bisecting cause commit starting from 6498f6151825f1e5aac5543fa9ea4ea218dcbe8c building syzkaller on 4d1b57d4d1aa7f8938163f8debd9293c062482b0 testing commit 6498f6151825f1e5aac5543fa9ea4ea218dcbe8c compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 9247357dc15b09929f47e60163cd4e90003ae3bfab1710846f30f0eef5db860d run #0: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #1: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #2: crashed: INFO: task hung in flush_to_ldisc run #3: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #4: crashed: INFO: task hung in flush_to_ldisc run #5: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #6: crashed: BUG: sleeping function called from invalid context in lock_sock_nested 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-executor568149768" "root@10.128.0.210:./syz-executor568149768"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.0.210 port 22 timed out lost connection run #8: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #9: crashed: INFO: task hung in flush_to_ldisc run #10: crashed: INFO: task hung in flush_to_ldisc run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK testing release v5.13 testing commit 62fb9874f5da54fdb243003b386128037319b219 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 909f5b513362d755e99068620c19525cb2afd91ca8725228219fd46574a48866 run #0: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #1: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #2: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK reproducer seems to be flaky testing release v5.12 testing commit 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: bb4e26dd8f4a005b0fd76547575ef29621d4d502b5251ddaf0a5696974104629 run #0: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor597841403" "root@10.128.0.66:./syz-executor597841403"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.0.66 port 22 timed out lost connection run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor545882855" "root@10.128.10.3:./syz-executor545882855"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.10.3 port 22 timed out lost connection run #2: crashed: INFO: task hung in set_selection_user run #3: crashed: INFO: task hung in flush_to_ldisc run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK testing release v5.11 testing commit f40ddce88593482919761f74910f42f4b84c004b compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 3222e6ed80513dd888ba5df1ed0bb0fed90b38311471a07f8ebfef14f678fd42 run #0: crashed: INFO: task hung in set_selection_user run #1: crashed: INFO: task hung in flush_to_ldisc run #2: crashed: INFO: task hung in flush_to_ldisc run #3: crashed: INFO: task hung in flush_to_ldisc 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-executor123898629" "root@10.128.1.112:./syz-executor123898629"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.1.112 port 22 timed out lost connection run #5: crashed: INFO: task hung in set_selection_user run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK testing release v5.10 testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 35c88fb67e0626f0232c5254d6e9f188ff33bdc5ecf75a2e20b39b0354577e82 run #0: crashed: INFO: task hung in flush_to_ldisc run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor126655787" "root@10.128.1.125:./syz-executor126655787"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.1.125 port 22 timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor041955481" "root@10.128.10.1:./syz-executor041955481"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.10.1 port 22 timed out lost connection run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK testing release v5.9 testing commit bbf5c979011a099af5dc76498918ed7df445635b compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 4753fc6113ccf19b73886623e431f1d42203e5df7900561c23ce4babeaf8f756 run #0: crashed: INFO: task hung in flush_to_ldisc run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 64bef9c619e4f9660afe7c971d6b25d7fe2654ae1e3be1137534ef774e1b1619 run #0: crashed: INFO: task hung in paste_selection run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor265081744" "root@10.128.1.72:./syz-executor265081744"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.1.72 port 22 timed out lost connection run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: f76fe31c01316385978519b5b4e89add706a0c3d5fe63afc28097ce825bd70af run #0: crashed: INFO: task hung in flush_to_ldisc run #1: crashed: INFO: task hung in set_selection_kernel run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: ce1c40f29ea7dac1ab1efcb8a4c28e91d707e6db2dd3c7ba2f4d3ff05339b929 run #0: crashed: INFO: task hung in flush_to_ldisc run #1: crashed: INFO: task hung in set_selection_kernel 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-executor110607995" "root@10.128.1.3:./syz-executor110607995"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.1.3 port 22 timed out lost connection run #3: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #4: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #5: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #6: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #7: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #8: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #9: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #10: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #11: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #12: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #13: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #14: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #15: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #16: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #17: crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! run #18: OK run #19: OK testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 52e3d19b3dd1254ec0fc70d5e850d8b373790b6a1ce2b4832bb7a2a2d3945561 run #0: crashed: INFO: task hung in flush_to_ldisc run #1: crashed: INFO: task hung in flush_to_ldisc run #2: crashed: INFO: task hung in flush_to_ldisc run #3: crashed: INFO: task hung in flush_to_ldisc run #4: crashed: INFO: task hung in flush_to_ldisc run #5: crashed: INFO: task hung in flush_to_ldisc run #6: crashed: INFO: task hung in flush_to_ldisc run #7: crashed: INFO: task hung in flush_to_ldisc run #8: crashed: INFO: task hung in flush_to_ldisc run #9: crashed: INFO: task hung in paste_selection run #10: crashed: INFO: task hung in flush_to_ldisc run #11: crashed: INFO: task hung in flush_to_ldisc run #12: crashed: INFO: task hung in flush_to_ldisc run #13: crashed: INFO: task hung in flush_to_ldisc run #14: crashed: INFO: task hung in flush_to_ldisc run #15: crashed: INFO: task hung in flush_to_ldisc run #16: crashed: INFO: task hung in flush_to_ldisc run #17: crashed: INFO: task hung in flush_to_ldisc run #18: crashed: INFO: task hung in flush_to_ldisc run #19: crashed: INFO: task hung in flush_to_ldisc testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: aaf25273084462a2ad615141adb1da70de0e843313526173854dc50400e6d06c run #0: crashed: INFO: task hung in flush_to_ldisc run #1: crashed: INFO: task hung in flush_to_ldisc run #2: crashed: INFO: task hung in flush_to_ldisc run #3: crashed: INFO: task hung in paste_selection run #4: crashed: INFO: task hung in flush_to_ldisc run #5: crashed: INFO: task hung in flush_to_ldisc run #6: crashed: INFO: task hung in flush_to_ldisc run #7: crashed: INFO: task hung in flush_to_ldisc run #8: crashed: INFO: task hung in flush_to_ldisc run #9: crashed: INFO: task hung in paste_selection run #10: crashed: INFO: task hung in flush_to_ldisc run #11: crashed: INFO: task hung in flush_to_ldisc run #12: crashed: INFO: task hung in flush_to_ldisc run #13: crashed: INFO: task hung in flush_to_ldisc run #14: crashed: INFO: task hung in flush_to_ldisc run #15: crashed: INFO: task hung in flush_to_ldisc run #16: crashed: INFO: task hung in flush_to_ldisc run #17: crashed: INFO: task hung in flush_to_ldisc run #18: crashed: INFO: task hung in flush_to_ldisc run #19: crashed: INFO: task hung in flush_to_ldisc testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 6a118b86ece6a00ec309dfe958551a7e37b62c5a38c74bfffbdf71d5ff2118cf run #0: crashed: INFO: task hung in paste_selection run #1: crashed: INFO: task hung in paste_selection run #2: crashed: INFO: task hung in flush_to_ldisc run #3: crashed: INFO: task hung in paste_selection run #4: crashed: INFO: task hung in flush_to_ldisc run #5: crashed: INFO: task hung in paste_selection run #6: crashed: INFO: task hung in flush_to_ldisc run #7: crashed: INFO: task hung in paste_selection run #8: crashed: INFO: task hung in paste_selection run #9: crashed: INFO: task hung in flush_to_ldisc run #10: crashed: INFO: task hung in flush_to_ldisc run #11: crashed: INFO: task hung in paste_selection run #12: crashed: INFO: task hung in flush_to_ldisc run #13: crashed: INFO: task hung in flush_to_ldisc run #14: crashed: INFO: task hung in flush_to_ldisc run #15: crashed: INFO: task hung