[hfsplus?] possible deadlock in hfsplus_ext_write_extent
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syzbot
Jan 29, 2023, 7:18:40 AM1/29/23
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11577059480000
kernel config: https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link: https://syzkaller.appspot.com/bug?extid=39640f5bf2f7a12fc936
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/98c0bdb4abb3/disk-3f8a27f9.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/ea228ff02669/vmlinux-3f8a27f9.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+39640f...@syzkaller.appspotmail.com
======================================================
WARNING: possible circular locking dependency detected
4.19.211-syzkaller #0 Not tainted
------------------------------------------------------
kworker/u4:0/8279 is trying to acquire lock:
00000000a51bf0b6 (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_ext_write_extent+0x7e/0x1f0 fs/hfsplus/extents.c:149
but task is already holding lock:
000000007ccf9892 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #7 ((work_completion)(&(&wb->dwork)->work)){+.+.}:
wb_shutdown+0x172/0x210 mm/backing-dev.c:374
bdi_unregister+0x169/0x610 mm/backing-dev.c:946
del_gendisk+0x7f6/0xa80 block/genhd.c:788
loop_remove drivers/block/loop.c:2066 [inline]
loop_control_ioctl drivers/block/loop.c:2165 [inline]
loop_control_ioctl+0x3b1/0x480 drivers/block/loop.c:2131
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #6 (loop_ctl_mutex){+.+.}:
lo_open+0x19/0xd0 drivers/block/loop.c:1771
__blkdev_get+0x372/0x1480 fs/block_dev.c:1494
blkdev_get+0xb0/0x940 fs/block_dev.c:1627
blkdev_open+0x202/0x290 fs/block_dev.c:1788
do_dentry_open+0x4aa/0x1160 fs/open.c:796
do_last fs/namei.c:3421 [inline]
path_openat+0x793/0x2df0 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
-> #5 (&bdev->bd_mutex){+.+.}:
blkdev_put+0x30/0x520 fs/block_dev.c:1839
btrfs_close_bdev fs/btrfs/volumes.c:1033 [inline]
btrfs_close_one_device fs/btrfs/volumes.c:1057 [inline]
close_fs_devices.part.0+0x24d/0x8e0 fs/btrfs/volumes.c:1085
close_fs_devices fs/btrfs/volumes.c:1117 [inline]
btrfs_close_devices+0x95/0x1f0 fs/btrfs/volumes.c:1103
open_ctree+0x26b/0x61e0 fs/btrfs/disk-io.c:3326
btrfs_fill_super fs/btrfs/super.c:1209 [inline]
btrfs_mount_root+0x12e5/0x1830 fs/btrfs/super.c:1613
mount_fs+0xa3/0x310 fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
vfs_kern_mount+0x3c/0x60 fs/namespace.c:951
btrfs_mount+0x23a/0xaa0 fs/btrfs/super.c:1681
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
-> #4 (&fs_devs->device_list_mutex){+.+.}:
btrfs_finish_chunk_alloc+0x27b/0xf90 fs/btrfs/volumes.c:4938
btrfs_create_pending_block_groups+0x242/0x590 fs/btrfs/extent-tree.c:10134
__btrfs_end_transaction+0x21a/0xb00 fs/btrfs/transaction.c:855
flush_space+0xa41/0xee0 fs/btrfs/extent-tree.c:4861
btrfs_async_reclaim_metadata_space+0x466/0x1050 fs/btrfs/extent-tree.c:4977
process_one_work+0x864/0x1570 kernel/workqueue.c:2153
worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
-> #3 (sb_internal#2){.+.+}:
sb_start_intwrite include/linux/fs.h:1626 [inline]
start_transaction+0xa37/0xf90 fs/btrfs/transaction.c:528
btrfs_dirty_inode+0xe3/0x210 fs/btrfs/inode.c:6165
btrfs_update_time+0x33b/0x3d0 fs/btrfs/inode.c:6207
update_time fs/inode.c:1675 [inline]
touch_atime+0x23c/0x2a0 fs/inode.c:1746
file_accessed include/linux/fs.h:2123 [inline]
btrfs_file_mmap+0x11b/0x160 fs/btrfs/file.c:2274
call_mmap include/linux/fs.h:1826 [inline]
mmap_region+0xc94/0x16b0 mm/mmap.c:1757
do_mmap+0x8e8/0x1080 mm/mmap.c:1530
do_mmap_pgoff include/linux/mm.h:2329 [inline]
vm_mmap_pgoff+0x197/0x200 mm/util.c:357
ksys_mmap_pgoff+0x298/0x5a0 mm/mmap.c:1580
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #2 (&mm->mmap_sem){++++}:
_copy_to_user+0x29/0x100 lib/usercopy.c:25
copy_to_user include/linux/uaccess.h:155 [inline]
filldir64+0x26e/0x430 fs/readdir.c:324
dir_emit_dot include/linux/fs.h:3432 [inline]
hfsplus_readdir+0x3c2/0xf20 fs/hfsplus/dir.c:159
iterate_dir+0x473/0x5c0 fs/readdir.c:51
ksys_getdents64+0x175/0x2b0 fs/readdir.c:357
