** Description changed:
- Since kernel commit cf338283652f ("slab: remove struct kmem_cache_cpu")
+ [ Impact ]
+
+ * Since kernel commit cf338283652f ("slab: remove struct kmem_cache_cpu")
in linux-next there is no more 'cpu_slab' member in struct kmem_cache.
Pick 'cpu_sheaves' as an alternative kmem_cache member for kernel-next to
identify the SLUB case.
+ * Without the patch (
https://github.com/crash-utility/crash/commit/fe017d7cb95ac4703ce59e4c72fd73a5fad3bcea
), crash fails to start on kernel 7.0 with the error message:
- Without the patch, crash fails to start on kernel-next with the error
- message:
+ crash: invalid structure member offset: kmem_cache_s_num
+ FILE: memory.c LINE: 9988 FUNCTION: kmem_cache_init()
+ * The fix patch is already upstream in crash and should appear in the next
version.
- crash: invalid structure member offset: kmem_cache_s_num
- FILE: memory.c LINE: 9988 FUNCTION: kmem_cache_init()
+ [ Test Plan ]
+
+ * Take a kdump of a resolute kernel.
+ * Install the debug symbols for the kernel.
+ * Run crash on the kernel debug symbols and the captured kdump.
+ * Confirm that crash loads successfully.
+
+ [ Where problems could occur ]
+
+ * If this check for cpu_sheaves is incorrect, it could cause crash to
+ not load a kdump successfully.
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https://bugs.launchpad.net/bugs/2147121
Title:
crash failure caused by struct kmem_cache changes from Linux kernel
7.0
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