BUG: attempting to access two shadow page ranges. CPU: 0 PID: 12506 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: 0033:0x7fbe3c06e9b7 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:00007fff0dd2b1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000021 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 00007fbe3c06e9b7 RDX: 0000000000619b50 RSI: 0000000000000001 RDI: 000000000000000b RBP: 0000000002250200 R08: 0000000000000000 R09: 00000000000030da R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000224fb38 R14: 0000000000000000 R15: 0000000000000000 Access of size 8192 at ffff888106aa6000. Addresses belonging to different ranges: ffff888106aa6000 and ffff888106aa7000 page[0].shadow: ffff888109da5000, page[1].shadow: ffff888109055000 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: 12506 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:ffff88810ff3e570 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff888106aa6000 RCX: e6b0af50bd209500 RDX: 0000000000000000 RSI: ffffea000a9c9320 RDI: 000000000f6a0978 RBP: ffff88810ff3e618 R08: 0000000000000002 R09: ffff888217c4cb04 R10: 0000000000000004 R11: ffffffff86669af0 R12: ffff88811304e468 R13: 0000000000002000 R14: 0000000000002000 R15: 0000160000000000 FS: 00007fbe3c540700(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000619b50 CR3: 00000001111cb000 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: 0033:0x7fbe3c06e9b7 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:00007fff0dd2b1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000021 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 00007fbe3c06e9b7 RDX: 0000000000619b50 RSI: 0000000000000001 RDI: 000000000000000b RBP: 0000000002250200 R08: 0000000000000000 R09: 00000000000030da R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000224fb38 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 70170d5423dc6a80 ]--- 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:ffff88810ff3e570 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff888106aa6000 RCX: e6b0af50bd209500 RDX: 0000000000000000 RSI: ffffea000a9c9320 RDI: 000000000f6a0978 RBP: ffff88810ff3e618 R08: 0000000000000002 R09: ffff888217c4cb04 R10: 0000000000000004 R11: ffffffff86669af0 R12: ffff88811304e468 R13: 0000000000002000 R14: 0000000000002000 R15: 0000160000000000 FS: 00007fbe3c540700(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000619b50 CR3: 00000001111cb000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400