CVE-2024-35787

In the Linux kernel, the following vulnerability has been resolved:

md/md-bitmap: fix incorrect usage for sb_index

Commit d7038f951828 ("md-bitmap: don't use ->index for pages backing the bitmap file") removed page->index from bitmap code, but left wrong code logic for clustered-md. current code never set slot offset for cluster nodes, will sometimes cause crash in clustered env.

Call trace (partly): mdbitmapfilesetbit+0x110/0x1d8 [mdmod] mdbitmapstartwrite+0x13c/0x240 [mdmod] raid1makerequest+0x6b0/0x1c08 [raid1] mdhandlerequest+0x1dc/0x368 [mdmod] mdsubmitbio+0x80/0xf8 [mdmod] _submitbio+0x178/0x300 submitbionoacctnocheck+0x11c/0x338 submitbionoacct+0x134/0x614 submitbio+0x28/0xdc submitbhwbc+0x130/0x1cc submit_bh+0x1c/0x28