bisecting cause commit starting from 64570fbc14f8d7cb3fe3995f20e26bc25ce4b2cc building syzkaller on 838e7e2cd9228583ca33c49a39aea4d863d3e36d testing commit 64570fbc14f8d7cb3fe3995f20e26bc25ce4b2cc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 73d8aa11e47d71cf9242913b10f4100fd0ed6e1c83357c356b4d35f73c6b965c run #0: crashed: INFO: rcu detected stall in sys_clock_settime run #1: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #2: crashed: INFO: rcu detected stall in call_usermodehelper_exec_async run #3: crashed: INFO: rcu detected stall in rtnl_newlink run #4: crashed: INFO: rcu detected stall in timerfd_release run #5: crashed: INFO: rcu detected stall in blk_complete_reqs run #6: crashed: INFO: rcu detected stall in newstat run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in newstat run #9: crashed: INFO: rcu detected stall in net_rx_action run #10: crashed: INFO: rcu detected stall in rtnl_newlink run #11: crashed: INFO: rcu detected stall in __do_softirq run #12: crashed: no output from test machine run #13: crashed: no output from test machine run #14: crashed: no output from test machine run #15: crashed: no output from test machine run #16: crashed: no output from test machine run #17: crashed: no output from test machine run #18: crashed: no output from test machine run #19: crashed: no output from test machine testing release v5.14 testing commit 7d2a07b769330c34b4deabeed939325c77a7ec2f compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 8c219514f33cf5f7e995cffb6643e798eb9f0e406da2dbcbb7423680d5a3f503 run #0: crashed: INFO: rcu detected stall in smp_call_function run #1: crashed: INFO: rcu detected stall in smp_call_function run #2: crashed: INFO: rcu detected stall in debug_check_no_obj_freed run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: INFO: rcu detected stall in smp_call_function run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: crashed: no output from test machine testing release v5.13 testing commit 62fb9874f5da54fdb243003b386128037319b219 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: f0d89eb8f9d4c9864735171e2eb3e5feeaf7d26439e5a7bae1ef45fb8f9578ab run #0: crashed: INFO: rcu detected stall in smp_call_function run #1: crashed: INFO: rcu detected stall in smp_call_function run #2: crashed: BUG: soft lockup in smp_call_function run #3: crashed: BUG: soft lockup in smp_call_function run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: INFO: rcu detected stall in smp_call_function run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: crashed: no output from test machine testing release v5.12 testing commit 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: f3685dd148c0d7f62ec2c26b6ccd338a86cdce80e434ce6a225cc94922f0c2db run #0: crashed: INFO: rcu detected stall in smp_call_function run #1: crashed: INFO: rcu detected stall in smp_call_function run #2: crashed: INFO: rcu detected stall in smp_call_function run #3: crashed: INFO: rcu detected stall in smp_call_function run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: BUG: soft lockup in smp_call_function run #8: crashed: no output from test machine run #9: crashed: BUG: soft lockup in smp_call_function testing release v5.11 testing commit f40ddce88593482919761f74910f42f4b84c004b compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 1f5c2551444cc5a9717d44acd7d59dea64de831f0ec6d140c76c393b1a8be7b9 run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in smp_call_function run #2: crashed: INFO: rcu detected stall in smp_call_function run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: crashed: no output from test machine testing release v5.10 testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 6fadf1b92bad0f2eefaa047034d1044e5b34f9c1872d7811646aed5049f137a7 run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in