bisecting cause commit starting from f26c3abc432a2026ba9ee7767061a1f88aead6ec building syzkaller on a2fe1cb58994e43fb14f141ecd6e6dcce9bb697a testing commit f26c3abc432a2026ba9ee7767061a1f88aead6ec compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 38b98e3c8b62d33ff16ff7b79f2832daa0f50ed143c4ac252ae3d01b626915ee all runs: crashed: KASAN: use-after-free Read in tctx_task_work testing release v5.13 testing commit 62fb9874f5da54fdb243003b386128037319b219 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 1cb5111c0f95c1fc7e3896d55db5b53fbce5858f143c657e735c92f7019c7d10 run #0: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #1: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #2: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #3: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #4: crashed: BUG: sleeping function called from invalid context in lock_sock_nested 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" "/tmp/syz-executor645287756" "root@10.128.1.112:./syz-executor645287756"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.1.112 port 22 timed out lost connection run #6: OK run #7: OK run #8: OK run #9: OK testing release v5.12 testing commit 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: f49397d19055b9442e2c2b720108afe8474cea2e340222187afff379ccf6ade1 all runs: OK # git bisect start 62fb9874f5da54fdb243003b386128037319b219 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 Bisecting: 8739 revisions left to test after this (roughly 13 steps) [85f3f17b5db2dd9f8a094a0ddc665555135afd22] Merge branch 'md-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md into block-5.13 testing commit 85f3f17b5db2dd9f8a094a0ddc665555135afd22 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 714cf9b6fe7a618558f7d423d77c11e1f7356ff667a019d2f409379192a0b248 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" "/tmp/syz-executor582340764" "root@10.128.0.41:./syz-executor582340764"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.0.41 port 22 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" "/tmp/syz-executor537360309" "root@10.128.1.126:./syz-executor537360309"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.1.126 port 22 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" "/tmp/syz-executor642047888" "root@10.128.1.127:./syz-executor642047888"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.1.127 port 22 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" "/tmp/syz-executor781816239" "root@10.128.10.2:./syz-executor781816239"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.10.2 port 22 timed out lost connection run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good 85f3f17b5db2dd9f8a094a0ddc665555135afd22 Bisecting: 4369 revisions left to test after this (roughly 12 steps) [23243c1ace9fb4eae2f75e0fe0ece8e3219fb4f3] arch: use cross_compiling to check whether it is a cross build or not testing commit 23243c1ace9fb4eae2f75e0fe0ece8e3219fb4f3 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 06324180c222f3c3c3d0179e247adfbd7c9f04a301d65f49e666b2548447f474 run #0: basic kernel testing failed: WARNING in __nf_unregister_net_hook run #1: basic kernel testing failed: WARNING in __nf_unregister_net_hook run #2: basic kernel testing failed: WARNING in __nf_unregister_net_hook run #3: basic kernel testing failed: WARNING in __nf_unregister_net_hook run #4: basic kernel testing failed: WARNING in __nf_unregister_net_hook run #5: crashed: WARNING in __nf_unregister_net_hook run #6: basic kernel testing failed: WARNING in __nf_unregister_net_hook run #7: basic kernel testing failed: WARNING in __nf_unregister_net_hook run #8: basic kernel testing failed: WARNING in __nf_unregister_net_hook run #9: crashed: WARNING in __nf_unregister_net_hook # git bisect bad 23243c1ace9fb4eae2f75e0fe0ece8e3219fb4f3 Bisecting: 2187 revisions left to test after this (roughly 11 steps) [aeacb52a8de7046be5399ba311f49bce96e1b269] net/mlx5: DR, Add support for isolate_vl_tc QP testing commit aeacb52a8de7046be5399ba311f49bce96e1b269 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 7da6112acd429552067091d6fc3aa9f237ff0c5ae78a231523084fb8182400dd 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.52:./syz-fuzzer"]: 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: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.115:./syz-fuzzer"] run #2: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.123:./syz-fuzzer"] Warning: Permanently added '10.128.1.123' (ECDSA) to the list of known hosts. run #3: boot failed: KASAN: use-after-free Read in page_to_skb run #4: boot failed: KASAN: use-after-free Read in page_to_skb run #5: boot failed: KASAN: use-after-free Read in page_to_skb run #6: boot failed: KASAN: slab-out-of-bounds Read in page_to_skb run #7: boot failed: KASAN: use-after-free Read in page_to_skb run #8: boot failed: KASAN: use-after-free Read in page_to_skb run #9: boot failed: KASAN: use-after-free Read in page_to_skb # git bisect skip aeacb52a8de7046be5399ba311f49bce96e1b269 Bisecting: 2187 revisions left to test after this (roughly 11 steps) [e7d48e5fbf30f85c89d83683c3d2dbdaa8884103] net: enetc: add a mini driver for the Integrated Endpoint Register Block testing commit e7d48e5fbf30f85c89d83683c3d2dbdaa8884103 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: e5f084945ae841ae3027105c720634b6a9d9acbcee60b0fb916db05ed4e948b8 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.19:./syz-fuzzer"]: exit status 1 ssh: connect to host 10.128.1.19 port 22: Connection timed out lost connection run #1: boot failed: KASAN: slab-out-of-bounds Read in page_to_skb run #2: boot failed: KASAN: use-after-free Read in page_to_skb run #3: boot failed: KASAN: slab-out-of-bounds Read in page_to_skb run #4: boot failed: KASAN: slab-out-of-bounds Read in page_to_skb run #5: boot failed: KASAN: slab-out-of-bounds Read in page_to_skb run #6: boot failed: KASAN: slab-out-of-bounds Read in page_to_skb run #7: boot failed: KASAN: slab-out-of-bounds Read in page_to_skb run #8: boot failed: KASAN: use-after-free Read in page_to_skb run #9: boot failed: KASAN: slab-out-of-bounds Read in page_to_skb # git bisect skip e7d48e5fbf30f85c89d83683c3d2dbdaa8884103 Bisecting: 2187 revisions left to test after this (roughly 11 steps) [5b7c0c32c90494f5aaf13f417cff5dc204575597] net: ocelot: Simplify MRP deletion testing commit 5b7c0c32c90494f5aaf13f417cff5dc204575597 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 9d9ea8dc2548495392b4f1ec2ca2d925e913d5207a42858c2c6814942d37f445 run #0: crashed: WARNING in kvm_wait run #1: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.27:./syz-fuzzer"] run #2: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.0.133:./syz-execprog"] Warning: Permanently added '10.128.0.133' (ECDSA) to the list of known hosts. run #3: crashed: INFO: task hung in io_uring_cancel_task_requests run #4: crashed: INFO: task hung in io_uring_cancel_task_requests run #5: crashed: INFO: task hung in io_uring_cancel_task_requests run #6: crashed: INFO: task hung in io_uring_cancel_task_requests run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait # git bisect bad 5b7c0c32c90494f5aaf13f417cff5dc204575597 Bisecting: 375 revisions left to test after this (roughly 9 steps) [5acd0cfbfbb5a688da1bfb1a2152b0c855115a35] net: lapbether: Prevent racing when checking whether the netif is running testing commit 5acd0cfbfbb5a688da1bfb1a2152b0c855115a35 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: d590cb9d8a5fa371ff84fbdd78444022ffd6d55ff2e907a4152dacdb150d5b6d run #0: basic kernel testing failed: WARNING in kvm_wait run #1: crashed: WARNING in kvm_wait run #2: crashed: INFO: task hung in io_uring_cancel_task_requests run #3: crashed: INFO: task hung in io_uring_cancel_task_requests run #4: boot failed: WARNING in kvm_wait run #5: boot failed: WARNING in kvm_wait run #6: boot failed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait # git bisect bad 5acd0cfbfbb5a688da1bfb1a2152b0c855115a35 Bisecting: 186 revisions left to test after this (roughly 8 steps) [3094552bcd726682ded98e4f4aa97a7c6646f638] net/mlx5: SF, Fix return type testing commit 3094552bcd726682ded98e4f4aa97a7c6646f638 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 31581e5529036e3b52a41962231b42215f6d3dff2fad9b5346ca47356dbc997f run #0: basic kernel testing failed: WARNING in kvm_wait run #1: basic kernel testing failed: WARNING in kvm_wait run #2: crashed: INFO: task hung in io_uring_cancel_task_requests run #3: crashed: INFO: task hung in io_uring_cancel_task_requests run #4: crashed: INFO: task hung in io_uring_cancel_task_requests run #5: crashed: INFO: task hung in io_uring_cancel_task_requests run #6: crashed: INFO: task hung in io_uring_cancel_task_requests run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait # git bisect bad 3094552bcd726682ded98e4f4aa97a7c6646f638 Bisecting: 93 revisions left to test after this (roughly 7 steps) [3fcd50d6f9a963a21e142d71be135eff6a374d2d] selftests/bpf: Add BTF_KIND_FLOAT to test_core_reloc_size testing commit 3fcd50d6f9a963a21e142d71be135eff6a374d2d compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: b2c14a3799bc496c38ee485724ec5d9ab133000b2319a8f345145e5c306eedbe run #0: basic kernel testing failed: WARNING in kvm_wait run #1: basic kernel testing failed: WARNING in kvm_wait run #2: boot failed: WARNING in kvm_wait run #3: boot failed: WARNING in kvm_wait run #4: boot failed: WARNING in kvm_wait run #5: boot failed: WARNING in kvm_wait run #6: boot failed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: OK run #9: OK # git bisect skip 3fcd50d6f9a963a21e142d71be135eff6a374d2d Bisecting: 93 revisions left to test after this (roughly 7 steps) [bbb41728e61a602ec76cbfec2a49ccc763d305b7] Merge branch 'load-acquire/store-release barriers for' testing commit bbb41728e61a602ec76cbfec2a49ccc763d305b7 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: b2c14a3799bc496c38ee485724ec5d9ab133000b2319a8f345145e5c306eedbe run #0: basic kernel testing failed: WARNING in kvm_wait run #1: boot failed: WARNING in kvm_wait run #2: boot failed: WARNING in kvm_wait run #3: boot failed: WARNING in kvm_wait run #4: boot failed: WARNING in kvm_wait run #5: boot failed: WARNING in kvm_wait run #6: boot failed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: OK # git bisect skip bbb41728e61a602ec76cbfec2a49ccc763d305b7 Bisecting: 93 revisions left to test after this (roughly 7 steps) [1b1ce92b24331b569a444858fc487a1ca19dc778] libbpf: Fix whitespace in btf_add_composite() comment testing commit 1b1ce92b24331b569a444858fc487a1ca19dc778 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: b4276645d4bf4be7cf51b728076a65b17f4ed3339a22404b185ded933c5cd10b run #0: basic kernel testing failed: WARNING in kvm_wait run #1: crashed: WARNING in kvm_wait run #2: boot failed: WARNING in kvm_wait run #3: boot failed: WARNING in kvm_wait run #4: boot failed: WARNING in kvm_wait run #5: boot failed: WARNING in kvm_wait run #6: boot failed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait # git bisect bad 1b1ce92b24331b569a444858fc487a1ca19dc778 Bisecting: 25 revisions left to test after this (roughly 5 steps) [4675e234b9e15159894b90ead9340e1dc202b670] sock_map: Make sock_map_prog_update() static testing commit 4675e234b9e15159894b90ead9340e1dc202b670 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: f9b730596a86d9153e5cf4db5da3a5826fe005698a7b13e1d241db0d5051cf01 run #0: basic kernel testing failed: WARNING in kvm_wait run #1: crashed: WARNING in kvm_wait run #2: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.1.75:./syz-execprog"] Warning: Permanently added '10.128.1.75' (ECDSA) to the list of known hosts. run #3: crashed: WARNING in kvm_wait run #4: boot failed: WARNING in kvm_wait run #5: boot failed: WARNING in kvm_wait run #6: boot failed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: OK run #9: OK # git bisect bad 4675e234b9e15159894b90ead9340e1dc202b670 Bisecting: 12 revisions left to test after this (roughly 4 steps) [523a4cf491b3c9e2d546040d57250f1a0ca84f03] bpf: Use MAX_BPF_FUNC_REG_ARGS macro testing commit 523a4cf491b3c9e2d546040d57250f1a0ca84f03 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 225818d28272dfe2916240751f38c472c0b49b5a0a9be18e8a2e5a12d017c440 run #0: basic kernel testing failed: WARNING in kvm_wait run #1: basic kernel testing failed: WARNING in kvm_wait run #2: basic kernel testing failed: WARNING in kvm_wait run #3: crashed: WARNING in kvm_wait run #4: boot failed: WARNING in kvm_wait run #5: boot failed: WARNING in kvm_wait run #6: boot failed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: OK run #9: OK reproducer seems to be flaky # git bisect bad 523a4cf491b3c9e2d546040d57250f1a0ca84f03 Bisecting: 6 revisions left to test after this (roughly 3 steps) [a10787e6d58c24b51e91c19c6d16c5da89fcaa4b] bpf: Enable task local storage for tracing programs testing commit a10787e6d58c24b51e91c19c6d16c5da89fcaa4b compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 39d99d773d9b45d11b2daff922e71985a1da36c6fb3d39e9a15d52801d0974d1 run #0: basic kernel testing failed: WARNING in kvm_wait run #1: crashed: WARNING in kvm_wait run #2: crashed: WARNING in kvm_wait run #3: crashed: WARNING in kvm_wait run #4: boot failed: WARNING in kvm_wait run #5: boot failed: WARNING in kvm_wait run #6: boot failed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait run #10: boot failed: WARNING in kvm_wait run #11: boot failed: WARNING in kvm_wait run #12: boot failed: WARNING in kvm_wait run #13: boot failed: WARNING in kvm_wait run #14: boot failed: WARNING in kvm_wait run #15: boot failed: WARNING in kvm_wait run #16: boot failed: WARNING in kvm_wait run #17: boot failed: WARNING in kvm_wait run #18: boot failed: WARNING in kvm_wait run #19: OK # git bisect bad a10787e6d58c24b51e91c19c6d16c5da89fcaa4b Bisecting: 2 revisions left to test after this (roughly 2 steps) [ab5bd583b9289666e918f9e5f672d33ccdfd49b2] virtio-net: Support IFF_TX_SKB_NO_LINEAR flag testing commit ab5bd583b9289666e918f9e5f672d33ccdfd49b2 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 70cafaa5aaacaa4bc3ecdc98bb46b9f9b4d35b39d54931ed14588c944165a55e run #0: basic kernel testing failed: WARNING in kvm_wait run #1: basic kernel testing failed: WARNING in kvm_wait run #2: crashed: WARNING in kvm_wait run #3: crashed: WARNING in kvm_wait run #4: crashed: WARNING in kvm_wait run #5: crashed: WARNING in kvm_wait run #6: crashed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait run #10: boot failed: WARNING in kvm_wait run #11: boot failed: WARNING