FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 0 PID: 10594 Comm: syz-executor1 Not tainted 4.9.63-ga828714 #93
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c5d1f930 ffffffff81d94429 ffff8801c5d1fc10[   81.580411] kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 10610 Comm: syz-executor0 Not tainted 4.9.63-ga828714 #93
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801c6cd4800 task.stack: ffff8801ac1b8000
RIP: 0010:[<ffffffff82665a6c>] 
 [<ffffffff82665a6c>] sg_read_oxfer drivers/scsi/sg.c:1976 [inline]
 [<ffffffff82665a6c>] sg_read+0xd0c/0x1440 drivers/scsi/sg.c:520
RSP: 0018:ffff8801ac1bfbc0  EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90001ab7000
RDX: 0000000000000000 RSI: 0000000000000036 RDI: ffff8801a79fc370
RBP: ffff8801ac1bfcd0 R08: 0000000000000000 R09: ffffed0035703ff1
R10: 0000000000000005 R11: ffffed0035703ff0 R12: 0000000000001000
R13: 0000000000000000 R14: ffff8801ab81ff60 R15: ffff8801a79fc340
FS:  00007f6900af6700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000d7ccd8 CR3: 00000001c8647000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000106
 ffff8801c6cd50b0 ffff8801a79fc358 0000000000000036[   81.580545]  0000000041b58ab3
 ffff8801a79fc368 000000000000005a 00000000ffffffff[   81.580556]  ffff8801d1b77900
 1ffff10035837f84 00000000201e9fa6 00000000201e9fca[   81.580566] Call Trace:
 [<ffffffff8156c193>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156ff2e>] vfs_read+0x11e/0x380 fs/read_write.c:475
 [<ffffffff81573c59>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff81573c59>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838ad705>] entry_SYSCALL_64_fastpath+0x23/0xc6
Code: 
00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8a 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 28 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 df 05 00 00 48 8b 1b 48 85 db 0f 84 51 03 00 [   81.580870] RIP 
 [<ffffffff82665a6c>] sg_read_oxfer drivers/scsi/sg.c:1976 [inline]
 [<ffffffff82665a6c>] sg_read+0xd0c/0x1440 drivers/scsi/sg.c:520
---[ end trace 6d01d62cc7dd4c3d ]---
Kernel panic - not syncing: Fatal exception
 0000000000000000 ffff8801c6810110 ffff8801c5d1fb00 ffff8801c6810000 ffff8801c5d1fb28
 ffffffff816623c7 00000000000051b9 ffff8801c78ab8f0 ffff8801c78ab8a0
Call Trace:
 [<ffffffff81d94429>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94429>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff816623c7>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814d16c1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814d16c1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814d16c1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814d16c1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e1447>] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396
 [<ffffffff810e1c27>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ae8d8>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ad705>] entry_SYSCALL_64_fastpath+0x23/0xc6
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..