program syz-executor4 not setting count and/or reply_len properly
audit: type=1400 audit(1521650059.700:27): avc:  denied  { write } for  pid=6246 comm="syz-executor6" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1
syz-executor1 (6251) used greatest stack depth: 23872 bytes left
==================================================================
BUG: KASAN: wild-memory-access in __copy_to_user arch/x86/include/asm/uaccess_64.h:182 [inline]
BUG: KASAN: wild-memory-access in sg_read_oxfer drivers/scsi/sg.c:1968 [inline]
BUG: KASAN: wild-memory-access in sg_read+0x1290/0x1440 drivers/scsi/sg.c:519
Read of size 630 at addr ffe70873f6abf000 by task syz-executor4/6258

CPU: 0 PID: 6258 Comm: syz-executor4 Not tainted 4.9.88-g71df7bb #60
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801b879f9c8 ffffffff81d95f19 ffe70873f6abf000 0000000000000276
 0000000000000000 ffff8801bdd9b4e0 ffff8801bf9da240 ffff8801b879fa10
 ffffffff8153eba2 ffffffff8266c600 0000000000000282 338adf81876f108c
Call Trace:
 [<ffffffff81d95f19>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d95f19>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153eba2>] kasan_report_error mm/kasan/report.c:353 [inline]
 [<ffffffff8153eba2>] kasan_report+0x162/0x380 mm/kasan/report.c:412
 [<ffffffff8153d5c7>] check_memory_region_inline mm/kasan/kasan.c:318 [inline]
 [<ffffffff8153d5c7>] check_memory_region+0x137/0x190 mm/kasan/kasan.c:325
 [<ffffffff8153d631>] kasan_check_read+0x11/0x20 mm/kasan/kasan.c:330
 [<ffffffff8266c600>] __copy_to_user arch/x86/include/asm/uaccess_64.h:182 [inline]
 [<ffffffff8266c600>] sg_read_oxfer drivers/scsi/sg.c:1968 [inline]
 [<ffffffff8266c600>] sg_read+0x1290/0x1440 drivers/scsi/sg.c:519
 [<ffffffff8156d338>] do_loop_readv_writev.part.17+0xc8/0x2b0 fs/read_write.c:715
 [<ffffffff8157147d>] do_loop_readv_writev fs/read_write.c:879 [inline]
 [<ffffffff8157147d>] do_readv_writev+0x5fd/0x740 fs/read_write.c:873
 [<ffffffff81571644>] vfs_readv+0x84/0xc0 fs/read_write.c:897
 [<ffffffff81571766>] do_readv+0xe6/0x250 fs/read_write.c:923
 [<ffffffff81574c37>] SYSC_readv fs/read_write.c:1010 [inline]
 [<ffffffff81574c37>] SyS_readv+0x27/0x30 fs/read_write.c:1007
 [<ffffffff81006504>] do_syscall_64+0x1a4/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b7a53>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
==================================================================
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 6258 Comm: syz-executor4 Tainted: G    B           4.9.88-g71df7bb #60
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801b879f8e8 ffffffff81d95f19 ffffffff841981e7 ffff8801b879f9c0
 0000000000000000 ffff8801bdd9b4e0 ffff8801bf9da240 ffff8801b879f9b0
 ffffffff8142fa71 0000000041b58ab3 ffffffff8418bc48 ffffffff8142f8b5
Call Trace:
 [<ffffffff81d95f19>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d95f19>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8142fa71>] panic+0x1bc/0x3a8 kernel/panic.c:179
 [<ffffffff8153e700>] kasan_end_report+0x50/0x50 mm/kasan/report.c:180
 [<ffffffff8153ebab>] kasan_report_error mm/kasan/report.c:360 [inline]
 [<ffffffff8153ebab>] kasan_report+0x16b/0x380 mm/kasan/report.c:412
 [<ffffffff8153d5c7>] check_memory_region_inline mm/kasan/kasan.c:318 [inline]
 [<ffffffff8153d5c7>] check_memory_region+0x137/0x190 mm/kasan/kasan.c:325
 [<ffffffff8153d631>] kasan_check_read+0x11/0x20 mm/kasan/kasan.c:330
 [<ffffffff8266c600>] __copy_to_user arch/x86/include/asm/uaccess_64.h:182 [inline]
 [<ffffffff8266c600>] sg_read_oxfer drivers/scsi/sg.c:1968 [inline]
 [<ffffffff8266c600>] sg_read+0x1290/0x1440 drivers/scsi/sg.c:519
 [<ffffffff8156d338>] do_loop_readv_writev.part.17+0xc8/0x2b0 fs/read_write.c:715
 [<ffffffff8157147d>] do_loop_readv_writev fs/read_write.c:879 [inline]
 [<ffffffff8157147d>] do_readv_writev+0x5fd/0x740 fs/read_write.c:873
 [<ffffffff81571644>] vfs_readv+0x84/0xc0 fs/read_write.c:897
 [<ffffffff81571766>] do_readv+0xe6/0x250 fs/read_write.c:923
 [<ffffffff81574c37>] SYSC_readv fs/read_write.c:1010 [inline]
 [<ffffffff81574c37>] SyS_readv+0x27/0x30 fs/read_write.c:1007
 [<ffffffff81006504>] do_syscall_64+0x1a4/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b7a53>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..