in kvm_wait run #12: boot failed: WARNING in kvm_wait run #13: boot failed: WARNING in kvm_wait run #14: boot failed: WARNING in kvm_wait run #15: boot failed: WARNING in kvm_wait run #16: boot failed: WARNING in kvm_wait run #17: OK run #18: OK run #19: OK # git bisect bad ab5bd583b9289666e918f9e5f672d33ccdfd49b2 Bisecting: 1 revision left to test after this (roughly 1 step) [2463e073497385ef63c220571013a2b89e9b95cc] netdevice: Add missing IFF_PHONY_HEADROOM self-definition testing commit 2463e073497385ef63c220571013a2b89e9b95cc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 7182201df397867b9ec2592188b64cefa9e0e7b750195c2a4311d0756ebb391a run #0: basic kernel testing failed: WARNING in kvm_wait run #1: basic kernel testing failed: WARNING in kvm_wait run #2: basic kernel testing failed: WARNING in kvm_wait run #3: basic kernel testing failed: WARNING in kvm_wait run #4: crashed: WARNING in kvm_wait run #5: crashed: WARNING in kvm_wait run #6: crashed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait run #10: boot failed: WARNING in kvm_wait run #11: boot failed: WARNING in kvm_wait run #12: boot failed: WARNING in kvm_wait run #13: boot failed: WARNING in kvm_wait run #14: boot failed: WARNING in kvm_wait run #15: boot failed: WARNING in kvm_wait run #16: boot failed: WARNING in kvm_wait run #17: OK run #18: OK run #19: OK # git bisect bad 2463e073497385ef63c220571013a2b89e9b95cc Bisecting: 0 revisions left to test after this (roughly 0 steps) [b9fc8b4a591811546fec2dbef7e9f809362100c9] bpf: Add kernel/modules BTF presence checks to bpftool feature command testing commit b9fc8b4a591811546fec2dbef7e9f809362100c9 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 2dd082484b081a327ffc75c2bc9121936c876316014d38dc47cfec29b5621e9b run #0: basic kernel testing failed: WARNING in kvm_wait run #1: basic kernel testing failed: WARNING in kvm_wait run #2: basic kernel testing failed: WARNING in kvm_wait run #3: basic kernel testing failed: WARNING in kvm_wait run #4: basic kernel testing failed: WARNING in kvm_wait run #5: basic kernel testing failed: WARNING in kvm_wait run #6: crashed: WARNING in kvm_wait run #7: crashed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait run #10: boot failed: WARNING in kvm_wait run #11: boot failed: WARNING in kvm_wait run #12: boot failed: WARNING in kvm_wait run #13: boot failed: WARNING in kvm_wait run #14: boot failed: WARNING in kvm_wait run #15: boot failed: WARNING in kvm_wait run #16: OK run #17: OK run #18: OK run #19: OK # git bisect bad b9fc8b4a591811546fec2dbef7e9f809362100c9 b9fc8b4a591811546fec2dbef7e9f809362100c9 is the first bad commit commit b9fc8b4a591811546fec2dbef7e9f809362100c9 Author: Grant Seltzer Date: Mon Feb 22 19:58:46 2021 +0000 bpf: Add kernel/modules BTF presence checks to bpftool feature command This adds both the CONFIG_DEBUG_INFO_BTF and CONFIG_DEBUG_INFO_BTF_MODULES kernel compile option to output of the bpftool feature command. This is relevant for developers that want to account for data structure definition differences between kernels. Signed-off-by: Grant Seltzer Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Acked-by: Martin KaFai Lau Link: https://lore.kernel.org/bpf/20210222195846.155483-1-grantseltzer@gmail.com tools/bpf/bpftool/feature.c | 4 ++++ 1 file changed, 4 insertions(+) parent commit d310ec03a34e92a77302edb804f7d68ee4f01ba0 wasn't tested testing commit d310ec03a34e92a77302edb804f7d68ee4f01ba0 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 2dd082484b081a327ffc75c2bc9121936c876316014d38dc47cfec29b5621e9b culprit signature: 2dd082484b081a327ffc75c2bc9121936c876316014d38dc47cfec29b5621e9b