=====================================
sg_write: data in/out 327644/32 bytes for SCSI command 0x4-- guessing data in;
   program syz-executor4 not setting count and/or reply_len properly
[ BUG: bad unlock balance detected! ]
4.9.67-gf26d3c7 #106 Not tainted
-------------------------------------
syz-executor2/17341 is trying to release lock ([  104.952708] 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-executor2/17341:
 #0:  (&p->lock){+.+.+.}, at: [<ffffffff815e4cdd>] seq_read+0xdd/0x1290 fs/seq_file.c:178

stack backtrace:
CPU: 1 PID: 17341 Comm: syz-executor2 Not tainted 4.9.67-gf26d3c7 #106
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c88ff8e8 ffffffff81d906e9 ffffffff849ae8f8 ffff8801d5a28000
 ffffffff834dec54 ffffffff849ae8f8 ffff8801d5a28888 ffff8801c88ff918
 ffffffff812353f4 dffffc0000000000 ffffffff849ae8f8 00000000ffffffff
Call Trace:
 [<ffffffff81d906e9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d906e9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff812353f4>] print_unlock_imbalance_bug+0x174/0x1a0 kernel/locking/lockdep.c:3398
 [<ffffffff8123dec8>] __lock_release kernel/locking/lockdep.c:3540 [inline]
 [<ffffffff8123dec8>] lock_release+0x6f8/0xb80 kernel/locking/lockdep.c:3775
 [<ffffffff838a951a>] __raw_read_unlock include/linux/rwlock_api_smp.h:225 [inline]
 [<ffffffff838a951a>] _raw_read_unlock+0x1a/0x50 kernel/locking/spinlock.c:255
 [<ffffffff834dec54>] ipmr_mfc_seq_stop+0xe4/0x140 net/ipv6/ip6mr.c:553
 [<ffffffff815e5683>] seq_read+0xa83/0x1290 fs/seq_file.c:283
 [<ffffffff816be32f>] proc_reg_read+0xef/0x170 fs/proc/inode.c:202
 [<ffffffff81568cb1>] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714
 [<ffffffff8156cb20>] do_loop_readv_writev fs/read_write.c:880 [inline]
 [<ffffffff8156cb20>] do_readv_writev+0x520/0x750 fs/read_write.c:874
 [<ffffffff8156cdd4>] vfs_readv+0x84/0xc0 fs/read_write.c:898
 [<ffffffff8156cef6>] do_readv+0xe6/0x250 fs/read_write.c:924
 [<ffffffff815703e7>] SYSC_readv fs/read_write.c:1011 [inline]
 [<ffffffff815703e7>] SyS_readv+0x27/0x30 fs/read_write.c:1008
 [<ffffffff838a9985>] entry_SYSCALL_64_fastpath+0x23/0xc6
device gre0 entered promiscuous mode
binder: 17461:17462 ioctl 40046205 5 returned -22
device gre0 entered promiscuous mode
binder: 17461:17470 ioctl 40046205 5 returned -22
IPVS: Creating netns size=2536 id=23
binder: 17496:17503 ERROR: BC_REGISTER_LOOPER called without request
binder: 17496:17518 BC_DEAD_BINDER_DONE 0000000000000000 not found
binder: 17496:17518 got reply transaction with no transaction stack
binder: 17496:17518 transaction failed 29201/-71, size 48-16 line 2923
binder: 17524:17526 ioctl 40046205 5 returned -22
binder: 17496:17503 ERROR: BC_REGISTER_LOOPER called without request
binder: 17496:17518 BC_DEAD_BINDER_DONE 0000000000000000 not found
binder: 17496:17518 got reply transaction with no transaction stack
binder: 17496:17518 transaction failed 29201/-71, size 48-16 line 2923
loop_reread_partitions: partition scan of loop0 (2°]€fI¸Òæ¶Ì”B±!S,›ùDÏ') failed (rc=-13)
device gre0 entered promiscuous mode
binder: 17524:17536 ioctl 40046205 5 returned -22
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
IPVS: Creating netns size=2536 id=24
binder: 17574:17575 ERROR: BC_REGISTER_LOOPER called without request
binder: 17574:17575 ioctl c0306201 20008fd0 returned -11
binder: BINDER_SET_CONTEXT_MGR already set
binder: 17574:17575 ioctl 40046207 0 returned -16
binder: 17574:17596 ERROR: BC_REGISTER_LOOPER called without request
binder: send failed reply for transaction 170 to 17574:17575
binder: undelivered TRANSACTION_COMPLETE
binder: undelivered TRANSACTION_ERROR: 29189
IPVS: Creating netns size=2536 id=25
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
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=1 sclass=netlink_route_socket pig=17678 comm=syz-executor1
device gre0 entered promiscuous mode
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=1 sclass=netlink_route_socket pig=17690 comm=syz-executor1
netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'.