__do_sys_getdents64 fs/readdir.c:376 [inline]
__se_sys_getdents64 fs/readdir.c:373 [inline]
__x64_sys_getdents64+0x6f/0xb0 fs/readdir.c:373
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #1 (&tree->tree_lock){+.+.}:
hfsplus_file_truncate+0xde7/0x1040 fs/hfsplus/extents.c:595
hfsplus_delete_inode+0x18d/0x220 fs/hfsplus/inode.c:419
hfsplus_unlink+0x595/0x820 fs/hfsplus/dir.c:405
hfsplus_rename+0xbe/0x200 fs/hfsplus/dir.c:545
vfs_rename+0x67e/0x1bc0 fs/namei.c:4479
do_renameat2+0xb59/0xc70 fs/namei.c:4629
__do_sys_rename fs/namei.c:4675 [inline]
__se_sys_rename fs/namei.c:4673 [inline]
__x64_sys_rename+0x5d/0x80 fs/namei.c:4673
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_ext_write_extent+0x7e/0x1f0 fs/hfsplus/extents.c:149
hfsplus_write_inode+0x1e/0x4b0 fs/hfsplus/super.c:153
write_inode fs/fs-writeback.c:1244 [inline]
__writeback_single_inode+0x733/0x11d0 fs/fs-writeback.c:1442
writeback_sb_inodes+0x537/0xef0 fs/fs-writeback.c:1647
wb_writeback+0x28d/0xcc0 fs/fs-writeback.c:1820
wb_do_writeback fs/fs-writeback.c:1965 [inline]
wb_workfn+0x29b/0x1250 fs/fs-writeback.c:2006
process_one_work+0x864/0x1570 kernel/workqueue.c:2153
worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
other info that might help us debug this:
Chain exists of:
&HFSPLUS_I(inode)->extents_lock --> loop_ctl_mutex --> (work_completion)(&(&wb->dwork)->work)
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock((work_completion)(&(&wb->dwork)->work));
lock(loop_ctl_mutex);
lock((work_completion)(&(&wb->dwork)->work));
lock(&HFSPLUS_I(inode)->extents_lock);
*** DEADLOCK ***
2 locks held by kworker/u4:0/8279:
#0: 000000009163b974 ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
#1: 000000007ccf9892 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
stack backtrace:
CPU: 0 PID: 8279 Comm: kworker/u4:0 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: writeback wb_workfn (flush-7:5)
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_ext_write_extent+0x7e/0x1f0 fs/hfsplus/extents.c:149
hfsplus_write_inode+0x1e/0x4b0 fs/hfsplus/super.c:153
write_inode fs/fs-writeback.c:1244 [inline]
__writeback_single_inode+0x733/0x11d0 fs/fs-writeback.c:1442
writeback_sb_inodes+0x537/0xef0 fs/fs-writeback.c:1647
wb_writeback+0x28d/0xcc0 fs/fs-writeback.c:1820
wb_do_writeback fs/fs-writeback.c:1965 [inline]
wb_workfn+0x29b/0x1250 fs/fs-writeback.c:2006
process_one_work+0x864/0x1570 kernel/workqueue.c:2153
worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
IPVS: ftp: loaded support on port[0] = 21
audit: type=1800 audit(1674994652.514:376): pid=21589 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=15171 res=0
audit: type=1800 audit(1674994652.514:377): pid=21589 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=15171 res=0
IPVS: ftp: loaded support on port[0] = 21
REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal
REISERFS (device loop0): using ordered data mode
reiserfs: using flush barriers
REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
REISERFS (device loop0): Using r5 hash to sort names
REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
CUSE: zero length info key specified
audit: type=1800 audit(1674994653.704:378): pid=21723 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=13889 res=0
attempt to access beyond end of device
audit: type=1800 audit(1674994653.704:379): pid=21723 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=13889 res=0
CUSE: zero length info key specified
loop5: rw=0, want=201326594, limit=1024
Buffer I/O error on dev loop5, logical block 100663296, async page read
hfsplus: unable to mark blocks free: error -5
hfsplus: can't free extent
IPVS: ftp: loaded support on port[0] = 21
CUSE: zero length info key specified
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy0 wpan0: encryption failed: -22
IPVS: ftp: loaded support on port[0] = 21
kauditd_printk_skb: 11 callbacks suppressed
audit: type=1804 audit(1674994654.494:391): pid=21875 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir87027356/syzkaller.AWDi4a/197/bus" dev="sda1" ino=14870 res=1
ieee802154 phy0 wpan0: encryption failed: -22
