===================================== [ BUG: bad unlock balance detected! ] 4.4.114-ga81d322 #4 Not tainted ------------------------------------- syz-executor0/17588 is trying to release lock (mrt_lock) at: [] ipmr_mfc_seq_stop+0xe4/0x140 net/ipv6/ip6mr.c:553 but there are no more locks to release! other info that might help us debug this: 1 lock held by syz-executor0/17588: #0: (&p->lock){+.+.+.}, at: [] seq_read+0xdd/0x1270 fs/seq_file.c:178 stack backtrace: CPU: 1 PID: 17588 Comm: syz-executor0 Not tainted 4.4.114-ga81d322 #4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 060d0392019e721a ffff8800ba8cf9f8 ffffffff81d0394d ffffffff84771c98 ffff8800b15e1800 ffffffff833c7524 ffffffff84771c98 ffff8800b15e20a8 ffff8800ba8cfa28 ffffffff81233354 dffffc0000000000 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] print_unlock_imbalance_bug+0x174/0x1a0 kernel/locking/lockdep.c:3266 [] __lock_release kernel/locking/lockdep.c:3408 [inline] [] lock_release+0x72a/0xc10 kernel/locking/lockdep.c:3611 [] __raw_read_unlock include/linux/rwlock_api_smp.h:225 [inline] [] _raw_read_unlock+0x1a/0x50 kernel/locking/spinlock.c:255 [] ipmr_mfc_seq_stop+0xe4/0x140 net/ipv6/ip6mr.c:553 [] seq_read+0xa80/0x1270 fs/seq_file.c:283 [] proc_reg_read+0xef/0x170 fs/proc/inode.c:202 [] __vfs_read+0x103/0x440 fs/read_write.c:432 [] vfs_read+0x123/0x3a0 fs/read_write.c:454 [] SYSC_pread64 fs/read_write.c:607 [inline] [] SyS_pread64+0x13f/0x170 fs/read_write.c:594 [] entry_SYSCALL_64_fastpath+0x1c/0x98 device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode netlink: 64 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 64 bytes leftover after parsing attributes in process `syz-executor0'. device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode netlink: 716 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 716 bytes leftover after parsing attributes in process `syz-executor3'. device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=56 sclass=netlink_route_socket SELinux: unrecognized netlink message: protocol=0 nlmsg_type=56 sclass=netlink_route_socket device gre0 entered promiscuous mode audit: type=1400 audit(1517527677.576:55): avc: denied { create } for pid=19421 comm="syz-executor3" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_iscsi_socket permissive=1 device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode