kmsan boot error: BUG: attempting to access two shadow page ranges.

Status: auto-closed as invalid on 2020/01/19 03:36
Subsystems: virt
[Documentation on labels]
First crash: 2528d, last: 2527d

Sample crash report:
BUG: attempting to access two shadow page ranges.
CPU: 0 PID: 11586 Comm: bootlogs Not tainted 5.4.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x191/0x1f0 lib/dump_stack.c:113
 metadata_is_contiguous+0x111/0x270 mm/kmsan/kmsan.c:517
 kmsan_internal_check_memory+0x37/0x4a0 mm/kmsan/kmsan.c:404
 kmsan_handle_dma+0x48/0x50 mm/kmsan/kmsan_hooks.c:409
 vring_map_one_sg+0x4b3/0x630 drivers/virtio/virtio_ring.c:336
 virtqueue_add_split drivers/virtio/virtio_ring.c:491 [inline]
 virtqueue_add+0x36ab/0x5f60 drivers/virtio/virtio_ring.c:1714
 virtqueue_add_sgs+0x319/0x330 drivers/virtio/virtio_ring.c:1748
 __virtscsi_add_cmd drivers/scsi/virtio_scsi.c:447 [inline]
 virtscsi_add_cmd+0x873/0xb00 drivers/scsi/virtio_scsi.c:481
 virtscsi_queuecommand+0xe81/0x1090 drivers/scsi/virtio_scsi.c:578
 scsi_dispatch_cmd drivers/scsi/scsi_lib.c:1555 [inline]
 scsi_queue_rq+0x4116/0x4c70 drivers/scsi/scsi_lib.c:1690
 blk_mq_dispatch_rq_list+0xec5/0x2850 block/blk-mq.c:1273
 blk_mq_do_dispatch_sched block/blk-mq-sched.c:115 [inline]
 blk_mq_sched_dispatch_requests+0xc00/0x1850 block/blk-mq-sched.c:216
 __blk_mq_run_hw_queue+0x170/0x3a0 block/blk-mq.c:1403
 __blk_mq_delay_run_hw_queue+0x14c/0x6b0 block/blk-mq.c:1471
 blk_mq_run_hw_queue+0x4ac/0x690 block/blk-mq.c:1508
 blk_mq_sched_insert_requests+0x4a5/0x650 block/blk-mq-sched.c:444
 blk_mq_flush_plug_list+0x1142/0x1170 block/blk-mq.c:1772
 blk_flush_plug_list+0x708/0x790 block/blk-core.c:1766
 blk_mq_make_request+0x1ba2/0x30a0 block/blk-mq.c:2014
 generic_make_request+0x41d/0x1280 block/blk-core.c:1064
 submit_bio+0x480/0x970 block/blk-core.c:1190
 ext4_io_submit+0x1fd/0x300 fs/ext4/page-io.c:348
 ext4_writepages+0x4df4/0x6690 fs/ext4/inode.c:2899
 do_writepages+0x189/0x400 mm/page-writeback.c:2344
 __filemap_fdatawrite_range+0x53b/0x5b0 mm/filemap.c:421
 __filemap_fdatawrite mm/filemap.c:429 [inline]
 filemap_flush+0x66/0x70 mm/filemap.c:456
 ext4_alloc_da_blocks+0x247/0x2b0 fs/ext4/inode.c:3243
 ext4_release_file+0xa0/0x3e0 fs/ext4/file.c:88
 __fput+0x4c9/0xba0 fs/file_table.c:280
 ____fput+0x37/0x40 fs/file_table.c:313
 task_work_run+0x22e/0x2a0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop arch/x86/entry/common.c:163 [inline]
 prepare_exit_to_usermode+0x39d/0x4d0 arch/x86/entry/common.c:194
 syscall_return_slowpath+0x90/0x610 arch/x86/entry/common.c:274
 do_syscall_64+0xdc/0x160 arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x7f6302d2c9b7
Code: 73 01 c3 48 8b 0d 81 44 2b 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 90 90 90 b8 21 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 44 2b 00 31 d2 48 29 c2 64
RSP: 002b:00007fff09ae11f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000021
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 00007f6302d2c9b7
RDX: 0000000000619b50 RSI: 0000000000000001 RDI: 000000000000000b
RBP: 0000000001880200 R08: 0000000000000000 R09: 0000000000002d42
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000187fb38 R14: 0000000000000000 R15: 0000000000000000

Access of size 8192 at ffff88810ab12000.
