netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'. REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. ====================================================== WARNING: possible circular locking dependency detected 4.14.302-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/10807 is trying to acquire lock: (&journal->j_mutex){+.+.}, at: [] reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:816 [inline] (&journal->j_mutex){+.+.}, at: [] lock_journal fs/reiserfs/journal.c:537 [inline] (&journal->j_mutex){+.+.}, at: [] do_journal_begin_r+0x26b/0xde0 fs/reiserfs/journal.c:3054 but task is already holding lock: netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. (sb_writers#23){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] (sb_writers#23){.+.+}, at: [] mnt_want_write_file+0xfd/0x3b0 fs/namespace.c:497 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (sb_writers#23){.+.+}: percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] __sb_start_write+0x64/0x260 fs/super.c:1342 sb_start_write include/linux/fs.h:1551 [inline] mnt_want_write_file+0xfd/0x3b0 fs/namespace.c:497 reiserfs_ioctl+0x18e/0x8b0 fs/reiserfs/ioctl.c:110 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 -> #1 (&sbi->lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 reiserfs_write_lock_nested+0x59/0xd0 fs/reiserfs/lock.c:78 reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:817 [inline] lock_journal fs/reiserfs/journal.c:537 [inline] do_journal_begin_r+0x276/0xde0 fs/reiserfs/journal.c:3054 journal_begin+0x162/0x3d0 fs/reiserfs/journal.c:3262 reiserfs_fill_super+0x18f4/0x2990 fs/reiserfs/super.c:2117 mount_bdev+0x2b3/0x360 fs/super.c:1134 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 -> #0 (&journal->j_mutex){+.+.}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:816 [inline] lock_journal fs/reiserfs/journal.c:537 [inline] do_journal_begin_r+0x26b/0xde0 fs/reiserfs/journal.c:3054 journal_begin+0x162/0x3d0 fs/reiserfs/journal.c:3262 reiserfs_dirty_inode+0xd9/0x200 fs/reiserfs/super.c:716 __mark_inode_dirty+0x11e/0xf40 fs/fs-writeback.c:2134 mark_inode_dirty include/linux/fs.h:2026 [inline] reiserfs_ioctl+0x6f6/0x8b0 fs/reiserfs/ioctl.c:118 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 other info that might help us debug this: Chain exists of: &journal->j_mutex --> &sbi->lock --> sb_writers#23 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sb_writers#23); lock(&sbi->lock); lock(sb_writers#23); lock(&journal->j_mutex); *** DEADLOCK *** 1 lock held by syz-executor.0/10807: #0: (sb_writers#23){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#23){.+.+}, at: [] mnt_want_write_file+0xfd/0x3b0 fs/namespace.c:497 stack backtrace: CPU: 0 PID: 10807 Comm: syz-executor.0 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258 check_prev_add kernel/locking/lockdep.c:1905 [inline] check_prevs_add kernel/locking/lockdep.c:2022 [inline] validate_chain kernel/locking/lockdep.c:2464 [inline] __lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:816 [inline] lock_journal fs/reiserfs/journal.c:537 [inline] do_journal_begin_r+0x26b/0xde0 fs/reiserfs/journal.c:3054 journal_begin+0x162/0x3d0 fs/reiserfs/journal.c:3262 reiserfs_dirty_inode+0xd9/0x200 fs/reiserfs/super.c:716 __mark_inode_dirty+0x11e/0xf40 fs/fs-writeback.c:2134 mark_inode_dirty include/linux/fs.h:2026 [inline] reiserfs_ioctl+0x6f6/0x8b0 fs/reiserfs/ioctl.c:118 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fa135c290a9 RSP: 002b:00007fa13419b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa135d48f80 RCX: 00007fa135c290a9 RDX: 0000000020000380 RSI: 0000000040087602 RDI: 0000000000000004 RBP: 00007fa135c84ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd5707b3ef R14: 00007fa13419b300 R15: 0000000000022000 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. team1: Device vlan2 is already an upper device of the team interface netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. team2: Device vlan2 is already an upper device of the team interface netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'. team3: Device