bisecting cause commit starting from c63ee2939dc1c6eee6c544af1b4ab441490bfe6e building syzkaller on 598ca6c8b8766304c3b2865e38f5f301c39bd299 testing commit c63ee2939dc1c6eee6c544af1b4ab441490bfe6e with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in requeue_rx_msgs run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.84 testing commit c555efaf14026c7751fa68d87403a5eb5ae7dcaf with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in requeue_rx_msgs testing release v4.19.83 testing commit 7d8dbefc22ff71c12c5f63ab0c6de7f70d1f044a with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: KASAN: use-after-free Write in kcm_done run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.82 testing commit 5ee93551c703f8fa1a6c414a7d08f956de311df3 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in requeue_rx_msgs run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.81 testing commit ef244c3088856cf048c77231653b4c92a7b2213c with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.80 testing commit c3038e718a19fc596f7b1baba0f83d5146dc7784 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.79 testing commit dafd634415a7f9892a6fcc99c540fe567ab42c92 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.78 testing commit 58fce20645303bee01d74144ec00e405be43b1ca with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.77 testing commit 6cad9d0cf87b95b10f3f4d7826c2c15e45e2a277 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.76 testing commit 555161ee1b7a74e77ca70fd14ed8a5137c8108ac with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.75 testing commit d573e8a79f70404ba08623d1de7ea617d55092ac with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.74 testing commit dbc29aff8d04f134553326a0c533a442a1774041 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.73 testing commit db2d0b7c1dde59b93045a6d011f392fb04b276af with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.72 testing commit ee809c7e08956d737cb66454f5b6ca32cc0d9f26 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.71 testing commit e7d2672c66e4d3675570369bf20856296da312c4 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in requeue_rx_msgs run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.70 testing commit 0fed55c248d98e70dd74f0942f64a139ba07f75d with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: KASAN: use-after-free Write in skb_queue_tail run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.69 testing commit 97ab07e11fbf55c86c3758e07ab295028bf17f94 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.68 testing commit def4c11b31312777a8db1f1083e0d4bc6c9bbef0 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.67 testing commit a5aa80588fcd5520ece36121c41b7d8e72245e33 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in requeue_rx_msgs run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.66 testing commit 893af1c79e42e53af0da22165b46eea135af0613 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in requeue_rx_msgs run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.65 testing commit cc4c818b2219c58af5f0ca59f3e9f02c48bc0b65 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.64 testing commit b3060a1a313ff7a545d658378f62fe9c250acdee with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.63 testing commit 9a9de33a9dfaaf6628d63c56d58ea5cbfe707739 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.62 testing commit 64f4694072aa4ac23eb9ad2feeb0a178d2a054da with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.61 testing commit 7250956f6eafc6edf2ad9a1cccaffb7f16c7b38d with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in requeue_rx_msgs run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.60 testing commit be9b6782a9eb128a45b4d4fce556f7053234773d with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.59 testing commit 3bd837bfe431839a378e9d421af05b2e22a6d329 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.58 testing commit 7a6bfa08b938d33ba0a2b80d4f717d4f0dbf9170 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in requeue_rx_msgs run #9: crashed: general protection fault in skb_unlink testing release v4.19.57 testing commit 1a05924366694d17a36e6b086d5bba1a8d74b977 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.56 testing commit aec3002d07fd2564cd32e56f126fa6db14a168bb with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.55 testing commit 78778071092e60ab947a0ac99c6bb59aad304526 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in requeue_rx_msgs