netlink: 'syz-executor1': attribute type 1 has an invalid length.

======================================================
WARNING: possible circular locking dependency detected
4.15.0+ #293 Not tainted
------------------------------------------------------
syz-executor4/8209 is trying to acquire lock:
 (sk_lock-AF_INET6){+.+.}, at: [<00000000424f8918>] lock_sock include/net/sock.h:1461 [inline]
 (sk_lock-AF_INET6){+.+.}, at: [<00000000424f8918>] do_ipv6_setsockopt.isra.8+0x3c5/0x39d0 net/ipv6/ipv6_sockglue.c:167

but task is already holding lock:
 (rtnl_mutex){+.+.}, at: [<000000002fa9d90f>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (rtnl_mutex){+.+.}:
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893
       mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908
       rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
       register_netdevice_notifier+0xad/0x860 net/core/dev.c:1607
       tee_tg_check+0x1a0/0x280 net/netfilter/xt_TEE.c:106
       xt_check_target+0x22c/0x7d0 net/netfilter/x_tables.c:845
       check_target net/ipv6/netfilter/ip6_tables.c:533 [inline]
       find_check_entry.isra.7+0x935/0xcf0 net/ipv6/netfilter/ip6_tables.c:575
       translate_table+0xf52/0x1690 net/ipv6/netfilter/ip6_tables.c:744
       do_replace net/ipv6/netfilter/ip6_tables.c:1160 [inline]
       do_ip6t_set_ctl+0x370/0x5f0 net/ipv6/netfilter/ip6_tables.c:1686
       nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
       nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115
       ipv6_setsockopt+0x115/0x150 net/ipv6/ipv6_sockglue.c:928
       rawv6_setsockopt+0x4a/0xf0 net/ipv6/raw.c:1060
       sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978
       SYSC_setsockopt net/socket.c:1849 [inline]
       SyS_setsockopt+0x189/0x360 net/socket.c:1828
       entry_SYSCALL_64_fastpath+0x29/0xa0

-> #0 (sk_lock-AF_INET6){+.+.}:
       lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3920
       lock_sock_nested+0xc2/0x110 net/core/sock.c:2780
       lock_sock include/net/sock.h:1461 [inline]
       do_ipv6_setsockopt.isra.8+0x3c5/0x39d0 net/ipv6/ipv6_sockglue.c:167
       ipv6_setsockopt+0xd7/0x150 net/ipv6/ipv6_sockglue.c:922
       udpv6_setsockopt+0x45/0x80 net/ipv6/udp.c:1422
       sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978
       SYSC_setsockopt net/socket.c:1849 [inline]
       SyS_setsockopt+0x189/0x360 net/socket.c:1828
       entry_SYSCALL_64_fastpath+0x29/0xa0

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(rtnl_mutex);
                               lock(sk_lock-AF_INET6);
                               lock(rtnl_mutex);
  lock(sk_lock-AF_INET6);

 *** DEADLOCK ***

1 lock held by syz-executor4/8209:
 #0:  (rtnl_mutex){+.+.}, at: [<000000002fa9d90f>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74

stack backtrace:
CPU: 1 PID: 8209 Comm: syz-executor4 Not tainted 4.15.0+ #293
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 print_circular_bug.isra.38+0x2cd/0x2dc kernel/locking/lockdep.c:1223
 check_prev_add kernel/locking/lockdep.c:1863 [inline]
 check_prevs_add kernel/locking/lockdep.c:1976 [inline]
 validate_chain kernel/locking/lockdep.c:2417 [inline]
 __lock_acquire+0x30a8/0x3e00 kernel/locking/lockdep.c:3431
 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3920
 lock_sock_nested+0xc2/0x110 net/core/sock.c:2780
 lock_sock include/net/sock.h:1461 [inline]
 do_ipv6_setsockopt.isra.8+0x3c5/0x39d0 net/ipv6/ipv6_sockglue.c:167
 ipv6_setsockopt+0xd7/0x150 net/ipv6/ipv6_sockglue.c:922
 udpv6_setsockopt+0x45/0x80 net/ipv6/udp.c:1422
 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978
 SYSC_setsockopt net/socket.c:1849 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1828
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007fc3947e0c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fc3947e1700 RCX: 0000000000453299
RDX: 0000000000000030 RSI: 0000000000000029 RDI: 0000000000000014
RBP: 0000000000000000 R08: 0000000000000108 R09: 0000000000000000
R10: 0000000020001000 R11: 0000000000000212 R12: 0000000000000000
R13: 0000000000a2f33f R14: 00007fc3947e19c0 R15: 0000000000000000
netlink: 'syz-executor1': attribute type 1 has an invalid length.
netlink: 'syz-executor1': attribute type 1 has an invalid length.
netlink: 'syz-executor1': attribute type 1 has an invalid length.
kauditd_printk_skb: 77 callbacks suppressed
audit: type=1400 audit(1517598047.491:194): avc:  denied  { validate_trans } for  pid=8307 comm="syz-executor6" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:security_t:s0 tclass=security permissive=1
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 8353 Comm: syz-executor2 Not tainted 4.15.0+ #293
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 handle_userfault+0xbd9/0x2500 fs/userfaultfd.c:430
 do_anonymous_page mm/memory.c:3153 [inline]
 handle_pte_fault mm/memory.c:3967 [inline]
 __handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4093
 handle_mm_fault+0x38f/0x930 mm/memory.c:4130
 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1426
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1501
 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1261
RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:601 [inline]
RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421
RSP: 0018:ffff8801b7957928 EFLAGS: 00010246
RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff825ae3d1
RDX: 00000000000000c3 RSI: ffffc90002959000 RDI: ffff8801b7957d28
RBP: ffff8801b7957a08 R08: 1ffff100380ab81a R09: 1ffff10036f2af1a
R10: ffff8801b7957858 R11: ffffffff8814b148 R12: 1ffff10036f2af28
R13: ffff8801b79579e0 R14: 0000000000000000 R15: ffff8801b7957d20
 generic_perform_write+0x200/0x600 mm/filemap.c:3128
 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3263
 generic_file_write_iter+0x399/0x790 mm/filemap.c:3291
 call_write_iter include/linux/fs.h:1781 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:482
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007fc29cd46c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299
RDX: 0000000000000030 RSI: 0000000020011fd2 RDI: 0000000000000014
RBP: 0000000000000321 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f3bb8
R13: 00000000ffffffff R14: 00007fc29cd476d4 R15: 0000000000000000
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 8388 Comm: syz-executor4 Not tainted 4.15.0+ #293
FAULT_FLAG_ALLOW_RETRY missing 30
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 handle_userfault+0xbd9/0x2500 fs/userfaultfd.c:430
 do_anonymous_page mm/memory.c:3153 [inline]
 handle_pte_fault mm/memory.c:3967 [inline]
 __handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4093
 handle_mm_fault+0x38f/0x930 mm/memory.c:4130
 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1426
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1501
 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1261
RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:601 [inline]
RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421
RSP: 0018:ffff8801d0b37928 EFLAGS: 00010246
RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff825ae3d1
RDX: 0000000000000100 RSI: ffffc90003e02000 RDI: ffff8801d0b37d28
RBP: ffff8801d0b37a08 R08: ffff8801bcfbec00 R09: 1ffff1003a166ed1
R10: ffff8801d0b37858 R11: ffff8801bcfbec00 R12: 1ffff1003a166f28
R13: ffff8801d0b379e0 R14: 0000000000000000 R15: ffff8801d0b37d20
 generic_perform_write+0x200/0x600 mm/filemap.c:3128
 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3263
 generic_file_write_iter+0x399/0x790 mm/filemap.c:3291
 call_write_iter include/linux/fs.h:1781 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:482
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007fc3947e0c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc3947e1700 RCX: 0000000000453299
RDX: 0000000000000030 RSI: 0000000020011fd2 RDI: 0000000000000014
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000
R13: 0000000000a2f33f R14: 00007fc3947e19c0 R15: 0000000000000000
CPU: 0 PID: 8392 Comm: syz-executor2 Not tainted 4.15.0+ #293
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 handle_userfault+0xbd9/0x2500 fs/userfaultfd.c:430
 do_anonymous_page mm/memory.c:3153 [inline]
 handle_pte_fault mm/memory.c:3967 [inline]
 __handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4093
 handle_mm_fault+0x38f/0x930 mm/memory.c:4130
 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1426
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1501
 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1261
RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:601 [inline]
RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421
RSP: 0018:ffff8801d014f928 EFLAGS: 00010246
RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff825ae3d1
RDX: 0000000000000100 RSI: ffffc90002959000 RDI: ffff8801d014fd28
RBP: ffff8801d014fa08 R08: ffff8801bcfbe6d0 R09: 1ffff1003a029ed1
R10: ffff8801d014f858 R11: ffff8801bcfbe6d0 R12: 1ffff1003a029f28
R13: ffff8801d014f9e0 R14: 0000000000000000 R15: ffff8801d014fd20
 generic_perform_write+0x200/0x600 mm/filemap.c:3128
 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3263
 generic_file_write_iter+0x399/0x790 mm/filemap.c:3291
 call_write_iter include/linux/fs.h:1781 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:482
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007fc29cd46c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc29cd47700 RCX: 0000000000453299
RDX: 0000000000000030 RSI: 0000000020011fd2 RDI: 0000000000000014
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000
R13: 0000000000a2f33f R14: 00007fc29cd479c0 R15: 0000000000000000
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 0 PID: 8430 Comm: syz-executor2 Not tainted 4.15.0+ #293
FAULT_FLAG_ALLOW_RETRY missing 30
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 handle_userfault+0xbd9/0x2500 fs/userfaultfd.c:430
 do_anonymous_page mm/memory.c:3153 [inline]
 handle_pte_fault mm/memory.c:3967 [inline]
 __handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4093
 handle_mm_fault+0x38f/0x930 mm/memory.c:4130
 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1426
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1501
 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1261
RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:601 [inline]
RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421
RSP: 0018:ffff8801b33df928 EFLAGS: 00010246
RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff825ae3d1
RDX: 0000000000000100 RSI: ffffc90002959000 RDI: ffff8801b33dfd28
RBP: ffff8801b33dfa08 R08: 0000000000000000 R09: 1ffff1003667bed1
R10: ffff8801b33df858 R11: ffff8801bce886d0 R12: 1ffff1003667bf28
R13: ffff8801b33df9e0 R14: 0000000000000000 R15: ffff8801b33dfd20
 generic_perform_write+0x200/0x600 mm/filemap.c:3128
 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3263
 generic_file_write_iter+0x399/0x790 mm/filemap.c:3291
 call_write_iter include/linux/fs.h:1781 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:482
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007fc29cd46c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299
RDX: 0000000000000030 RSI: 0000000020011fd2 RDI: 0000000000000014
RBP: 00000000000003d9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4cf8
R13: 00000000ffffffff R14: 00007fc29cd476d4 R15: 0000000000000000
CPU: 1 PID: 8432 Comm: syz-executor4 Not tainted 4.15.0+ #293
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 handle_userfault+0xbd9/0x2500 fs/userfaultfd.c:430
 do_anonymous_page mm/memory.c:3153 [inline]
 handle_pte_fault mm/memory.c:3967 [inline]
 __handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4093
 handle_mm_fault+0x38f/0x930 mm/memory.c:4130
 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1426
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1501
 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1261
RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:601 [inline]
RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421
RSP: 0018:ffff8801b7ac7928 EFLAGS: 00010246
RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff825ae3d1
RDX: 0000000000000100 RSI: ffffc90003e02000 RDI: ffff8801b7ac7d28
RBP: ffff8801b7ac7a08 R08: 0000000000000000 R09: 1ffff10036f58ed1
R10: ffff8801b7ac7858 R11: ffff8801bb84fc00 R12: 1ffff10036f58f28
R13: ffff8801b7ac79e0 R14: 0000000000000000 R15: ffff8801b7ac7d20
 generic_perform_write+0x200/0x600 mm/filemap.c:3128
 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3263
 generic_file_write_iter+0x399/0x790 mm/filemap.c:3291
 call_write_iter include/linux/fs.h:1781 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:482
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007fc3947e0c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071bec8 RCX: 0000000000453299
RDX: 0000000000000030 RSI: 0000000020011fd2 RDI: 0000000000000014
RBP: 000000000071bec8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000
R13: 0000000000a2f33f R14: 00007fc3947e19c0 R15: 0000000000000000
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 8476 Comm: syz-executor0 Not tainted 4.15.0+ #293
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 handle_userfault+0xbd9/0x2500 fs/userfaultfd.c:430
 do_anonymous_page mm/memory.c:3153 [inline]
 handle_pte_fault mm/memory.c:3967 [inline]
 __handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4093
 handle_mm_fault+0x38f/0x930 mm/memory.c:4130
 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1426
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1501
 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1261
RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:601 [inline]
RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421
RSP: 0018:ffff8801b7a47928 EFLAGS: 00010246
RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff825ae3d1
RDX: 00000000000000c3 RSI: ffffc90001440000 RDI: ffff8801b7a47d28
RBP: ffff8801b7a47a08 R08: 1ffff10039e068f2 R09: 1ffff10036f48f1a
R10: ffff8801b7a47858 R11: ffffffff8814b148 R12: 1ffff10036f48f28
R13: ffff8801b7a479e0 R14: 0000000000000000 R15: ffff8801b7a47d20
 generic_perform_write+0x200/0x600 mm/filemap.c:3128
 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3263
 generic_file_write_iter+0x399/0x790 mm/filemap.c:3291
 call_write_iter include/linux/fs.h:1781 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:482
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007fd8c55d3c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299
RDX: 0000000000000030 RSI: 0000000020011fd2 RDI: 0000000000000014
RBP: 0000000000000069 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006efa78
R13: 00000000ffffffff R14: 00007fd8c55d46d4 R15: 0000000000000000
audit: type=1400 audit(1517598051.005:195): avc:  denied  { map } for  pid=8540 comm="syz-executor6" path="/dev/usbmon0" dev="devtmpfs" ino=1095 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_file permissive=1
device ipddp0 entered promiscuous mode
device ipddp0 left promiscuous mode
device ipddp0 entered promiscuous mode
device ipddp0 left promiscuous mode
Cannot find add_set index 0 as target
device ipddp0 entered promiscuous mode
Cannot find add_set index 0 as target
device ipddp0 left promiscuous mode
device ipddp0 entered promiscuous mode
device ipddp0 left promiscuous mode
Cannot find add_set index 0 as target
Cannot find add_set index 0 as target
device ipddp0 entered promiscuous mode
device ipddp0 left promiscuous mode
Cannot find add_set index 0 as target
device ipddp0 entered promiscuous mode
device ipddp0 entered promiscuous mode
device ipddp0 left promiscuous mode
device ipddp0 left promiscuous mode
hrtimer: interrupt took 21779 ns
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 0 PID: 8877 Comm: syz-executor4 Not tainted 4.15.0+ #293
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 handle_userfault+0xbd9/0x2500 fs/userfaultfd.c:430
 do_anonymous_page mm/memory.c:3153 [inline]
 handle_pte_fault mm/memory.c:3967 [inline]
 __handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4093
 handle_mm_fault+0x38f/0x930 mm/memory.c:4130
 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1426
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1501
 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1261
RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:601 [inline]
RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421
RSP: 0018:ffff8801ccc6f928 EFLAGS: 00010246
RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff825ae3d1
RDX: 0000000000000100 RSI: ffffc90003e02000 RDI: ffff8801ccc6fd28
RBP: ffff8801ccc6fa08 R08: 0000000000000000 R09: 1ffff1003998ded1
R10: ffff8801ccc6f858 R11: ffff8801c80ba6d0 R12: 1ffff1003998df28
R13: ffff8801ccc6f9e0 R14: 0000000000000000 R15: ffff8801ccc6fd20
 generic_perform_write+0x200/0x600 mm/filemap.c:3128
 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3263
 generic_file_write_iter+0x399/0x790 mm/filemap.c:3291
 call_write_iter include/linux/fs.h:1781 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:482
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007fc3947e0c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299
RDX: 000000000000001c RSI: 0000000020011fd2 RDI: 0000000000000014
RBP: 0000000000000069 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006efa78
R13: 00000000ffffffff R14: 00007fc3947e16d4 R15: 0000000000000000
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 8901 Comm: syz-executor4 Not tainted 4.15.0+ #293
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 handle_userfault+0xbd9/0x2500 fs/userfaultfd.c:430
 do_anonymous_page mm/memory.c:3153 [inline]
 handle_pte_fault mm/memory.c:3967 [inline]
 __handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4093
 handle_mm_fault+0x38f/0x930 mm/memory.c:4130
 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1426
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1501
 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1261
RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:601 [inline]
RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421
RSP: 0018:ffff8801b7aef928 EFLAGS: 00010246
RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff825ae3d1
RDX: 00000000000000c3 RSI: ffffc90003e02000 RDI: ffff8801b7aefd28
RBP: ffff8801b7aefa08 R08: 1ffff10038c1dd2a R09: 1ffff10036f5df1a
R10: ffff8801b7aef858 R11: ffffffff8814b148 R12: 1ffff10036f5df28
R13: ffff8801b7aef9e0 R14: 0000000000000000 R15: ffff8801b7aefd20
 generic_perform_write+0x200/0x600 mm/filemap.c:3128
 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3263
 generic_file_write_iter+0x399/0x790 mm/filemap.c:3291
 call_write_iter include/linux/fs.h:1781 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:482
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007fc3947e0c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299
RDX: 000000000000001c RSI: 0000000020011fd2 RDI: 0000000000000014
RBP: 0000000000000321 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f3bb8
R13: 00000000ffffffff R14: 00007fc3947e16d4 R15: 0000000000000000
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 8957 Comm: syz-executor4 Not tainted 4.15.0+ #293
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 handle_userfault+0xbd9/0x2500 fs/userfaultfd.c:430
 do_anonymous_page mm/memory.c:3153 [inline]
 handle_pte_fault mm/memory.c:3967 [inline]
 __handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4093
 handle_mm_fault+0x38f/0x930 mm/memory.c:4130
 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1426
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1501
 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1261
RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:601 [inline]
RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421
RSP: 0018:ffff8801cb40f928 EFLAGS: 00010246
RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff825ae3d1
RDX: 0000000000000100 RSI: ffffc90003e02000 RDI: ffff8801cb40fd28
RBP: ffff8801cb40fa08 R08: 0000000000000000 R09: 1ffff10039681ed1
R10: ffff8801cb40f858 R11: ffff8801d0006c00 R12: 1ffff10039681f28
R13: ffff8801cb40f9e0 R14: 0000000000000000 R15: ffff8801cb40fd20
 generic_perform_write+0x200/0x600 mm/filemap.c:3128
 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3263
 generic_file_write_iter+0x399/0x790 mm/filemap.c:3291
 call_write_iter include/linux/fs.h:1781 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:482
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007fc3947e0c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299
RDX: 000000000000001c RSI: 0000000020011fd2 RDI: 0000000000000014
RBP: 000000000000064c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f87c0
R13: 00000000ffffffff R14: 00007fc3947e16d4 R15: 0000000000000000
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 8995 Comm: syz-executor4 Not tainted 4.15.0+ #293
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 handle_userfault+0xbd9/0x2500 fs/userfaultfd.c:430
 do_anonymous_page mm/memory.c:3153 [inline]
 handle_pte_fault mm/memory.c:3967 [inline]
 __handle_mm_fault+0x32a3/0x3ce0 mm/memory.c:4093
 handle_mm_fault+0x38f/0x930 mm/memory.c:4130
 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1426
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1501
 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1261
RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:601 [inline]
RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421
RSP: 0018:ffff8801d85e7928 EFLAGS: 00010246
RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff825ae3d1
RDX: 0000000000000100 RSI: ffffc90003e02000 RDI: ffff8801d85e7d28
RBP: ffff8801d85e7a08 R08: 0000000000000000 R09: 1ffff1003b0bced1
R10: ffff8801d85e7858 R11: ffff8801d3570c00 R12: 1ffff1003b0bcf28
R13: ffff8801d85e79e0 R14: 0000000000000000 R15: ffff8801d85e7d20
 generic_perform_write+0x200/0x600 mm/filemap.c:3128
 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3263
 generic_file_write_iter+0x399/0x790 mm/filemap.c:3291
 call_write_iter include/linux/fs.h:1781 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:482
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007fc3947e0c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299
RDX: 000000000000001c RSI: 0000000020011fd2 RDI: 0000000000000014
RBP: 00000000000003d9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4cf8
R13: 00000000ffffffff R14: 00007fc3947e16d4 R15: 0000000000000000