audit: type=1804 audit(1674994654.534:392): pid=21875 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir87027356/syzkaller.AWDi4a/197/bus" dev="sda1" ino=14870 res=1
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
device bond1 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond1: link is not ready
8021q: adding VLAN 0 to HW filter on device bond1
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
IPVS: ftp: loaded support on port[0] = 21
device bond2 entered promiscuous mode
IPVS: ftp: loaded support on port[0] = 21
IPv6: ADDRCONF(NETDEV_UP): bond2: link is not ready
8021q: adding VLAN 0 to HW filter on device bond2
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
device bond3 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond3: link is not ready
8021q: adding VLAN 0 to HW filter on device bond3
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
device bond1 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond1: link is not ready
8021q: adding VLAN 0 to HW filter on device bond1
F2FS-fs (loop0): Unrecognized mount option "n����ta" or missing value
F2FS-fs (loop0): Unrecognized mount option "n����ta" or missing value
audit: type=1800 audit(1674994655.724:393): pid=21926 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=13878 res=0
PM: Marking nosave pages: [mem 0x00000000-0x00000fff]
PM: Marking nosave pages: [mem 0x0009f000-0x000fffff]
PM: Marking nosave pages: [mem 0xbfffd000-0xffffffff]
PM: Basic memory bitmaps created
audit: type=1804 audit(1674994655.814:394): pid=21926 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir2153436814/syzkaller.TpgsTJ/211/bus" dev="sda1" ino=13878 res=1
audit: type=1804 audit(1674994655.844:395): pid=21926 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir2153436814/syzkaller.TpgsTJ/211/bus" dev="sda1" ino=13878 res=1
PM: Basic memory bitmaps freed
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
device bond2 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond2: link is not ready
8021q: adding VLAN 0 to HW filter on device bond2
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'.
device bond4 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond4: link is not ready
overlayfs: conflicting lowerdir path
8021q: adding VLAN 0 to HW filter on device bond4
ceph: device name is missing path (no : separator in /dev/sr0)
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
overlayfs: conflicting lowerdir path
ceph: device name is missing path (no : separator in /dev/sr0)
device bond3 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond3: link is not ready
8021q: adding VLAN 0 to HW filter on device bond3
F2FS-fs (loop0): Unrecognized mount option "n����ta" or missing value
F2FS-fs (loop0): Unrecognized mount option "n����ta" or missing value
audit: type=1800 audit(1674994657.634:396): pid=22251 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=13956 res=0
audit: type=1800 audit(1674994657.704:397): pid=22191 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=13881 res=0
PM: Marking nosave pages: [mem 0x00000000-0x00000fff]
PM: Marking nosave pages: [mem 0x0009f000-0x000fffff]
PM: Marking nosave pages: [mem 0xbfffd000-0xffffffff]
PM: Basic memory bitmaps created
audit: type=1804 audit(1674994657.774:398): pid=22251 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir87027356/syzkaller.AWDi4a/200/bus" dev="sda1" ino=13956 res=1
audit: type=1804 audit(1674994657.784:399): pid=22251 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir87027356/syzkaller.AWDi4a/200/bus" dev="sda1" ino=13956 res=1
audit: type=1804 audit(1674994657.804:400): pid=22357 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir2153436814/syzkaller.TpgsTJ/212/bus" dev="sda1" ino=13881 res=1
PM: Basic memory bitmaps freed
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
overlayfs: conflicting lowerdir path
PM: Marking nosave pages: [mem 0x00000000-0x00000fff]
overlayfs: failed to resolve './file0': -2
PM: Marking nosave pages: [mem 0x0009f000-0x000fffff]
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection.
