======================================================
WARNING: possible circular locking dependency detected
4.14.290-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.0/11129 is trying to acquire lock:
((&strp->work)){+.+.}, at: [<ffffffff81367998>] flush_work+0x88/0x770 kernel/workqueue.c:2887
but task is already holding lock:
(sk_lock-AF_INET){+.+.}, at: [<ffffffff86815ca8>] lock_sock include/net/sock.h:1473 [inline]
(sk_lock-AF_INET){+.+.}, at: [<ffffffff86815ca8>] kcm_attach net/kcm/kcmsock.c:1390 [inline]
(sk_lock-AF_INET){+.+.}, at: [<ffffffff86815ca8>] kcm_attach_ioctl net/kcm/kcmsock.c:1490 [inline]
(sk_lock-AF_INET){+.+.}, at: [<ffffffff86815ca8>] kcm_ioctl+0x328/0xfb0 net/kcm/kcmsock.c:1701
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (sk_lock-AF_INET){+.+.}:
lock_sock_nested+0xb7/0x100 net/core/sock.c:2813
do_strp_work net/strparser/strparser.c:415 [inline]
strp_work+0x3e/0x100 net/strparser/strparser.c:434
process_one_work+0x793/0x14a0 kernel/workqueue.c:2117
worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
-> #0 ((&strp->work)){+.+.}:
lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
flush_work+0xad/0x770 kernel/workqueue.c:2890
__cancel_work_timer+0x321/0x460 kernel/workqueue.c:2965
strp_done+0x53/0xd0 net/strparser/strparser.c:519
kcm_attach net/kcm/kcmsock.c:1429 [inline]
kcm_attach_ioctl net/kcm/kcmsock.c:1490 [inline]
kcm_ioctl+0x828/0xfb0 net/kcm/kcmsock.c:1701
sock_do_ioctl net/socket.c:974 [inline]
sock_ioctl+0x2cc/0x4c0 net/socket.c:1071
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+0x46/0xbb
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(sk_lock-AF_INET);
lock((&strp->work));
lock(sk_lock-AF_INET);
lock((&strp->work));
*** DEADLOCK ***
1 lock held by syz-executor.0/11129:
#0: (sk_lock-AF_INET){+.+.}, at: [<ffffffff86815ca8>] lock_sock include/net/sock.h:1473 [inline]
#0: (sk_lock-AF_INET){+.+.}, at: [<ffffffff86815ca8>] kcm_attach net/kcm/kcmsock.c:1390 [inline]
#0: (sk_lock-AF_INET){+.+.}, at: [<ffffffff86815ca8>] kcm_attach_ioctl net/kcm/kcmsock.c:1490 [inline]
#0: (sk_lock-AF_INET){+.+.}, at: [<ffffffff86815ca8>] kcm_ioctl+0x328/0xfb0 net/kcm/kcmsock.c:1701
stack backtrace:
CPU: 0 PID: 11129 Comm: syz-executor.0 Not tainted 4.14.290-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
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
flush_work+0xad/0x770 kernel/workqueue.c:2890
__cancel_work_timer+0x321/0x460 kernel/workqueue.c:2965
strp_done+0x53/0xd0 net/strparser/strparser.c:519
kcm_attach net/kcm/kcmsock.c:1429 [inline]
kcm_attach_ioctl net/kcm/kcmsock.c:1490 [inline]
kcm_ioctl+0x828/0xfb0 net/kcm/kcmsock.c:1701
sock_do_ioctl net/socket.c:974 [inline]
sock_ioctl+0x2cc/0x4c0 net/socket.c:1071
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+0x46/0xbb
RIP: 0033:0x7fc0c5545279
RSP: 002b:00007fc0c3e99168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc0c5658050 RCX: 00007fc0c5545279
RDX: 0000000020000040 RSI: 00000000000089e0 RDI: 0000000000000003
RBP: 00007fc0c559f189 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd5c026bcf R14: 00007fc0c3e99300 R15: 0000000000022000
ieee80211 phy4: hwaddr 02:00:00:00:04:00 registered
kauditd_printk_skb: 8 callbacks suppressed
audit: type=1804 audit(1660362248.746:30): pid=11168 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir3347919138/syzkaller.mX24fJ/30/bus" dev="sda1" ino=13980 res=1
EXT4-fs error (device loop3): ext4_fill_super:4382: inode #2: comm syz-executor.3: iget: root inode unallocated
EXT4-fs (loop3): get root inode failed
EXT4-fs (loop3): mount failed
ieee80211 phy5: Selected rate control algorithm 'minstrel_ht'
audit: type=1800 audit(1660362248.746:31): pid=11168 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=13980 res=0
audit: type=1804 audit(1660362248.836:32): pid=11179 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir1565930098/syzkaller.eipeD5/37/bus" dev="sda1" ino=14026 res=1
EXT4-fs error (device loop3): ext4_fill_super:4382: inode #2: comm syz-executor.3: iget: root inode unallocated
EXT4-fs (loop3): get root inode failed
EXT4-fs (loop3): mount failed
audit: type=1800 audit(1660362248.846:33): pid=11179 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="bus" dev="sda1" ino=14026 res=0
ieee80211 phy5: hwaddr 02:00:00:00:05:00 registered
EXT4-fs error (device loop3): ext4_fill_super:4382: inode #2: comm syz-executor.3: iget: root inode unallocated
EXT4-fs (loop3): get root inode failed
EXT4-fs (loop3): mount failed
EXT4-fs error (device loop3): ext4_fill_super:4382: inode #2: comm syz-executor.3: iget: root inode unallocated
ieee80211 phy6: Selected rate control algorithm 'minstrel_ht'
EXT4-fs (loop3): get root inode failed
EXT4-fs (loop3): mount failed
