bisecting fixing commit since c04fc6fa5c96ec57316527b2228fa31f26494abe building syzkaller on 3de7aabbb79a6c2267f5d7ee8a8aaa83f63305b7 testing commit c04fc6fa5c96ec57316527b2228fa31f26494abe with gcc (GCC) 8.1.0 kernel signature: a15e7e2664330872cf2db2bf1587fe25f23ec5fe0646d10fae2e7ad53411f696 run #0: crashed: INFO: task hung in genl_rcv_msg run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK testing current HEAD 98db2bf27b9ed2d5ed0b6c9c8a4bfcb127a19796 testing commit 98db2bf27b9ed2d5ed0b6c9c8a4bfcb127a19796 with gcc (GCC) 8.1.0 kernel signature: 9f1c58c42908f6257f14421848ae186439e407c81d267f6de12cf4522d6b159b all runs: OK # git bisect start 98db2bf27b9ed2d5ed0b6c9c8a4bfcb127a19796 c04fc6fa5c96ec57316527b2228fa31f26494abe Bisecting: 393 revisions left to test after this (roughly 9 steps) [c8d45c212e5066ec20efca6dbe47f88096c33161] mic: avoid statically declaring a 'struct device'. testing commit c8d45c212e5066ec20efca6dbe47f88096c33161 with gcc (GCC) 8.1.0 kernel signature: 5af0a44e2d09e6b970e216e0b29ec7dc39519b6f5e0b844d6bb5c35ba74043ee run #0: crashed: INFO: task hung in genl_rcv_msg run #1: crashed: INFO: task hung in genl_rcv_msg run #2: crashed: INFO: task hung in genl_rcv_msg run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good c8d45c212e5066ec20efca6dbe47f88096c33161 Bisecting: 196 revisions left to test after this (roughly 8 steps) [95f5057bb1a300e840e697463003cb242fa491bd] wireless: wext: avoid gcc -O3 warning testing commit 95f5057bb1a300e840e697463003cb242fa491bd with gcc (GCC) 8.1.0 kernel signature: 068d39c9ac58cefc37977e3cd736a87b6bdd00e74d39447f21da43f364f5e4a2 run #0: crashed: INFO: task hung in genl_rcv_msg run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good 95f5057bb1a300e840e697463003cb242fa491bd Bisecting: 98 revisions left to test after this (roughly 7 steps) [4274984b78716c7cd8686c5d9ae0e9c319760ff8] sunrpc: expiry_time should be seconds not timeval testing commit 4274984b78716c7cd8686c5d9ae0e9c319760ff8 with gcc (GCC) 8.1.0 kernel signature: 0208325b22945ab96a6218a98079f13be3e730403c8c2005d53468a7d7b086c5 all runs: OK # git bisect bad 4274984b78716c7cd8686c5d9ae0e9c319760ff8 Bisecting: 48 revisions left to test after this (roughly 6 steps) [d219e276b2bc7c5517bcd822e9c6ccb3cfbfa0c3] ALSA: dummy: Fix PCM format loop in proc output testing commit d219e276b2bc7c5517bcd822e9c6ccb3cfbfa0c3 with gcc (GCC) 8.1.0 kernel signature: 055422862c1b859102c963fdcf3e8adcfde21eaa5fc76894f5829dcfcf537d94 all runs: OK # git bisect bad d219e276b2bc7c5517bcd822e9c6ccb3cfbfa0c3 Bisecting: 24 revisions left to test after this (roughly 5 steps) [e0f8b8a65a473a8baa439cf865a694bbeb83fe90] Linux 4.14.170 testing commit e0f8b8a65a473a8baa439cf865a694bbeb83fe90 with gcc (GCC) 8.1.0 kernel signature: af70d93c99e37ef9646b241e9f6b3890278e8d58d23dc77bc8df613dc19fb917 run #0: crashed: INFO: task hung in genl_rcv_msg run #1: crashed: INFO: task hung in genl_rcv_msg run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good e0f8b8a65a473a8baa439cf865a694bbeb83fe90 Bisecting: 12 revisions left to test after this (roughly 4 steps) [24070b40926b42c35ca0649f44711cad5da0cf96] tcp: clear tp->total_retrans in tcp_disconnect() testing commit 24070b40926b42c35ca0649f44711cad5da0cf96 with gcc (GCC) 8.1.0 kernel signature: 5973023af1179b0274970aefe27b688e237072868185c250755bf1da8d91fb69 all runs: OK # git bisect bad 24070b40926b42c35ca0649f44711cad5da0cf96 Bisecting: 5 revisions left to test after this (roughly 3 steps) [44220931fc222da3f15efe15495c9f022ace499c] cls_rsvp: fix rsvp_policy testing commit 44220931fc222da3f15efe15495c9f022ace499c with gcc (GCC) 8.1.0 kernel signature: cb79c0d5bac404993fa082b9217041fdc54e3f33c685740c9ad204d0950c5d01 run #0: crashed: INFO: task hung in genl_rcv_msg run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good 44220931fc222da3f15efe15495c9f022ace499c Bisecting: 2 revisions left to test after this (roughly 2 steps) [7950ef09699d175bfec32d318d547c845462cc2f] net: hsr: fix possible NULL deref in hsr_handle_frame() testing commit 7950ef09699d175bfec32d318d547c845462cc2f with gcc (GCC) 8.1.0 kernel signature: 713d769536075c475f42d330f034a255b95e2e7e53a6cedcfde11f81190a2995 run #0: crashed: INFO: task hung in genl_rcv_msg run #1: crashed: INFO: task hung in genl_rcv_msg run #2: crashed: INFO: task hung in genl_rcv_msg run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good 7950ef09699d175bfec32d318d547c845462cc2f Bisecting: 0 revisions left to test after this (roughly 1 step) [fa32d7ce0cf8c04cefa72c87a95f222164be0131] bnxt_en: Fix TC queue mapping. testing commit fa32d7ce0cf8c04cefa72c87a95f222164be0131 with gcc (GCC) 8.1.0 kernel signature: 4cc4d0dffd79d5760327b9a26c68aac20f56fe3b458cd9a77c93bf04e01eb35b run #0: crashed: INFO: task hung in genl_rcv_msg run #1: crashed: INFO: task hung in genl_rcv_msg run #2: crashed: INFO: task hung in genl_rcv_msg run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good fa32d7ce0cf8c04cefa72c87a95f222164be0131 24070b40926b42c35ca0649f44711cad5da0cf96 is the first bad commit commit 24070b40926b42c35ca0649f44711cad5da0cf96 Author: Eric Dumazet Date: Fri Jan 31 09:14:47 2020 -0800 tcp: clear tp->total_retrans in tcp_disconnect() [ Upstream commit c13c48c00a6bc1febc73902505bdec0967bd7095 ] total_retrans needs to be cleared in tcp_disconnect(). tcp_disconnect() is rarely used, but it is worth fixing it. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Eric Dumazet Cc: SeongJae Park Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman net/ipv4/tcp.c | 1 + 1 file changed, 1 insertion(+) culprit signature: 5973023af1179b0274970aefe27b688e237072868185c250755bf1da8d91fb69 parent signature: 4cc4d0dffd79d5760327b9a26c68aac20f56fe3b458cd9a77c93bf04e01eb35b revisions tested: 11, total time: 3h28m1.784125986s (build: 1h37m36.210996788s, test: 1h49m13.547889311s) first good commit: 24070b40926b42c35ca0649f44711cad5da0cf96 tcp: clear tp->total_retrans in tcp_disconnect() cc: ["edumazet@google.com" "gregkh@linuxfoundation.org" "kuba@kernel.org"]