On Fri 23-09-22 12:38:58, Florian Westphal wrote: > Martin Zaharinov reports BUG() in mm land for 5.19.10 kernel: > kernel BUG at mm/vmalloc.c:2437! > invalid opcode: 0000 [#1] SMP > CPU: 28 PID: 0 Comm: swapper/28 Tainted: G W O 5.19.9 #1 > [..] > RIP: 0010:__get_vm_area_node+0x120/0x130 > __vmalloc_node_range+0x96/0x1e0 > kvmalloc_node+0x92/0xb0 > bucket_table_alloc.isra.0+0x47/0x140 > rhashtable_try_insert+0x3a4/0x440 > rhashtable_insert_slow+0x1b/0x30 > [..] > > bucket_table_alloc uses kvzallocGPF_ATOMIC). If kmalloc fails, this now > falls through to vmalloc and hits code paths that assume GFP_KERNEL. > > Revert the problematic change and stay with slab allocator. Why don't you simply fix the caller? -- Michal Hocko SUSE Labs