run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in requeue_rx_msgs run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.54 testing commit 63bbbcd8ed53c404649e0b4248c1e5d42c41ac97 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in requeue_rx_msgs run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in requeue_rx_msgs run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.53 testing commit 9f31eb60d7a23536bf3902d4dc602f10c822b79e with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.52 testing commit 6500aa436df40a46998f7a56a32e8199a3513e6d with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.51 testing commit 7aa823a959e1f50c0dab9e01c1940235eccc04cc with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.50 testing commit 768292d053619b2725b846ed2bf556bf40f43de2 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.49 testing commit bb7b450e61a1dbe2bfbe998a1afeda654c6a67e9 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in requeue_rx_msgs run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.48 testing commit e109a984cf380b4b80418b7477c970bfeb428325 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.47 testing commit 0df021b2e841eded862ebc3b61532e7c73965535 with gcc (GCC) 8.1.0 all runs: crashed: BUG: corrupted list in proto_register testing release v4.19.46 testing commit 8b2fc005825583918be22b7bea6c155061e2f18d with gcc (GCC) 8.1.0 all runs: crashed: BUG: corrupted list in proto_register testing release v4.19.45 testing commit c3a0725977484ea2d7f17746d7e168d2b19f99a2 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in requeue_rx_msgs run #3: crashed: general protection fault in requeue_rx_msgs run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.44 testing commit dafc674bbcb11c6a5c63b75be5873b118e2add17 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.43 testing commit 3351e9d39947881910230a73be77e6f29ab8b72e with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.42 testing commit 9c2556f428cfdbf9a18f4452c510aba93d224c8b with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.41 testing commit 21de7eb67cff193e92a4556ae282a994e69b8499 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in requeue_rx_msgs run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.40 testing commit 1656b14572090df53ff096f158726c1d1355f5ca with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in requeue_rx_msgs run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.39 testing commit ad119c970bbe966222eaeb063138e430a78ee27f with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in requeue_rx_msgs testing release v4.19.38 testing commit a03957ab0fd5d7d03b512a72ab9106a1749f556e with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in requeue_rx_msgs run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in requeue_rx_msgs testing release v4.19.37 testing commit 19bb613acb9ad8e57593cad5118acaee117cc303 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in requeue_rx_msgs run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.36 testing commit c98875d930e915d01e8c40c7d3c16f00b3c8abe1 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in requeue_rx_msgs run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in requeue_rx_msgs run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.35 testing commit 4b0e041c9dada60197efc1697928cd32c2c70cd2 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.34 testing commit 4d552acf337038028f7e2f63a927afb7adf65fc1 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in requeue_rx_msgs run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.33 testing commit 4b3a3ab00fa7a951eb1d7568c71855e75fd5af85 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.32 testing commit 3a2156c839c75c24691e3c672a6d607b24b0c210 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.31 testing commit a2cddfe2ce6e9108341820fff8af46713685b2cb with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in requeue_rx_msgs run #9: crashed: general protection fault in skb_unlink testing release v4.19.30 testing commit 7794d352260604f02e7d446e632af2ca7fe8dda6 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: KASAN: use-after-free Read in requeue_rx_msgs run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in requeue_rx_msgs run #9: crashed: general protection fault in skb_unlink testing release v4.19.29 testing commit ce194fa2b267e2018f42442347d90df01c4071d6 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in requeue_rx_msgs run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.28 