bisecting cause commit starting from e99d8a8495175df8cb8b739f8cf9b0fc9d0cd3b5 building syzkaller on bfeda1b1077c9ffe6f9597cbae4b6a5d747b4695 testing commit e99d8a8495175df8cb8b739f8cf9b0fc9d0cd3b5 with gcc (GCC) 10.2.1 20210217 kernel signature: 25de114096bf9baf94726f214b1bb4ac1788eb7143548eb3d195476947df2399 run #0: crashed: INFO: task hung in switchdev_deferred_process_work run #1: crashed: INFO: task hung in switchdev_deferred_process_work 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-executor553099974" "root@10.128.0.14:./syz-executor553099974"]: exit status 1 ssh: connect to host 10.128.0.14 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor407426413" "root@10.128.10.9:./syz-executor407426413"]: exit status 1 ssh: connect to host 10.128.10.9 port 22: Connection timed out lost connection run #4: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor257432552" "root@10.128.10.5:./syz-executor257432552"]: exit status 1 ssh: connect to host 10.128.10.5 port 22: Connection timed out lost connection run #5: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor548901927" "root@10.128.10.6:./syz-executor548901927"]: exit status 1 ssh: connect to host 10.128.10.6 port 22: Connection timed out lost connection run #6: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor035884956" "root@10.128.10.30:./syz-executor035884956"]: exit status 1 ssh: connect to host 10.128.10.30 port 22: Connection timed out lost connection 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" "/tmp/syz-executor376298286" "root@10.128.10.13:./syz-executor376298286"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.10.13 port 22 timed out lost connection 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" "/tmp/syz-executor736830133" "root@10.128.10.15:./syz-executor736830133"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.10.15 port 22 timed out lost connection 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" "/tmp/syz-executor164490896" "root@10.128.10.16:./syz-executor164490896"]: exit status 1 ssh: connect to host 10.128.10.16 port 22: Connection timed out lost connection run #10: 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-executor395451055" "root@10.128.1.22:./syz-executor395451055"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.1.22 port 22 timed out lost connection run #11: 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-executor694021817" "root@10.128.10.20:./syz-executor694021817"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.10.20 port 22 timed out lost connection run #12: 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-executor499240275" "root@10.128.10.26:./syz-executor499240275"]: exit status 1 ssh: connect to host 10.128.10.26 port 22: Connection timed out lost connection run #13: 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-executor904784534" "root@10.128.10.28:./syz-executor904784534"]: exit status 1 ssh: connect to host 10.128.10.28 port 22: Connection timed out lost connection run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK reproducer seems to be flaky testing release v5.11 testing commit f40ddce88593482919761f74910f42f4b84c004b with gcc (GCC) 10.2.1 20210217 kernel signature: 293e6579f0d65cbda46b2d20e15f30555f6e4ea292502f9356c74a1affb84b2f run #0: crashed: WARNING in __cfg80211_ibss_joined run #1: crashed: WARNING in __cfg80211_ibss_joined 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-executor447381048" "root@10.128.0.78:./syz-executor447381048"]: exit status 1 ssh: connect to host 10.128.0.78 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor177677367" "root@10.128.1.21:./syz-executor177677367"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.1.21 port 22 timed out lost connection run #4: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor651805420" "root@10.128.10.7:./syz-executor651805420"]: exit status 1 ssh: connect to host 10.128.10.7 port 22: Connection timed out lost connection run #5: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor036954459" "root@10.128.10.9:./syz-executor036954459"]: exit status 1 ssh: connect to host 10.128.10.9 port 22: Connection timed out lost connection run #6: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor113157886" "root@10.128.10.11:./syz-executor113157886"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.10.11 