general protection fault, probably for non-canonical address 0xdffffc000000001e: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000f0-0x00000000000000f7]
CPU: 0 PID: 6856 Comm: systemd-udevd Not tainted 5.9.0-rc1-next-20200821-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:bdev_read_page+0x37/0x290 fs/block_dev.c:690
Code: 4c 8d b3 f0 00 00 00 48 83 ec 10 48 89 54 24 08 48 89 34 24 e8 2a e9 a3 ff 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 01 00 00 48 8b ab f0 00 00 00 48 ba 00 00 00
RSP: 0018:ffffc900052a7560 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81d158aa
RDX: 000000000000001e RSI: ffffffff81d08996 RDI: 0000000000000000
RBP: fff8974745d00000 R08: 0000000000000001 R09: ffffea00029903c7
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 00000000000000f0 R15: ffffc900052a7780
FS:  00007f44b8b498c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc965141c4 CR3: 00000000a65fc000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_mpage_readpage+0x10ca/0x1ef0 fs/mpage.c:302
 mpage_readahead+0x3a3/0x880 fs/mpage.c:391
 read_pages+0x1df/0x8d0 mm/readahead.c:130
 page_cache_readahead_unbounded+0x572/0x850 mm/readahead.c:244
 __do_page_cache_readahead mm/readahead.c:273 [inline]
 force_page_cache_readahead+0x2e9/0x460 mm/readahead.c:303
 page_cache_sync_readahead mm/readahead.c:580 [inline]
 page_cache_sync_readahead+0x113/0x130 mm/readahead.c:567
 generic_file_buffered_read+0x159d/0x3150 mm/filemap.c:2103
 generic_file_read_iter+0x396/0x4e0 mm/filemap.c:2407
 blkdev_read_iter+0x11b/0x180 fs/block_dev.c:1927
 call_read_iter include/linux/fs.h:1876 [inline]
 new_sync_read+0x41a/0x6e0 fs/read_write.c:415
 vfs_read+0x383/0x5a0 fs/read_write.c:481
 ksys_read+0x12d/0x250 fs/read_write.c:607
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f44b7c90210
Code: 73 01 c3 48 8b 0d 98 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d b9 c1 20 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 4e fc ff ff 48 89 04 24
RSP: 002b:00007ffd0636d0f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000056283ad04a80 RCX: 00007f44b7c90210
RDX: 0000000000000400 RSI: 000056283ad04aa8 RDI: 000000000000000f
RBP: 000056283ad014f0 R08: 00007f44b7c7af68 R09: 0000000000000430
R10: 000056283ad04a98 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000400 R14: 000056283ad01540 R15: 0000000000000400
Modules linked in:
---[ end trace 1e93c332757bb044 ]---
RIP: 0010:bdev_read_page+0x37/0x290 fs/block_dev.c:690
Code: 4c 8d b3 f0 00 00 00 48 83 ec 10 48 89 54 24 08 48 89 34 24 e8 2a e9 a3 ff 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 01 00 00 48 8b ab f0 00 00 00 48 ba 00 00 00
RSP: 0018:ffffc900052a7560 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81d158aa
RDX: 000000000000001e RSI: ffffffff81d08996 RDI: 0000000000000000
RBP: fff8974745d00000 R08: 0000000000000001 R09: ffffea00029903c7
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 00000000000000f0 R15: ffffc900052a7780
FS:  00007f44b8b498c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe193156000 CR3: 00000000a65fc000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400