testing commit 6a31767f84ad31445865f1297d49937319f775c3 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.27 testing commit adc2a008ae56d240e8dae0b6b7807876d51f9fc2 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in requeue_rx_msgs testing release v4.19.26 testing commit 51ea85abe794450e24352b970c33ed12f0e13a4c with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.25 testing commit eb1e5b1a64ee6526a7cdb22357dcafc6ba643fbe with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in requeue_rx_msgs run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in requeue_rx_msgs run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.24 testing commit f287634fe3211277f078092bf57dc2b2a2e38dda with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in requeue_rx_msgs run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in requeue_rx_msgs run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.23 testing commit 67d52fae61c152a68924d94dcf0c569a96fa2f5d with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in requeue_rx_msgs run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.22 testing commit 6f8c14ee7b6f827aa6253fa24353fec7689506e5 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.21 testing commit 43d3d5141515dd201aa6d268e3c02fb7383769f6 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.20 testing commit 323e0195e63ff967a4fbdab7b17120f544ddc88f with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.19 testing commit dffbba4348e9686d6bf42d54eb0f2cd1c4fb3520 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in requeue_rx_msgs run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.18 testing commit 34ae657246154f095288059157e722ccf69f3b63 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in requeue_rx_msgs run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: KASAN: use-after-free Write in kcm_done testing release v4.19.17 testing commit 23b6b8bf9011dc714e7c66ada789c665261607ac with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.16 testing commit 9c5931b65a7b58ddeaf1530f1c4b515ba8640f8d with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.15 testing commit e3185123541204ca4f715eeaaa1f9929c09ff3b4 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in requeue_rx_msgs run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in requeue_rx_msgs run #9: crashed: general protection fault in requeue_rx_msgs testing release v4.19.14 testing commit f630d3cc771e845af8ab9ac7a68746596ea0ec7c with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in requeue_rx_msgs run #9: crashed: general protection fault in skb_unlink testing release v4.19.13 testing commit c04c050f5bf98845bfe22164b8a1503d696a6e26 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.12 testing commit 2a7cb228d29c3882c1414c10a44c5f3f59bfa44d with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.11 testing commit 2a5f80c5bd72487ddf35638c078c6a753894db87 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.10 testing commit b23de3254f8cd4166511dfd28a051358a80aa2fa with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.9 testing commit be53d23e68c29900da6b6ce486b5ab8507de94b1 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in requeue_rx_msgs testing release v4.19.8 testing commit 178574b66509c9ff7df4ad26c84a8884567e93b4 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in requeue_rx_msgs run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.7 testing commit 61c68f2a2af0f3dc531053524f980a7875e24e7d with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.6 testing commit 96db90800c06d3fe3fa08eb6222fe201286bb778 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in requeue_rx_msgs run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in requeue_rx_msgs run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.5 testing commit b32d16ec995683be888520d12d8f2833efee5dae with gcc (GCC) 8.1.0 run #0: crashed: KASAN: use-after-free Write in skb_queue_tail run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.4 testing commit 98a661ea85a8b46aa3e4bff1d900e289011e2d2a with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in requeue_rx_msgs run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.3 testing commit 73aa1c86c6ec67931abf0c6b96b6853578b07db5 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in requeue_rx_msgs run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.19.2 testing commit 7950eb316adf792283cac5743dfe5a11e74833dc with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19.1 testing