audit: type=1804 audit(1660362249.626:34): pid=11227 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir3347919138/syzkaller.mX24fJ/31/bus" dev="sda1" ino=14027 res=1
ieee80211 phy6: hwaddr 02:00:00:00:06:00 registered
audit: type=1800 audit(1660362249.656:35): pid=11227 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14027 res=0
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
EXT4-fs error (device loop3): ext4_fill_super:4382: inode #2: comm syz-executor.3: iget: root inode unallocated
IPVS: ftp: loaded support on port[0] = 21
EXT4-fs (loop3): get root inode failed
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
EXT4-fs (loop3): mount failed
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy7: Selected rate control algorithm 'minstrel_ht'
EXT4-fs error (device loop3): ext4_fill_super:4382: inode #2: comm syz-executor.3: iget: root inode unallocated
EXT4-fs (loop3): get root inode failed
EXT4-fs (loop3): mount failed
ieee80211 phy7: hwaddr 02:00:00:00:07:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy8: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy8: hwaddr 02:00:00:00:08:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
ieee80211 phy9: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy9: hwaddr 02:00:00:00:09:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy10: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy10: hwaddr 02:00:00:00:0a:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy11: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy11: hwaddr 02:00:00:00:0b:00 registered
EXT4-fs (loop4): Unrecognized mount option "nl802154" or missing value
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
EXT4-fs (loop4): Unrecognized mount option "nl802154" or missing value
ieee80211 phy12: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy12: hwaddr 02:00:00:00:0c:00 registered
EXT4-fs (loop4): Unrecognized mount option "nl802154" or missing value
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy13: Selected rate control algorithm 'minstrel_ht'
EXT4-fs (loop4): Unrecognized mount option "nl802154" or missing value
ieee80211 phy13: hwaddr 02:00:00:00:0d:00 registered
EXT4-fs (loop4): Unrecognized mount option "nl802154" or missing value
ieee80211 phy14: Selected rate control algorithm 'minstrel_ht'
EXT4-fs (loop4): Unrecognized mount option "nl802154" or missing value
ieee80211 phy14: hwaddr 02:00:00:00:0e:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
EXT4-fs (loop4): Unrecognized mount option "nl802154" or missing value
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy15: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy15: hwaddr 02:00:00:00:0f:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy16: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy16: hwaddr 02:00:00:00:10:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy17: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy17: hwaddr 02:00:00:00:11:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy18: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy18: hwaddr 02:00:00:00:12:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy19: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy19: hwaddr 02:00:00:00:13:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy20: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy20: hwaddr 02:00:00:00:14:00 registered
ieee80211 phy21: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy21: hwaddr 02:00:00:00:15:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy22: Selected rate control algorithm 'minstrel_ht'
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
ieee80211 phy22: hwaddr 02:00:00:00:16:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy23: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy23: hwaddr 02:00:00:00:17:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy24: Selected rate control algorithm 'minstrel_ht'
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
ieee80211 phy24: hwaddr 02:00:00:00:18:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy25: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy25: hwaddr 02:00:00:00:19:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
syz-executor.2 uses obsolete (PF_INET,SOCK_PACKET)
ieee80211 phy26: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy26: hwaddr 02:00:00:00:1a:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy27: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy27: hwaddr 02:00:00:00:1b:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy28: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy28: hwaddr 02:00:00:00:1c:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ieee80211 phy29: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy29: hwaddr 02:00:00:00:1d:00 registered
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready