bisecting cause commit starting from be978f8feb1d4678b941a3ccf181eea1039110e2 building syzkaller on f90ec89960664f503e0811d8b67c56bb1128d47d testing commit be978f8feb1d4678b941a3ccf181eea1039110e2 with gcc (GCC) 8.1.0 kernel signature: b571127fc9ae666b88b12320169f3a2fcdfbdccf0a37efc169a40b1e548d1f85 run #0: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup run #1: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup run #2: crashed: INFO: rcu detected stall in ipv6_rcv run #3: OK run #4: OK run #5: OK run #6: crashed: general protection fault in __xfrm6_tunnel_spi_lookup run #7: OK run #8: OK run #9: OK testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.1.0 kernel signature: 6079f80ee22f6bc3dd15f9be382246356ebc89a2d49754b43bfea8ce9d2f1ca2 all runs: OK # git bisect start be978f8feb1d4678b941a3ccf181eea1039110e2 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 Bisecting: 11903 revisions left to test after this (roughly 14 steps) [80ef846e9909f22ccdc2a4a6d931266cecce8b2c] Merge tag 'staging-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging testing commit 80ef846e9909f22ccdc2a4a6d931266cecce8b2c with gcc (GCC) 8.1.0 kernel signature: 0b8caf4e06d28c804d1445ce2cf8606da6711670827cb22678601846416eb28c all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip 80ef846e9909f22ccdc2a4a6d931266cecce8b2c Bisecting: 11903 revisions left to test after this (roughly 14 steps) [b97120b15ebd3de51325084136d3b9c3cce656d6] nvme-pci: use simple suspend when a HMB is enabled testing commit b97120b15ebd3de51325084136d3b9c3cce656d6 with gcc (GCC) 8.1.0 kernel signature: 6b3063782dc894a492d52d1c393f26ee955e42f932333e3db88547b2929c3216 all runs: OK # git bisect good b97120b15ebd3de51325084136d3b9c3cce656d6 Bisecting: 10248 revisions left to test after this (roughly 13 steps) [6f51ab9440d131ae424cce27e3170746219f5142] Merge tag 'mtd/for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux testing commit 6f51ab9440d131ae424cce27e3170746219f5142 with gcc (GCC) 8.1.0 kernel signature: ea56c399fa0147a7cffc22061cda633a3075f9d9ff6df2500c027e6ff67bad9c all runs: basic kernel testing failed: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks # git bisect skip 6f51ab9440d131ae424cce27e3170746219f5142 Bisecting: 10248 revisions left to test after this (roughly 13 steps) [7b411871220af35722360cd1d1111c7fadfc29fe] misc: pch_phub: Remove superfluous descriptions to non-existent args 'offset_address' testing commit 7b411871220af35722360cd1d1111c7fadfc29fe with gcc (GCC) 8.1.0 kernel signature: ff5a18f25583d139d04f57d44c9404a2b00b8deec941e38cedda6e009cb26e0c all runs: OK # git bisect good 7b411871220af35722360cd1d1111c7fadfc29fe Bisecting: 4244 revisions left to test after this (roughly 12 steps) [ae5e4d2e6d7bec8a063fd8608fba00fb8c273896] Merge remote-tracking branch 'crypto/master' testing commit ae5e4d2e6d7bec8a063fd8608fba00fb8c273896 with gcc (GCC) 8.1.0 kernel signature: 3817e229674d4fa891ed46e698413a7bf41fc87ec48d393278408d7dc771aa7c run #0: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup run #1: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup 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 bad ae5e4d2e6d7bec8a063fd8608fba00fb8c273896 Bisecting: 1898 revisions left to test after this (roughly 11 steps) [05f24e945ebfaf1ccec7dc0cf6e664250b8d9df1] Merge remote-tracking branch 'printk/for-next' testing commit 05f24e945ebfaf1ccec7dc0cf6e664250b8d9df1 with gcc (GCC) 8.1.0 kernel signature: 8d99c3fd9cfff47190d14eea6bd29f377afdf4f7454cc77782558b7938eedb11 run #0: OK 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: boot failed: can't ssh into the instance # git bisect good 05f24e945ebfaf1ccec7dc0cf6e664250b8d9df1 Bisecting: 1058 revisions left to test after this (roughly 10 steps) [94339443686b36d3223bc032b7947267474e2679] net: bridge: notify on vlan tunnel changes done via the old api testing commit 94339443686b36d3223bc032b7947267474e2679 with gcc (GCC) 8.1.0 kernel signature: e8af0d7ab85508b7080c497a40c8b1b1c41e65324448578c3894ff3dfcf68eb3 run #0: OK 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: boot failed: can't ssh into the instance # git bisect good 94339443686b36d3223bc032b7947267474e2679 Bisecting: 543 revisions left to test after this (roughly 9 steps) [ccc6fde76206ba9ab5e2a0d4ff2af5969c61997e] Merge remote-tracking branch 'jc_docs/docs-next' testing commit ccc6fde76206ba9ab5e2a0d4ff2af5969c61997e with gcc (GCC) 8.1.0 kernel signature: 41c6ffeea85598e22bb0d229538cc8f6d2c076acd5a8dbf416377ff14f294fb2 run #0: OK 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: boot failed: can't ssh into the instance # git bisect good ccc6fde76206ba9ab5e2a0d4ff2af5969c61997e Bisecting: 279 revisions left to test after this (roughly 8 steps) [a139dad6afb9d4b349711977ff0893c15534f748] Merge remote-tracking branch 'net-next/master' testing commit a139dad6afb9d4b349711977ff0893c15534f748 with gcc (GCC) 8.1.0 kernel signature: f62000a8c26c4573014ac2a149ece61bb05e53620259f46cae18a16333eab4a6 all runs: OK # git bisect good a139dad6afb9d4b349711977ff0893c15534f748 Bisecting: 140 revisions left to test after this (roughly 7 steps) [941f8901f5329eb8111fd58d140e3bb5d8f89a75] Merge remote-tracking branch 'mtd/mtd/next' testing commit 941f8901f5329eb8111fd58d140e3bb5d8f89a75 with gcc (GCC) 8.1.0 kernel signature: 526c87878942ea51fbb00c6cf753cb845cc977cca1f647f749701f5e43270555 run #0: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup run #1: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in __xfrm6_tunnel_spi_lookup run #8: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup run #9: boot failed: can't ssh into the instance # git bisect bad 941f8901f5329eb8111fd58d140e3bb5d8f89a75 Bisecting: 73 revisions left to test after this (roughly 6 steps) [a2ee1d248468145c06c162c3369ed8fda07736cb] Merge remote-tracking branch 'wireless-drivers-next/master' testing commit a2ee1d248468145c06c162c3369ed8fda07736cb with gcc (GCC) 8.1.0 kernel signature: 326e301f3496ec5e1ba542e0dd463796191b16164e3e58f1c6cbbbab6dd026e5 run #0: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup run #1: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in __xfrm6_tunnel_spi_lookup run #3: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup run #4: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup run #5: OK run #6: OK run #7: OK run #8: OK run #9: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup # git bisect bad a2ee1d248468145c06c162c3369ed8fda07736cb Bisecting: 30 revisions left to test after this (roughly 5 steps) [bdf0acad6dce2758117ae9c00d3bb566c2435c9b] Merge remote-tracking branch 'ipsec-next/master' testing commit bdf0acad6dce2758117ae9c00d3bb566c2435c9b with gcc (GCC) 8.1.0 kernel signature: 0a32f7324ec180b20d335fa46c217f33d4c7aafd0fed5b7b31018d574b0095e1 run #0: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup run #1: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup run #2: crashed: general protection fault in __xfrm6_tunnel_spi_lookup run #3: crashed: BUG: unable to handle kernel paging request in __xfrm6_tunnel_spi_lookup run #4: crashed: INFO: rcu detected stall in ipv6_rcv run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad bdf0acad6dce2758117ae9c00d3bb566c2435c9b Bisecting: 16 revisions left to test after this (roughly 4 steps) [6984cbc6dfa280687367b9660d8c830518239851] selftests/bpf: Switch perf_buffer test to tracepoint and skeleton testing commit 6984cbc6dfa280687367b9660d8c830518239851 with gcc (GCC) 8.1.0 kernel signature: 0346a0b34cc2e702e3d4f3e9f048728e61e172d4aba9f7a0e84c3604c94b33f9 all runs: OK # git bisect good 6984cbc6dfa280687367b9660d8c830518239851 Bisecting: 8 revisions left to test after this (roughly 3 steps) [2ab110cbb0c0cb05c64f37f42b78f5bc11699b0e] ip6_vti: support IP6IP tunnel processing testing commit 2ab110cbb0c0cb05c64f37f42b78f5bc11699b0e with gcc (GCC) 8.1.0 kernel signature: b034f80e099ecd868bb0f6c43dcad6c36cbb9dff4c0847f82581305982a71a45 all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call # git bisect skip 2ab110cbb0c0cb05c64f37f42b78f5bc11699b0e Bisecting: 8 revisions left to test after this (roughly 3 steps) [08622869ed3f167db9b2250ab1bb055f55293401] ip6_vti: support IP6IP6 tunnel processing with .cb_handler testing commit 08622869ed3f167db9b2250ab1bb055f55293401 with gcc (GCC) 8.1.0 kernel signature: abd4643b2c294311d99f35f8514571ce67c3e2551fb548fd018627ba886ecd60 all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call # git bisect skip 08622869ed3f167db9b2250ab1bb055f55293401 Bisecting: 8 revisions left to test after this (roughly 3 steps) [6df2db5d37ba3df8c80d90c15f1e20480be43f75] tunnel4: add cb_handler to struct xfrm_tunnel testing commit 6df2db5d37ba3df8c80d90c15f1e20480be43f75 with gcc (GCC) 8.1.0 kernel signature: 40916f9b720a6e8172fa41ff758d2c6fa261d9a21fa89b176c2b65cc50292251 all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call # git bisect skip 6df2db5d37ba3df8c80d90c15f1e20480be43f75 Bisecting: 8 revisions left to test after this (roughly 3 steps) [d5a7a5057387d79b91a6e2fd78a76ccd53f91e6c] ipcomp: assign if_id to child tunnel from parent tunnel testing commit d5a7a5057387d79b91a6e2fd78a76ccd53f91e6c with gcc (GCC) 8.1.0 kernel signature: 32d71db3411e6607fd16343cdab00f69acc26bfae9056c097d46e2dff604d2f0 all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call # git bisect skip d5a7a5057387d79b91a6e2fd78a76ccd53f91e6c Bisecting: 8 revisions left to test after this (roughly 3 steps) [bfdd0897dc3036be5b1ec41fad6abd2498002217] Merge remote-tracking branch 'bpf-next/master' testing commit bfdd0897dc3036be5b1ec41fad6abd2498002217 with gcc (GCC) 8.1.0 kernel signature: 3b862f4a4908fa6ba25f4ee1635b20ee967a5bf1ad5d08fa2d804fa17bbb9a6c all runs: OK # git bisect good bfdd0897dc3036be5b1ec41fad6abd2498002217 Bisecting: 5 revisions left to test after this (roughly 3 steps) [d7b360c2869f9ce2418510d14baf0f9696fcf1e9] xfrm: interface: support IP6IP6 and IP6IP tunnels processing with .cb_handler testing commit d7b360c2869f9ce2418510d14baf0f9696fcf1e9 with gcc (GCC) 8.1.0 kernel signature: 45c7eb4f90be2e92cf5ba6f36bf2653239262db44478f189e9140041b01d42bd all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call # git bisect skip d7b360c2869f9ce2418510d14baf0f9696fcf1e9 Bisecting: 5 revisions left to test after this (roughly 3 steps) [e6ce64570f2451684b4f9bcbaee6c40c4a7dff82] ip_vti: support IPIP6 tunnel processing testing commit e6ce64570f2451684b4f9bcbaee6c40c4a7dff82 with gcc (GCC) 8.1.0 kernel signature: b43f814031ca5233deb24f7012bfe549a131a7f7d75b6b709707e3d3fbdf8c97 all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call # git bisect skip e6ce64570f2451684b4f9bcbaee6c40c4a7dff82 Bisecting: 5 revisions left to test after this (roughly 3 steps) [da9bbf0598c9e66b8a46ceabaa6172596795acf2] xfrm: interface: support IPIP and IPIP6 tunnels processing with .cb_handler testing commit da9bbf0598c9e66b8a46ceabaa6172596795acf2 with gcc (GCC) 8.1.0 kernel signature: 5181cd6a70addead7a00e6886cb42315169f0e71ad9e1cd8a9000f5fc877b892 