port 22 timed out lost connection run #7: crashed: INFO: task hung in switchdev_deferred_process_work 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" "/tmp/syz-executor648299589" "root@10.128.10.13:./syz-executor648299589"]: exit status 1 ssh: connect to host 10.128.10.13 port 22: Connection timed out lost connection 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" "/tmp/syz-executor562698976" "root@10.128.10.18:./syz-executor562698976"]: exit status 1 ssh: connect to host 10.128.10.18 port 22: Connection timed out lost connection run #10: 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-executor907889343" "root@10.128.10.16:./syz-executor907889343"]: exit status 1 ssh: connect to host 10.128.10.16 port 22: Connection timed out lost connection run #11: 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-executor639127826" "root@10.128.10.14:./syz-executor639127826"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.10.14 port 22 timed out lost connection run #12: 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-executor873627465" "root@10.128.10.20:./syz-executor873627465"]: exit status 1 ssh: connect to host 10.128.10.20 port 22: Connection timed out lost connection run #13: 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-executor023858787" "root@10.128.0.192:./syz-executor023858787"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.0.192 port 22 timed out lost connection run #14: 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-executor207283814" "root@10.128.1.8:./syz-executor207283814"]: exit status 1 ssh: connect to host 10.128.1.8 port 22: Connection timed out lost connection run #15: 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-executor496613005" "root@10.128.10.24:./syz-executor496613005"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.10.24 port 22 timed out lost connection run #16: 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-executor859395720" "root@10.128.0.116:./syz-executor859395720"]: exit status 1 ssh: connect to host 10.128.0.116 port 22: Connection timed out lost connection run #17: OK run #18: OK run #19: OK testing release v5.10 testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 with gcc (GCC) 10.2.1 20210217 kernel signature: aa5dbcb7b6350e128566df7b79649d445731318f591bef7c95206222f351bb67 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in sys_open run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in sys_open run #7: crashed: INFO: rcu detected stall in sys_open run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in corrupted run #10: crashed: INFO: rcu detected stall in corrupted run #11: crashed: INFO: rcu detected stall in corrupted run #12: crashed: INFO: rcu detected stall in sys_open run #13: crashed: INFO: rcu detected stall in corrupted run #14: crashed: INFO: rcu detected stall in sys_open run #15: crashed: INFO: rcu detected stall in corrupted run #16: crashed: INFO: rcu detected stall in sys_open run #17: crashed: INFO: rcu detected stall in corrupted run #18: crashed: INFO: rcu detected stall in sys_open run #19: crashed: INFO: rcu detected stall in corrupted testing release v5.9 testing commit bbf5c979011a099af5dc76498918ed7df445635b with gcc (GCC) 10.2.1 20210217 kernel signature: 5c24f3f4b62492843caa7e7e852285d332e09df8819536e003a2c6149fac4abc run #0: crashed: WARNING in __cfg80211_ibss_joined run #1: crashed: WARNING in __cfg80211_ibss_joined run #2: crashed: WARNING in __cfg80211_ibss_joined run #3: crashed: WARNING in __cfg80211_ibss_joined run #4: crashed: WARNING in __cfg80211_ibss_joined run #5: crashed: WARNING in __cfg80211_ibss_joined 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" "/tmp/syz-executor954500156" "root@10.128.0.192:./syz-executor954500156"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.0.192 port 22 timed out lost connection 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" "/tmp/syz-executor587435627" "root@10.128.0.202:./syz-executor587435627"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.0.202 port 22 timed out lost connection 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" "/tmp/syz-executor290895054" "root@10.128.10.8:./syz-executor290895054"]: exit status 1 ssh: connect to host 10.128.10.8 port 22: Connection timed out lost connection 