PM: Marking nosave pages: [mem 0xbfffd000-0xffffffff]
device bond4 entered promiscuous mode
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
IPv6: ADDRCONF(NETDEV_UP): bond4: link is not ready
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
8021q: adding VLAN 0 to HW filter on device bond4
PM: Basic memory bitmaps created
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: conflicting lowerdir path
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
ceph: device name is missing path (no : separator in /dev/sr0)
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
device bond5 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond5: link is not ready
ceph: device name is missing path (no : separator in /dev/sr0)
8021q: adding VLAN 0 to HW filter on device bond5
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: conflicting lowerdir path
PM: Basic memory bitmaps freed
ceph: device name is missing path (no : separator in /dev/sr0)
device bond6 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond6: link is not ready
ieee802154 phy0 wpan0: encryption failed: -22
8021q: adding VLAN 0 to HW filter on device bond6
ip6_tunnel: non-ECT from fc01:0000:0000:0000:0000:0000:0000:0000 with DS=0x62
overlayfs: conflicting lowerdir path
ceph: device name is missing path (no : separator in /dev/sr0)
device bond7 entered promiscuous mode
overlayfs: conflicting lowerdir path
IPv6: ADDRCONF(NETDEV_UP): bond7: link is not ready
ieee802154 phy0 wpan0: encryption failed: -22
8021q: adding VLAN 0 to HW filter on device bond7
ceph: device name is missing path (no : separator in /dev/sr0)
ip6_tunnel: non-ECT from fc01:0000:0000:0000:0000:0000:0000:0000 with DS=0x62
F2FS-fs (loop2): invalid crc value
F2FS-fs (loop2): Mounted with checkpoint version = 48b305e4
nla_parse: 2 callbacks suppressed
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
ceph: device name is missing path (no : separator in /dev/sr0)
device bond8 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond8: link is not ready
8021q: adding VLAN 0 to HW filter on device bond8
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
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https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11577059480000
kernel config: https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link: https://syzkaller.appspot.com/bug?extid=39640f5bf2f7a12fc936
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/98c0bdb4abb3/disk-3f8a27f9.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/ea228ff02669/vmlinux-3f8a27f9.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+39640f...@syzkaller.appspotmail.com
======================================================
WARNING: possible circular locking dependency detected
4.19.211-syzkaller #0 Not tainted
------------------------------------------------------
kworker/u4:0/8279 is trying to acquire lock:
00000000a51bf0b6 (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_ext_write_extent+0x7e/0x1f0 fs/hfsplus/extents.c:149
but task is already holding lock:
000000007ccf9892 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #7 ((work_completion)(&(&wb->dwork)->work)){+.+.}:
wb_shutdown+0x172/0x210 mm/backing-dev.c:374
bdi_unregister+0x169/0x610 mm/backing-dev.c:946
del_gendisk+0x7f6/0xa80 block/genhd.c:788
loop_remove drivers/block/loop.c:2066 [inline]
loop_control_ioctl drivers/block/loop.c:2165 [inline]
loop_control_ioctl+0x3b1/0x480 drivers/block/loop.c:2131
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #6 (loop_ctl_mutex){+.+.}:
lo_open+0x19/0xd0 drivers/block/loop.c:1771
__blkdev_get+0x372/0x1480 fs/block_dev.c:1494
blkdev_get+0xb0/0x940 fs/block_dev.c:1627
blkdev_open+0x202/0x290 fs/block_dev.c:1788
do_dentry_open+0x4aa/0x1160 fs/open.c:796
do_last fs/namei.c:3421 [inline]
path_openat+0x793/0x2df0 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
-> #5 (&bdev->bd_mutex){+.+.}:
blkdev_put+0x30/0x520 fs/block_dev.c:1839
btrfs_close_bdev fs/btrfs/volumes.c:1033 [inline]
btrfs_close_one_device fs/btrfs/volumes.c:1057 [inline]
close_fs_devices.part.0+0x24d/0x8e0 fs/btrfs/volumes.c:1085