smp_call_function run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in smp_call_function run #5: crashed: INFO: rcu detected stall in do_idle run #6: crashed: INFO: rcu detected stall in smp_call_function run #7: crashed: INFO: rcu detected stall in do_idle run #8: crashed: BUG: soft lockup in smp_call_function run #9: crashed: no output from test machine testing release v5.9 testing commit bbf5c979011a099af5dc76498918ed7df445635b compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 79f11e7a8eed3e447672927cef5561c2ba920551ad72927757519c7fec1a8d58 run #0: crashed: INFO: rcu detected stall in sys_clock_settime run #1: crashed: INFO: rcu detected stall in smp_call_function run #2: crashed: BUG: soft lockup in smp_call_function run #3: crashed: BUG: soft lockup in smp_call_function run #4: crashed: no output from test machine run #5: crashed: INFO: rcu detected stall in smp_call_function run #6: crashed: no output from test machine run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: crashed: BUG: soft lockup in smp_call_function testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 3a10be75bbfb45817efdf085ef0d7bb7934a9655779dbb5140e82be0f1d7e80e run #0: crashed: INFO: rcu detected stall in sys_clock_settime run #1: crashed: INFO: rcu detected stall in sys_clock_settime run #2: crashed: INFO: rcu detected stall in sys_clock_settime run #3: crashed: INFO: rcu detected stall in sys_clock_settime run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: BUG: soft lockup in smp_call_function run #8: crashed: BUG: soft lockup in smp_call_function run #9: crashed: INFO: rcu detected stall in sys_clock_settime testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 6c15458155203600f9eead46349048b82bfa958d35a9c08152de83a646393e6d run #0: crashed: INFO: rcu detected stall in sys_clock_settime run #1: crashed: INFO: rcu detected stall in rtnl_newlink run #2: crashed: INFO: rcu detected stall in netlink_sendmsg run #3: crashed: INFO: rcu detected stall in sys_clock_settime run #4: crashed: INFO: rcu detected stall in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: BUG: soft lockup in smp_call_function run #8: crashed: BUG: soft lockup in smp_call_function run #9: crashed: BUG: soft lockup in smp_call_function testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 3ec8f747eafa1b5378a4cc37ea09f1a8798bfd8f4ee7c3e4b1f24c42b3888ba2 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in batadv_nc_worker run #2: crashed: INFO: rcu detected stall in ip_rcv run #3: crashed: INFO: rcu detected stall in sys_clock_settime run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: BUG: soft lockup in smp_call_function run #8: crashed: no output from test machine run #9: crashed: INFO: rcu detected stall in corrupted testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 1e50721387abc6962be73a376a0e25993de05554e109369a0cf0059deb740472 all runs: crashed: BUG: sleeping function called from invalid context in netif_reset_xps_queues testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 9746f3b655633436e9e0647dfbf6f8cc6036487689cc04d539ee7143aa30fdd9 all runs: crashed: BUG: sleeping function called from invalid context in netif_reset_xps_queues testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 54920ccfe5023ac1310b5de92553c4d02e1b7ef19a40c59ae996f8f35d0795ad all runs: crashed: BUG: sleeping function called from invalid context in netif_reset_xps_queues testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 63727acb5f1a8479cf00e4aeaeb8b93f969f620cc11da3adce5ab8324955b755 all runs: crashed: BUG: sleeping function called from invalid context in netif_reset_xps_queues testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 7050ee04822f2db21ebf0899802481c3b2ef8a9ecc304d7dd18796d74cadf966 run #0: crashed: INFO: rcu detected stall in sys_clock_settime