in flush_to_ldisc run #16: crashed: INFO: task hung in paste_selection run #17: crashed: INFO: task hung in paste_selection run #18: crashed: INFO: task hung in paste_selection run #19: crashed: INFO: task hung in paste_selection testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: dc0a4e06aabc5a71b7bb3c51a117c73e328564b4a4f21cfd43ea9747d8ce137d run #0: crashed: INFO: task hung in flush_to_ldisc run #1: crashed: INFO: task hung in flush_to_ldisc run #2: crashed: INFO: task hung in flush_to_ldisc run #3: crashed: INFO: task hung in flush_to_ldisc run #4: crashed: INFO: task hung in flush_to_ldisc run #5: crashed: INFO: task hung in flush_to_ldisc run #6: crashed: INFO: task hung in flush_to_ldisc run #7: crashed: INFO: task hung in flush_to_ldisc run #8: crashed: INFO: task hung in flush_to_ldisc run #9: crashed: INFO: task hung in flush_to_ldisc run #10: crashed: INFO: task hung in flush_to_ldisc run #11: crashed: INFO: task hung in flush_to_ldisc run #12: crashed: INFO: task hung in paste_selection run #13: crashed: INFO: task hung in flush_to_ldisc run #14: crashed: INFO: task hung in paste_selection run #15: crashed: INFO: task hung in flush_to_ldisc run #16: crashed: INFO: task hung in flush_to_ldisc run #17: crashed: INFO: task hung in flush_to_ldisc run #18: crashed: INFO: task hung in flush_to_ldisc run #19: crashed: INFO: task hung in flush_to_ldisc testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 6f28a54ae9631f7a38ae82812fc557e8efc8855fdd74a27360b3ac8c36083bee run #0: crashed: INFO: task hung in flush_to_ldisc run #1: crashed: INFO: task hung in flush_to_ldisc run #2: crashed: INFO: task hung in flush_to_ldisc run #3: crashed: INFO: task hung in flush_to_ldisc run #4: crashed: INFO: task hung in flush_to_ldisc run #5: crashed: INFO: task hung in flush_to_ldisc run #6: crashed: INFO: task hung in flush_to_ldisc run #7: crashed: INFO: task hung in flush_to_ldisc run #8: crashed: INFO: task hung in paste_selection run #9: crashed: INFO: task hung in flush_to_ldisc run #10: crashed: INFO: task hung in flush_to_ldisc run #11: crashed: INFO: task hung in flush_to_ldisc run #12: crashed: INFO: task hung in flush_to_ldisc run #13: crashed: INFO: task hung in paste_selection run #14: crashed: INFO: task hung in flush_to_ldisc run #15: crashed: INFO: task hung in flush_to_ldisc run #16: crashed: INFO: task hung in flush_to_ldisc run #17: crashed: INFO: task hung in flush_to_ldisc run #18: crashed: INFO: task hung in flush_to_ldisc run #19: crashed: INFO: task hung in flush_to_ldisc testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: cc4af3f53694d3fa6e61b52de0e00edfb6449f3b5e2c0a6ea7e7eb72c3e13ece run #0: crashed: INFO: task hung in flush_to_ldisc run #1: crashed: INFO: task hung in paste_selection run #2: crashed: INFO: task hung in flush_to_ldisc run #3: crashed: INFO: task hung in paste_selection run #4: crashed: INFO: task hung in flush_to_ldisc run #5: crashed: INFO: task hung in paste_selection run #6: crashed: INFO: task hung in flush_to_ldisc run #7: crashed: INFO: task hung in paste_selection run #8: crashed: INFO: task hung in paste_selection run #9: crashed: INFO: task hung in paste_selection run #10: crashed: INFO: task hung in flush_to_ldisc run #11: crashed: INFO: task hung in paste_selection run #12: crashed: INFO: task hung in paste_selection run #13: crashed: INFO: task hung in paste_selection run #14: crashed: INFO: task hung in flush_to_ldisc run #15: crashed: INFO: task hung in paste_selection run #16: crashed: INFO: task hung in flush_to_ldisc run #17: crashed: INFO: task hung in flush_to_ldisc run #18: crashed: INFO: task hung in flush_to_ldisc run #19: crashed: INFO: task hung in paste_selection testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: f425198a547c3b0cccab5f73add160ad9f634369ee2498732b71ba790bb6332c run #0: crashed: INFO: task hung in paste_selection run #1: crashed: INFO: task hung in flush_to_ldisc run #2: crashed: INFO: task hung in flush_to_ldisc run #3: crashed: INFO: task hung in flush_to_ldisc run #4: crashed: INFO: task hung in flush_to_ldisc run #5: crashed: INFO: task hung in flush_to_ldisc run #6: crashed: INFO: task hung in flush_to_ldisc run #7: crashed: INFO: task hung in paste_selection run #8: crashed: INFO: task hung in flush_to_ldisc run #9: crashed: INFO: task hung in flush_to_ldisc run #10: crashed: INFO: task hung in paste_selection run #11: crashed: INFO: task hung in paste_selection run #12: crashed: INFO: task hung in flush_to_ldisc run #13: crashed: INFO: task hung in