bisecting cause commit starting from 08897940f458ee55416cf80ab13d2d8b9f20038e building syzkaller on 912f5df7fadf1d0214995def5446208d0f26c54b testing commit 08897940f458ee55416cf80ab13d2d8b9f20038e compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 9bc8887d14af27669e956bff4fdf48eb221d9ff56337966ea2ddb1185966442e all runs: crashed: possible deadlock in snd_hrtimer_callback testing release v5.18 testing commit 4b0986a3613c92f4ec1bdc7f60ec66fea135991f compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 8df8715a2a6fb292ba68cd8a812c9820a2233bb0abd8f85e437839aee438ee43 all runs: crashed: possible deadlock in snd_hrtimer_callback testing release v5.17 testing commit f443e374ae131c168a065ea1748feac6b2e76613 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 39cce090bef0c4e15e47a7973c54e69177d0381caa2156e4eb44b8d357f9db73 all runs: crashed: possible deadlock in snd_hrtimer_callback testing release v5.16 testing commit df0cc57e057f18e44dac8e6c18aba47ab53202f9 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 62fd53a150a2fdb4c01486426f32c31613bb027aafa5a0801373a965718582ea all runs: crashed: possible deadlock in snd_hrtimer_callback testing release v5.15 testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 062a829ead6677702e39b2be186f7d06cbe493c15bce5556d80b17659e886622 all runs: crashed: possible deadlock in snd_hrtimer_callback 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: a7708aad81861f3f4713b74dd383e23a161126f6ca13751cceb8fe5144861869 all runs: crashed: possible deadlock in kill_fasync 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: 5ae88113e79983c78da93b7ea8cdc1403fbe0442a7dfff4b5498e4619bec300f all runs: crashed: possible deadlock in kill_fasync 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: ebdc9bbdfc6dec15f3d13ef577648ed9e1142048b9cadce673b15d35a9ca7d6d all runs: crashed: possible deadlock in kill_fasync 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: cd3845a2bcdb46a0ed013078b412234aee27cdebe80a66b0b1de392ce275e5af all runs: crashed: possible deadlock in kill_fasync 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: 90f585c04b7b50150c33d76becb6ea6f01fb5a33ee8d6adb3adc5a3a0899d495 all runs: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns 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: 44f2685c4ecf56871f8ca47cf702ecd11ef14b1a00953986c2d84b97f1c9d81c all runs: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns 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: 22d303327c664d9ed13dbeb6ece8bd6a9e82ded74a9760ee000167129b73c38e all runs: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns 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: 660f436cf2f0a235a75bfd1b2dce2e5ae6aa60a2b4ede15e9b9329e84944285c all runs: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 01c35976f9d9dc8976f2ddfb0e5a741f7f2537d1ddfeb2eb534c339407fa24cf all runs: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: ffb9ab8f5875b3ce01ce4a543791f528f68276c41805561283d622be1ccba75c all runs: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 62a109696fb435d3663046032d0ae98329ed4d94e3b9b61b2b1e37983c3b59ce all runs: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: d945db7e6e9063afa3da990c26aa73123fd03511994d482ee71389718bbcdebb 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@10.128.0.91:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.91' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.2:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.2' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.112:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.112' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.124:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.1.124' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.5:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.5' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.6:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.6' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.9:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.9' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #7: 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@10.128.10.14:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.14' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #8: 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@10.128.10.15:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.15' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #9: 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@10.128.10.17:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.17' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 49d1dcee486e89fc9acf94abd3c70a84cd19e6e16861b38c3ab16025bc21a5da 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@10.128.10.15:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.15' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.22:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.149:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.149' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.16:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.16' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.24:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.24' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.33:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.33' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.26:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.26' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #7: 