Addresses belonging to different ranges: ffff88810ab12000 and ffff88810ab13000
page[0].shadow: ffff88810ad52000, page[1].shadow: ffff888106472000
Origin: 00000000
Origin not found, presumably a false report.
------------[ cut here ]------------
kernel BUG at mm/kmsan/kmsan.c:404!
invalid opcode: 0000 [#1] SMP
CPU: 0 PID: 11586 Comm: bootlogs Not tainted 5.4.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kmsan_internal_check_memory+0x46e/0x4a0 mm/kmsan/kmsan.c:422
Code: 31 c0 e8 f2 f9 72 ff 0f 0b 0f 0b 65 8b 35 4e 12 fd 7d 65 48 8b 15 d2 8f fd 7d 48 c7 c7 87 59 20 8f 31 c0 e8 d1 f9 72 ff 0f 0b <0f> 0b e8 bb c5 4e ff 0f 0b 0f 0b 65 8b 35 24 12 fd 7d 65 48 8b 15
RSP: 0018:ffff8881062ae570 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff88810ab12000 RCX: 112b4786f42ddf00
RDX: 0000000000000000 RSI: ffffea000a9c9320 RDI: 000000000f6a0978
RBP: ffff8881062ae618 R08: 0000000000000002 R09: ffff888217c4cb04
R10: 0000000000000004 R11: ffffffff86669af0 R12: ffff8881231ce468
R13: 0000000000002000 R14: 0000000000002000 R15: 0000160000000000
FS:  00007f63031fe700(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000619b50 CR3: 00000001024d7000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kmsan_handle_dma+0x48/0x50 mm/kmsan/kmsan_hooks.c:409
 vring_map_one_sg+0x4b3/0x630 drivers/virtio/virtio_ring.c:336
 virtqueue_add_split drivers/virtio/virtio_ring.c:491 [inline]
 virtqueue_add+0x36ab/0x5f60 drivers/virtio/virtio_ring.c:1714
 virtqueue_add_sgs+0x319/0x330 drivers/virtio/virtio_ring.c:1748
 __virtscsi_add_cmd drivers/scsi/virtio_scsi.c:447 [inline]
 virtscsi_add_cmd+0x873/0xb00 drivers/scsi/virtio_scsi.c:481
 virtscsi_queuecommand+0xe81/0x1090 drivers/scsi/virtio_scsi.c:578
 scsi_dispatch_cmd drivers/scsi/scsi_lib.c:1555 [inline]
 scsi_queue_rq+0x4116/0x4c70 drivers/scsi/scsi_lib.c:1690
 blk_mq_dispatch_rq_list+0xec5/0x2850 block/blk-mq.c:1273
 blk_mq_do_dispatch_sched block/blk-mq-sched.c:115 [inline]
 blk_mq_sched_dispatch_requests+0xc00/0x1850 block/blk-mq-sched.c:216
 __blk_mq_run_hw_queue+0x170/0x3a0 block/blk-mq.c:1403
 __blk_mq_delay_run_hw_queue+0x14c/0x6b0 block/blk-mq.c:1471
 blk_mq_run_hw_queue+0x4ac/0x690 block/blk-mq.c:1508
 blk_mq_sched_insert_requests+0x4a5/0x650 block/blk-mq-sched.c:444
 blk_mq_flush_plug_list+0x1142/0x1170 block/blk-mq.c:1772
 blk_flush_plug_list+0x708/0x790 block/blk-core.c:1766
 blk_mq_make_request+0x1ba2/0x30a0 block/blk-mq.c:2014
 generic_make_request+0x41d/0x1280 block/blk-core.c:1064
 submit_bio+0x480/0x970 block/blk-core.c:1190
 ext4_io_submit+0x1fd/0x300 fs/ext4/page-io.c:348
 ext4_writepages+0x4df4/0x6690 fs/ext4/inode.c:2899
 do_writepages+0x189/0x400 mm/page-writeback.c:2344
 __filemap_fdatawrite_range+0x53b/0x5b0 mm/filemap.c:421
 __filemap_fdatawrite mm/filemap.c:429 [inline]
 filemap_flush+0x66/0x70 mm/filemap.c:456
 ext4_alloc_da_blocks+0x247/0x2b0 fs/ext4/inode.c:3243
 ext4_release_file+0xa0/0x3e0 fs/ext4/file.c:88
 __fput+0x4c9/0xba0 fs/file_table.c:280
 ____fput+0x37/0x40 fs/file_table.c:313
 task_work_run+0x22e/0x2a0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop arch/x86/entry/common.c:163 [inline]
 prepare_exit_to_usermode+0x39d/0x4d0 arch/x86/entry/common.c:194
 syscall_return_slowpath+0x90/0x610 arch/x86/entry/common.c:274