flush_to_ldisc run #14: crashed: INFO: task hung in paste_selection run #15: crashed: INFO: task hung in flush_to_ldisc run #16: crashed: INFO: task hung in flush_to_ldisc run #17: crashed: INFO: task hung in flush_to_ldisc run #18: crashed: INFO: task hung in flush_to_ldisc run #19: crashed: INFO: task hung in flush_to_ldisc testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 4b3a8b04099c9e802c0a69767e0430e9d323ea1b0803172e5b3fb9ce5fa6d682 run #0: crashed: INFO: task hung in flush_to_ldisc run #1: crashed: INFO: task hung in flush_to_ldisc run #2: crashed: INFO: task hung in flush_to_ldisc run #3: crashed: INFO: task hung in paste_selection run #4: crashed: INFO: task hung in flush_to_ldisc run #5: crashed: INFO: task hung in paste_selection run #6: crashed: INFO: task hung in flush_to_ldisc run #7: crashed: INFO: task hung in paste_selection run #8: crashed: INFO: task hung in flush_to_ldisc run #9: crashed: INFO: task hung in flush_to_ldisc run #10: crashed: INFO: task hung in flush_to_ldisc run #11: crashed: INFO: task hung in flush_to_ldisc run #12: crashed: INFO: task hung in paste_selection run #13: crashed: INFO: task hung in flush_to_ldisc run #14: crashed: INFO: task hung in flush_to_ldisc run #15: crashed: INFO: task hung in flush_to_ldisc run #16: crashed: INFO: task hung in flush_to_ldisc run #17: crashed: INFO: task hung in flush_to_ldisc run #18: crashed: INFO: task hung in flush_to_ldisc run #19: crashed: INFO: task hung in flush_to_ldisc testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 64e78c264d57c109343a95f3689c4ee81d421752f16248d2a72a3eba11eb35fc run #0: crashed: INFO: task hung in flush_to_ldisc run #1: crashed: INFO: task hung in flush_to_ldisc run #2: crashed: INFO: task hung in flush_to_ldisc run #3: crashed: INFO: task hung in flush_to_ldisc run #4: crashed: INFO: task hung in flush_to_ldisc run #5: crashed: INFO: task hung in flush_to_ldisc run #6: crashed: INFO: task hung in flush_to_ldisc run #7: crashed: INFO: task hung in paste_selection run #8: crashed: INFO: task hung in flush_to_ldisc run #9: crashed: INFO: task hung in flush_to_ldisc run #10: crashed: INFO: task hung in flush_to_ldisc run #11: crashed: INFO: task hung in paste_selection run #12: crashed: INFO: task hung in flush_to_ldisc run #13: crashed: INFO: task hung in flush_to_ldisc run #14: crashed: INFO: task hung in flush_to_ldisc run #15: crashed: INFO: task hung in flush_to_ldisc run #16: crashed: INFO: task hung in paste_selection run #17: crashed: INFO: task hung in flush_to_ldisc run #18: crashed: INFO: task hung in flush_to_ldisc run #19: crashed: INFO: task hung in flush_to_ldisc testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 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 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 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 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] pager.c:36:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] elf.c:139:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] testing release v4.13 testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 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 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 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 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 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 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 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 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: 18, total time: 4h43m23.158668069s (build: 1h56m34.195993831s, test: 2h41m50.070202743s) the crash already happened on the oldest tested release commit msg: Linux 4.18 crash: INFO: task hung in flush_to_ldisc Bluetooth: hci1: command 0x0406 tx timeout Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci5: command 0x0406 tx timeout INFO: task kworker/u4:2:164 blocked for more than 140 seconds. Not tainted 4.18.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:2 D27392 164 2 0x80080000 Workqueue: events_unbound flush_to_ldisc 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_preempt_disabled+0x13/0x20 kernel/sched/core.c:3603 __mutex_lock_common kernel/locking/mutex.c:834 [inline] __mutex_lock+0x58a/0x1300 kernel/locking/mutex.c:894 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:909 flush_to_ldisc+0x3f/0x370 drivers/tty/tty_buffer.c:496 process_one_work+0x7b9/0x1580 kernel/workqueue.c:2153 worker_thread+0x85/0xb60 kernel/workqueue.c:2296 kthread+0x316/0x3d0 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:412 INFO: task syz-executor.5:10044 blocked for more than 140 seconds. Not tainted 4.18.