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" "/tmp/syz-executor861065520" "root@10.128.10.12:./syz-executor861065520"]: exit status 1 ssh: connect to host 10.128.10.12 port 22: Connection timed out lost connection run #10: 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-executor678484962" "root@10.128.10.14:./syz-executor678484962"]: exit status 1 ssh: connect to host 10.128.10.14 port 22: Connection timed out lost connection run #11: 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-executor226886198" "root@10.128.10.27:./syz-executor226886198"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.10.27 port 22 timed out lost connection run #12: 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-executor122793501" "root@10.128.10.30:./syz-executor122793501"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.10.30 port 22 timed out lost connection run #13: OK run #14: 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-executor710542040" "root@10.128.10.25:./syz-executor710542040"]: exit status 1 ssh: connect to host 10.128.10.25 port 22: Connection timed out lost connection run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.4.1 20210217 kernel signature: e064f1b90e3cfa434cb136ae367ce886a75f83b37d3f635477c7b19461094f39 run #0: crashed: INFO: rcu detected stall in do_sys_open run #1: crashed: INFO: rcu detected stall in do_sys_open run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in do_sys_open run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in do_sys_open run #9: crashed: INFO: rcu detected stall in corrupted run #10: crashed: INFO: rcu detected stall in corrupted run #11: crashed: INFO: rcu detected stall in corrupted run #12: crashed: INFO: rcu detected stall in do_sys_open run #13: crashed: INFO: rcu detected stall in do_sys_open run #14: crashed: INFO: rcu detected stall in do_sys_open run #15: crashed: INFO: rcu detected stall in corrupted run #16: crashed: INFO: rcu detected stall in do_sys_open run #17: crashed: INFO: rcu detected stall in do_sys_open run #18: crashed: INFO: rcu detected stall in corrupted run #19: crashed: INFO: rcu detected stall in do_sys_open testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.4.1 20210217 kernel signature: 0c3b42a2623ff57e7e764989f96f47d87aded95e87d9e48275f1a3c8bd52969b run #0: crashed: INFO: rcu detected stall in do_sys_open run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in do_sys_open run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in do_sys_open run #6: crashed: INFO: rcu detected stall in do_sys_open run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in do_sys_open run #9: crashed: INFO: rcu detected stall in do_sys_open run #10: crashed: INFO: rcu detected stall in do_sys_open run #11: crashed: INFO: rcu detected stall in corrupted run #12: 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-executor027406497" "root@10.128.1.127:./syz-executor027406497"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.1.127 port 22 timed out lost connection run #13: 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-executor339706252" "root@10.128.10.0:./syz-executor339706252"]: exit status 1 ssh: connect to host 10.128.10.0 port 22: Connection timed out lost connection run #14: 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-executor053040286" "root@10.128.10.9:./syz-executor053040286"]: exit status 1 ssh: connect to host 10.128.10.9 port 22: Connection timed out lost connection run #15: 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-executor756756325" "root@10.128.1.66:./syz-executor756756325"]: exit status 1 ssh: connect to host 10.128.1.66 port 22: Connection timed out lost connection run #16: 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-executor776802688" "root@10.128.10.13:./syz-executor776802688"]: exit status 1 ssh: connect to host 10.128.10.13 port 22: Connection timed out lost connection run #17: crashed: INFO: rcu detected stall in corrupted run #18: OK run #19: OK testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.4.1 20210217 kernel signature: d9f64012349e0d74c7c908ab911c6276e4b0f83458da87d57127cd8708aa9c37 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in do_sys_open run #5: crashed: INFO: rcu detected stall in do_sys_open run #6: crashed: INFO: rcu detected stall in do_sys_open run #7: crashed: INFO: rcu detected stall in do_sys_open run #8: crashed: INFO: rcu detected stall in do_sys_open run #9: crashed: INFO: rcu detected stall in corrupted run #10: crashed: INFO: rcu detected stall in do_sys_open run #11: crashed: INFO: rcu detected stall in corrupted run #12: crashed: INFO: rcu detected stall in corrupted run #13: crashed: INFO: rcu detected stall in do_sys_open run #14: crashed: INFO: rcu detected stall in corrupted run #15: crashed: INFO: rcu detected stall in corrupted run #16: crashed: INFO: rcu detected stall in corrupted run #17: crashed: INFO: rcu detected stall in do_sys_open run #18: crashed: INFO: rcu detected stall in do_sys_open run #19: crashed: INFO: rcu detected stall in do_sys_open testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.4.1 20210217 kernel signature: ba676d29733da0c4728588193fbc641be89b273270ae57d0f4d0c16812a703ca run #0: crashed: INFO: rcu detected stall in do_sys_open run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in do_sys_open run #5: crashed: INFO: rcu detected stall in do_sys_open run #6: crashed: INFO: rcu detected stall in do_sys_open run #7: crashed: INFO: rcu detected stall in do_sys_open run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in do_sys_open run #10: crashed: INFO: rcu detected stall in do_sys_open run #11: crashed: INFO: rcu detected stall in do_sys_open run #12: crashed: INFO: rcu detected stall in do_sys_open run #13: crashed: INFO: rcu detected stall in do_sys_open run #14: crashed: INFO: rcu detected stall in do_sys_open run #15: crashed: INFO: rcu detected stall in do_sys_open run #16: crashed: INFO: rcu detected stall in corrupted run #17: crashed: INFO: rcu detected stall in do_sys_open run #18: crashed: INFO: rcu detected stall in corrupted run #19: crashed: INFO: rcu detected stall in corrupted testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.4.1 20210217 kernel signature: 949001b74ebcba9a4ee8693b8e891d0971c58010c6cfc40dc44eae5156602299 run #0: crashed: INFO: rcu detected stall in do_sys_open run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in do_sys_open run #3: crashed: INFO: rcu detected stall in do_sys_open run #4: crashed: INFO: rcu detected stall in do_sys_open run #5: crashed: INFO: rcu detected stall in do_sys_open run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in do_sys_open run #8: crashed: INFO: rcu detected stall in do_sys_open run #9: crashed: INFO: rcu detected stall in corrupted run #10: crashed: INFO: rcu detected stall in do_sys_open run #11: crashed: INFO: rcu detected stall in corrupted run #12: crashed: INFO: rcu detected stall in do_sys_open run #13: crashed: INFO: rcu detected stall in do_sys_open run #14: crashed: INFO: rcu detected stall in corrupted run #15: crashed: INFO: rcu detected stall in do_sys_open run #16: crashed: INFO: rcu detected stall in do_sys_open run #17: crashed: INFO: rcu detected stall in do_sys_open run #18: crashed: INFO: rcu detected stall in corrupted run #19: crashed: INFO: rcu detected stall in corrupted testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.4.1 20210217 kernel signature: 27db41da572d7dda09afa86fde3174208da7993bb7e612668a1cfabfaa835453 run #0: crashed: WARNING in __cfg80211_ibss_joined run #1: crashed: WARNING in __cfg80211_ibss_joined run #2: crashed: WARNING in __cfg80211_ibss_joined run #3: crashed: WARNING in __cfg80211_ibss_joined run #4: crashed: WARNING in __cfg80211_ibss_joined run #5: crashed: WARNING in __cfg80211_ibss_joined 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" "/tmp/syz-executor258755880" "root@10.128.0.79:./syz-executor258755880"]: exit status 1 ssh: connect to host 10.128.0.79 port 22: Connection timed out lost connection 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" "/tmp/syz-executor470072474" "root@10.128.10.11:./syz-executor470072474"]: exit status 1 ssh: connect to host 10.128.10.11 port 22: Connection timed out lost connection 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" "/tmp/syz-executor681138993" "root@10.128.10.13:./syz-executor681138993"]: exit status 1 ssh: connect to host 10.128.10.13 port 22: Connection timed out lost connection 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" "/tmp/syz-executor148831964" "root@10.128.10.14:./syz-executor148831964"]: exit status 1 ssh: connect to host 10.128.10.14 port 22: Connection timed out lost connection run #10: 