parent signature: 2dd082484b081a327ffc75c2bc9121936c876316014d38dc47cfec29b5621e9b Reproducer flagged being flaky revisions tested: 19, total time: 5h32m12.868474806s (build: 2h8m45.379458016s, test: 3h21m12.645849325s) first bad commit: b9fc8b4a591811546fec2dbef7e9f809362100c9 bpf: Add kernel/modules BTF presence checks to bpftool feature command recipients (to): ["andrii@kernel.org" "daniel@iogearbox.net" "grantseltzer@gmail.com" "kafai@fb.com"] recipients (cc): [] crash: WARNING in kvm_wait ------------[ cut here ]------------ raw_local_irq_restore() called with IRQs enabled WARNING: CPU: 0 PID: 12649 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x1d/0x20 kernel/locking/irqflag-debug.c:10 Modules linked in: CPU: 0 PID: 12649 Comm: syz-executor.1 Not tainted 5.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:warn_bogus_irq_restore+0x1d/0x20 kernel/locking/irqflag-debug.c:10 Code: 24 48 c7 c7 60 7b 89 88 e8 ec df c1 ff 80 3d ee fe e5 03 00 74 01 c3 48 c7 c7 60 f3 8a 88 c6 05 dd fe e5 03 01 e8 e1 de c1 ff <0f> 0b c3 48 39 77 10 0f 84 97 00 00 00 66 f7 47 22 f0 ff 74 4b 48 RSP: 0018:ffffc9000d11f6b8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff888016ceead8 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffffffff88de2c80 RDI: fffff52001a23ec9 RBP: 0000000000000200 R08: 0000000000000001 R09: ffff8880b9e4c1a7 R10: ffffed10173c9834 R11: 0000000000000001 R12: 0000000000000003 R13: ffffed1002d9dd5b R14: 0000000000000001 R15: ffff8880b9e51f00 FS: 0000000002360400(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001f79808 CR3: 0000000040b9d000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kvm_wait arch/x86/kernel/kvm.c:860 [inline] kvm_wait+0xc9/0xe0 arch/x86/kernel/kvm.c:837 pv_wait arch/x86/include/asm/paravirt.h:564 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x8b8/0xb40 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x200/0x2b0 kernel/locking/spinlock_debug.c:113 spin_lock include/linux/spinlock.h:354 [inline] lockref_get_not_dead+0xb/0x60 lib/lockref.c:211 __legitimize_path+0x69/0x160 fs/namei.c:617 try_to_unlazy+0xe5/0x2b0 fs/namei.c:698 lookup_fast+0x31f/0x5c0 fs/namei.c:1475 walk_component+0xb1/0x5e0 fs/namei.c:1858 link_path_walk.part.0+0x41c/0x940 fs/namei.c:2184 link_path_walk fs/namei.c:2114 [inline] path_openat+0x202/0x21c0 fs/namei.c:3366 do_filp_open+0x16d/0x390 fs/namei.c:3397 do_sys_openat2+0x11e/0x360 fs/open.c:1178 do_sys_open fs/open.c:1194 [inline] __do_sys_openat fs/open.c:1210 [inline] __se_sys_openat fs/open.c:1205 [inline] __x64_sys_openat+0x11b/0x1d0 fs/open.c:1205 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4196d4 Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44 RSP: 002b:00007ffe3d0b1930 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000004196d4 RDX: 0000000000080001 RSI: 00000000004bfd4c RDI: 00000000ffffff9c RBP: 00000000004bfd4c R08: 0000000000000000 R09: 00007ffe3d0b1920 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000080001 R13: 00007ffe3d0b19d0 R14: 0000000000000000 R15: 00007ffe3d0b1f80 ---------------- Code disassembly (best guess): 0: 24 48 and $0x48,%al 2: c7 c7 60 7b 89 88 mov $0x88897b60,%edi 8: e8 ec df c1 ff callq 0xffc1dff9 d: 80 3d ee fe e5 03 00 cmpb $0x0,0x3e5feee(%rip) # 0x3e5ff02 14: 74 01 je 0x17 16: c3 retq 17: 48 c7 c7 60 f3 8a 88 mov $0xffffffff888af360,%rdi 1e: c6 05 dd fe e5 03 01 movb $0x1,0x3e5fedd(%rip) # 0x3e5ff02 25: e8 e1 de c1 ff callq 0xffc1df0b 2a: 0f 0b ud2 <-- trapping instruction 2c: c3 retq 2d: 48 39 77 10 cmp %rsi,0x10(%rdi) 31: 0f 84 97 00 00 00 je 0xce 37: 66 f7 47 22 f0 ff testw $0xfff0,0x22(%rdi) 3d: 74 4b je 0x8a 3f: 48 rex.W