5.4-stable review patch. If anyone has any objections, please let me know.
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From: Johannes Berg johannes.berg@intel.com
[ Upstream commit e7417421d89358da071fd2930f91e67c7128fbff ]
If the firmware gives bad input, that's nothing to do with the driver's stack at this point etc., so the WARN_ON() doesn't add any value. Additionally, this is one of the top syzbot reports now. Just print a message, and as an added bonus, print the sizes too.
Reported-by: syzbot+92c6dd14aaa230be6855@syzkaller.appspotmail.com Tested-by: syzbot+92c6dd14aaa230be6855@syzkaller.appspotmail.com Acked-by: Jeff Johnson jeff.johnson@oss.qualcomm.com Link: https://patch.msgid.link/20250617114529.031a677a348e.I58bf1eb4ac16a82c546725... Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/ath/ath6kl/bmi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath6kl/bmi.c b/drivers/net/wireless/ath/ath6kl/bmi.c index af98e871199d3..5a9e93fd1ef42 100644 --- a/drivers/net/wireless/ath/ath6kl/bmi.c +++ b/drivers/net/wireless/ath/ath6kl/bmi.c @@ -87,7 +87,9 @@ int ath6kl_bmi_get_target_info(struct ath6kl *ar, * We need to do some backwards compatibility to make this work. */ if (le32_to_cpu(targ_info->byte_count) != sizeof(*targ_info)) { - WARN_ON(1); + ath6kl_err("mismatched byte count %d vs. expected %zd\n", + le32_to_cpu(targ_info->byte_count), + sizeof(*targ_info)); return -EINVAL; }