commit 07a03b97b9ce2a6430344386eeab9b16283b893f with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in requeue_rx_msgs run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in requeue_rx_msgs run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in requeue_rx_msgs run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: KASAN: use-after-free Read in requeue_rx_msgs run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.13 testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in skb_unlink testing release v4.12 testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in requeue_rx_msgs run #9: crashed: general protection fault in skb_unlink testing release v4.11 testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0 all runs: crashed: general protection fault in skb_unlink testing release v4.10 testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0 all runs: crashed: general protection fault in skb_unlink testing release v4.9 testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in requeue_rx_msgs run #6: crashed: general protection fault in skb_unlink run #7: crashed: general protection fault in skb_unlink run #8: crashed: general protection fault in skb_unlink run #9: crashed: general protection fault in skb_unlink testing release v4.8 testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: OK run #7: OK run #8: OK run #9: OK testing release v4.7 testing commit 523d939ef98fd712632d93a5a2b588e477a7565e with gcc (GCC) 5.5.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: crashed: general protection fault in skb_unlink run #6: crashed: general protection fault in skb_unlink run #7: OK run #8: OK run #9: OK testing release v4.6 testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a with gcc (GCC) 5.5.0 run #0: crashed: general protection fault in skb_unlink run #1: crashed: general protection fault in skb_unlink run #2: crashed: general protection fault in skb_unlink run #3: crashed: general protection fault in skb_unlink run #4: crashed: general protection fault in skb_unlink run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK testing release v4.5 testing commit b562e44f507e863c6792946e4e1b1449fbbac85d with gcc (GCC) 5.5.0 all runs: OK # git bisect start 2dcd0af568b0cf583645c8a317dd12e344b1c72a b562e44f507e863c6792946e4e1b1449fbbac85d Bisecting: 8131 revisions left to test after this (roughly 13 steps) [6b5f04b6cf8ebab9a65d9c0026c650bb2538fd0f] Merge branch 'for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup testing commit 6b5f04b6cf8ebab9a65d9c0026c650bb2538fd0f with gcc (GCC) 5.5.0 all runs: OK # git bisect good 6b5f04b6cf8ebab9a65d9c0026c650bb2538fd0f Bisecting: 3735 revisions left to test after this (roughly 12 steps) [266c73b77706f2d05b4a3e70a5bb702ed35431d6] Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux testing commit 266c73b77706f2d05b4a3e70a5bb702ed35431d6 with gcc (GCC) 5.5.0 /syzkaller/jobs/linux/kernel/net/openvswitch/conntrack.c:540: undefined reference to `nf_nat_icmp_reply_translation' # git bisect skip 266c73b77706f2d05b4a3e70a5bb702ed35431d6 Bisecting: 3735 revisions left to test after this (roughly 12 steps) [4cd05a74cc604ef1cc6ac37a25629e185bcd2cc5] drm/amd/powerplay: notify amdgpu whether dpm is enabled or not. testing commit 4cd05a74cc604ef1cc6ac37a25629e185bcd2cc5 with gcc (GCC) 5.5.0 mm/kasan/kasan.c:501:3: error: too few arguments to function ‘set_track’ # git bisect skip 4cd05a74cc604ef1cc6ac37a25629e185bcd2cc5 Bisecting: 3735 revisions left to test after this (roughly 12 steps) [51c0e87e9a48d081d7ccb40d7454a0fa2935a424] powerpc/eeh: Cache normal BARs, not windows or IOV BARs testing commit 51c0e87e9a48d081d7ccb40d7454a0fa2935a424 with gcc (GCC) 5.5.0 run #0: crashed: possible deadlock in nf_conntrack_lock run #1: crashed: possible deadlock in nf_conntrack_lock run #2: crashed: possible deadlock in nf_conntrack_lock run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor344833068" "root@10.128.0.203:./syz-executor344833068"]: exit status 1 ssh: connect to host 10.128.0.203 port 22: Connection timed out lost connection run #4: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor221013403" "root@10.128.0.216:./syz-executor221013403"]: exit status 1 ssh: connect to host 10.128.0.216 port 22: Connection timed out lost connection run #5: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor967829054" "root@10.128.0.155:./syz-executor967829054"]: exit status 1 ssh: connect to host 10.128.0.155 port 22: Connection timed out lost connection run #6: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor156760709" "root@10.128.15.217:./syz-executor156760709"]: exit status 1 ssh: connect to host 10.128.15.217 port 22: Connection timed out lost connection run #7: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #8: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #9: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock # git bisect bad 51c0e87e9a48d081d7ccb40d7454a0fa2935a424 Bisecting: 35 revisions left to test after this (roughly 5 steps) [a9d4996df1f49dc7b45e55060436cace87f1e0d4] powerpc/mm/book3s-64: Move HPTE-related bits in PTE to upper end testing commit a9d4996df1f49dc7b45e55060436cace87f1e0d4 with gcc (GCC) 5.5.0 run #0: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor306158335" "root@10.128.1.52:./syz-executor306158335"]: exit status 1 ssh: connect to host 10.128.1.52 port 22: Connection timed out lost connection run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor296398418" "root@10.128.1.62:./syz-executor296398418"]: exit status 1 ssh: connect to host 10.128.1.62 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor697334153" "root@10.128.1.31:./syz-executor697334153"]: exit status 1 ssh: connect to host 10.128.1.31 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor348280660" "root@10.128.0.65:./syz-executor348280660"]: exit status 1 ssh: connect to host 10.128.0.65 port 22: Connection timed out lost connection run #4: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor287313059" "root@10.128.0.222:./syz-executor287313059"]: exit status 1 ssh: connect to host 10.128.0.222 port 22: Connection timed out lost connection run #5: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #6: crashed: INFO: rcu detected stall in cleanup_net run #7: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #8: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #9: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock # git bisect bad a9d4996df1f49dc7b45e55060436cace87f1e0d4 Bisecting: 17 revisions left to test after this (roughly 4 steps) [dc53617c4a3f6ca35641dfd4279720365ce9f4da] powerpc: atomic: Implement atomic{, 64}_*_return_* variants testing commit dc53617c4a3f6ca35641dfd4279720365ce9f4da with gcc (GCC) 5.5.0 run #0: crashed: possible deadlock in nf_conntrack_lock run #1: crashed: possible deadlock in nf_conntrack_lock run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor594111181" "root@10.128.10.26:./syz-executor594111181"]: exit status 1 ssh: connect to host 10.128.10.26 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor211056072" "root@10.128.1.49:./syz-executor211056072"]: exit status 1 ssh: connect to host 10.128.1.49 port 22: Connection timed out lost connection run #4: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor480708231" "root@10.128.10.38:./syz-executor480708231"]: exit status 1 ssh: connect to host 10.128.10.38 port 22: Connection timed out lost connection run #5: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #6: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #7: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #8: crashed: INFO: rcu detected stall in cleanup_net run #9: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock # git bisect bad dc53617c4a3f6ca35641dfd4279720365ce9f4da Bisecting: 8 revisions left to test after this (roughly 3 steps) [7fbe7a9374f8bb18db653f4693861c8625d01db1] powerpc/powernv: simplify the calculation of iov resource alignment testing commit 7fbe7a9374f8bb18db653f4693861c8625d01db1 with gcc (GCC) 5.5.0 run #0: crashed: possible deadlock in nf_conntrack_lock run #1: crashed: possible deadlock in nf_conntrack_lock run #2: crashed: possible deadlock in nf_conntrack_lock run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor137314385" "root@10.128.15.222:./syz-executor137314385"]: exit status 1 ssh: connect to host 10.128.15.222 port 22: Connection timed out lost connection run #4: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #5: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #6: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #7: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #8: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #9: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock # git bisect bad 7fbe7a9374f8bb18db653f4693861c8625d01db1 Bisecting: 4 revisions left to test after this (roughly 2 steps) [9b4fffa14906fce7aabf1f032ddd7efc7a031bba] powerpc/powernv: new function to access OPAL msglog testing commit 9b4fffa14906fce7aabf1f032ddd7efc7a031bba