 do_syscall_64+0xdc/0x160 arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x7f6302d2c9b7
Code: 73 01 c3 48 8b 0d 81 44 2b 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 90 90 90 b8 21 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 44 2b 00 31 d2 48 29 c2 64
RSP: 002b:00007fff09ae11f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000021
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 00007f6302d2c9b7
RDX: 0000000000619b50 RSI: 0000000000000001 RDI: 000000000000000b
RBP: 0000000001880200 R08: 0000000000000000 R09: 0000000000002d42
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000187fb38 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace a60b215520f4a806 ]---
RIP: 0010:kmsan_internal_check_memory+0x46e/0x4a0 mm/kmsan/kmsan.c:422
Code: 31 c0 e8 f2 f9 72 ff 0f 0b 0f 0b 65 8b 35 4e 12 fd 7d 65 48 8b 15 d2 8f fd 7d 48 c7 c7 87 59 20 8f 31 c0 e8 d1 f9 72 ff 0f 0b <0f> 0b e8 bb c5 4e ff 0f 0b 0f 0b 65 8b 35 24 12 fd 7d 65 48 8b 15
RSP: 0018:ffff8881062ae570 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff88810ab12000 RCX: 112b4786f42ddf00
RDX: 0000000000000000 RSI: ffffea000a9c9320 RDI: 000000000f6a0978
RBP: ffff8881062ae618 R08: 0000000000000002 R09: ffff888217c4cb04
R10: 0000000000000004 R11: ffffffff86669af0 R12: ffff8881231ce468
R13: 0000000000002000 R14: 0000000000002000 R15: 0000160000000000
FS:  00007f63031fe700(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000619b50 CR3: 00000001024d7000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (12):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/11/20 03:27 https://github.com/google/kmsan.git master 9f1525a972ef f4b7ed07 .config console log report ci-upstream-kmsan-gce
2019/11/20 03:27 https://github.com/google/kmsan.git master 9f1525a972ef f4b7ed07 .config console log report ci-upstream-kmsan-gce
2019/11/20 03:27 https://github.com/google/kmsan.git master 9f1525a972ef f4b7ed07 .config console log report ci-upstream-kmsan-gce
2019/11/20 02:16 https://github.com/google/kmsan.git master 9f1525a972ef 5bc70212 .config console log report ci-upstream-kmsan-gce
2019/11/20 02:16 https://github.com/google/kmsan.git master 9f1525a972ef 5bc70212 .config console log report ci-upstream-kmsan-gce
2019/11/20 02:16 https://github.com/google/kmsan.git master 9f1525a972ef 5bc70212 .config console log report ci-upstream-kmsan-gce
2019/11/19 01:57 https://github.com/google/kmsan.git master fb1b12d83836 5bc70212 .config console log report ci-upstream-kmsan-gce
2019/11/19 01:57 https://github.com/google/kmsan.git master fb1b12d83836 5bc70212 .config console log report ci-upstream-kmsan-gce
2019/11/19 01:57 https://github.com/google/kmsan.git master fb1b12d83836 5bc70212 .config console log report ci-upstream-kmsan-gce
2019/11/19 00:43 https://github.com/google/kmsan.git master fb1b12d83836 1daed50a .config console log report ci-upstream-kmsan-gce
2019/11/19 00:43 https://github.com/google/kmsan.git master fb1b12d83836 1daed50a .config console log report ci-upstream-kmsan-gce
2019/11/19 00:43 https://github.com/google/kmsan.git master fb1b12d83836 1daed50a .config console log report ci-upstream-kmsan-gce
* Struck through repros no longer work on HEAD.