close_fs_devices fs/btrfs/volumes.c:1117 [inline]
btrfs_close_devices+0x95/0x1f0 fs/btrfs/volumes.c:1103
open_ctree+0x26b/0x61e0 fs/btrfs/disk-io.c:3326
btrfs_fill_super fs/btrfs/super.c:1209 [inline]
btrfs_mount_root+0x12e5/0x1830 fs/btrfs/super.c:1613
mount_fs+0xa3/0x310 fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
vfs_kern_mount+0x3c/0x60 fs/namespace.c:951
btrfs_mount+0x23a/0xaa0 fs/btrfs/super.c:1681
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
-> #4 (&fs_devs->device_list_mutex){+.+.}:
btrfs_finish_chunk_alloc+0x27b/0xf90 fs/btrfs/volumes.c:4938
btrfs_create_pending_block_groups+0x242/0x590 fs/btrfs/extent-tree.c:10134
__btrfs_end_transaction+0x21a/0xb00 fs/btrfs/transaction.c:855
flush_space+0xa41/0xee0 fs/btrfs/extent-tree.c:4861
btrfs_async_reclaim_metadata_space+0x466/0x1050 fs/btrfs/extent-tree.c:4977
process_one_work+0x864/0x1570 kernel/workqueue.c:2153
worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
-> #3 (sb_internal#2){.+.+}:
sb_start_intwrite include/linux/fs.h:1626 [inline]
start_transaction+0xa37/0xf90 fs/btrfs/transaction.c:528
btrfs_dirty_inode+0xe3/0x210 fs/btrfs/inode.c:6165
btrfs_update_time+0x33b/0x3d0 fs/btrfs/inode.c:6207
update_time fs/inode.c:1675 [inline]
touch_atime+0x23c/0x2a0 fs/inode.c:1746
file_accessed include/linux/fs.h:2123 [inline]
btrfs_file_mmap+0x11b/0x160 fs/btrfs/file.c:2274
call_mmap include/linux/fs.h:1826 [inline]
mmap_region+0xc94/0x16b0 mm/mmap.c:1757
do_mmap+0x8e8/0x1080 mm/mmap.c:1530
do_mmap_pgoff include/linux/mm.h:2329 [inline]
vm_mmap_pgoff+0x197/0x200 mm/util.c:357
ksys_mmap_pgoff+0x298/0x5a0 mm/mmap.c:1580
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #2 (&mm->mmap_sem){++++}:
_copy_to_user+0x29/0x100 lib/usercopy.c:25
copy_to_user include/linux/uaccess.h:155 [inline]
filldir64+0x26e/0x430 fs/readdir.c:324
dir_emit_dot include/linux/fs.h:3432 [inline]
hfsplus_readdir+0x3c2/0xf20 fs/hfsplus/dir.c:159
iterate_dir+0x473/0x5c0 fs/readdir.c:51
ksys_getdents64+0x175/0x2b0 fs/readdir.c:357
__do_sys_getdents64 fs/readdir.c:376 [inline]
__se_sys_getdents64 fs/readdir.c:373 [inline]
__x64_sys_getdents64+0x6f/0xb0 fs/readdir.c:373
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #1 (&tree->tree_lock){+.+.}:
hfsplus_file_truncate+0xde7/0x1040 fs/hfsplus/extents.c:595
hfsplus_delete_inode+0x18d/0x220 fs/hfsplus/inode.c:419
hfsplus_unlink+0x595/0x820 fs/hfsplus/dir.c:405
hfsplus_rename+0xbe/0x200 fs/hfsplus/dir.c:545
vfs_rename+0x67e/0x1bc0 fs/namei.c:4479
do_renameat2+0xb59/0xc70 fs/namei.c:4629
__do_sys_rename fs/namei.c:4675 [inline]
__se_sys_rename fs/namei.c:4673 [inline]
__x64_sys_rename+0x5d/0x80 fs/namei.c:4673
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_ext_write_extent+0x7e/0x1f0 fs/hfsplus/extents.c:149
hfsplus_write_inode+0x1e/0x4b0 fs/hfsplus/super.c:153
write_inode fs/fs-writeback.c:1244 [inline]
__writeback_single_inode+0x733/0x11d0 fs/fs-writeback.c:1442
writeback_sb_inodes+0x537/0xef0 fs/fs-writeback.c:1647
wb_writeback+0x28d/0xcc0 fs/fs-writeback.c:1820
wb_do_writeback fs/fs-writeback.c:1965 [inline]
wb_workfn+0x29b/0x1250 fs/fs-writeback.c:2006
process_one_work+0x864/0x1570 kernel/workqueue.c:2153
worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
other info that might help us debug this:
Chain exists of:
&HFSPLUS_I(inode)->extents_lock --> loop_ctl_mutex --> (work_completion)(&(&wb->dwork)->work)
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock((work_completion)(&(&wb->dwork)->work));
lock(loop_ctl_mutex);
lock((work_completion)(&(&wb->dwork)->work));
lock(&HFSPLUS_I(inode)->extents_lock);
*** DEADLOCK ***
2 locks held by kworker/u4:0/8279:
#0: 000000009163b974 ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
#1: 000000007ccf9892 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
stack backtrace:
CPU: 0 PID: 8279 Comm: kworker/u4:0 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: writeback wb_workfn (flush-7:5)
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_ext_write_extent+0x7e/0x1f0 fs/hfsplus/extents.c:149
hfsplus_write_inode+0x1e/0x4b0 fs/hfsplus/super.c:153
write_inode fs/fs-writeback.c:1244 [inline]