all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call # git bisect skip da9bbf0598c9e66b8a46ceabaa6172596795acf2 Bisecting: 5 revisions left to test after this (roughly 3 steps) [87e66b9682d7067eb7db08040dae36b608a4d971] ip_vti: support IPIP tunnel processing with .cb_handler testing commit 87e66b9682d7067eb7db08040dae36b608a4d971 with gcc (GCC) 8.1.0 kernel signature: dc71e4cfb926e3b7ea204037d8b706cc80911e5b0bac9287059b0d3ce69a34a9 all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call # git bisect skip 87e66b9682d7067eb7db08040dae36b608a4d971 Bisecting: 5 revisions left to test after this (roughly 3 steps) [1475ee0ac9a16dd5df23ca8abe1039eb6086eb66] xfrm: add is_ipip to struct xfrm_input_afinfo testing commit 1475ee0ac9a16dd5df23ca8abe1039eb6086eb66 with gcc (GCC) 8.1.0 kernel signature: 98f763c082401520a32a1be8416b98df2ca0f2e96689d1abfed47880d45f30ac all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call # git bisect skip 1475ee0ac9a16dd5df23ca8abe1039eb6086eb66 Bisecting: 5 revisions left to test after this (roughly 3 steps) [86afc7031826147407e96412668d343e0f1bd6fd] tunnel6: add tunnel6_input_afinfo for ipip and ipv6 tunnels testing commit 86afc7031826147407e96412668d343e0f1bd6fd with gcc (GCC) 8.1.0 kernel signature: 0c72feb2dfb7f2667facb3da995eca6db2d8b1737cf31b6f2b4c8ef6c0e5899e all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call # git bisect skip 86afc7031826147407e96412668d343e0f1bd6fd Bisecting: 5 revisions left to test after this (roughly 3 steps) [2d4c7986dbc6f78043df7b946b36996fca8c046f] Merge remote-tracking branch 'origin/testing' testing commit 2d4c7986dbc6f78043df7b946b36996fca8c046f with gcc (GCC) 8.1.0 kernel signature: d6b56f42c14962a7bf2b98f4e46bcad0ada085ad851e369156b0898f38574ee3 all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call # git bisect skip 2d4c7986dbc6f78043df7b946b36996fca8c046f Bisecting: 5 revisions left to test after this (roughly 3 steps) [428d2459cceb77357b81c242ca22462a6a904817] xfrm: introduce oseq-may-wrap flag testing commit 428d2459cceb77357b81c242ca22462a6a904817 with gcc (GCC) 8.1.0 kernel signature: 02509eb13ea2452d8936935e3cff38734ad651f473755479e3acf8b0563329b1 all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call # git bisect skip 428d2459cceb77357b81c242ca22462a6a904817 There are only 'skip'ped commits left to test. The first bad commit could be any of: 08622869ed3f167db9b2250ab1bb055f55293401 e6ce64570f2451684b4f9bcbaee6c40c4a7dff82 2ab110cbb0c0cb05c64f37f42b78f5bc11699b0e 87e66b9682d7067eb7db08040dae36b608a4d971 86afc7031826147407e96412668d343e0f1bd6fd d5a7a5057387d79b91a6e2fd78a76ccd53f91e6c 6df2db5d37ba3df8c80d90c15f1e20480be43f75 d7b360c2869f9ce2418510d14baf0f9696fcf1e9 1475ee0ac9a16dd5df23ca8abe1039eb6086eb66 da9bbf0598c9e66b8a46ceabaa6172596795acf2 2d4c7986dbc6f78043df7b946b36996fca8c046f 428d2459cceb77357b81c242ca22462a6a904817 bdf0acad6dce2758117ae9c00d3bb566c2435c9b We cannot bisect more! revisions tested: 28, total time: 5h53m8.298751972s (build: 2h45m7.046169748s, test: 3h4m7.407017376s) bisection is inconclusive, the first bad commit could be any of: 08622869ed3f167db9b2250ab1bb055f55293401 e6ce64570f2451684b4f9bcbaee6c40c4a7dff82 2ab110cbb0c0cb05c64f37f42b78f5bc11699b0e 87e66b9682d7067eb7db08040dae36b608a4d971 86afc7031826147407e96412668d343e0f1bd6fd d5a7a5057387d79b91a6e2fd78a76ccd53f91e6c 6df2db5d37ba3df8c80d90c15f1e20480be43f75 d7b360c2869f9ce2418510d14baf0f9696fcf1e9 1475ee0ac9a16dd5df23ca8abe1039eb6086eb66 da9bbf0598c9e66b8a46ceabaa6172596795acf2 2d4c7986dbc6f78043df7b946b36996fca8c046f 428d2459cceb77357b81c242ca22462a6a904817 bdf0acad6dce2758117ae9c00d3bb566c2435c9b