======================================================
WARNING: possible circular locking dependency detected
4.14.291-syzkaller #0 Not tainted
------------------------------------------------------
kworker/u4:3/339 is trying to acquire lock:
((&(&cp->cp_send_w)->work)){+.+.}, at: [<ffffffff81367998>] flush_work+0x88/0x770 kernel/workqueue.c:2887
but task is already holding lock:
(k-sk_lock-AF_INET){+.+.}, at: [<ffffffff869c6841>] lock_sock include/net/sock.h:1473 [inline]
(k-sk_lock-AF_INET){+.+.}, at: [<ffffffff869c6841>] rds_tcp_reset_callbacks+0x181/0x450 net/rds/tcp.c:165
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (k-sk_lock-AF_INET){+.+.}:
lock_sock_nested+0xb7/0x100 net/core/sock.c:2813
lock_sock include/net/sock.h:1473 [inline]
do_tcp_setsockopt.constprop.0+0xfb/0x1c10 net/ipv4/tcp.c:2564
tcp_setsockopt net/ipv4/tcp.c:2832 [inline]
tcp_setsockopt+0xa7/0xc0 net/ipv4/tcp.c:2824
kernel_setsockopt+0xfb/0x1b0 net/socket.c:3396
rds_tcp_cork net/rds/tcp_send.c:43 [inline]
rds_tcp_xmit_path_prepare+0xaf/0xe0 net/rds/tcp_send.c:50
rds_send_xmit+0x1ae/0x1c00 net/rds/send.c:187
rds_send_worker+0x6d/0x240 net/rds/threads.c:189
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 ((&(&cp->cp_send_w)->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
rds_tcp_reset_callbacks+0x18d/0x450 net/rds/tcp.c:167
rds_tcp_accept_one+0x61a/0x8b0 net/rds/tcp_listen.c:194
rds_tcp_accept_worker+0x4d/0x70 net/rds/tcp.c:407
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
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(k-sk_lock-AF_INET);
lock((&(&cp->cp_send_w)->work));
lock(k-sk_lock-AF_INET);
lock((&(&cp->cp_send_w)->work));
*** DEADLOCK ***
4 locks held by kworker/u4:3/339:
#0: ("%s""krdsd"){+.+.}, at: [<ffffffff81364eb0>] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2088
#1: ((&rtn->rds_tcp_accept_w)){+.+.}, at: [<ffffffff81364ee6>] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2092
#2: (&tc->t_conn_path_lock){+.+.}, at: [<ffffffff869c8632>] rds_tcp_accept_one+0x502/0x8b0 net/rds/tcp_listen.c:186
#3: (k-sk_lock-AF_INET){+.+.}, at: [<ffffffff869c6841>] lock_sock include/net/sock.h:1473 [inline]
#3: (k-sk_lock-AF_INET){+.+.}, at: [<ffffffff869c6841>] rds_tcp_reset_callbacks+0x181/0x450 net/rds/tcp.c:165
stack backtrace:
CPU: 1 PID: 339 Comm: kworker/u4:3 Not tainted 4.14.291-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Workqueue: krdsd rds_tcp_accept_worker
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
rds_tcp_reset_callbacks+0x18d/0x450 net/rds/tcp.c:167
rds_tcp_accept_one+0x61a/0x8b0 net/rds/tcp_listen.c:194
rds_tcp_accept_worker+0x4d/0x70 net/rds/tcp.c:407
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
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19
caif:caif_disconnect_client(): nothing to disconnect
chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT
chnl_net:chnl_net_open(): state disconnected
A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check.
ip_tables: iptables: counters copy to user failed while replacing table
ip_tables: iptables: counters copy to user failed while replacing table
ip_tables: iptables: counters copy to user failed while replacing table
ip_tables: iptables: counters copy to user failed while replacing table
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ip_tables: iptables: counters copy to user failed while replacing table
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
ip_tables: iptables: counters copy to user failed while replacing table
chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19
caif:caif_disconnect_client(): nothing to disconnect
chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT
ip_tables: iptables: counters copy to user failed while replacing table
chnl_net:chnl_net_open(): state disconnected
A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check.
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
ip_tables: iptables: counters copy to user failed while replacing table
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19
caif:caif_disconnect_client(): nothing to disconnect
chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT
chnl_net:chnl_net_open(): state disconnected
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
audit: type=1800 audit(1661947849.726:88): pid=16399 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14418 res=0
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19
caif:caif_disconnect_client(): nothing to disconnect
chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT
chnl_net:chnl_net_open(): state disconnected
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19
caif:caif_disconnect_client(): nothing to disconnect
chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT
chnl_net:chnl_net_open(): state disconnected
audit: type=1804 audit(1661947851.346:89): pid=16399 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="bus" dev="sda1" ino=14418 res=1
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
audit: type=1800 audit(1661947851.476:90): pid=16424 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14726 res=0
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19
caif:caif_disconnect_client(): nothing to disconnect
audit: type=1804 audit(1661947851.476:91): pid=16424 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="bus" dev="sda1" ino=14726 res=1
chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT
chnl_net:chnl_net_open(): state disconnected
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19
caif:caif_disconnect_client(): nothing to disconnect
chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT
chnl_net:chnl_net_open(): state disconnected
audit: type=1800 audit(1661947852.486:92): pid=16440 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14713 res=0
audit: type=1804 audit(1661947852.516:93): pid=16440 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="bus" dev="sda1" ino=14713 res=1
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
audit: type=1800 audit(1661947852.696:94): pid=16455 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14679 res=0
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
audit: type=1804 audit(1661947852.726:95): pid=16455 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="bus" dev="sda1" ino=14679 res=1
overlayfs: failed to clone upperpath
audit: type=1800 audit(1661947853.236:96): pid=16509 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="file0" dev="sda1" ino=14727 res=0
overlayfs: failed to clone upperpath
overlayfs: failed to clone upperpath
overlayfs: failed to clone upperpath
EXT4-fs error (device sda1): swap_inode_boot_loader:114: inode #5: comm syz-executor.5: iget: checksum invalid
audit: type=1800 audit(1661947854.726:97): pid=16544 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="file0" dev="sda1" ino=14731 res=0
audit: type=1800 audit(1661947854.766:98): pid=16545 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="file0" dev="sda1" ino=14732 res=0
audit: type=1800 audit(1661947855.546:99): pid=16546 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.3" name="file0" dev="sda1" ino=14733 res=0
EXT4-fs error (device sda1): swap_inode_boot_loader:114: inode #5: comm syz-executor.5: iget: checksum invalid