__writeback_single_inode+0x733/0x11d0 fs/fs-writeback.c:1442
writeback_sb_inodes+0x537/0xef0 fs/fs-writeback.c:1647
wb_writeback+0x28d/0xcc0 fs/fs-writeback.c:1820
wb_do_writeback fs/fs-writeback.c:1965 [inline]
wb_workfn+0x29b/0x1250 fs/fs-writeback.c:2006
process_one_work+0x864/0x1570 kernel/workqueue.c:2153
worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
IPVS: ftp: loaded support on port[0] = 21
audit: type=1800 audit(1674994652.514:376): pid=21589 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=15171 res=0
audit: type=1800 audit(1674994652.514:377): pid=21589 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=15171 res=0
IPVS: ftp: loaded support on port[0] = 21
REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal
REISERFS (device loop0): using ordered data mode
reiserfs: using flush barriers
REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
REISERFS (device loop0): Using r5 hash to sort names
REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
CUSE: zero length info key specified
audit: type=1800 audit(1674994653.704:378): pid=21723 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=13889 res=0
attempt to access beyond end of device
audit: type=1800 audit(1674994653.704:379): pid=21723 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=13889 res=0
CUSE: zero length info key specified
loop5: rw=0, want=201326594, limit=1024
Buffer I/O error on dev loop5, logical block 100663296, async page read
hfsplus: unable to mark blocks free: error -5
hfsplus: can't free extent
IPVS: ftp: loaded support on port[0] = 21
CUSE: zero length info key specified
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy0 wpan0: encryption failed: -22
IPVS: ftp: loaded support on port[0] = 21
kauditd_printk_skb: 11 callbacks suppressed
audit: type=1804 audit(1674994654.494:391): pid=21875 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir87027356/syzkaller.AWDi4a/197/bus" dev="sda1" ino=14870 res=1
ieee802154 phy0 wpan0: encryption failed: -22
audit: type=1804 audit(1674994654.534:392): pid=21875 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir87027356/syzkaller.AWDi4a/197/bus" dev="sda1" ino=14870 res=1
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
device bond1 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond1: link is not ready
8021q: adding VLAN 0 to HW filter on device bond1
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
IPVS: ftp: loaded support on port[0] = 21
device bond2 entered promiscuous mode
IPVS: ftp: loaded support on port[0] = 21
IPv6: ADDRCONF(NETDEV_UP): bond2: link is not ready
8021q: adding VLAN 0 to HW filter on device bond2
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
device bond3 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond3: link is not ready
8021q: adding VLAN 0 to HW filter on device bond3
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
device bond1 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond1: link is not ready
8021q: adding VLAN 0 to HW filter on device bond1
F2FS-fs (loop0): Unrecognized mount option "n����ta" or missing value
F2FS-fs (loop0): Unrecognized mount option "n����ta" or missing value
audit: type=1800 audit(1674994655.724:393): pid=21926 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=13878 res=0
PM: Marking nosave pages: [mem 0x00000000-0x00000fff]
PM: Marking nosave pages: [mem 0x0009f000-0x000fffff]
PM: Marking nosave pages: [mem 0xbfffd000-0xffffffff]
PM: Basic memory bitmaps created
audit: type=1804 audit(1674994655.814:394): pid=21926 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir2153436814/syzkaller.TpgsTJ/211/bus" dev="sda1" ino=13878 res=1
audit: type=1804 audit(1674994655.844:395): pid=21926 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir2153436814/syzkaller.TpgsTJ/211/bus" dev="sda1" ino=13878 res=1
PM: Basic memory bitmaps freed
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
device bond2 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond2: link is not ready
8021q: adding VLAN 0 to HW filter on device bond2
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'.
