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U2FsdGVkX1/6P97xwZdpvaNsGkATcw2SPwl4RQwNUqgJtR9O5pfbFfJlkUliE1RvEUVgdG4EOIuQQFik6hDga01rN7rF2MY223eMzTNOuaXlI3Wpflqii4si3JeIj1NnNNBeXur6INIVWhZTrbNqJe0eBIaxs3lJKyAae11g+M7EElfbA78CxdwUuL6WyR47bN41vMv1pShcjq7ATvgOQZu/67WQwnNH1JYgaluddqe2NtlaPQ8gxSj7My8zW5JNrwm90e+sav0F76p06WHWOMCyMUjNCJJ3xb2KSbi5R72nLBP+uApD+GrtneX9Pm8/sCmjUdNSUKVgSN8rnaNuthgXFvJDCTVjRs5n9oqMhlmbNSz5t6ncB0aCQVTKPuzYchmuMjplaZpcwgx1sB4FmIKVdj+Y4M3pGX/qEqORd2CC8Lr3MrxEXDZb80Y636F4WW86e0Ffq92I4Vst2a7GTrdKF1f4ktJQrvSV35uFAhVFMfy3oPjucd4dM4Nm98D8sU3+MBcovVxVoW9uUO58QLQt+b9/eZCEf3BxZ0SQ2n94AAF6/SFEfEdEG8nKBZqIq51ScW5aBL24dALsBGyHEYwHqSPFWf1MVndIzxIXoVORU2EEcig7/3kN0HM3TZWqAruHd6fpQl+qr8bUI4M8sDN7L7dkInh5zINdSmu9RyxxS3Wpk122FfMljHLZc8O6wrCAb2J3u63HucBiatwuEIoa6Yh6IZFLbMahjGqi6DydMPryp5KVOY+Hd4uKEvPivVWBVQf+QDtDOIy4MR9iW5d1CM2yaLIhRdGW312c2ZjztHg/K2XLm30meBKlVZaqhUUrapOA7w3Lrg3yq5XUSjj9j48fh2emaXiCjDqNZjZtNQWW2+Mw7iUJoGKI8K1aJh4DUFTsgGtyQ0VujVDaUPwM5rrZUOa6JmEnNSRRXE8lUNgLbE1npN24U/goZkW2WLzT55zwtemFkCtzVly y/cUPf2m 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Feb 26, 2025 at 05:11:59PM +0900, Hyesoo Yu wrote: > Dear Maintainer, > > The purpose is to improve the debugging capabilities of the slub allocator > when a error occurs. The following improvements have been made: > > - Added WARN() calls at specific locations (slab_err, object_err) to detect > errors effectively and to generate a crash dump if panic_on_warn is enabled. > > - Additionally, the error printing location in check_object has been adjusted to > display the broken data before the restoration process. This improvement > allows for a better understanding of how the data was corrupted. > > This series combines two patches that were discussed seperately in the links below. > https://urldefense.com/v3/__https://lore.kernel.org/linux-mm/20250120082908.4162780-1-hyesoo.yu@samsung.com/__;!!ACWV5N9M2RV99hQ!JpvsczvJJcu4xw6xseDcLQJyiNXgZmwubb5cXEfORBj3VslI2ZTgmipoW7pdQ6qTldrr0mnk2l99xw3nio0$ > https://urldefense.com/v3/__https://lore.kernel.org/linux-mm/20250120083023.4162932-1-hyesoo.yu@samsung.com/__;!!ACWV5N9M2RV99hQ!JpvsczvJJcu4xw6xseDcLQJyiNXgZmwubb5cXEfORBj3VslI2ZTgmipoW7pdQ6qTldrr0mnk2l99Cdp4khE$ IMHO it will be helpful if the cover letter includes error reporting output before and after this patch series. -- Cheers, Harry > Thanks you. > > version 2 changes > - Replaced direct calling of BUG_ON with the use of WARN() to trigger a panic. > - Modified the code to print the broken data only once before the restore. > > version 3 changes > - Moved WARN() from slab_fix to slab_err and object to call WARN on all error > reporting paths. > - Changed the parameter type of check_bytes_and_report. > > version 4 changes > - Modified the print format to include specific error names. > - Removed the redundant warning by removing WARN() in kmem_cache_destroy > > Hyesoo Yu (2): > mm: slub: Print the broken data before restoring slub. > mm: slub: call WARN() when the slab detect an error > > mm/slab_common.c | 3 --- > mm/slub.c | 63 +++++++++++++++++++++++++----------------------- > 2 files changed, 33 insertions(+), 33 deletions(-) > > -- > 2.28.0