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D27944 10044 10043 0x00080004 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_preempt_disabled+0x13/0x20 kernel/sched/core.c:3603 __mutex_lock_common kernel/locking/mutex.c:834 [inline] __mutex_lock+0x58a/0x1300 kernel/locking/mutex.c:894 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:909 tty_buffer_lock_exclusive+0x2b/0x30 drivers/tty/tty_buffer.c:61 paste_selection+0x113/0x3e0 drivers/tty/vt/selection.c:338 tioclinux+0x10b/0x390 drivers/tty/vt/vt.c:2693 vt_ioctl+0x187a/0x2120 drivers/tty/vt/vt_ioctl.c:362 tty_ioctl+0x456/0x1280 drivers/tty/tty_io.c:2655 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x196/0x1050 fs/ioctl.c:684 ksys_ioctl+0x62/0x90 fs/ioctl.c:701 __do_sys_ioctl fs/ioctl.c:708 [inline] __se_sys_ioctl fs/ioctl.c:706 [inline] __x64_sys_ioctl+0x6e/0xb0 fs/ioctl.c:706 do_syscall_64+0xda/0x540 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665e9 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:00007f03c3cf5188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000020000000 RSI: 000000000000541c RDI: 0000000000000006 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe033f57cf R14: 00007f03c3cf5300 R15: 0000000000022000 INFO: task syz-executor.2:10120 blocked for more than 140 seconds. Not tainted 4.18.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27944 10120 8576 0x00080004 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+0x70e/0xd20 kernel/time/timer.c:1777 down_read_failed drivers/tty/tty_ldsem.c:240 [inline] __ldsem_down_read_nested+0x2c3/0x5e0 drivers/tty/tty_ldsem.c:330 ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:263 paste_selection+0xf1/0x3e0 drivers/tty/vt/selection.c:335 tioclinux+0x10b/0x390 drivers/tty/vt/vt.c:2693 vt_ioctl+0x187a/0x2120 drivers/tty/vt/vt_ioctl.c:362 tty_ioctl+0x456/0x1280 drivers/tty/tty_io.c:2655 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x196/0x1050 fs/ioctl.c:684 ksys_ioctl+0x62/0x90 fs/ioctl.c:701 __do_sys_ioctl fs/ioctl.c:708 [inline] __se_sys_ioctl fs/ioctl.c:706 [inline] __x64_sys_ioctl+0x6e/0xb0 fs/ioctl.c:706 do_syscall_64+0xda/0x540 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665e9 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:00007febcabbd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000020000000 RSI: 000000000000541c RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe90ef36cf R14: 00007febcabbd300 R15: 0000000000022000 INFO: task syz-executor.3:10136 blocked for more than 140 seconds. Not tainted 4.18.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D27944 10136 10135 0x00080004 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_preempt_disabled+0x13/0x20 kernel/sched/core.c:3603 __mutex_lock_common kernel/locking/mutex.c:834 [inline] __mutex_lock+0x58a/0x1300 kernel/locking/mutex.c:894 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:909 tty_buffer_lock_exclusive+0x2b/0x30 drivers/tty/tty_buffer.c:61 paste_selection+0x113/0x3e0 drivers/tty/vt/selection.c:338 tioclinux+0x10b/0x390 drivers/tty/vt/vt.c:2693 vt_ioctl+0x187a/0x2120 drivers/tty/vt/vt_ioctl.c:362 tty_ioctl+0x456/0x1280 drivers/tty/tty_io.c:2655 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x196/0x1050 fs/ioctl.c:684 ksys_ioctl+0x62/0x90 fs/ioctl.c:701 __do_sys_ioctl fs/ioctl.c:708 [inline] __se_sys_ioctl fs/ioctl.c:706 [inline] __x64_sys_ioctl+0x6e/0xb0 fs/ioctl.c:706 do_syscall_64+0xda/0x540 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665e9 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:00007f6c51295188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000020000000 RSI: 000000000000541c RDI: 0000000000000006 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffcfdbcf26f R14: 00007f6c51295300 R15: 0000000000022000 INFO: task syz-executor.0:10176 blocked for more than 140 seconds. Not tainted 4.18.