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-executor033682571" "root@10.128.0.97:./syz-executor033682571"]: exit status 1 ssh: connect to host 10.128.0.97 port 22: Connection timed out lost connection run #11: 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-executor200850542" "root@10.128.1.2:./syz-executor200850542"]: exit status 1 ssh: connect to host 10.128.1.2 port 22: Connection timed out lost connection run #12: 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-executor342506741" "root@10.128.10.18:./syz-executor342506741"]: exit status 1 ssh: connect to host 10.128.10.18 port 22: Connection timed out lost connection run #13: 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-executor591598032" "root@10.128.10.21:./syz-executor591598032"]: exit status 1 ssh: connect to host 10.128.10.21 port 22: Connection timed out lost connection run #14: 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-executor309863151" "root@10.128.10.22:./syz-executor309863151"]: exit status 1 ssh: connect to host 10.128.10.22 port 22: Connection timed out lost connection run #15: 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-executor670745604" "root@10.128.0.139:./syz-executor670745604"]: exit status 1 ssh: connect to host 10.128.0.139 port 22: Connection timed out lost connection run #16: OK run #17: OK run #18: OK run #19: OK testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.4.1 20210217 kernel signature: fb55f61533c1f812a87ea4d303fbacd0bee896a9e9b47b9c03fd35c7e1df8fcb run #0: crashed: INFO: rcu detected stall in new_sync_read run #1: crashed: INFO: rcu detected stall in new_sync_read run #2: crashed: INFO: rcu detected stall in new_sync_read run #3: crashed: INFO: rcu detected stall in new_sync_read run #4: crashed: INFO: rcu detected stall in new_sync_read run #5: crashed: INFO: rcu detected stall in new_sync_read run #6: crashed: INFO: rcu detected stall in new_sync_read run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in sys_open run #9: crashed: INFO: rcu detected stall in new_sync_read run #10: crashed: INFO: rcu detected stall in new_sync_read run #11: crashed: INFO: rcu detected stall in sys_open run #12: crashed: INFO: rcu detected stall in sys_open run #13: crashed: INFO: rcu detected stall in new_sync_read run #14: crashed: INFO: rcu detected stall in new_sync_read run #15: crashed: INFO: rcu detected stall in sys_open run #16: crashed: INFO: rcu detected stall in sys_open run #17: crashed: INFO: rcu detected stall in new_sync_read run #18: crashed: INFO: rcu detected stall in new_sync_read run #19: crashed: INFO: rcu detected stall in sys_open testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.4.1 20210217 kernel signature: 7ff787ec748fd4b4054fc566ed6baf33d0070560a739f8fe7451fac0d442fcdd run #0: crashed: INFO: rcu detected stall in sys_open run #1: crashed: INFO: rcu detected stall in new_sync_read run #2: crashed: INFO: rcu detected stall in new_sync_read run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in new_sync_read run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in new_sync_read run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in new_sync_read run #9: crashed: INFO: rcu detected stall in sys_open run #10: crashed: INFO: rcu detected stall in new_sync_read run #11: crashed: INFO: rcu detected stall in sys_open run #12: crashed: INFO: rcu detected stall in corrupted run #13: crashed: INFO: rcu detected stall in corrupted run #14: crashed: INFO: rcu detected stall in new_sync_read run #15: crashed: INFO: rcu detected stall in corrupted run #16: crashed: INFO: rcu detected stall in new_sync_read run #17: crashed: INFO: rcu detected stall in new_sync_read run #18: crashed: INFO: rcu detected stall in call_timer_fn run #19: crashed: INFO: rcu detected stall in sys_open testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.4.1 20210217 kernel signature: 81b3bf7f25380ba4392ce949e5929e3211138c41f890748c7daf296e91692a03 run #0: crashed: INFO: rcu detected stall in generic_file_read_iter run #1: crashed: INFO: rcu detected stall in sys_open run #2: crashed: INFO: rcu detected stall in sys_open run #3: crashed: INFO: rcu detected stall in sys_open run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in generic_file_read_iter run #6: crashed: INFO: rcu detected stall in sys_open run #7: crashed: INFO: rcu detected stall in sys_open run #8: crashed: INFO: rcu detected stall in generic_file_read_iter run #9: crashed: INFO: rcu detected stall in corrupted run #10: crashed: INFO: rcu detected stall in generic_file_read_iter run #11: crashed: INFO: rcu detected stall in sys_open run #12: crashed: INFO: rcu detected stall in sys_open run #13: crashed: INFO: rcu detected stall in generic_file_read_iter run #14: crashed: INFO: rcu detected stall in generic_file_read_iter run #15: crashed: INFO: rcu detected stall in generic_file_read_iter run #16: crashed: INFO: rcu detected stall in copy_page_to_iter run #17: crashed: INFO: rcu detected stall in sys_open run #18: crashed: INFO: rcu detected stall in generic_file_read_iter run #19: crashed: INFO: rcu detected stall in sys_open testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.4.1 20210217 kernel signature: 29b61ef4d17b61b05c7764a9e3f6368c8f3132fe22d1785ba01c88b20fcf7295 run #0: crashed: INFO: rcu detected stall in generic_file_read_iter run #1: crashed: INFO: rcu detected stall in generic_file_read_iter run #2: crashed: INFO: rcu detected stall in generic_file_read_iter run #3: crashed: INFO: rcu detected stall in sys_open run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in sys_open run #6: crashed: INFO: rcu detected stall in sys_open run #7: crashed: INFO: rcu detected stall in generic_file_read_iter run #8: crashed: INFO: rcu detected stall in generic_file_read_iter run #9: crashed: INFO: rcu detected stall in sys_open run #10: crashed: INFO: rcu detected stall in sys_open run #11: crashed: INFO: rcu detected stall in generic_file_read_iter run #12: crashed: INFO: rcu detected stall in sys_open run #13: crashed: INFO: rcu detected stall in corrupted run #14: crashed: INFO: rcu detected stall in __tasklet_hrtimer_trampoline run #15: crashed: INFO: rcu detected stall in generic_file_read_iter run #16: crashed: INFO: rcu detected stall in sys_open run #17: crashed: INFO: rcu detected stall in sys_open run #18: crashed: INFO: rcu detected stall in generic_file_read_iter run #19: crashed: INFO: rcu detected stall in generic_file_read_iter testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.4.1 20210217 kernel signature: 6b622f420a52978676425846fc177973212103178d5bb419c5bc803076340d26 run #0: crashed: INFO: rcu detected stall in sys_open run #1: crashed: INFO: rcu detected stall in sys_open run #2: crashed: INFO: rcu detected stall in generic_file_read_iter run #3: crashed: INFO: rcu detected stall in sys_open run #4: crashed: INFO: rcu detected stall in generic_file_read_iter run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in generic_file_read_iter run #7: crashed: INFO: rcu detected stall in generic_file_read_iter run #8: crashed: INFO: rcu detected stall in sys_open run #9: crashed: INFO: rcu detected stall in sys_open run #10: crashed: INFO: rcu detected stall in generic_file_read_iter run #11: crashed: INFO: rcu detected stall in generic_file_read_iter run #12: crashed: INFO: rcu detected stall in generic_file_read_iter run #13: crashed: INFO: rcu detected stall in generic_file_read_iter run #14: crashed: INFO: rcu detected stall in corrupted run #15: crashed: INFO: rcu detected stall in sys_open run #16: crashed: INFO: rcu detected stall in corrupted run #17: crashed: INFO: rcu detected stall in generic_file_read_iter run #18: crashed: INFO: rcu detected stall in corrupted run #19: crashed: INFO: rcu detected stall in generic_file_read_iter testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.4.1 20210217 kernel signature: b5d9476e54b93ec360550da16b8d31fd8b8db6e6f8bd33d8b17fb55b11f4b5fa run #0: crashed: INFO: rcu detected stall in sys_open run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in generic_file_read_iter run #5: crashed: INFO: rcu detected stall in generic_file_read_iter run #6: crashed: INFO: rcu detected stall in sys_open run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in generic_file_read_iter run #9: crashed: INFO: rcu detected stall in corrupted run #10: crashed: INFO: rcu detected stall in corrupted run #11: crashed: INFO: rcu detected stall in corrupted run #12: crashed: INFO: rcu detected stall in corrupted run #13: crashed: INFO: rcu detected stall in sys_open run #14: crashed: INFO: rcu detected stall in sys_open run #15: crashed: INFO: rcu detected