kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
handle_userfault: 60 callbacks suppressed
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 4058 Comm: syz-executor1 Not tainted 4.14.0-rc5-next-20171018+ #36
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 handle_userfault+0x11ec/0x23a0 fs/userfaultfd.c:427
 do_anonymous_page mm/memory.c:3121 [inline]
 handle_pte_fault mm/memory.c:3934 [inline]
 __handle_mm_fault+0x2d46/0x39c0 mm/memory.c:4060
 handle_mm_fault+0x334/0x8d0 mm/memory.c:4097
 __do_page_fault+0x5bd/0xd60 arch/x86/mm/fault.c:1438
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1514
 page_fault+0x22/0x30 arch/x86/entry/entry_64.S:1066
RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:604 [inline]
RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421
RSP: 0018:ffff8801c8717928 EFLAGS: 00010246
RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff823f2271
RDX: 0000000000000108 RSI: ffffc9000307f000 RDI: ffff8801c8717d28
RBP: ffff8801c8717a08 R08: 0000000000000001 R09: 1ffff100390e2ee7
R10: ffff8801c8717858 R11: 0000000000000003 R12: 1ffff100390e2f28
R13: ffff8801c87179e0 R14: 0000000000000000 R15: ffff8801c8717d20
 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:1770 [inline]
 new_sync_write fs/read_write.c:468 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:481
 vfs_write+0x189/0x510 fs/read_write.c:543
 SYSC_write fs/read_write.c:588 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:580
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x452869
RSP: 002b:00007fc16750dbe8 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452869
RDX: 000000000000001c RSI: 0000000020011fd2 RDI: 0000000000000015
RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee8b0
R13: 00000000ffffffff R14: 00007fc16750e6d4 R15: 0000000000000000
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 4067 Comm: syz-executor1 Not tainted 4.14.0-rc5-next-20171018+ #36
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 handle_userfault+0x11ec/0x23a0 fs/userfaultfd.c:427
 do_anonymous_page mm/memory.c:3121 [inline]
 handle_pte_fault mm/memory.c:3934 [inline]
 __handle_mm_fault+0x2d46/0x39c0 mm/memory.c:4060
 handle_mm_fault+0x334/0x8d0 mm/memory.c:4097
 __do_page_fault+0x5bd/0xd60 arch/x86/mm/fault.c:1438
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1514
 page_fault+0x22/0x30 arch/x86/entry/entry_64.S:1066
RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:604 [inline]
RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421
RSP: 0018:ffff8801c11cf928 EFLAGS: 00010246
RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff823f2271
RDX: 000000000000007d RSI: ffffc90003100000 RDI: ffff8801c11cfd28
RBP: ffff8801c11cfa08 R08: 1ffff1003931058a R09: 1ffff10038239f22
R10: ffff8801c11cfa50 R11: ffffffff87025e48 R12: 1ffff10038239f28
R13: ffff8801c11cf9e0 R14: 0000000000000000 R15: ffff8801c11cfd20
 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:1770 [inline]
 new_sync_write fs/read_write.c:468 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:481
 vfs_write+0x189/0x510 fs/read_write.c:543
 SYSC_write fs/read_write.c:588 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:580
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x452869
RSP: 002b:00007fc1674ecbe8 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 0000000000452869
RDX: 000000000000001c RSI: 0000000020011fd2 RDI: 0000000000000015
RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000
R13: 0000000000a6f7ff R14: 00007fc1674ed9c0 R15: 000000000000000b
CPU: 0 PID: 4087 Comm: syz-executor5 Not tainted 4.14.0-rc5-next-20171018+ #36
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d958e3c0 task.stack: ffff8801d50a0000
RIP: 0010:__read_once_size include/linux/compiler.h:276 [inline]
RIP: 0010:hrtimer_active+0x211/0x410 kernel/time/hrtimer.c:1142
RSP: 0018:ffff8801d50a7738 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff1003aa14f14 RCX: ffffffff815ef89f
RDX: 0000000000000069 RSI: ffffc900021e2000 RDI: ffff8801c9233be0
RBP: ffff8801d50a7878 R08: ffffffff83f9e367 R09: 0000000000000004
R10: ffff8801d50a7be0 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffed003aa14ef2 R15: dffffc0000000000
FS:  00007f4b1aac1700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020ff4ffc CR3: 00000001c0ecb000 CR4: 00000000001406f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 hrtimer_try_to_cancel+0x91/0x5c0 kernel/time/hrtimer.c:1006
 hrtimer_cancel+0x22/0x40 kernel/time/hrtimer.c:1032
 napi_disable+0x87/0xa0 net/core/dev.c:5552
 tun_napi_disable drivers/net/tun.c:290 [inline]
 __tun_detach+0xe26/0x1570 drivers/net/tun.c:617
 tun_detach drivers/net/tun.c:664 [inline]
 tun_chr_close+0x44/0x60 drivers/net/tun.c:2835
 __fput+0x327/0x7e0 fs/file_table.c:210
 ____fput+0x15/0x20 fs/file_table.c:244
 task_work_run+0x199/0x270 kernel/task_work.c:112
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x296/0x310 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath+0x42f/0x510 arch/x86/entry/common.c:266
 entry_SYSCALL_64_fastpath+0xbc/0xbe
RIP: 0033:0x452869
RSP: 002b:00007f4b1aac0be8 EFLAGS: 00000212 ORIG_RAX: 0000000000000021
RAX: 0000000000000016 RBX: 0000000000758020 RCX: 0000000000452869
RDX: 0000000000000000 RSI: 0000000000000016 RDI: 0000000000000015
RBP: 0000000000000059 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee8f8
R13: 00000000ffffffff R14: 00007f4b1aac16d4 R15: 0000000000000000
Code: c6 00 00 48 8b 85 d8 fe ff ff 48 c1 e8 03 42 80 3c 38 00 0f 85 f2 01 00 00 48 8b 85 e8 fe ff ff 4c 8b 60 30 4c 89 e0 48 c1 e8 03 <42> 80 3c 38 00 0f 85 c8 01 00 00 48 8b 85 f0 fe ff ff 49 8b 1c 
RIP: __read_once_size include/linux/compiler.h:276 [inline] RSP: ffff8801d50a7738
RIP: hrtimer_active+0x211/0x410 kernel/time/hrtimer.c:1142 RSP: ffff8801d50a7738
---[ end trace 729787a6f256c759 ]---
sctp: [Deprecated]: syz-executor5 (pid 4103) Use of struct sctp_assoc_value in delayed_ack socket option.
Use struct sctp_sack_info instead