with gcc (GCC) 5.5.0 run #0: crashed: possible deadlock in nf_conntrack_lock run #1: crashed: possible deadlock in nf_conntrack_lock run #2: crashed: possible deadlock in nf_conntrack_lock run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor740168875" "root@10.128.15.199:./syz-executor740168875"]: exit status 1 ssh: connect to host 10.128.15.199 port 22: Connection timed out lost connection run #4: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor061836814" "root@10.128.1.0:./syz-executor061836814"]: exit status 1 ssh: connect to host 10.128.1.0 port 22: Connection timed out lost connection run #5: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor419512853" "root@10.128.15.211:./syz-executor419512853"]: exit status 1 ssh: connect to host 10.128.15.211 port 22: Connection timed out lost connection run #6: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor977658480" "root@10.128.15.210:./syz-executor977658480"]: exit status 1 ssh: connect to host 10.128.15.210 port 22: Connection timed out lost connection run #7: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #8: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #9: crashed: INFO: rcu detected stall in corrupted # git bisect bad 9b4fffa14906fce7aabf1f032ddd7efc7a031bba Bisecting: 1 revision left to test after this (roughly 1 step) [2e34057929cad8a90b775581216886d22b642e0a] powerpc/xmon: fix typo in usage message testing commit 2e34057929cad8a90b775581216886d22b642e0a with gcc (GCC) 5.5.0 run #0: crashed: possible deadlock in nf_conntrack_lock run #1: crashed: possible deadlock in nf_conntrack_lock run #2: crashed: possible deadlock in nf_conntrack_lock run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor669297442" "root@10.128.10.34:./syz-executor669297442"]: exit status 1 ssh: connect to host 10.128.10.34 port 22: Connection timed out lost connection run #4: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #5: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #6: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #7: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #8: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #9: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock # git bisect bad 2e34057929cad8a90b775581216886d22b642e0a Bisecting: 0 revisions left to test after this (roughly 0 steps) [2de50e9674fc4ca3c6174b04477f69eb26b4ee31] powerpc/powernv: Remove support for p5ioc2 testing commit 2de50e9674fc4ca3c6174b04477f69eb26b4ee31 with gcc (GCC) 5.5.0 run #0: crashed: possible deadlock in nf_conntrack_lock run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor613317284" "root@10.128.0.202:./syz-executor613317284"]: exit status 1 ssh: connect to host 10.128.0.202 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor973567411" "root@10.128.0.217:./syz-executor973567411"]: exit status 1 ssh: connect to host 10.128.0.217 port 22: Connection timed out lost connection run #3: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #4: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #5: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #6: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #7: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #8: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #9: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock # git bisect bad 2de50e9674fc4ca3c6174b04477f69eb26b4ee31 2de50e9674fc4ca3c6174b04477f69eb26b4ee31 is the first bad commit commit 2de50e9674fc4ca3c6174b04477f69eb26b4ee31 Author: Russell Currey Date: Mon Feb 8 15:08:20 2016 +1100 powerpc/powernv: Remove support for p5ioc2 "p5ioc2 is used by approximately 2 machines in the world, and has never ever been a supported configuration." The code for p5ioc2 is essentially unused and complicates what is already a very complicated codebase. Its removal is essentially a "free win" in the effort to simplify the powernv PCI code. In addition, support for p5ioc2 has been dropped from skiboot. There's no reason to keep it around in the kernel. Signed-off-by: Russell Currey Acked-by: Gavin Shan Acked-by: Stewart Smith Signed-off-by: Michael Ellerman arch/powerpc/platforms/powernv/Makefile | 2 +- arch/powerpc/platforms/powernv/pci-p5ioc2.c | 271 ---------------------------- arch/powerpc/platforms/powernv/pci.c | 17 +- arch/powerpc/platforms/powernv/pci.h | 152 ++++++++-------- 4 files changed, 74 insertions(+), 368 deletions(-) delete mode 100644 arch/powerpc/platforms/powernv/pci-p5ioc2.c revisions tested: 110, total time: 21h27m3.34130795s (build: 