stall in sys_open run #16: crashed: INFO: rcu detected stall in corrupted run #17: crashed: INFO: rcu detected stall in corrupted run #18: crashed: INFO: rcu detected stall in corrupted run #19: crashed: INFO: rcu detected stall in generic_file_read_iter testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.4.1 20210217 failed to run ["make" "-j" "64" "ARCH=x86_64" "CC=/syzkaller/shared/bisect_bin/gcc-8.1.0/bin/gcc" "bzImage"]: exit status 2 testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.4.1 20210217 orc_dump.c:106:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] orc_dump.c:111:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] elf.c:135:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:140:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.4.1 20210217 orc_dump.c:106:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] orc_dump.c:111:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] elf.c:135:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:140:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:36:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.4.1 20210217 orc_dump.c:105:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] orc_dump.c:110:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] elf.c:134:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:139:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:36:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] testing release v4.13 testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.4.1 20210217 pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] elf.c:144:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:149:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] testing release v4.12 testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.4.1 20210217 pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] elf.c:141:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:146:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] testing release v4.11 testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.5.0 elf.c:141:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:146:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] testing release v4.10 testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0 tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes] elf.c:129:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:134:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] testing release v4.9 testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0 tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes] elf.c:129:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:134:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] testing release v4.8 testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0 tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes] elf.c:129:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:134:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:33:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] testing release v4.7 testing commit 523d939ef98fd712632d93a5a2b588e477a7565e with gcc (GCC) 5.5.0 tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes] elf.c:122:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:127:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:33:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] testing release v4.6 testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a with gcc (GCC) 5.5.0 tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes] pager.c:33:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] Reproducer flagged being flaky revisions tested: 16, total time: 4h9m55.296194281s (build: 1h49m18.5664493s, test: 2h15m28.990323132s) the crash already happened on the oldest tested release commit msg: Linux 4.18 crash: INFO: rcu detected stall in generic_file_read_iter audit: type=1800 audit(1618195256.056:10): pid=10200 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op="collect_data" cause="failed" comm="syz-executor.5" name="file0" dev="loop5" ino=3 res=0 MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended INFO: rcu_preempt detected stalls on CPUs/tasks: (detected by 1, t=10502 jiffies, g=1496, c=1495, q=781) All QSes seen, last rcu_preempt kthread activity 10502 (4294958837-4294948335), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.0 