Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! File: /root/syzkaller-testdir3428974316/syzkaller.Nxe2bL/192/bus PID: 19357 Comm: syz-executor.1 ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.4/19425 is trying to acquire lock: 00000000ccd8b839 (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_file_extend+0x1bb/0xf40 fs/hfsplus/extents.c:457 but task is already holding lock: 000000001a67f044 (&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 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 -> #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_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); lock(&HFSPLUS_I(inode)->extents_lock); lock(&tree->tree_lock); lock(&HFSPLUS_I(inode)->extents_lock); *** DEADLOCK *** 5 locks held by syz-executor.4/19425: #0: 0000000069bc2bf4 (sb_writers#28){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 0000000069bc2bf4 (sb_writers#28){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000f63a47c8 (&type->i_mutex_dir_key#15/1){+.+.}, at: inode_lock_nested include/linux/fs.h:783 [inline] #1: 00000000f63a47c8 (&type->i_mutex_dir_key#15/1){+.+.}, at: do_unlinkat+0x27d/0x660 fs/namei.c:4051 #2: 000000001075021c (&sb->s_type->i_mutex_key#32){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001075021c (&sb->s_type->i_mutex_key#32){+.+.}, at: vfs_unlink+0xca/0x4e0 fs/namei.c:3993 #3: 000000003d24fc92 (&sbi->vh_mutex){+.+.}, at: hfsplus_unlink+0x140/0x820 fs/hfsplus/dir.c:370 #4: 000000001a67f044 (&tree->tree_lock){+.+.}, at: hfsplus_find_init+0x1b7/0x220 fs/hfsplus/bfind.c:30 stack backtrace: CPU: 1 PID: 19425 Comm: syz-executor.4 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_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 RIP: 0033:0x7fb993820101 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:00000000200003f0 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 00007fb9939402c0 RCX: 00007fb9938200f9 RDX: 0000000020000400 RSI: 00000000200003f0 RDI: 0000000000000000 RBP: 00007fb99387bae9 R08: 0000000020000480 R09: 0000000020000480 R10: 0000000020000440 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdef627aef R14: 00007fb991d0e300 R15: 0000000000022000 capability: warning: `syz-executor.3' uses deprecated v2 capabilities in a way that may be insecure ieee80211 ©,í…×: Selected rate control algorithm 'minstrel_ht' audit: type=1804 audit(1676277577.247:192): pid=19451 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir696243573/syzkaller.HQdXrC/190/bus" dev="sda1" ino=14975 res=1 ieee80211 ©,í…×: Selected rate control algorithm 'minstrel_ht' audit: type=1804 audit(1676277577.267:193): pid=19451 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.4" name="/root/syzkaller-testdir696243573/syzkaller.HQdXrC/190/bus" dev="sda1" ino=14975 res=1 audit: type=1804 audit(1676277577.297:194): pid=19451 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.4" name="/root/syzkaller-testdir696243573/syzkaller.HQdXrC/190/bus" dev="sda1" ino=14975 res=1 audit: type=1804 audit(1676277577.307:195): pid=19451 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir696243573/syzkaller.HQdXrC/190/bus" dev="sda1" ino=14975 res=1 ieee80211 phy29: Selected rate control algorithm 'minstrel_ht' ieee80211 phy30: Selected rate control algorithm 'minstrel_ht' audit: type=1804 audit(1676277578.027:196): pid=19577 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir696243573/syzkaller.HQdXrC/191/bus" dev="sda1" ino=14986 res=1 dccp_close: ABORT with 67 bytes unread audit: type=1804 audit(1676277578.067:197): pid=19571 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir2821350342/syzkaller.V02mVq/204/bus" dev="sda1" ino=13885 res=1 audit: type=1804 audit(1676277578.067:198): pid=19571 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir2821350342/syzkaller.V02mVq/204/bus" dev="sda1" ino=13885 res=1 EXT4-fs (loop4): Unrecognized mount option "./bus" or missing value audit: type=1804 audit(1676277578.087:199): pid=19593 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.4" name="/root/syzkaller-testdir696243573/syzkaller.HQdXrC/191/bus" dev="sda1" ino=14986 res=1 audit: type=1804 audit(1676277578.097:200): pid=19577 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir696243573/syzkaller.HQdXrC/191/bus" dev="sda1" ino=14986 res=1 audit: type=1804 audit(1676277578.097:201): pid=19571 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir2821350342/syzkaller.V02mVq/204/bus" dev="sda1" ino=13885 res=1 netlink: 100 bytes leftover after parsing attributes in process `syz-executor.2'. F2FS-fs (loop3): invalid crc value F2FS-fs (loop3): Found nat_bits in checkpoint F2FS-fs (loop3): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix. F2FS-fs (loop3): Mounted with checkpoint version = 48b305e4 F2FS-fs (loop3): Unrecognized mount option "./bus" or missing value F2FS-fs (loop3): Unrecognized mount option "./bus" or missing value IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 F2FS-fs (loop3): invalid crc value F2FS-fs (loop3): Found nat_bits in checkpoint F2FS-fs (loop3): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix. F2FS-fs (loop3): Mounted with checkpoint version = 48b305e4 IPVS: ftp: loaded support on port[0] = 21 kauditd_printk_skb: 34 callbacks suppressed audit: type=1804 audit(1676277582.268:236): pid=19859 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir3428974316/syzkaller.Nxe2bL/199/bus" dev="sda1" ino=14007 res=1 audit: type=1804 audit(1676277582.308:237): pid=19859 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir3428974316/syzkaller.Nxe2bL/199/bus" dev="sda1" ino=14007 res=1 audit: type=1804 audit(1676277582.318:238): pid=19859 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir3428974316/syzkaller.Nxe2bL/199/bus" dev="sda1" ino=14007 res=1 audit: type=1804 audit(1676277582.318:239): pid=19859 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir3428974316/syzkaller.Nxe2bL/199/bus" dev="sda1" ino=14007 res=1 audit: type=1804 audit(1676277582.518:240): pid=19899 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir4069804729/syzkaller.PdNvvX/227/bus" dev="sda1" ino=13914 res=1 audit: type=1804 audit(1676277582.518:241): pid=19899 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir4069804729/syzkaller.PdNvvX/227/bus" dev="sda1" ino=13914 res=1 audit: type=1804 audit(1676277582.558:242): pid=19899 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir4069804729/syzkaller.PdNvvX/227/bus" dev="sda1" ino=13914 res=1 audit: type=1804 audit(1676277582.568:243): pid=19899 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir4069804729/syzkaller.PdNvvX/227/bus" dev="sda1" ino=13914 res=1 IPVS: ftp: loaded support on port[0] = 21 audit: type=1804 audit(1676277583.138:244): pid=19922 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir2821350342/syzkaller.V02mVq/209/bus" dev="sda1" ino=13913 res=1 audit: type=1804 audit(1676277583.168:245): pid=19922 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir2821350342/syzkaller.V02mVq/209/bus" dev="sda1" ino=13913 res=1 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 f2fs_msg: 4 callbacks suppressed F2FS-fs (loop3): invalid crc value F2FS-fs (loop3): Found nat_bits in checkpoint F2FS-fs (loop3): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix. F2FS-fs (loop3): Mounted with checkpoint version = 48b305e4 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 F2FS-fs (loop3): invalid crc value F2FS-fs (loop3): Found nat_bits in checkpoint