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@10.128.10.27:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.27' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #8: 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@10.128.0.233:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.233' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #9: 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@10.128.10.17:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.17' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: efc750606f45ebdff052652a9d27128f034b1de63fbcc871a0776b3211b18149 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@10.128.0.160:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.160' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.43:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.1.43' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.254:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.254' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.9:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.9' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.26:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.26' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.89:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.89' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.27:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.27' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #7: 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@10.128.10.28:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.28' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #8: 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@10.128.10.29:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.29' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #9: 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@10.128.10.32:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 16a556b5627b433f6610537568a018ba6f52f31ff332c6e3cac534d1192a2cc9 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@10.128.0.150:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.150' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.20:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.20' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.28:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.28' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.32:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.46:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.1.46' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.33:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.33' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.34:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.34' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #7: 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@10.128.10.35:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.35' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #8: 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@10.128.10.36:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.36' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #9: 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@10.128.10.37:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.37' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: e560b0669ba613fb4ca921c3eda645c1dc58f07cb9f984f751bafa049a21e596 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@10.128.0.71:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.71' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.124:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.124' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.162:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.162' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.75:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.1.75' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.118:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.118' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.67:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.67' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.149:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.149' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #7: 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@10.128.0.216:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.216' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #8: 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@10.128.10.32:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #9: 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@10.128.1.17:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.1.17' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: cac26d1d06cf46173cc06c9ade79c010bb1bd2f80bcaa13e9b805a62cb3f7c9a 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@10.128.0.81:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.81' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.254:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.254' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.14:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.14' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.8:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.8' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.20:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.20' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.44:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.0.44' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.22:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #7: 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@10.128.10.26:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.26' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #8: 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@10.128.10.27:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.27' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system run #9: 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@10.128.10.38:./syz-fuzzer"]: exit status 1 Warning: Permanently added '10.128.10.38' (ECDSA) to the list of known hosts. scp: ./syz-fuzzer: Read-only file system testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: dd5b2082de07db80768a8c0b2c361ec5db163247b170cd2fa513453d9e8a9451 all runs: boot failed: kernel panic: Attempted to kill init! testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 9a3decf8c93f1a725efdbe13f73e1461f34b7ac0f57bf6e59ffd2f981a0821d1 all runs: boot failed: kernel panic: Attempted to kill init! testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 4e734c02f30f464b74f61e78796a8a608f35753ee328e16cba2d414159c39403 all runs: boot failed: kernel panic: Attempted to kill init! testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 8c98dff6265b2698631206601340698d8d2107335ef0e142ef81edbeec3c96fc all runs: boot failed: can't ssh into the instance testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 07d544d3b636ba438fcb26376e8a337c932934257d1ee3017706f0f261c8c578 all runs: boot failed: can't ssh into the instance testing release v4.13 testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: de54f155f652e910c9b05905c02233bebe5c3c78525b2b108be11e3f216877de all runs: boot failed: can't ssh into the instance testing release v4.12 testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: b79878c2c1f14ec291d4f648eb2da6d32b133c554eeeb20ab5ea81fe06648fe3 all runs: boot failed: can't ssh into the instance testing release v4.11 testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 compiler: gcc version 7.5.0 (GCC) kernel signature: 3178da21a4e8da3f230ebc5610175db59b6f4fe55f047f27aa53bc3cd730acb2 all runs: boot failed: can't ssh into the instance testing release v4.10 testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd compiler: gcc version 5.5.0 (GCC) kernel signature: 8e6ce4d7d0ecd3532ed4d0ae23b5ae5d94f29e9d607e42a6b1ec6ac50237d762 all runs: boot failed: can't ssh into the instance testing release v4.9 testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 compiler: gcc version 5.5.0 (GCC) kernel signature: 24d7295f0c355d0e69672166929624917cc9a7da6f73ed79fb19025ec62d3949 all runs: boot failed: can't ssh into the instance testing release v4.8 testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 compiler: gcc version 5.5.0 (GCC) kernel signature: 46cd2f9e8dcac8843e5e1a965b99dada0c627dd8f6be26544fc90544627cb85c all runs: boot failed: can't ssh into the instance testing release v4.7 testing commit 523d939ef98fd712632d93a5a2b588e477a7565e compiler: gcc version 5.5.0 (GCC) kernel signature: a720805b820b509c456c3a12f35bb425d8728f1f92a36fd82e9585743af1433b all runs: boot failed: can't ssh into the instance testing release v4.6 testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a compiler: gcc version 5.5.0 (GCC) kernel signature: 2d54ee2d323bef628d9f45992724a89ab3b791e61a8f3dd76726fb61889baab3 all runs: boot failed: can't ssh into the instance revisions tested: 35, total time: 7h22m13.244497757s (build: 4h8m33.134429045s, test: 3h7m2.350736195s) the crash already happened on the oldest tested release commit msg: Linux 5.11 crash: possible deadlock in kill_fasync ======================================================== WARNING: possible irq lock inversion dependency detected 5.11.0-syzkaller #0 Not tainted -------------------------------------------------------- syz-executor.0/5891 just changed the state of lock: ffff8880135ae0c0 (&new->fa_lock){.+..}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:1004 [inline] ffff8880135ae0c0 (&new->fa_lock){.+..}-{2:2}, at: kill_fasync fs/fcntl.c:1025 [inline] ffff8880135ae0c0 (&new->fa_lock){.+..}-{2:2}, at: kill_fasync+0xec/0x310 fs/fcntl.c:1018 but this lock was taken by another, HARDIRQ-safe lock in the past: (&timer->lock){-.-.}-{2:2} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&new->fa_lock); local_irq_disable(); lock(&timer->lock); lock(&new->fa_lock); lock(&timer->lock); *** DEADLOCK *** 3 locks held by syz-executor.0/5891: #0: ffffffff8a76ac00 (rcu_read_lock){....}-{1:2}, at: sk_tx_queue_clear include/net/sock.h:1824 [inline] #0: ffffffff8a76ac00 (rcu_read_lock){....}-{1:2}, at: sk_dst_set include/net/sock.h:1992 [inline] #0: ffffffff8a76ac00 (rcu_read_lock){....}-{1:2}, at: sk_dst_reset include/net/sock.h:2007 [inline] #0: ffffffff8a76ac00 (rcu_read_lock){....}-{1:2}, at: sock_def_readable+0x0/0x340 net/core/sock.c:550 #1: ffffffff8a76ac00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_release include/linux/rcupdate.h:264 [inline] #1: ffffffff8a76ac00 (rcu_read_lock){....}-{1:2}, at: rcu_read_unlock include/linux/rcupdate.h:702 [inline] #1: ffffffff8a76ac00 (rcu_read_lock){....}-{1:2}, at: sock_def_readable+0x134/0x340 net/core/sock.c:2905 #2: ffffffff8a76ac00 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x36/0x310 fs/fcntl.c:1023 the shortest dependencies between 2nd lock and 1st lock: -> (&timer->lock){-.-.}-{2:2} { IN-HARDIRQ-W at: lock_acquire kernel/locking/lockdep.c:5442 [inline] lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:354 [inline] snd_hrtimer_callback+0x4a/0x380 sound/core/hrtimer.c:38 __run_hrtimer kernel/time/hrtimer.c:1519 [inline] __hrtimer_run_queues+0x4d7/0xb00 kernel/time/hrtimer.c:1583 hrtimer_interrupt+0x300/0x930 kernel/time/hrtimer.c:1645 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline] __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106 asm_call_irq_on_stack+0xf/0x20 __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline] run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline] sysvec_apic_timer_interrupt+0xbd/0x100 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629 native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline] arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irqrestore+0x25/0x50 kernel/locking/spinlock.c:191 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline] snd_seq_client_use_ptr+0x5a/0x380 sound/core/seq/seq_clientmgr.c:163 snd_seq_dispatch_event+0xa6/0x4f0 sound/core/seq/seq_clientmgr.c:861 snd_seq_check_queue+0x158/0x380 sound/core/seq/seq_queue.c:264 snd_seq_enqueue_event+0x17e/0x380 sound/core/seq/seq_queue.c:333 snd_seq_client_enqueue_event.constprop.0+0x1b0/0x3c0 sound/core/seq/seq_clientmgr.c:973 snd_seq_kernel_client_enqueue+0x12d/0x180 sound/core/seq/seq_clientmgr.c:2281 insert_queue sound/core/seq/oss/seq_oss_rw.c:173 [inline] snd_seq_oss_write+0x474/0x650 sound/core/seq/oss/seq_oss_rw.c:135 odev_write+0x37/0x70 sound/core/seq/oss/seq_oss.c:164 vfs_write+0x1c4/0x870 fs/read_write.c:603 ksys_write+0xf4/0x1d0 fs/read_write.c:658 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 IN-SOFTIRQ-W at: lock_acquire kernel/locking/lockdep.c:5442 [inline] lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:354 [inline] snd_hrtimer_callback+0x4a/0x380 sound/core/hrtimer.c:38 __run_hrtimer kernel/time/hrtimer.c:1519 [inline] __hrtimer_run_queues+0x4d7/0xb00 kernel/time/hrtimer.c:1583 hrtimer_interrupt+0x300/0x930 kernel/time/hrtimer.c:1645 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline] __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106 asm_call_irq_on_stack+0xf/0x20 __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline] run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline] sysvec_apic_timer_interrupt+0xbd/0x100 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629 native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline] arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irqrestore+0x25/0x50 kernel/locking/spinlock.c:191 __debug_check_no_obj_freed lib/debugobjects.c:997 [inline] debug_check_no_obj_freed+0x20c/0x420 lib/debugobjects.c:1018 slab_free_hook mm/slub.c:1539 [inline] slab_free_freelist_hook+0x107/0x150 mm/slub.c:1580 slab_free mm/slub.c:3143 [inline] kfree+0xdb/0x3b0 mm/slub.c:4139 rcu_do_batch kernel/rcu/tree.c:2489 [inline] rcu_core+0x5eb/0xf00 kernel/rcu/tree.c:2723 __do_softirq+0x29b/0x9f6 kernel/softirq.c:343 run_ksoftirqd kernel/softirq.c:650 [inline] run_ksoftirqd+0x2d/0x50 kernel/softirq.c:642 smpboot_thread_fn+0x561/0x8e0 kernel/smpboot.c:165 kthread+0x36f/0x450 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5442 [inline] lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159 snd_timer_notify sound/core/timer.c:1086 [inline] snd_timer_notify+0xcc/0x320 sound/core/timer.c:1073 snd_pcm_timer_notify sound/core/pcm_native.c:581 [inline] snd_pcm_post_stop+0x1a0/0x210 sound/core/pcm_native.c:1436 snd_pcm_action_single sound/core/pcm_native.c:1214 [inline] snd_pcm_action+0x10c/0x140 sound/core/pcm_native.c:1295 snd_pcm_stop sound/core/pcm_native.c:1460 [inline] snd_pcm_drop+0x165/0x290 sound/core/pcm_native.c:2138 snd_pcm_oss_sync+0x1ed/0x730 sound/core/oss/pcm_oss.c:1717 snd_pcm_oss_release+0x21f/0x2b0 sound/core/oss/pcm_oss.c:2556 __fput+0x204/0x870 fs/file_table.c:280 task_work_run+0xc0/0x160 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x249/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 } ... key at: [] __key.12+0x0/0x40 ... acquired at: __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1004 [inline] kill_fasync fs/fcntl.c:1025 [inline] kill_fasync+0xec/0x310 fs/fcntl.c:1018 snd_timer_user_ccallback+0x24d/0x300 sound/core/timer.c:1386 snd_timer_notify1+0x119/0x330 sound/core/timer.c:516 snd_timer_start1+0x3dd/0x6f0 sound/core/timer.c:577 snd_timer_start sound/core/timer.c:696 [inline] snd_timer_start sound/core/timer.c:689 [inline] snd_timer_user_start.isra.0+0x16d/0x1e0 sound/core/timer.c:1984 __snd_timer_user_ioctl.isra.0+0xb0b/0x1fc0 sound/core/timer.c:2107 snd_timer_user_ioctl+0x72/0xa0 sound/core/timer.c:2128 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x11f/0x190 fs/ioctl.c:739 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 -> (&new->fa_lock){.+..}-{2:2} { HARDIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5442 [inline] lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1004 [inline] kill_fasync fs/fcntl.c:1025 [inline] kill_fasync+0xec/0x310 fs/fcntl.c:1018 sock_wake_async+0xce/0x110 net/socket.c:1310 sk_wake_async include/net/sock.h:2286 [inline] sk_wake_async include/net/sock.h:2282 [inline] sock_def_readable+0x1cc/0x340 net/core/sock.c:2904 unix_dgram_sendmsg+0xcad/0x1710 net/unix/af_unix.c:1799 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xab/0xe0 net/socket.c:672 ____sys_sendmsg+0x392/0x7a0 net/socket.c:2345 ___sys_sendmsg+0xd3/0x150 net/socket.c:2399 __sys_sendmmsg+0x141/0x300 net/socket.c:2489 __do_sys_sendmmsg net/socket.c:2518 [inline] __se_sys_sendmmsg net/socket.c:2515 [inline] __x64_sys_sendmmsg+0x94/0x100 net/socket.c:2515 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5442 [inline] lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1004 [inline] kill_fasync fs/fcntl.c:1025 [inline] kill_fasync+0xec/0x310 fs/fcntl.c:1018 snd_timer_user_ccallback+0x24d/0x300 sound/core/timer.c:1386 snd_timer_notify1+0x119/0x330 sound/core/timer.c:516 snd_timer_start1+0x3dd/0x6f0 sound/core/timer.c:577 snd_timer_start sound/core/timer.c:696 [inline] snd_timer_start sound/core/timer.c:689 [inline] snd_timer_user_start.isra.0+0x16d/0x1e0 sound/core/timer.c:1984 __snd_timer_user_ioctl.isra.0+0xb0b/0x1fc0 sound/core/timer.c:2107 snd_timer_user_ioctl+0x72/0xa0 sound/core/timer.c:2128 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x11f/0x190 fs/ioctl.c:739 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 } ... key at: [] __key.0+0x0/0x40 ... acquired at: mark_usage kernel/locking/lockdep.c:4312 [inline] __lock_acquire+0x11cb/0x57d0 kernel/locking/lockdep.c:4786 lock_acquire kernel/locking/lockdep.c:5442 [inline] lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1004 [inline] kill_fasync fs/fcntl.c:1025 [inline] kill_fasync+0xec/0x310 fs/fcntl.c:1018 sock_wake_async+0xce/0x110 net/socket.c:1310 sk_wake_async include/net/sock.h:2286 [inline] sk_wake_async include/net/sock.h:2282 [inline] sock_def_readable+0x1cc/0x340 net/core/sock.c:2904 unix_dgram_sendmsg+0xcad/0x1710 net/unix/af_unix.c:1799 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xab/0xe0 net/socket.c:672 ____sys_sendmsg+0x392/0x7a0 net/socket.c:2345 ___sys_sendmsg+0xd3/0x150 net/socket.c:2399 __sys_sendmmsg+0x141/0x300 net/socket.c:2489 __do_sys_sendmmsg net/socket.c:2518 [inline] __se_sys_sendmmsg net/socket.c:2515 [inline] __x64_sys_sendmmsg+0x94/0x100 net/socket.c:2515 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 stack backtrace: CPU: 1 PID: 5891 Comm: syz-executor.0 Not tainted 5.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x9a/0xcc lib/dump_stack.c:120 print_irq_inversion_bug kernel/locking/lockdep.c:4413 [inline] check_usage_backwards kernel/locking/lockdep.c:3884 [inline] mark_lock_irq kernel/locking/lockdep.c:3974 [inline] mark_lock.cold+0x6d/0x72 kernel/locking/lockdep.c:4411 mark_usage kernel/locking/lockdep.c:4312 [inline] __lock_acquire+0x11cb/0x57d0 kernel/locking/lockdep.c:4786 lock_acquire kernel/locking/lockdep.c:5442 [inline] lock_acquire+0x1a8/0x720 kernel/locking/lockdep.c:5407 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1004 [inline] kill_fasync fs/fcntl.c:1025 [inline] kill_fasync+0xec/0x310 fs/fcntl.c:1018 sock_wake_async+0xce/0x110 net/socket.c:1310 sk_wake_async include/net/sock.h:2286 [inline] sk_wake_async include/net/sock.h:2282 [inline] sock_def_readable+0x1cc/0x340 net/core/sock.c:2904 unix_dgram_sendmsg+0xcad/0x1710 net/unix/af_unix.c:1799 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xab/0xe0 net/socket.c:672 ____sys_sendmsg+0x392/0x7a0 net/socket.c:2345 ___sys_sendmsg+0xd3/0x150 net/socket.c:2399 __sys_sendmmsg+0x141/0x300 net/socket.c:2489 __do_sys_sendmmsg net/socket.c:2518 [inline] __se_sys_sendmmsg net/socket.c:2515 [inline] __x64_sys_sendmmsg+0x94/0x100 net/socket.c:2515 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7efec9538109 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007efec8cad168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007efec964af60 RCX: 00007efec9538109 RDX: 0307017fdb7a66cb RSI: 0000000020002dc0 RDI: 0000000000000006 RBP: 00007efec959205d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000003ec0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff55f0785f R14: 00007efec8cad300 R15: 0000000000022000