R running task 23608 10213 8589 0x80080000 Call Trace: sched_show_task kernel/sched/core.c:5324 [inline] sched_show_task.cold.17+0x343/0x3a7 kernel/sched/core.c:5299 print_other_cpu_stall kernel/rcu/tree.c:1441 [inline] check_cpu_stall kernel/rcu/tree.c:1559 [inline] __rcu_pending kernel/rcu/tree.c:3244 [inline] rcu_pending kernel/rcu/tree.c:3291 [inline] rcu_check_callbacks.cold.53+0xced/0xdc6 kernel/rcu/tree.c:2646 update_process_times+0x2a/0x60 kernel/time/timer.c:1636 tick_sched_handle.isra.5+0x6b/0x130 kernel/time/tick-sched.c:164 tick_sched_timer+0x3c/0xf0 kernel/time/tick-sched.c:1274 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0x2e5/0xbb0 kernel/time/hrtimer.c:1460 hrtimer_interrupt+0x2df/0x760 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1028 [inline] smp_apic_timer_interrupt+0x100/0x5b0 arch/x86/kernel/apic/apic.c:1053 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863 RIP: 0010:memset_erms+0xb/0x10 arch/x86/lib/memset_64.S:67 Code: 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3 aa <4c> 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 01 01 RSP: 0018:ffff8800ad916b78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff8800b60fce00 RCX: 0000000000000000 RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff8801c3d4c900 RBP: ffff8800ad916b80 R08: 1ffff10016014d78 R09: ffff8801c3d4c8f0 R10: ffffed00174e454a R11: ffff8800ba722a53 R12: ffff8801c3d4c888 R13: ffff8801c3d4c000 R14: 000000000000000e R15: ffffea00070f5300 setup_object mm/slub.c:1422 [inline] allocate_slab mm/slub.c:1618 [inline] new_slab+0x1d1/0x850 mm/slub.c:1656 new_slab_objects mm/slub.c:2419 [inline] ___slab_alloc+0x609/0x940 mm/slub.c:2571 __slab_alloc.isra.22+0x78/0xe0 mm/slub.c:2611 slab_alloc_node mm/slub.c:2674 [inline] slab_alloc mm/slub.c:2716 [inline] kmem_cache_alloc+0x276/0x320 mm/slub.c:2721 kmem_cache_zalloc include/linux/slab.h:697 [inline] alloc_buffer_head+0x1d/0xe0 fs/buffer.c:3349 alloc_page_buffers+0xa8/0x1e0 fs/buffer.c:825 create_empty_buffers+0x2b/0x720 fs/buffer.c:1509 create_page_buffers+0x19b/0x310 fs/buffer.c:1626 block_read_full_page+0xd0/0xbd0 fs/buffer.c:2216 minix_readpage+0x13/0x20 fs/minix/inode.c:391 read_pages+0x2b1/0x510 mm/readahead.c:131 __do_page_cache_readahead+0x353/0x580 mm/readahead.c:209 ra_submit mm/internal.h:66 [inline] ondemand_readahead+0x42a/0xb40 mm/readahead.c:483 page_cache_async_readahead mm/readahead.c:559 [inline] page_cache_async_readahead+0x20a/0x3c0 mm/readahead.c:535 generic_file_buffered_read mm/filemap.c:2100 [inline] generic_file_read_iter+0xd7d/0x2600 mm/filemap.c:2362 call_read_iter include/linux/fs.h:1787 [inline] new_sync_read fs/read_write.c:406 [inline] __vfs_read+0x443/0x870 fs/read_write.c:418 integrity_kernel_read+0x128/0x200 security/integrity/iint.c:200 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:368 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:399 [inline] ima_calc_file_hash+0x496/0x7a0 security/integrity/ima/ima_crypto.c:442 ima_collect_measurement+0x3fc/0x520 security/integrity/ima/ima_api.c:231 process_measurement+0xb25/0x14b0 security/integrity/ima/ima_main.c:284 ima_file_check+0xcf/0x120 security/integrity/ima/ima_main.c:391 do_last fs/namei.c:3406 [inline] path_openat+0xb23/0x2290 fs/namei.c:3540 do_filp_open+0x177/0x250 fs/namei.c:3574 do_sys_open+0x1dc/0x360 fs/open.c:1101 __do_sys_open fs/open.c:1119 [inline] __se_sys_open fs/open.c:1114 [inline] __x64_sys_open+0x79/0xb0 fs/open.c:1114 do_syscall_64+0xda/0x540 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466459 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff76650c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200000c0 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffe18796adf R14: 00007ff76650c300 R15: 0000000000022000 rcu_preempt kthread starved for 10502 jiffies! g1496 c1495 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1 RCU grace-period kthread stack dump: rcu_preempt R running task 29272 10 2 0x80080000 Call Trace: context_switch kernel/sched/core.c:2853 [inline] __schedule+0x80c/0x1fc0 kernel/sched/core.c:3501 schedule+0x7f/0x1b0 kernel/sched/core.c:3545 schedule_timeout+0x398/0xd20 kernel/time/timer.c:1801 rcu_gp_kthread+0xb67/0x1f50 kernel/rcu/tree.c:2179 kthread+0x316/0x3d0 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:412