Messages in this thread Patch in this message |  | | Date | Thu, 2 Apr 2026 19:04:31 +0800 | | Subject | [PATCH 1/5] ipmi: ssif_bmc: cancel response timer on remove | | From | "Jian Zhang" <> |
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The response timer can stay armed across device teardown. If it fires after remove, the callback dereferences the SSIF context and the i2c client after teardown has started.
Cancel the timer in remove so the callback cannot run after the device is unregistered.
Fixes: dd2bc5cc9e25 ("ipmi: ssif_bmc: Add SSIF BMC driver") Signed-off-by: Jian Zhang <zhangjian.3032@bytedance.com> --- drivers/char/ipmi/ssif_bmc.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/char/ipmi/ssif_bmc.c b/drivers/char/ipmi/ssif_bmc.c index 7a52e3ea49ed..348e29490945 100644 --- a/drivers/char/ipmi/ssif_bmc.c +++ b/drivers/char/ipmi/ssif_bmc.c @@ -843,6 +843,7 @@ static void ssif_bmc_remove(struct i2c_client *client) { struct ssif_bmc_ctx *ssif_bmc = i2c_get_clientdata(client); + del_timer_sync(&ssif_bmc->response_timer); i2c_slave_unregister(client); misc_deregister(&ssif_bmc->miscdev); } -- 2.20.1
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