14h26m9.421028122s, test: 6h34m34.31669097s) first bad commit: 2de50e9674fc4ca3c6174b04477f69eb26b4ee31 powerpc/powernv: Remove support for p5ioc2 cc: ["gwshan@linux.vnet.ibm.com" "mpe@ellerman.id.au" "ruscur@russell.cc" "stewart@linux.vnet.ibm.com"] crash: BUG: spinlock lockup suspected in nf_conntrack_lock IPv6: ADDRCONF(NETDEV_CHANGE): nr2: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): nr4: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): nr3: link becomes ready BUG: spinlock lockup suspected on CPU#1, kworker/u4:4/2177 lock: nf_conntrack_locks+0x0/0xe000, .magic: dead4ead, .owner: kworker/u4:4/2177, .owner_cpu: 1 CPU: 1 PID: 2177 Comm: kworker/u4:4 Not tainted 4.5.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net 0000000000000000 ffff8800ba9b3c18 ffffffff81882ab0 ffff88012aa24280 ffffffff8300a780 ffff8800ba9b3c38 ffffffff811c4953 ffffffff8300a780 0000000089173700 ffff8800ba9b3c68 ffffffff811c4a83 ffffffff8300a780 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0x99/0xd9 lib/dump_stack.c:51 [] spin_dump+0x73/0xc0 kernel/locking/spinlock_debug.c:67 [] __spin_lock_debug kernel/locking/spinlock_debug.c:117 [inline] [] do_raw_spin_lock+0xa3/0x160 kernel/locking/spinlock_debug.c:137 [] __raw_spin_lock include/linux/spinlock_api_smp.h:145 [inline] [] _raw_spin_lock+0x3e/0x50 kernel/locking/spinlock.c:151 [] spin_lock include/linux/spinlock.h:302 [inline] [] nf_conntrack_lock+0xd/0x50 net/netfilter/nf_conntrack_core.c:74 [] ctnl_untimeout.isra.4+0xdc/0x110 net/netfilter/nfnetlink_cttimeout.c:315 [] cttimeout_net_exit+0x28/0x80 net/netfilter/nfnetlink_cttimeout.c:581 [] ops_exit_list.isra.4+0x33/0x60 net/core/net_namespace.c:134 [] cleanup_net+0x1a9/0x270 net/core/net_namespace.c:431 [] process_one_work+0x21b/0x690 kernel/workqueue.c:2036 [] worker_thread+0x49/0x490 kernel/workqueue.c:2170 [] kthread+0xea/0x100 drivers/block/aoe/aoecmd.c:1312 [] ret_from_fork+0x3f/0x70 arch/x86/entry/entry_64.S:468 Sending NMI to all CPUs: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.5.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffffffff83021540 ti: ffffffff83000000 task.ti: ffffffff83000000 RIP: 0010:[] [] native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:50 RSP: 0018:ffffffff83003eb8 EFLAGS: 00000282 RAX: 0000000000000000 RBX: ffffffff83000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff82d21536 RDI: ffffffff81089bf6 RBP: ffffffff83003eb8 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff83004000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff83000000 FS: 0000000000000000(0000) GS:ffff88012c000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c4200bdff8 CR3: 00000000b1261000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff83003ed8 ffffffff81089c09 ffffffff83000000 ffffffff83004000 ffffffff83003ee8 ffffffff8108a61a ffffffff83003ef8 ffffffff811b8145 ffffffff83003f40 ffffffff811b853f ffffffff8336a2e0 ffffffff83004000 Call Trace: [] arch_safe_halt arch/x86/include/asm/paravirt.h:117 [inline] [] default_idle+0x29/0x190 arch/x86/kernel/process.c:304 [] arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:295 [] default_idle_call+0x25/0x50 kernel/sched/idle.c:92 [] cpuidle_idle_call kernel/sched/idle.c:150 [inline] [] cpu_idle_loop kernel/sched/idle.c:246 [inline] [] cpu_startup_entry+0x3cf/0x460 kernel/sched/idle.c:294 [] rest_init+0x131/0x140 init/main.c:412 [] start_kernel+0x44a/0x457 init/main.c:683 [] x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:203 [] x86_64_start_kernel+0x145/0x152 arch/x86/kernel/head64.c:184 Code: 00 00 00 00 00 55 48 89 e5 fa 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb f4 <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 f4 5d c3 66 0f 1f 84 NMI backtrace for cpu 1 CPU: 1 PID: 2177 Comm: kworker/u4:4 Not tainted 4.5.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net task: ffff88012aa24280 ti: ffff8800ba9b0000 task.ti: ffff8800ba9b0000 RIP: 0010:[] [] native_write_msr_safe+0x6/0x40 arch/x86/include/asm/msr.h:132 RSP: 0018:ffff8800ba9b3b68 EFLAGS: 00000086 RAX: 0000000000000400 RBX: ffffffff8324cec0 RCX: 0000000000000830 RDX: 0000000000000001 RSI: 0000000000000400 RDI: 0000000000000830 RBP: ffff8800ba9b3b70 R08: 0000000000000400 R09: 0000000000000003 R10: ffff88012aa24b30 R11: 0000000000000001 R12: 0000000000080000 R13: 0000000000000001 R14: 0000000000000002 R15: 000000000000a130 FS: 0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000021cfe20 CR3: 00000000b1261000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff810c261a