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kernel BUG at ./include/linux/pagemap.h:1398!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 10970 Comm: syz.4.1071 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:mpage_readahead+0x637/0x650
Code: c6 e0 f6 99 8b e8 89 42 e1 fe 90 0f 0b e8 81 f4 78 ff 4c 89 ef 48 c7 c6 40 f7 99 8b e8 72 42 e1 fe 90 0f 0b e8 6a f4 78 ff 90 <0f> 0b e8 62 f4 78 ff 90 0f 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00
RSP: 0018:ffffc90003267100 EFLAGS: 00010246
RAX: ffffffff8246b9a6 RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc90028e10000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900032672f0 R08: ffffea0000a6ae07 R09: 1ffffd400014d5c0
R10: dffffc0000000000 R11: fffff9400014d5c1 R12: dffffc0000000000
R13: ffffc90003267728 R14: 0000000000000004 R15: ffffc90003267740
FS:  00007fcef4dbf6c0(0000) GS:ffff8880b8618000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d20fff8 CR3: 0000000032282000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 read_pages+0x17a/0x580
 page_cache_ra_unbounded+0x6b0/0x7b0
 page_cache_sync_ra+0x3b9/0xb10
 filemap_get_pages+0x43c/0x1ea0
 filemap_splice_read+0x581/0xc60
 splice_direct_to_actor+0x4a9/0xcc0
 do_splice_direct+0x181/0x270
 do_sendfile+0x4da/0x7e0
 __se_sys_sendfile64+0x13e/0x190
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcef3f8ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcef4dbf038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fcef41c5fa0 RCX: 00007fcef3f8ebe9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007fcef4011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcef41c6038 R14: 00007fcef41c5fa0 R15: 00007ffc3bd8b248
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:mpage_readahead+0x637/0x650
Code: c6 e0 f6 99 8b e8 89 42 e1 fe 90 0f 0b e8 81 f4 78 ff 4c 89 ef 48 c7 c6 40 f7 99 8b e8 72 42 e1 fe 90 0f 0b e8 6a f4 78 ff 90 <0f> 0b e8 62 f4 78 ff 90 0f 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00
RSP: 0018:ffffc90003267100 EFLAGS: 00010246
RAX: ffffffff8246b9a6 RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc90028e10000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900032672f0 R08: ffffea0000a6ae07 R09: 1ffffd400014d5c0
R10: dffffc0000000000 R11: fffff9400014d5c1 R12: dffffc0000000000
R13: ffffc90003267728 R14: 0000000000000004 R15: ffffc90003267740
FS:  00007fcef4dbf6c0(0000) GS:ffff8880b8618000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d206ff8 CR3: 0000000032282000 CR4: 00000000000006f0