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27944 10176 8577 0x00080004 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+0x70e/0xd20 kernel/time/timer.c:1777 down_read_failed drivers/tty/tty_ldsem.c:240 [inline] __ldsem_down_read_nested+0x2c3/0x5e0 drivers/tty/tty_ldsem.c:330 ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:263 paste_selection+0xf1/0x3e0 drivers/tty/vt/selection.c:335 tioclinux+0x10b/0x390 drivers/tty/vt/vt.c:2693 vt_ioctl+0x187a/0x2120 drivers/tty/vt/vt_ioctl.c:362 tty_ioctl+0x456/0x1280 drivers/tty/tty_io.c:2655 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x196/0x1050 fs/ioctl.c:684 ksys_ioctl+0x62/0x90 fs/ioctl.c:701 __do_sys_ioctl fs/ioctl.c:708 [inline] __se_sys_ioctl fs/ioctl.c:706 [inline] __x64_sys_ioctl+0x6e/0xb0 fs/ioctl.c:706 do_syscall_64+0xda/0x540 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665e9 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:00007fa0f75ba188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9 RDX: 0000000020000000 RSI: 000000000000541c RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffc08389f2f R14: 00007fa0f75ba300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by ksoftirqd/1/19: #0: 00000000c247707a (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1812 [inline] #0: 00000000c247707a (&rq->lock){-.-.}, at: __schedule+0x1f6/0x1fc0 kernel/sched/core.c:3439 3 locks held by kworker/u4:2/164: #0: 00000000fb9f528a ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0x6e8/0x1580 kernel/workqueue.c:2124 #1: 00000000e6c13756 ((work_completion)(&buf->work)){+.+.}, at: process_one_work+0x71b/0x1580 kernel/workqueue.c:2128 #2: 000000001abfddb2 (&buf->lock){+.+.}, at: flush_to_ldisc+0x3f/0x370 drivers/tty/tty_buffer.c:496 1 lock held by khungtaskd/1510: #0: 00000000ad838357 (rcu_read_lock){....}, at: debug_show_all_locks+0x5b/0x27a kernel/locking/lockdep.c:4461 1 lock held by in:imklog/7879: #0: 000000001a5b597c (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xa7/0xd0 fs/file.c:766 2 locks held by syz-executor.5/10043: 2 locks held by syz-executor.5/10044: #0: 00000000e22c83d3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000002ffb6f14 (&buf->lock){+.+.}, at: tty_buffer_lock_exclusive+0x2b/0x30 drivers/tty/tty_buffer.c:61 1 lock held by syz-executor.2/10120: #0: 00000000af485150 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 2 locks held by syz-executor.1/10123: 2 locks held by syz-executor.2/10125: 2 locks held by syz-executor.3/10135: 2 locks held by syz-executor.3/10136: #0: 0000000080536540 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000001abfddb2 (&buf->lock){+.+.}, at: tty_buffer_lock_exclusive+0x2b/0x30 drivers/tty/tty_buffer.c:61 2 locks held by syz-executor.0/10157: 1 lock held by syz-executor.0/10176: #0: 00000000ae85faa8 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 2 locks held by syz-executor.4/10165: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1510 Comm: khungtaskd Not tainted 4.18.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x15a/0x20d lib/dump_stack.c:113 nmi_cpu_backtrace.cold.0+0x13/0xb6 lib/nmi_backtrace.c:103 nmi_trigger_cpumask_backtrace+0xf6/0x11a lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:138 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:196 [inline] watchdog+0x512/0x940 kernel/hung_task.c:252 kthread+0x316/0x3d0 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:412 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 10123 Comm: syz-executor.1 Not tainted 4.18.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:paste_selection+0x186/0x3e0 drivers/tty/vt/selection.c:342 Code: 00 44 3b 3d 2c ef 60 08 0f 8d fa 00 00 00 65 48 8b 04 25 80 df 01 00 48 8d b8 50 13 00 00 48 89 fa 48 c1 ea 03 42 80 3c 2a 00 <0f> 85 de 01 00 00 48 c7 80 50 13 00 00 5a f2 83 83 49 c7 86 60 ff RSP: 0018:ffff8800a0baf830 EFLAGS: 00000246 RAX: ffff8800893ab180 RBX: ffff880088a08880 RCX: 0000000000000001 RDX: 1ffff1001127589a RSI: ffff8800a7473bb8 RDI: ffff8800893ac4d0 RBP: ffff8800a0baf950 R08: 1ffff100111411a1 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffed001114119b R13: dffffc0000000000 R14: ffff8800a0baf928 R15: 0000000000000000 FS: 00007f1cda651700(0000) GS:ffff8800ba600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8df1ec1000 CR3: 00000000a17e9000 CR4: 0000000000340ef0 Call Trace: tioclinux+0x10b/0x390 drivers/tty/vt/vt.c:2693 vt_ioctl+0x187a/0x2120 drivers/tty/vt/vt_ioctl.c:362 tty_ioctl+0x456/0x1280 drivers/tty/tty_io.c:2655 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x196/0x1050 fs/ioctl.c:684 ksys_ioctl+0x62/0x90 fs/ioctl.c:701 __do_sys_ioctl fs/ioctl.c:708 [inline] __se_sys_ioctl fs/ioctl.c:706 [inline] __x64_sys_ioctl+0x6e/0xb0 fs/ioctl.c:706 do_syscall_64+0xda/0x540 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665e9 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:00007f1cda651188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000020000000 RSI: 000000000000541c RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe81e8598f R14: 00007f1cda651300 R15: 0000000000022000