run #1: crashed: INFO: rcu detected stall in sys_clock_settime run #2: crashed: INFO: rcu detected stall in sys_clock_settime run #3: crashed: INFO: rcu detected stall in smp_call_function run #4: crashed: INFO: rcu detected stall in sys_clock_settime run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: BUG: soft lockup in smp_call_function run #8: crashed: BUG: soft lockup in smp_call_function run #9: crashed: INFO: rcu detected stall in smp_call_function testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 74b9cbc5d612f13207febb901e714d31acb8cf018ab074f1a6cc514f3f821600 run #0: crashed: BUG: soft lockup in smp_call_function run #1: crashed: BUG: soft lockup in smp_call_function run #2: crashed: BUG: soft lockup in smp_call_function run #3: crashed: BUG: soft lockup in smp_call_function run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: INFO: rcu detected stall in sys_clock_settime run #7: crashed: BUG: soft lockup in smp_call_function run #8: crashed: no output from test machine run #9: crashed: no output from test machine testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 92914ec48208e3c87dc6d6214cdeeae2ee2698a9351885551cdba5848bf55369 run #0: crashed: BUG: soft lockup in smp_call_function run #1: crashed: BUG: soft lockup in smp_call_function run #2: crashed: BUG: soft lockup in smp_call_function run #3: crashed: BUG: soft lockup in smp_call_function run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: BUG: soft lockup in smp_call_function run #8: crashed: BUG: soft lockup in smp_call_function run #9: crashed: INFO: rcu detected stall in corrupted testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 8fe169ca4face352b64320fea2eb4034e3a68df48d7d775d45a08bc0400b5de9 all runs: OK # git bisect start 8fe28cb58bcb235034b64cbbb7550a8a43fd88be 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d Bisecting: 7502 revisions left to test after this (roughly 13 steps) [685f7e4f161425b137056abe35ba8ef7b669d83d] Merge tag 'powerpc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux testing commit 685f7e4f161425b137056abe35ba8ef7b669d83d compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: b4b2023f9a4116b8c8f384c3fe86bc9351f820bbf852931f4076585c0a9aa62a run #0: crashed: BUG: soft lockup in smp_call_function run #1: crashed: BUG: soft lockup in smp_call_function run #2: crashed: BUG: soft lockup in smp_call_function run #3: crashed: BUG: soft lockup in smp_call_function run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: INFO: rcu detected stall in sys_futex run #8: crashed: INFO: rcu detected stall in sys_clock_settime run #9: crashed: no output from test machine # git bisect bad 685f7e4f161425b137056abe35ba8ef7b669d83d Bisecting: 3249 revisions left to test after this (roughly 12 steps) [50b825d7e87f4cff7070df6eb26390152bb29537] Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next testing commit 50b825d7e87f4cff7070df6eb26390152bb29537 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 9648c6447f886c0d45d81261670bad91d29c840089ed3b62a1a1b0d0dada68e0 run #0: crashed: BUG: soft lockup in smp_call_function run #1: crashed: BUG: soft lockup in smp_call_function run #2: crashed: BUG: soft lockup in smp_call_function run #3: crashed: BUG: soft lockup in smp_call_function run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: INFO: rcu detected stall in sys_clock_settime run #8: crashed: INFO: rcu detected stall in sys_execve run #9: crashed: no output from test machine # git bisect bad 50b825d7e87f4cff7070df6eb26390152bb29537 Bisecting: 2120 revisions left to test after this (roughly 11 steps) [99e9acd85ccbdc8f5785f9e961d4956e96bd6aa5] Merge tag 'mlx5-updates-2018-10-17' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux testing commit 99e9acd85ccbdc8f5785f9e961d4956e96bd6aa5 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 6c7c26bc5c0c9649a48a07dc8b17ca3b95a718df7c3be9d215ad82bc24994c82 run #0: crashed: BUG: soft lockup in smp_call_function run #1: crashed: BUG: soft lockup in smp_call_function run #2: crashed: BUG: soft lockup in smp_call_function run #3: crashed: BUG: soft lockup in smp_call_function run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: BUG: soft lockup in smp_call_function run #8: crashed: INFO: rcu detected stall in ext4_file_read_iter run #9: crashed: no output from test machine # git bisect bad 99e9acd85ccbdc8f5785f9e961d4956e96bd6aa5 Bisecting: 989 revisions left to test after this (roughly 10 steps) [d793fb46822ff7408a1767313ef6b12e811baa55] Merge tag 'wireless-drivers-next-for-davem-2018-10-02' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next testing commit d793fb46822ff7408a1767313ef6b12e811baa55 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 06efd86d52c8765828a7ca313ad12ead966ed541ebf035d5a9fba583fdc87ed0 all runs: OK # git bisect good d793fb46822ff7408a1767313ef6b12e811baa55 Bisecting: 461 revisions left to test after this (roughly 9 steps) [071a234ad744ab9a1e9c948874d5f646a2964734] Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next testing commit 071a234ad744ab9a1e9c948874d5f646a2964734 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 1eb123c651b74dafb362fdabff2034fb748376ed73295fcf14cee2c473a0c1d8 run #0: basic kernel testing failed: KASAN: null-ptr-deref Read in batadv_tvlv_container_ogm_append run #1: crashed: BUG: soft lockup in smp_call_function run #2: crashed: BUG: soft lockup in smp_call_function run #3: crashed: BUG: soft lockup in smp_call_function run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: BUG: soft lockup in smp_call_function run #8: crashed: INFO: rcu detected stall in dev_ioctl run #9: crashed: BUG: soft lockup in smp_call_function # git bisect bad 071a234ad744ab9a1e9c948874d5f646a2964734 Bisecting: 275 revisions left to test after this (roughly 8 steps) [5580d810560da33804053ae3bca13110c9a8d5e8] Merge tag 'mt76-for-kvalo-2018-10-05' of https://github.com/nbd168/wireless testing commit 5580d810560da33804053ae3bca13110c9a8d5e8 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 51b4eb6986e1ad432af1753aaf1da181144e3b40af507ff4043db4cd8feef602 all runs: OK # git bisect good 5580d810560da33804053ae3bca13110c9a8d5e8 Bisecting: 137 revisions left to test after this (roughly 7 steps) [b245d32c995868879f361d252f32bb8a2ca33deb] net: sched: cls_u32: keep track of knodes count in tc_u_common testing commit b245d32c995868879f361d252f32bb8a2ca33deb compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 48f0ef601df69382ac5dee5f1aac94fa5112fa03784e328412211864195c3cc2 run #0: crashed: BUG: soft lockup in smp_call_function run #1: crashed: BUG: soft lockup in smp_call_function run #2: crashed: BUG: soft lockup in smp_call_function run #3: crashed: BUG: soft lockup in smp_call_function run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in fb_flashcursor run #9: crashed: BUG: soft lockup in smp_call_function # git bisect bad b245d32c995868879f361d252f32bb8a2ca33deb Bisecting: 68 revisions left to test after this (roughly 6 steps) [cc5f0eb2164f9aa11fe631f8d905192e0233e262] net: Move free of fib_metrics to helper testing commit cc5f0eb2164f9aa11fe631f8d905192e0233e262 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 628000c4d2a7221c3a137750b1aa3da9ab5fbc56e4a0ebc28235df8728fbe2f9 run #0: crashed: BUG: soft lockup in smp_call_function run #1: crashed: BUG: soft lockup in smp_call_function run #2: crashed: BUG: soft lockup in smp_call_function run #3: crashed: BUG: soft lockup in smp_call_function run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: BUG: soft lockup in smp_call_function run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: BUG: soft lockup in smp_call_function