vlan2 is already an upper device of the team interface team4: Device vlan2 is already an upper device of the team interface JFS: discard option not supported on device JFS: charset not found JFS: discard option not supported on device JFS: charset not found overlayfs: fs on '/' does not support file handles, falling back to index=off. audit: type=1800 audit(1671729922.673:83): pid=11261 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="file0" dev="sda1" ino=14195 res=0 audit: type=1804 audit(1671729922.673:84): pid=11261 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir4039961515/syzkaller.C6ITta/80/file0" dev="sda1" ino=14195 res=1 overlayfs: fs on '/' does not support file handles, falling back to index=off. JFS: discard option not supported on device JFS: charset not found overlayfs: fs on '/' does not support file handles, falling back to index=off. overlayfs: fs on '/' does not support file handles, falling back to index=off. JFS: discard option not supported on device audit: type=1800 audit(1671729923.543:85): pid=11300 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="file0" dev="sda1" ino=14138 res=0 JFS: charset not found audit: type=1804 audit(1671729923.553:86): pid=11300 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir4039961515/syzkaller.C6ITta/81/file0" dev="sda1" ino=14138 res=1 overlayfs: fs on '/' does not support file handles, falling back to index=off. overlayfs: fs on '/' does not support file handles, falling back to index=off. audit: type=1800 audit(1671729924.413:87): pid=11355 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="file0" dev="sda1" ino=14211 res=0 audit: type=1804 audit(1671729924.433:88): pid=11355 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir4039961515/syzkaller.C6ITta/82/file0" dev="sda1" ino=14211 res=1 overlayfs: fs on '/' does not support file handles, falling back to index=off. device vxlan0 entered promiscuous mode device vxlan0 entered promiscuous mode EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs error (device loop0): ext4_find_dest_de:1877: inode #2: block 3: comm syz-executor.0: bad entry in directory: rec_len % 4 != 0 - offset=92, inode=16, rec_len=1023, name_len=5, size=2048 audit: type=1800 audit(1671729925.283:89): pid=11441 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="file0" dev="sda1" ino=14201 res=0 device vxlan0 entered promiscuous mode audit: type=1804 audit(1671729925.303:90): pid=11441 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir4039961515/syzkaller.C6ITta/83/file0" dev="sda1" ino=14201 res=1 device vxlan0 entered promiscuous mode EXT4-fs (loop0): Ignoring removed mblk_io_submit option EXT4-fs (loop0): Ignoring removed nomblk_io_submit option EXT4-fs (loop0): mounted filesystem without journal. Opts: noquota,mblk_io_submit,bsdgroups,grpquota,nomblk_io_submit,,errors=continue EXT4-fs (loop0): Ignoring removed mblk_io_submit option EXT4-fs (loop0): Ignoring removed nomblk_io_submit option EXT4-fs (loop0): mounted filesystem without journal. Opts: noquota,mblk_io_submit,bsdgroups,grpquota,nomblk_io_submit,,errors=continue EXT4-fs (loop0): Ignoring removed mblk_io_submit option EXT4-fs (loop0): Ignoring removed nomblk_io_submit option EXT4-fs (loop0): mounted filesystem without journal. Opts: noquota,mblk_io_submit,bsdgroups,grpquota,nomblk_io_submit,,errors=continue EXT4-fs (loop0): Ignoring removed mblk_io_submit option EXT4-fs (loop0): Ignoring removed nomblk_io_submit option EXT4-fs (loop0): mounted filesystem without journal. Opts: noquota,mblk_io_submit,bsdgroups,grpquota,nomblk_io_submit,,errors=continue EXT4-fs (loop0): Ignoring removed mblk_io_submit option EXT4-fs (loop0): Ignoring removed nomblk_io_submit option EXT4-fs (loop0): mounted filesystem without journal. Opts: noquota,mblk_io_submit,bsdgroups,grpquota,nomblk_io_submit,,errors=continue EXT4-fs (loop0): Ignoring removed mblk_io_submit option EXT4-fs (loop0): Ignoring removed nomblk_io_submit option EXT4-fs (loop0): mounted filesystem without journal. Opts: noquota,mblk_io_submit,bsdgroups,grpquota,nomblk_io_submit,,errors=continue