On Fri, 24 Nov 2023 16:14:37 +0100, Markus Weippert wrote:
Commit 028ddcac477b ("bcache: Remove unnecessary NULL point check in node allocations") replaced IS_ERR_OR_NULL by IS_ERR. This leads to a NULL pointer dereference.
BUG: kernel NULL pointer dereference, address: 0000000000000080 Call Trace: ? __die_body.cold+0x1a/0x1f ? page_fault_oops+0xd2/0x2b0 ? exc_page_fault+0x70/0x170 ? asm_exc_page_fault+0x22/0x30 ? btree_node_free+0xf/0x160 [bcache] ? up_write+0x32/0x60 btree_gc_coalesce+0x2aa/0x890 [bcache] ? bch_extent_bad+0x70/0x170 [bcache] btree_gc_recurse+0x130/0x390 [bcache] ? btree_gc_mark_node+0x72/0x230 [bcache] bch_btree_gc+0x5da/0x600 [bcache] ? cpuusage_read+0x10/0x10 ? bch_btree_gc+0x600/0x600 [bcache] bch_gc_thread+0x135/0x180 [bcache]
[...]
Applied, thanks!
[1/1] bcache: revert replacing IS_ERR_OR_NULL with IS_ERR (no commit info)
Best regards,