run #8: crashed: INFO: rcu detected stall in schedule_timeout run #9: crashed: INFO: rcu detected stall in linkwatch_event # git bisect bad cc5f0eb2164f9aa11fe631f8d905192e0233e262 Bisecting: 33 revisions left to test after this (roughly 5 steps) [6a5e6b118092dfddc545d95911d66d6562f05281] Merge branch 'ieee802154-for-davem-2018-10-04' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan-next testing commit 6a5e6b118092dfddc545d95911d66d6562f05281 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: f2207cffbb1a87621b49f8614dd6e2b39f18d5bcebbbeaf31877d69eb76bf4c1 all runs: OK # git bisect good 6a5e6b118092dfddc545d95911d66d6562f05281 Bisecting: 15 revisions left to test after this (roughly 4 steps) [9e50727f0e710e25e9fd740c9f43f51b37757773] Merge tag 'mlx5-updates-2018-10-03' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux testing commit 9e50727f0e710e25e9fd740c9f43f51b37757773 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 0ca06d3ceb6626dff362cdee56627b315386a11425302d5ab90a68fac095c408 run #0: basic kernel testing failed: KASAN: null-ptr-deref Read in batadv_tvlv_container_ogm_append run #1: crashed: general protection fault in batadv_iv_ogm_queue_add run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK reproducer seems to be flaky # git bisect bad 9e50727f0e710e25e9fd740c9f43f51b37757773 Bisecting: 8 revisions left to test after this (roughly 3 steps) [e908bcf4f1a271e7c264dcbffc5881ced8bfacee] rxrpc: Allow the reply time to be obtained on a client call testing commit e908bcf4f1a271e7c264dcbffc5881ced8bfacee compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 89688fb9198b6a01dcfb185b04f2933d279c75555692d68771d8754c77c41ed6 run #0: basic kernel testing failed: general protection fault in batadv_iv_ogm_queue_add run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK # git bisect good e908bcf4f1a271e7c264dcbffc5881ced8bfacee Bisecting: 4 revisions left to test after this (roughly 2 steps) [94563847a8733c27b2f56ac82bad4c78e074e244] net/mlx5e: Add new counter for aRFS rule insertion failures testing commit 94563847a8733c27b2f56ac82bad4c78e074e244 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: f13a0b0f41907b2eca1b17a6c078f568cc24e0fe0d1faad8fb39db0c69855b6d all runs: OK # git bisect good 94563847a8733c27b2f56ac82bad4c78e074e244 Bisecting: 2 revisions left to test after this (roughly 1 step) [bbb4c4323a4d9cb5ca04db904aa3050a7586839a] dns: Allow the dns resolver to retrieve a server set testing commit bbb4c4323a4d9cb5ca04db904aa3050a7586839a compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 60a57c854cd23ce54a1a9bc11cd654415c713da442ec16610e35e4ef3709e2c5 run #0: basic kernel testing failed: KASAN: null-ptr-deref Read in batadv_tvlv_container_ogm_append run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK # git bisect good bbb4c4323a4d9cb5ca04db904aa3050a7586839a Bisecting: 1 revision left to test after this (roughly 1 step) [fcd29ad17c6ff885dfae58f557e9323941e63ba2] net/mlx5: Add Fast teardown support testing commit fcd29ad17c6ff885dfae58f557e9323941e63ba2 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: f13a0b0f41907b2eca1b17a6c078f568cc24e0fe0d1faad8fb39db0c69855b6d run #0: crashed: general protection fault in batadv_iv_ogm_queue_add run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK # git bisect bad fcd29ad17c6ff885dfae58f557e9323941e63ba2 fcd29ad17c6ff885dfae58f557e9323941e63ba2 is the first bad commit commit fcd29ad17c6ff885dfae58f557e9323941e63ba2 Author: Feras Daoud Date: Thu Aug 9 09:55:21 2018 +0300 net/mlx5: Add Fast teardown support Today mlx5 devices support two teardown modes: 1- Regular teardown 2- Force teardown This change introduces the enhanced version of the "Force teardown" that allows SW to perform teardown in a faster way without the need to reclaim all the pages. Fast teardown