Zheng Wang 5e331022b4 nfc: st-nci: Fix use after free bug in ndlc_remove due to race condition ... [ Upstream commit 5000fe6c27 ] This bug influences both st_nci_i2c_remove and st_nci_spi_remove. Take st_nci_i2c_remove as an example. In st_nci_i2c_probe, it called ndlc_probe and bound &ndlc->sm_work with llt_ndlc_sm_work. When it calls ndlc_recv or timeout handler, it will finally call schedule_work to start the work. When we call st_nci_i2c_remove to remove the driver, there may be a sequence as follows: Fix it by finishing the work before cleanup in ndlc_remove CPU0 CPU1 |llt_ndlc_sm_work st_nci_i2c_remove | ndlc_remove | st_nci_remove | nci_free_device| kfree(ndev) | //free ndlc->ndev | |llt_ndlc_rcv_queue |nci_recv_frame |//use ndlc->ndev Fixes: 35630df68d ("NFC: st21nfcb: Add driver for STMicroelectronics ST21NFCB NFC chip") Signed-off-by: Zheng Wang <zyytlz.wz@163.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20230312160837.2040857-1-zyytlz.wz@163.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-03-22 13:33:46 +01:00
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Kconfig	…
Makefile	…
core.c	…
i2c.c	…
ndlc.c	nfc: st-nci: Fix use after free bug in ndlc_remove due to race condition	2023-03-22 13:33:46 +01:00
ndlc.h	…
se.c	nfc: fix memory leak of se_io context in nfc_genl_se_io	2023-03-11 13:55:27 +01:00
spi.c	…
st-nci.h	…
vendor_cmds.c	…