device bond4 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond4: link is not ready
overlayfs: conflicting lowerdir path
8021q: adding VLAN 0 to HW filter on device bond4
ceph: device name is missing path (no : separator in /dev/sr0)
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
overlayfs: conflicting lowerdir path
ceph: device name is missing path (no : separator in /dev/sr0)
device bond3 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond3: link is not ready
8021q: adding VLAN 0 to HW filter on device bond3
F2FS-fs (loop0): Unrecognized mount option "n����ta" or missing value
F2FS-fs (loop0): Unrecognized mount option "n����ta" or missing value
audit: type=1800 audit(1674994657.634:396): pid=22251 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=13956 res=0
audit: type=1800 audit(1674994657.704:397): pid=22191 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=13881 res=0
PM: Marking nosave pages: [mem 0x00000000-0x00000fff]
PM: Marking nosave pages: [mem 0x0009f000-0x000fffff]
PM: Marking nosave pages: [mem 0xbfffd000-0xffffffff]
PM: Basic memory bitmaps created
audit: type=1804 audit(1674994657.774:398): pid=22251 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir87027356/syzkaller.AWDi4a/200/bus" dev="sda1" ino=13956 res=1
audit: type=1804 audit(1674994657.784:399): pid=22251 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir87027356/syzkaller.AWDi4a/200/bus" dev="sda1" ino=13956 res=1
audit: type=1804 audit(1674994657.804:400): pid=22357 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir2153436814/syzkaller.TpgsTJ/212/bus" dev="sda1" ino=13881 res=1
PM: Basic memory bitmaps freed
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
overlayfs: conflicting lowerdir path
PM: Marking nosave pages: [mem 0x00000000-0x00000fff]
overlayfs: failed to resolve './file0': -2
PM: Marking nosave pages: [mem 0x0009f000-0x000fffff]
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection.
PM: Marking nosave pages: [mem 0xbfffd000-0xffffffff]
device bond4 entered promiscuous mode
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
IPv6: ADDRCONF(NETDEV_UP): bond4: link is not ready
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
8021q: adding VLAN 0 to HW filter on device bond4
PM: Basic memory bitmaps created
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: conflicting lowerdir path
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
ceph: device name is missing path (no : separator in /dev/sr0)
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
device bond5 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond5: link is not ready
ceph: device name is missing path (no : separator in /dev/sr0)
8021q: adding VLAN 0 to HW filter on device bond5
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: filesystem on './file0' not supported as upperdir
ceph: device name is missing path (no : separator in /dev/sr0)
overlayfs: filesystem on './file0' not supported as upperdir
overlayfs: conflicting lowerdir path
PM: Basic memory bitmaps freed
ceph: device name is missing path (no : separator in /dev/sr0)
device bond6 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond6: link is not ready
ieee802154 phy0 wpan0: encryption failed: -22
8021q: adding VLAN 0 to HW filter on device bond6
ip6_tunnel: non-ECT from fc01:0000:0000:0000:0000:0000:0000:0000 with DS=0x62
overlayfs: conflicting lowerdir path
ceph: device name is missing path (no : separator in /dev/sr0)
device bond7 entered promiscuous mode
overlayfs: conflicting lowerdir path
IPv6: ADDRCONF(NETDEV_UP): bond7: link is not ready
ieee802154 phy0 wpan0: encryption failed: -22
8021q: adding VLAN 0 to HW filter on device bond7
ceph: device name is missing path (no : separator in /dev/sr0)
ip6_tunnel: non-ECT from fc01:0000:0000:0000:0000:0000:0000:0000 with DS=0x62
F2FS-fs (loop2): invalid crc value
F2FS-fs (loop2): Mounted with checkpoint version = 48b305e4
nla_parse: 2 callbacks suppressed
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
ceph: device name is missing path (no : separator in /dev/sr0)
device bond8 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bond8: link is not ready
8021q: adding VLAN 0 to HW filter on device bond8
---
This report is generated by a bot. It may contain errors.
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