netlink: 11 bytes leftover after parsing attributes in process `syz-executor2'. ===================================== [ BUG: bad unlock balance detected! ] 4.9.67-gf26d3c7 #106 Not tainted ------------------------------------- syz-executor6/15794 is trying to release lock ([ 270.502404] netlink: 11 bytes leftover after parsing attributes in process `syz-executor2'. device gre0 entered promiscuous mode mrt_lock) at: but there are no more locks to release! other info that might help us debug this: 1 lock held by syz-executor6/15794: #0: (&p->lock){+.+.+.}, at: [] seq_read+0xdd/0x1290 fs/seq_file.c:178 stack backtrace: CPU: 0 PID: 15794 Comm: syz-executor6 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c90ef8e8 ffffffff81d906e9 ffffffff849ae8f8 ffff8801d88ac800 ffffffff834dec54 ffffffff849ae8f8 ffff8801d88ad088 ffff8801c90ef918 ffffffff812353f4 dffffc0000000000 ffffffff849ae8f8 00000000ffffffff Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] print_unlock_imbalance_bug+0x174/0x1a0 kernel/locking/lockdep.c:3398 [] __lock_release kernel/locking/lockdep.c:3540 [inline] [] lock_release+0x6f8/0xb80 kernel/locking/lockdep.c:3775 [] __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+0xa83/0x1290 fs/seq_file.c:283 [] proc_reg_read+0xef/0x170 fs/proc/inode.c:202 [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 [] do_readv+0xe6/0x250 fs/read_write.c:924 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] entry_SYSCALL_64_fastpath+0x23/0xc6 netlink: 11 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor2'. pktgen: kernel_thread() failed for cpu 0 pktgen: Cannot create thread for cpu 0 (-4) pktgen: kernel_thread() failed for cpu 1 pktgen: Cannot create thread for cpu 1 (-4) pktgen: Initialization failed for all threads binder: 15832:15834 ioctl c0086420 20ee6000 returned -22 binder: 15832:15834 ERROR: BC_REGISTER_LOOPER called without request netlink: 11 bytes leftover after parsing attributes in process `syz-executor0'. binder_alloc: 15832: binder_alloc_buf, no vma binder: 15832:15849 transaction failed 29189/-3, size 0-0 line 3130 binder: 15832:15858 ioctl c0086420 20ee6000 returned -22 binder: BINDER_SET_CONTEXT_MGR already set binder: 15832:15849 ioctl 40046207 0 returned -16 binder: 15832:15865 ERROR: BC_REGISTER_LOOPER called without request netlink: 13 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor0'. binder_alloc: 15832: binder_alloc_buf, no vma binder: 15832:15858 transaction failed 29189/-3, size 0-0 line 3130 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29189 netlink: 5 bytes leftover after parsing attributes in process `syz-executor1'. device lo left promiscuous mode Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable