audit: type=1400 audit(1521288559.061:27): avc:  denied  { connect } for  pid=9090 comm="syz-executor7" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access[   77.285106] BUG: spinlock bad magic on CPU#0, syz-executor0/3848
 lock: 0xffff8800ab658018, .magic: dead4eac, .owner: <none>/-1, .owner_cpu: -1
CPU: 0 PID: 3848 Comm: syz-executor0 Not tainted 4.4.120-gd63fdf6 #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 68e2d835fb715eaf ffff8801db2078d8 ffffffff81d0408d
 ffff8800ab658018 ffff8800bac36000 0000000000000001 0000000000000001
 0000000000000000 ffff8801db207918 ffffffff81246aad 0000000000000000
Call Trace:
 <IRQ>  [<ffffffff81d0408d>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ>  [<ffffffff81d0408d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81246aad>] spin_dump+0x14d/0x280 kernel/locking/spinlock_debug.c:67
 [<ffffffff81246e98>] spin_bug kernel/locking/spinlock_debug.c:75 [inline]
 [<ffffffff81246e98>] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 [<ffffffff81246e98>] do_raw_spin_lock+0x228/0x2c0 kernel/locking/spinlock_debug.c:135
 [<ffffffff83773546>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 [<ffffffff83773546>] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159
 [<ffffffff8121f7ee>] __wake_up+0x1e/0x50 kernel/sched/wait.c:94
 [<ffffffff825bbcdc>] sg_rq_end_io+0x5dc/0xbc0 drivers/scsi/sg.c:1385
 [<ffffffff81c98e44>] __blk_mq_end_request+0x54/0xc0 block/blk-mq.c:311
 [<ffffffff82523a35>] scsi_end_request+0x135/0x5b0 drivers/scsi/scsi_lib.c:716
 [<ffffffff8252cc83>] scsi_io_completion+0x15c3/0x1710 drivers/scsi/scsi_lib.c:918
 [<ffffffff825101bf>] scsi_finish_command+0x3af/0x520 drivers/scsi/scsi.c:607
 [<ffffffff8252a380>] scsi_softirq_done+0x250/0x350 drivers/scsi/scsi_lib.c:1654
 [<ffffffff81c9b0a5>] blk_mq_ipi_complete_request block/blk-mq.c:356 [inline]
 [<ffffffff81c9b0a5>] __blk_mq_complete_request+0x205/0x500 block/blk-mq.c:368
 [<ffffffff81c9b3fb>] blk_mq_complete_request+0x5b/0x70 block/blk-mq.c:387
 [<ffffffff8252705b>] scsi_mq_done+0xfb/0x3c0 drivers/scsi/scsi_lib.c:1964
 [<ffffffff8254ff4f>] virtscsi_complete_cmd+0x5cf/0x7f0 drivers/scsi/virtio_scsi.c:210
 [<ffffffff8254dc69>] virtscsi_vq_done+0xc9/0x170 drivers/scsi/virtio_scsi.c:228
 [<ffffffff8254ddb7>] virtscsi_req_done+0xa7/0xd0 drivers/scsi/virtio_scsi.c:243
 [<ffffffff81f2cae9>] vring_interrupt+0x109/0x150 drivers/virtio/virtio_ring.c:722
 [<ffffffff8126e271>] handle_irq_event_percpu+0xf1/0x960 kernel/irq/handle.c:146
 [<ffffffff8126eb87>] handle_irq_event+0xa7/0x140 kernel/irq/handle.c:194
 [<ffffffff812788ea>] handle_edge_irq+0x1fa/0x8e0 kernel/irq/chip.c:623
 [<ffffffff81016900>] generic_handle_irq_desc include/linux/irqdesc.h:140 [inline]
 [<ffffffff81016900>] handle_irq+0x250/0x3a0 arch/x86/kernel/irq_64.c:78
 [<ffffffff83776419>] do_IRQ+0x89/0x1b0 arch/x86/kernel/irq.c:239
 [<ffffffff837744e0>] common_interrupt+0xa0/0xa0 arch/x86/entry/entry_64.S:592
 <EOI>  [<ffffffff83775470>] ? __entry_text_end+0x7/0x7
 [<ffffffff814fd47d>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff814fd47d>] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:616
 [<ffffffff814f9764>] __kmalloc+0x124/0x320 mm/slub.c:3613
 [<ffffffff814c83f8>] __kmalloc_node include/linux/slab.h:345 [inline]
 [<ffffffff814c83f8>] kmalloc_node include/linux/slab.h:518 [inline]
 [<ffffffff814c83f8>] __vmalloc_area_node mm/vmalloc.c:1598 [inline]
 [<ffffffff814c83f8>] __vmalloc_node_range+0x188/0x630 mm/vmalloc.c:1671
 [<ffffffff814c896b>] __vmalloc_node mm/vmalloc.c:1715 [inline]
 [<ffffffff814c896b>] __vmalloc_node_flags mm/vmalloc.c:1729 [inline]
 [<ffffffff814c896b>] vmalloc+0x5b/0x70 mm/vmalloc.c:1744
 [<ffffffff8302f0d8>] xt_compat_add_offset+0x228/0x380 net/netfilter/x_tables.c:471
 [<ffffffff833f4ad4>] compat_calc_entry net/ipv6/netfilter/ip6_tables.c:1062 [inline]
 [<ffffffff833f4ad4>] compat_table_info+0x254/0x4a0 net/ipv6/netfilter/ip6_tables.c:1093
 [<ffffffff833f7134>] compat_get_entries net/ipv6/netfilter/ip6_tables.c:1806 [inline]
 [<ffffffff833f7134>] compat_do_ip6t_get_ctl+0x2d4/0x900 net/ipv6/netfilter/ip6_tables.c:1840
 [<ffffffff82f97bdb>] compat_nf_sockopt net/netfilter/nf_sockopt.c:138 [inline]
 [<ffffffff82f97bdb>] compat_nf_getsockopt+0x8b/0x130 net/netfilter/nf_sockopt.c:162
 [<ffffffff8335a4e0>] compat_ipv6_getsockopt+0x1f0/0x2e0 net/ipv6/ipv6_sockglue.c:1382
 [<ffffffff83107db5>] inet_csk_compat_getsockopt+0x95/0x120 net/ipv4/inet_connection_sock.c:901
 [<ffffffff8311a62d>] compat_tcp_getsockopt+0x3d/0x70 net/ipv4/tcp.c:2956
 [<ffffffff82df1ce2>] compat_sock_common_getsockopt+0xb2/0x140 net/core/sock.c:2629
 [<ffffffff82edaf39>] C_SYSC_getsockopt net/compat.c:504 [inline]
 [<ffffffff82edaf39>] compat_SyS_getsockopt net/compat.c:487 [inline]
 [<ffffffff82edaf39>] C_SYSC_socketcall net/compat.c:838 [inline]
 [<ffffffff82edaf39>] compat_SyS_socketcall+0x739/0xb00 net/compat.c:769
 [<ffffffff81006d91>] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline]
 [<ffffffff81006d91>] do_fast_syscall_32+0x321/0x8a0 arch/x86/entry/common.c:459
 [<ffffffff837752ea>] sysenter_flags_fixed+0xd/0x17
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 9107 Comm: syz-executor2 Not tainted 4.4.120-gd63fdf6 #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800a9039800 task.stack: ffff8800b7018000
RIP: 0010:[<ffffffff81434701>]  [<ffffffff81434701>] __read_once_size include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff81434701>]  [<ffffffff81434701>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:[<ffffffff81434701>]  [<ffffffff81434701>] put_page_testzero include/linux/mm.h:357 [inline]
RIP: 0010:[<ffffffff81434701>]  [<ffffffff81434701>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
RSP: 0018:ffff8800b701f970  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b85eb
RDX: 1bd5a9d5a0000003 RSI: 0000000000000006 RDI: dead4ead0000001c
RBP: ffff8800b701f980 R08: 0000000048000000 R09: 0000000000001e30
R10: 0000000000002100 R11: 1ffff10016e03f0c R12: 0000000000000004
R13: 0000000000000020 R14: ffff8800ab65a100 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f6f5cb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00005645f4c5e460 CR3: 00000000b3636000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000246 ffff8800ab65a258 ffff8800b701f9e0 ffffffff825b8611
 ffff8800ab65a270 ffffed00156cb44b ffffed00156cb44e ffff8800ab65a268
 dead4ead00000000 ffff8800ab65a240 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff825b8611>] sg_remove_scat.isra.17+0x1c1/0x2d0 drivers/scsi/sg.c:1954
 [<ffffffff825b89d5>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1835
 [<ffffffff825b8bdd>] sg_new_read.isra.18+0x17d/0x3c0 drivers/scsi/sg.c:577
 [<ffffffff825ba6fc>] sg_read+0x8bc/0x1490 drivers/scsi/sg.c:466
 [<ffffffff8151d801>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff8152039f>] compat_do_readv_writev+0x5df/0x6e0 fs/read_write.c:984
 [<ffffffff81520579>] compat_readv+0xd9/0x140 fs/read_write.c:1013
 [<ffffffff815228e8>] C_SYSC_readv fs/read_write.c:1033 [inline]
 [<ffffffff815228e8>] compat_SyS_readv+0xd8/0x1b0 fs/read_write.c:1022
 [<ffffffff81006d91>] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline]
 [<ffffffff81006d91>] do_fast_syscall_32+0x321/0x8a0 arch/x86/entry/common.c:459
 [<ffffffff837752ea>] sysenter_flags_fixed+0xd/0x17
Code: c6 a0 0c 00 e9 78 fd ff ff 90 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 49 
RIP  [<ffffffff81434701>] __read_once_size include/linux/compiler.h:218 [inline]
RIP  [<ffffffff81434701>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP  [<ffffffff81434701>] put_page_testzero include/linux/mm.h:357 [inline]
RIP  [<ffffffff81434701>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
 RSP <ffff8800b701f970>
---[ end trace e5ab691276bff383 ]---