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a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=GoEa3M9JfhUA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VwQbUJbxAAAA:8 a=i0EeH86SAAAA:8 a=YS-dSGhIofRX88d7sLYA:9 a=QEXdDO2ut3YA:10 cc=ntf awl=host:13634 X-Proofpoint-ORIG-GUID: XiXgb8M9kIqV6yPoF4x3Ox7ECFTgLLQw X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTA2MDEzNCBTYWx0ZWRfX4pUxcJqYXm6+ aynwGrWN5EfMdZswVYfuMb6EdJHcwb+DtF9YivCbY8QHF2c68TUjQp0z8AXHqFHO0FuMhoPt5Mb YgKjJNPaPwX+sdTJdunniHuvbXVyWMYfC7GAw128SDNcyq9a+LeTdRGbvz28x2yAonx/c3eWaDl KQVOa0OY5ETFS0EFTRAczwIHcNXCuvxbO/Jzkq0c/RYQ2xkdG7+lxg8AgQxHwlIifZ41wN35r2O 8oBHFPPi3/0jmPeiZiMEnTVUfJlfhAEgVuh2KV3QKdzZC1eMYDD0VnLAj5CeWeYMiWIQ0+wXGOl EI2Mq+gOqaSXs9jNPrqdxoUKiPqY+MkoZNyxias8O4LqwmiN7pmnD3W7VWflnp+RsaHLkKVfQQk HzSLPT6GsZ0KULZp8cXuNBBjkXWf1fXii/RzH2gx1VrORTW2ZhE= X-Proofpoint-GUID: XiXgb8M9kIqV6yPoF4x3Ox7ECFTgLLQw On 06/11/2025 12:03, JiangJianJun wrote: >> I got this patch 3x times... > Sorry, command has an error, i thought it had failed, so I sent it again. > >> What do you mean by "checked during cancellation"? > & >> I don't know what is meant by "cancel the command properly". > Maybe I shouldn't use "cancel" to describe it; in the code, it's called "abort". > The function `sdebug_timeout_cmd` is designed to simulate a command timeout, by > discarding it. I noticed that you added a check to see if the command was > executed before "abort"; otherwise, it returns a failure. When we get discard the command, we get a timeout, and the scsi error handling kicks in eventually. The first thing that the scsi error handler tries to do is abort the command. All that the scsi_debug abort handler can do is ensure that we no longer have a reference to the scsi_command, which may mean cancelling any pending completion (if possible). Is your problem that sometimes the abort handler may fail, and we have to escalate? > Therefore, I change discarding to long-long-delay, so that "abort" will succeed. > If we needed abort-failure, we can inject ERR_ABORT_CMD_FAILED. > > The fault-injection can be seen this link: > https://urldefense.com/v3/__https://lore.kernel.org/r/20231010092051.608007-5-haowenchao2@huawei.com__;!!ACWV5N9M2RV99hQ!L_o5Xt_9lhXLe0R8AWsJWnt33qXlNijbVEWyiq9kjgA2lBsuV7E2s7ficvGM37RlSxxvXVZ1YEkAQxZ-WkFvKGTURrU$ > >