device gre0 entered promiscuous mode
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=5 sclass=netlink_route_socket pig=17766 comm=syz-executor0
device gre0 entered promiscuous mode
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=17766 comm=syz-executor0
device lo entered promiscuous mode
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=5 sclass=netlink_route_socket pig=17781 comm=syz-executor0
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=17815 comm=syz-executor0
FAULT_FLAG_ALLOW_RETRY missing 30
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 17865 Comm: syz-executor0 Not tainted 4.9.67-gf26d3c7 #106
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a32c7840 ffffffff81d906e9 ffff8801a32c7b20 0000000000000000
 ffff8801a6694d10 ffff8801a32c7a10 ffff8801a6694c00 ffff8801a32c7a38
 ffffffff8165e307 0000000000000000 ffff8801a32c7990 00000001d8f17067
Call Trace:
 [<ffffffff81d906e9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d906e9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8165e307>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cd5f1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cd5f1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cd5f1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cd5f1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810dd452>] __do_page_fault+0x5c2/0xd40 arch/x86/mm/fault.c:1406
 [<ffffffff810ddbf7>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469
 [<ffffffff838aab58>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff815e8f60>] SYSC_fsetxattr fs/xattr.c:504 [inline]
 [<ffffffff815e8f60>] SyS_fsetxattr+0x130/0x190 fs/xattr.c:493
 [<ffffffff838a9985>] entry_SYSCALL_64_fastpath+0x23/0xc6
binder: 17920:17921 ERROR: BC_REGISTER_LOOPER called without request
binder: 17920:17921 ioctl c0306201 20008fd0 returned -11
binder: BINDER_SET_CONTEXT_MGR already set
binder: 17920:17921 ioctl 40046207 0 returned -16
binder: 17920:17927 ERROR: BC_REGISTER_LOOPER called without request
binder_alloc: 17920: binder_alloc_buf, no vma
binder: 17920:17921 transaction failed 29189/-3, size 0-0 line 3130
binder: undelivered TRANSACTION_ERROR: 29189
binder: send failed reply for transaction 172 to 17920:17921
binder: undelivered TRANSACTION_COMPLETE
binder: undelivered TRANSACTION_ERROR: 29189
CPU: 1 PID: 17853 Comm: syz-executor0 Not tainted 4.9.67-gf26d3c7 #106
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a288f740 ffffffff81d906e9 ffff8801a288fa20 0000000000000000
 ffff8801a6694d10 ffff8801a288f910 ffff8801a6694c00 ffff8801a288f938
 ffffffff8165e307 ffff8801a288f798 ffff8801a288f890 00000001d8f17067
Call Trace:
 [<ffffffff81d906e9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d906e9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8165e307>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cd5f1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cd5f1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cd5f1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cd5f1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810dd452>] __do_page_fault+0x5c2/0xd40 arch/x86/mm/fault.c:1406
 [<ffffffff810ddbf7>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469
 [<ffffffff838aab58>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
FAULT_FLAG_ALLOW_RETRY missing 30
 [<ffffffff815a822d>] do_fcntl fs/fcntl.c:274 [inline]
 [<ffffffff815a822d>] SYSC_fcntl fs/fcntl.c:372 [inline]
 [<ffffffff815a822d>] SyS_fcntl+0x8fd/0xc70 fs/fcntl.c:357
 [<ffffffff838a9985>] entry_SYSCALL_64_fastpath+0x23/0xc6
CPU: 0 PID: 17842 Comm: syz-executor0 Not tainted 4.9.67-gf26d3c7 #106
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801cb5ff820 ffffffff81d906e9 ffff8801cb5ffb00 0000000000000000
 ffff8801a6694d10 ffff8801cb5ff9f0 ffff8801a6694c00 ffff8801cb5ffa18
 ffffffff8165e307 ffffffff00000002 ffff880100000064 0000002200004400
Call Trace:
 [<ffffffff81d906e9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d906e9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8165e307>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cd5f1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cd5f1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cd5f1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cd5f1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810dd452>] __do_page_fault+0x5c2/0xd40 arch/x86/mm/fault.c:1406
 [<ffffffff810ddbf7>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469
 [<ffffffff838aab58>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff815a060e>] getname_flags+0x10e/0x580 fs/namei.c:148
 [<ffffffff815a0a99>] getname+0x19/0x20 fs/namei.c:208
 [<ffffffff81ba8ccb>] SYSC_mq_open ipc/mqueue.c:787 [inline]
 [<ffffffff81ba8ccb>] SyS_mq_open+0x22b/0x940 ipc/mqueue.c:769
 [<ffffffff838a9985>] entry_SYSCALL_64_fastpath+0x23/0xc6
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=18 sclass=netlink_audit_socket pig=17953 comm=syz-executor0
binder: 17938:17945 ERROR: BC_REGISTER_LOOPER called without request
binder: 17938:17945 ioctl c0306201 20008fd0 returned -11
binder: BINDER_SET_CONTEXT_MGR already set
binder: 17938:17945 ioctl 40046207 0 returned -16
binder: 17938:17955 ERROR: BC_REGISTER_LOOPER called without request
binder_alloc: 17938: binder_alloc_buf, no vma
binder: 17938:17945 transaction failed 29189/-3, size 0-0 line 3130
binder: undelivered TRANSACTION_ERROR: 29189
binder: send failed reply for transaction 175 to 17938:17945
binder: undelivered TRANSACTION_COMPLETE
binder: undelivered TRANSACTION_ERROR: 29189
device gre0 entered promiscuous mode
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=18 sclass=netlink_audit_socket pig=17959 comm=syz-executor0