WARNING: ram0 appears to be on the same physical disk as ram0.

Status: upstream: reported C repro on 2026/10/21 16:43
Reported-by: syzbot+e2293141741db550b9c8@syzkaller.appspotmail.com
First crash: 22d, last: 21d
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2026/11/08 upstream (ToT) fa4ad798f6f6 C Didn't crash

Sample crash report:
mdX: WARNING: ram0 appears to be on the same physical disk as ram0.
True protection against single-disk failure might be compromised.
md/raid10:mdX: unsupported raid10 layout: 0x       2
md: pers->run() failed ...
device-mapper: table: 248:3: raid: Failed to run raid array (-EINVAL)
device-mapper: ioctl: error adding target to table

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/21 16:42 linux-6.1.y 79807e970724 61c200c7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: ram0 appears to be on the same physical disk as ram0.
2026/10/23 01:42 linux-6.1.y 79807e970724 b55fad29 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING: ram0 appears to be on the same physical disk as ram0.
2026/10/23 01:11 linux-6.1.y 79807e970724 b55fad29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING: ram0 appears to be on the same physical disk as ram0.
* Struck through repros no longer work on HEAD.