856). ISO 9660 Extensions: Microsoft Joliet Level 0 xt_ipvs: protocol family 7 not supported rock: corrupted directory entry. extent=32, offset=2044, size=237 REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal REISERFS (device loop5): using ordered data mode reiserfs: using flush barriers REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 xt_ipvs: protocol family 7 not supported audit: type=1804 audit(1675084858.187:61): pid=14459 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir3664118358/syzkaller.zNmuE5/144/bus" dev="sda1" ino=13950 res=1 REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal REISERFS (device loop3): using ordered data mode reiserfs: using flush barriers REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop3): checking transaction log (loop3) REISERFS (device loop5): Using r5 hash to sort names REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop3): Using r5 hash to sort names REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage. overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. xt_ipvs: protocol family 7 not supported ISOFS: Interleaved files not (yet) supported. ISOFS: File unit size != 0 for ISO file (1856). overlayfs: failed to resolve './file0': -2 ISO 9660 Extensions: Microsoft Joliet Level 0 rock: corrupted directory entry. extent=32, offset=2044, size=237 REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal REISERFS (device loop5): using ordered data mode reiserfs: using flush barriers REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal REISERFS (device loop3): using ordered data mode reiserfs: using flush barriers REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop3): checking transaction log (loop3) REISERFS (device loop3): Using r5 hash to sort names REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop5): Using r5 hash to sort names overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. ISO 9660 Extensions: Microsoft Joliet Level 0 rock: corrupted directory entry. extent=32, offset=2044, size=237 ISOFS: Interleaved files not (yet) supported. ISOFS: File unit size != 0 for ISO file (1856). overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. ISOFS: Interleaved files not (yet) supported. ISOFS: File unit size != 0 for ISO file (1856). overlayfs: failed to resolve './file0': -2 overlayfs: failed to resolve './file0': -2 overlayfs: failed to resolve './file0': -2 ISO 9660 Extensions: Microsoft Joliet Level 0 rock: corrupted directory entry. extent=32, offset=2044, size=237 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. ISOFS: Interleaved files not (yet) supported. ISOFS: File unit size != 0 for ISO file (1856). overlayfs: failed to resolve './file0': -2 ISO 9660 Extensions: Microsoft Joliet Level 0 rock: corrupted directory entry. extent=32, offset=2044, size=237 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. overlayfs: failed to resolve './file0': -2 ISOFS: Interleaved files not (yet) supported. ISOFS: File unit size != 0 for ISO file (1856). delete_channel: no stack delete_channel: no stack