provides the following advantages: 1- Fix a FW race condition that could cause command timeout 2- Avoid moving to polling mode 3- Close the vport to prevent PCI ACK to be sent without been scatter to memory Signed-off-by: Feras Daoud Reviewed-by: Majd Dibbiny Signed-off-by: Saeed Mahameed drivers/net/ethernet/mellanox/mlx5/core/fw.c | 50 +++++++++++++++++++++- drivers/net/ethernet/mellanox/mlx5/core/health.c | 25 ++++++----- drivers/net/ethernet/mellanox/mlx5/core/main.c | 29 +++++++++---- .../net/ethernet/mellanox/mlx5/core/mlx5_core.h | 12 ++++++ include/linux/mlx5/device.h | 4 ++ include/linux/mlx5/mlx5_ifc.h | 6 ++- 6 files changed, 103 insertions(+), 23 deletions(-) culprit signature: f13a0b0f41907b2eca1b17a6c078f568cc24e0fe0d1faad8fb39db0c69855b6d parent signature: f13a0b0f41907b2eca1b17a6c078f568cc24e0fe0d1faad8fb39db0c69855b6d Reproducer flagged being flaky revisions tested: 32, total time: 7h38m8.822788108s (build: 3h16m45.454195771s, test: 4h16m52.428096469s) first bad commit: fcd29ad17c6ff885dfae58f557e9323941e63ba2 net/mlx5: Add Fast teardown support recipients (to): ["ferasda@mellanox.com" "majd@mellanox.com" "saeedm@mellanox.com"] recipients (cc): [] crash: general protection fault in batadv_iv_ogm_queue_add bond0 (unregistering): Released all slaves batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 4.19.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet RIP: 0010:batadv_iv_ogm_queue_add+0x9b/0xec0 net/batman-adv/bat_iv_ogm.c:612 Code: 44 89 8d 64 ff ff ff c7 02 f1 f1 f1 f1 c7 42 04 04 f2 f2 f2 48 89 fa 65 48 8b 0c 25 28 00 00 00 48 89 4d d0 31 c9 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 cb 0b 00 00 RSP: 0018:ffff8800b40d7ac0 EFLAGS: 00010256 RAX: dffffc0000000000 RBX: ffff8800ab433180 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffff8800b40d7bd8 R08: ffff8800ab433180 R09: 0000000000000001 R10: ffffed001681af8f R11: 0000000000000003 R12: ffff8800ab433180 R13: dffffc0000000000 R14: ffff8800ab7b2bc0 R15: 000000000000003c FS: 0000000000000000(0000) GS:ffff8800ba200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b333379148 CR3: 000000009f54e000 CR4: 0000000000340ef0 Call Trace: batadv_iv_ogm_schedule+0xb47/0xe80 net/batman-adv/bat_iv_ogm.c:820 batadv_iv_send_outstanding_bat_ogm_packet+0x4a2/0x7a0 net/batman-adv/bat_iv_ogm.c:1682 process_one_work+0x7b9/0x14f0 kernel/workqueue.c:2153 worker_thread+0x85/0xb60 kernel/workqueue.c:2296 kthread+0x324/0x3e0 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:413 Modules linked in: ---[ end trace 5f3aadc9215c1ec3 ]--- RIP: 0010:batadv_iv_ogm_queue_add+0x9b/0xec0 net/batman-adv/bat_iv_ogm.c:612 Code: 44 89 8d 64 ff ff ff c7 02 f1 f1 f1 f1 c7 42 04 04 f2 f2 f2 48 89 fa 65 48 8b 0c 25 28 00 00 00 48 89 4d d0 31 c9 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 cb 0b 00 00 RSP: 0018:ffff8800b40d7ac0 EFLAGS: 00010256 RAX: dffffc0000000000 RBX: ffff8800ab433180 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffff8800b40d7bd8 R08: ffff8800ab433180 R09: 0000000000000001 R10: ffffed001681af8f R11: 0000000000000003 R12: ffff8800ab433180 R13: dffffc0000000000 R14: ffff8800ab7b2bc0 R15: 000000000000003c FS: 0000000000000000(0000) GS:ffff8800ba200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b333379148 CR3: 000000009f54e000 CR4: 0000000000340ef0 ---------------- Code disassembly (best guess): 0: 44 89 8d 64 ff ff ff mov %r9d,-0x9c(%rbp) 7: c7 02 f1 f1 f1 f1 movl $0xf1f1f1f1,(%rdx) d: c7 42 04 04 f2 f2 f2 movl $0xf2f2f204,0x4(%rdx) 14: 48 89 fa mov %rdi,%rdx 17: 65 48 8b 0c 25 28 00 mov %gs:0x28,%rcx 1e: 00 00 20: 48 89 4d d0 mov %rcx,-0x30(%rbp) 24: 31 c9 xor %ecx,%ecx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 48 89 fa mov %rdi,%rdx 31: 83 e2 07 and $0x7,%edx 34: 38 d0 cmp %dl,%al 36: 7f 08 jg 0x40 38: 84 c0 test %al,%al 3a: 0f 85 cb 0b 00 00 jne 0xc0b