REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop2): Using r5 hash to sort names REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage. ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.4/11658 is trying to acquire lock: 00000000e2099d81 (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_file_extend+0x1bb/0xf40 fs/hfsplus/extents.c:457 but task is already holding lock: 00000000d64298f5 (&tree->tree_lock#2){+.+.}, 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#2){+.+.}: 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 kauditd_printk_skb: 5 callbacks suppressed audit: type=1800 audit(1678043620.675:112): pid=11666 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="file0" dev="loop0" ino=4 res=0 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 -> #0 (&HFSPLUS_I(inode)->extents_lock){+.+.}: audit: type=1804 audit(1678043620.675:113): pid=11666 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir975387097/syzkaller.ixfWLF/39/file1/file0" dev="loop0" ino=4 res=1 __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_rename_cat+0x272/0x1490 fs/hfsplus/catalog.c:456 hfsplus_unlink+0x49c/0x820 fs/hfsplus/dir.c:376 vfs_unlink+0x27d/0x4e0 fs/namei.c:4002 do_unlinkat+0x3b8/0x660 fs/namei.c:4065 do_coredump+0x1f9c/0x2d60 fs/coredump.c:687 get_signal+0xed9/0x1f70 kernel/signal.c:2583 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode+0x277/0x2d0 arch/x86/entry/common.c:198 retint_user+0x8/0x18 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&tree->tree_lock#2); lock(&HFSPLUS_I(inode)->extents_lock); lock(&tree->tree_lock#2); lock(&HFSPLUS_I(inode)->extents_lock); *** DEADLOCK *** 5 locks held by syz-executor.4/11658: #0: 0000000037aeeeee (sb_writers#25){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 0000000037aeeeee (sb_writers#25){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 0000000004a3b541 (&type->i_mutex_dir_key#13/1){+.+.}, at: inode_lock_nested include/linux/fs.h:783 [inline] #1: 0000000004a3b541 (&type->i_mutex_dir_key#13/1){+.+.}, at: do_unlinkat+0x27d/0x660 fs/namei.c:4051 #2: 000000000c9ce918 (&sb->s_type->i_mutex_key#29){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000000c9ce918 (&sb->s_type->i_mutex_key#29){+.+.}, at: vfs_unlink+0xca/0x4e0 fs/namei.c:3993 #3: 00000000271595f3 (&sbi->vh_mutex){+.+.}, at: hfsplus_unlink+0x140/0x820 fs/hfsplus/dir.c:370 #4: 00000000d64298f5 (&tree->tree_lock#2){+.+.}, at: hfsplus_find_init+0x1b7/0x220 fs/hfsplus/bfind.c:30 stack backtrace: CPU: 1 PID: 11658 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 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_rename_cat+0x272/0x1490 fs/hfsplus/catalog.c:456 hfsplus_unlink+0x49c/0x820 fs/hfsplus/dir.c:376 vfs_unlink+0x27d/0x4e0 fs/namei.c:4002 do_unlinkat+0x3b8/0x660 fs/namei.c:4065 do_coredump+0x1f9c/0x2d60 fs/coredump.c:687 get_signal+0xed9/0x1f70 kernel/signal.c:2583 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 audit: type=1800 audit(1678043620.675:114): pid=11682 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="file0" dev="loop2" ino=4 res=0 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode+0x277/0x2d0 arch/x86/entry/common.c:198 retint_user+0x8/0x18 RIP: 0033:0x7f9f9385e101 Code: 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 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f RSP: 002b:00000000200001e0 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 00007f9f9397df80 RCX: 00007f9f9385e0f9 audit: type=1804 audit(1678043620.675:115): pid=11582 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir1490566483/syzkaller.8knyOd/22/file1/file0" dev="loop2" ino=4 res=1 RDX: 0000000020000200 RSI: 00000000200001e0 RDI: 0000000000000000 RBP: 00007f9f938b9ae9 R08: 0000000020000100 R09: 0000000020000100 R10: 0000000020000240 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd61b3b26f R14: 00007f9f91dd0300 R15: 0000000000022000 IPVS: ftp: loaded support on port[0] = 21 audit: type=1804 audit(1678043621.995:116): pid=11628 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir1608407307/syzkaller.DOMI3I/39/bus" dev="sda1" ino=14138 res=1 REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal REISERFS (device loop2): using ordered data mode reiserfs: using flush barriers REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 XFS (loop1): Mounting V4 Filesystem REISERFS (device loop2): checking transaction log (loop2) XFS (loop1): Ending clean mount XFS (loop1): Quotacheck needed: Please wait. XFS (loop1): Quotacheck: Done. audit: type=1804 audit(1678043622.265:117): pid=11617 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir2091168829/syzkaller.An6OVO/46/bus/bus" dev="loop1" ino=42 res=1 XFS (loop1): Unmounting Filesystem IPVS: ftp: loaded support on port[0] = 21 REISERFS (device loop2): Using r5 hash to sort names audit: type=1804 audit(1678043622.315:118): pid=11758 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir1608407307/syzkaller.DOMI3I/40/bus" dev="sda1" ino=14138 res=1 REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage. IPVS: ftp: loaded support on port[0] = 21 audit: type=1804 audit(1678043622.315:119): pid=11758 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir1608407307/syzkaller.DOMI3I/40/bus" dev="sda1" ino=14138 res=1 audit: type=1804 audit(1678043622.315:120): pid=11758 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir1608407307/syzkaller.DOMI3I/40/bus" dev="sda1" ino=14138 res=1 BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 BTRFS info (device loop0): using free space tree BTRFS info (device loop0): has skinny extents audit: type=1804 audit(1678043622.315:121): pid=11758 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir1608407307/syzkaller.DOMI3I/40/bus" dev="sda1" ino=14138 res=1 L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. nbd: must specify a size in bytes for the device BTRFS info (device loop1): using free space tree netlink: 52 bytes leftover after parsing attributes in process `syz-executor.2'. BTRFS info (device loop1): has skinny extents nbd: socks must be embedded in a SOCK_ITEM attr IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by syz-executor.0 (11931) FAT-fs (loop4): Unrecognized mount option "ÿÿÿÿÿÿÿÿ" or missing value BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by systemd-udevd (12031) sctp: [Deprecated]: syz-executor.4 (pid 11967) Use of int in maxseg socket option. Use struct sctp_assoc_value instead BTRFS info (device loop1): using free space tree BTRFS info (device loop1): has skinny extents IPVS: ftp: loaded support on port[0] = 21 BTRFS info (device loop0): using free space tree FAT-fs (loop4): Unrecognized mount option "ÿÿÿÿÿÿÿÿ" or missing value sctp: [Deprecated]: syz-executor.4 (pid 12119) Use of int in maxseg socket option. Use struct sctp_assoc_value instead BTRFS info (device loop0): has skinny extents BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor.1 (12131) BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by systemd-udevd (12164) FAT-fs (loop4): Unrecognized mount option "ÿÿÿÿÿÿÿÿ" or missing value XFS (loop1): Mounting V4 Filesystem sctp: [Deprecated]: syz-executor.2 (pid 12156) Use of int in maxseg socket option. Use struct sctp_assoc_value instead XFS (loop1): Ending clean mount syz-executor.1 (12204) used greatest stack depth: 21208 bytes left XFS (loop1): Unmounting Filesystem sctp: [Deprecated]: syz-executor.4 (pid 12197) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor.2 (pid 12316) Use of int in maxseg socket option. Use struct sctp_assoc_value instead REISERFS (device loop4): found reiserfs format "3.5" with non-standard journal REISERFS (device loop4): using ordered data mode reiserfs: using flush barriers REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop4): checking transaction log (loop4) XFS (loop1): Mounting V4 Filesystem XFS (loop1): Ending clean mount kauditd_printk_skb: 72 callbacks suppressed audit: type=1804 audit(1678043630.136:194): pid=12452 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir2091168829/syzkaller.An6OVO/53/file0/bus" dev="loop1" ino=41 res=1 audit: type=1804 audit(1678043630.176:195): pid=12456 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir2091168829/syzkaller.An6OVO/53/file0/bus" dev="loop1" ino=41 res=1 XFS (loop1): Unmounting Filesystem REISERFS (device loop4): Using r5 hash to sort names REISERFS (device loop4): using 3.5.x disk format sctp: [Deprecated]: syz-executor.2 (pid 12430) Use of int in maxseg socket option. Use struct sctp_assoc_value instead