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
Modules linked in:
CPU: 1 PID: 16681 Comm: syz-executor.4 Not tainted 4.9.194+ #0
task: 0000000004cb6aba task.stack: 00000000d5b73df2
RIP: 0010:[<ffffffff815dd965>]  [<00000000ab9b7e33>] __read_once_size include/linux/compiler.h:264 [inline]
RIP: 0010:[<ffffffff815dd965>]  [<00000000ab9b7e33>] compound_head include/linux/page-flags.h:145 [inline]
RIP: 0010:[<ffffffff815dd965>]  [<00000000ab9b7e33>] get_page include/linux/mm.h:772 [inline]
RIP: 0010:[<ffffffff815dd965>]  [<00000000ab9b7e33>] submit_page_section fs/direct-io.c:826 [inline]
RIP: 0010:[<ffffffff815dd965>]  [<00000000ab9b7e33>] do_direct_IO fs/direct-io.c:1046 [inline]
RIP: 0010:[<ffffffff815dd965>]  [<00000000ab9b7e33>] do_blockdev_direct_IO fs/direct-io.c:1275 [inline]
RIP: 0010:[<ffffffff815dd965>]  [<00000000ab9b7e33>] __blockdev_direct_IO+0x1c55/0xd370 fs/direct-io.c:1361
RSP: 0018:ffff8801d51ef310  EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffea0006af941c RCX: ffffc90000927000
RDX: 0000000000000004 RSI: ffffffff815dd948 RDI: 0000000000000020
RBP: ffff8801d51ef650 R08: 0000000000000000 R09: ffff8801ca45ea00
R10: ffffed003948bd4d R11: ffff8801ca45ea6f R12: ffffea0006af9400
R13: ffffea0006af9400 R14: 0000000000000000 R15: ffff8801a183da00
FS:  00007fa08020b700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c42d105000 CR3: 00000001d86a6000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000 0000000000000003 1ffff10039381afd ffff8801c9c0d7e8
 ffff8801c9c0c740 ffff8801d51ef440 0005080000000000 0000000000001000
 ffff8801a183da79 ffff8801c9c0c740 ffff8801d915e780 ffff880100000000
Call Trace:
 [<00000000635fd959>] ext4_direct_IO_write fs/ext4/inode.c:3504 [inline]
 [<00000000635fd959>] ext4_direct_IO+0xa1d/0x29b0 fs/ext4/inode.c:3660
 [<00000000a934a631>] generic_file_direct_write+0x293/0x520 mm/filemap.c:2841
 [<00000000b7763b90>] __generic_file_write_iter+0x20f/0x530 mm/filemap.c:3021
 [<00000000bb77b945>] ext4_file_write_iter+0x6e7/0xcd0 fs/ext4/file.c:165
 [<00000000eea00838>] vfs_iter_write+0x2e2/0x580 fs/read_write.c:390
 [<0000000080e735c9>] iter_file_splice_write+0x5a9/0xb10 fs/splice.c:768
 [<00000000567c5f9d>] do_splice_from fs/splice.c:870 [inline]
 [<00000000567c5f9d>] do_splice fs/splice.c:1166 [inline]
 [<00000000567c5f9d>] SYSC_splice fs/splice.c:1416 [inline]
 [<00000000567c5f9d>] SyS_splice+0xe02/0x14c0 fs/splice.c:1399
 [<00000000ba178e33>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<00000000fec01f98>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: b2 81 e6 ff e9 b3 77 00 00 e8 b8 4d d4 ff 48 8b 84 24 f8 00 00 00 48 8d 78 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 bc 96 00 00 48 8b 84 24 f8 00 00 00 4c 8b 68 
RIP  [<00000000ab9b7e33>] __read_once_size include/linux/compiler.h:264 [inline]
RIP  [<00000000ab9b7e33>] compound_head include/linux/page-flags.h:145 [inline]
RIP  [<00000000ab9b7e33>] get_page include/linux/mm.h:772 [inline]
RIP  [<00000000ab9b7e33>] submit_page_section fs/direct-io.c:826 [inline]
RIP  [<00000000ab9b7e33>] do_direct_IO fs/direct-io.c:1046 [inline]
RIP  [<00000000ab9b7e33>] do_blockdev_direct_IO fs/direct-io.c:1275 [inline]
RIP  [<00000000ab9b7e33>] __blockdev_direct_IO+0x1c55/0xd370 fs/direct-io.c:1361
 RSP <ffff8801d51ef310>
---[ end trace 5c8d391fe0b5a07d ]---