diff mbox series

[net,3/4] net: wwan: iosm: fix crash in peek throughput test

Message ID 20221122174734.3496849-1-m.chetan.kumar@linux.intel.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series [net,1/4] net: wwan: iosm: fix kernel test robot reported error | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net
netdev/fixes_present success Fixes tag present in non-next series
netdev/subject_prefix success Link
netdev/cover_letter warning Series does not have a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers fail 1 blamed authors not CCed: m.chetan.kumar@intel.com; 1 maintainers not CCed: m.chetan.kumar@intel.com
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 12 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Kumar, M Chetan Nov. 22, 2022, 5:47 p.m. UTC 
From: M Chetan Kumar <m.chetan.kumar@linux.intel.com>

Peek throughput UL test is resulting in crash. If the UL
transfer block free list is exhaust, the peeked skb is freed.
In the next transfer freed skb is referred from UL list which
results in crash.

Don't free the skb if UL transfer blocks are unavailable. The
pending skb will be picked for transfer on UL transfer block
available.

Fixes: 1f52d7b62285 ("net: wwan: iosm: Enable M.2 7360 WWAN card support")
Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
---
 drivers/net/wwan/iosm/iosm_ipc_mux_codec.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--
2.34.1
diff mbox series

Patch

diff --git a/drivers/net/wwan/iosm/iosm_ipc_mux_codec.c b/drivers/net/wwan/iosm/iosm_ipc_mux_codec.c
index c16365123660..738420bd14af 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_mux_codec.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_mux_codec.c
@@ -1207,10 +1207,9 @@  static int mux_ul_dg_update_tbl_index(struct iosm_mux *ipc_mux,
 				 qlth_n_ql_size, ul_list);
 	ipc_mux_ul_adb_finish(ipc_mux);
 	if (ipc_mux_ul_adb_allocate(ipc_mux, adb, &ipc_mux->size_needed,
-				    IOSM_AGGR_MUX_SIG_ADBH)) {
-		dev_kfree_skb(src_skb);
+				    IOSM_AGGR_MUX_SIG_ADBH))
 		return -ENOMEM;
-	}
+
 	ipc_mux->size_needed = le32_to_cpu(adb->adbh->block_length);

 	ipc_mux->size_needed += offsetof(struct mux_adth, dg);