ffff8800ba9b3bb8 ffffffff810c2701 0000000000000282 0000000000000001 00000000000114e0 0000000000000001 ffffffff810bf280 0000000000000040 0000000000000001 ffff8800ba9b3bc8 ffffffff810c27ce Call Trace: [] __x2apic_send_IPI_mask+0xe1/0x150 arch/x86/kernel/apic/x2apic_phys.c:62 [] x2apic_send_IPI_mask+0xe/0x10 arch/x86/kernel/apic/x2apic_cluster.c:87 [] nmi_raise_cpu_backtrace+0x16/0x20 arch/x86/kernel/apic/hw_nmi.c:33 [] nmi_trigger_all_cpu_backtrace+0x322/0x330 lib/nmi_backtrace.c:85 [] arch_trigger_all_cpu_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 [] trigger_all_cpu_backtrace include/linux/nmi.h:41 [inline] [] __spin_lock_debug kernel/locking/spinlock_debug.c:119 [inline] [] do_raw_spin_lock+0xad/0x160 kernel/locking/spinlock_debug.c:137 [] __raw_spin_lock include/linux/spinlock_api_smp.h:145 [inline] [] _raw_spin_lock+0x3e/0x50 kernel/locking/spinlock.c:151 [] spin_lock include/linux/spinlock.h:302 [inline] [] nf_conntrack_lock+0xd/0x50 net/netfilter/nf_conntrack_core.c:74 [] ctnl_untimeout.isra.4+0xdc/0x110 net/netfilter/nfnetlink_cttimeout.c:315 [] cttimeout_net_exit+0x28/0x80 net/netfilter/nfnetlink_cttimeout.c:581 [] ops_exit_list.isra.4+0x33/0x60 net/core/net_namespace.c:134 [] cleanup_net+0x1a9/0x270 net/core/net_namespace.c:431 [] process_one_work+0x21b/0x690 kernel/workqueue.c:2036 [] worker_thread+0x49/0x490 kernel/workqueue.c:2170 [] kthread+0xea/0x100 drivers/block/aoe/aoecmd.c:1312 [] ret_from_fork+0x3f/0x70 arch/x86/entry/entry_64.S:468 Code: 5b 5d c3 48 c1 e2 20 48 89 d3 31 d2 48 09 c3 48 89 de e8 8e 4e 7f 00 48 89 d8 5b 5d c3 0f 1f 84 00 00 00 00 00 89 f0 89 f9 0f 30 <31> c0 0f 1f 44 00 00 c3 41 89 f0 48 89 d6 55 89 c2 48 c1 e6 20 INFO: rcu_preempt self-detected stall on CPU 1-...: (10451 ticks this GP) idle=40d/140000000000001/0 softirq=6615/6615 fqs=10444 (t=10500 jiffies g=371 c=370 q=925) Task dump for CPU 1: kworker/u4:4 R running task 12640 2177 2 0x00000008 Workqueue: netns cleanup_net ffff88012aa24280 ffff88012c103da0 ffffffff811a0063 0000000000000001 ffffffff83072b80 0000000000000086 ffff88012c103db8 ffffffff811a2e42 0000000000000002 ffff88012c103de8 ffffffff811dc909 ffff88012c117dc0 Call Trace: [] sched_show_task+0xe3/0x180 kernel/sched/core.c:5036 [] dump_cpu_task+0x32/0x40 kernel/sched/core.c:8717 [] rcu_dump_cpu_stacks+0x89/0xe0 kernel/rcu/tree.c:1247 [] print_cpu_stall kernel/rcu/tree.c:1354 [inline] [] check_cpu_stall kernel/rcu/tree.c:1418 [inline] [] __rcu_pending kernel/rcu/tree.c:3906 [inline] [] rcu_pending kernel/rcu/tree.c:3970 [inline] [] rcu_check_callbacks+0x66d/0xa30 kernel/rcu/tree.c:2795 [] update_process_times+0x34/0x60 kernel/time/timer.c:1420 [] tick_sched_handle.isra.20+0x20/0x60 kernel/time/tick-sched.c:152 [] tick_sched_timer+0x38/0x70 kernel/time/tick-sched.c:1088 [] __run_hrtimer kernel/time/hrtimer.c:1248 [inline] [] __hrtimer_run_queues+0x11d/0x4a0 kernel/time/hrtimer.c:1312 [] hrtimer_interrupt+0xaa/0x1b0 kernel/time/hrtimer.c:1346 [] local_apic_timer_interrupt+0x31/0x50 arch/x86/kernel/apic/apic.c:907 [] smp_apic_timer_interrupt+0x38/0x50 arch/x86/kernel/apic/apic.c:931 [] apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:687 [] ? kvm_wait+0xbb/0xe0 arch/x86/kernel/kvm.c:612 [] arch_safe_halt arch/x86/include/asm/paravirt.h:117 [inline] [] kvm_wait+0xca/0xe0 arch/x86/kernel/kvm.c:612 [] pv_wait arch/x86/include/asm/paravirt.h:680 [inline] [] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:449 [inline] [] __pv_queued_spin_lock_slowpath+0x26a/0x2d0 kernel/locking/qspinlock.c:446 [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:670 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:84 [inline] [] __spin_lock_debug kernel/locking/spinlock_debug.c:130 [inline] [] do_raw_spin_lock+0x157/0x160 kernel/locking/spinlock_debug.c:137 [] __raw_spin_lock include/linux/spinlock_api_smp.h:145 [inline] [] _raw_spin_lock+0x3e/0x50 kernel/locking/spinlock.c:151 [] spin_lock include/linux/spinlock.h:302 [inline] [] nf_conntrack_lock+0xd/0x50 net/netfilter/nf_conntrack_core.c:74 [] ctnl_untimeout.isra.4+0xdc/0x110 net/netfilter/nfnetlink_cttimeout.c:315 [] cttimeout_net_exit+0x28/0x80 net/netfilter/nfnetlink_cttimeout.c:581 [] ops_exit_list.isra.4+0x33/0x60 net/core/net_namespace.c:134 [] cleanup_net+0x1a9/0x270 net/core/net_namespace.c:431 [] process_one_work+0x21b/0x690 kernel/workqueue.c:2036 [] worker_thread+0x49/0x490 kernel/workqueue.c:2170 [] kthread+0xea/0x100 drivers/block/aoe/aoecmd.c:1312 [] ret_from_fork+0x3f/0x70 arch/x86/entry/entry_64.S:468