bisecting cause commit starting from c7d102232649226a69dddd58a4942cf13cff4f7c building syzkaller on 6c236867ce33c0c16b102e02a08226d7eb9b2046 testing commit c7d102232649226a69dddd58a4942cf13cff4f7c compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 5daf3cb610e6701685c9fd1449e001bae53d38cdfad8d6a2c2abe0e4af8d28ae run #0: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #1: crashed: INFO: rcu detected stall in addrconf_rs_timer run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #4: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #5: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #6: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #7: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #8: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #9: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #10: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #11: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #12: crashed: BUG: soft lockup in wg_packet_tx_worker run #13: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #14: crashed: WARNING in __cfg80211_ibss_joined run #15: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #16: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #17: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #18: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #19: crashed: INFO: rcu detected stall in wg_packet_tx_worker 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: INFO: rcu detected stall in addrconf_rs_timer run #1: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #2: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #3: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #4: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #5: crashed: BUG: soft lockup in wg_packet_tx_worker run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #8: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #9: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker 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: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #1: crashed: INFO: rcu detected stall in wg_expired_new_handshake run #2: crashed: INFO: rcu detected stall in mld_ifc_timer_expire run #3: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #4: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #5: crashed: BUG: soft lockup in wg_expired_retransmit_handshake run #6: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #9: crashed: no output from test machine 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: 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 mld_dad_timer_expire run #5: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #6: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #7: crashed: INFO: rcu detected stall in wg_expired_retransmit_handshake run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in wg_packet_tx_worker 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: 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 mld_dad_timer_expire run #4: crashed: INFO: rcu detected stall in addrconf_rs_timer run #5: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #6: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #9: crashed: INFO: rcu detected stall in wg_packet_tx_worker 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: rcu detected stall in wg_packet_handshake_send_worker 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 wg_packet_tx_worker run #4: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #5: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #6: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #9: crashed: INFO: task hung in corrupted 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: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #3: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in mld_dad_timer_expire 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: rcu detected stall in wg_packet_tx_worker run #1: crashed: INFO: rcu detected stall in mld_ifc_timer_expire run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #4: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #7: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #8: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #9: crashed: INFO: task hung in corrupted testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: ce1c40f29ea7dac1ab1efcb8a4c28e91d707e6db2dd3c7ba2f4d3ff05339b929 run #0: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #1: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #2: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #3: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #4: crashed: INFO: rcu detected stall in mld_ifc_timer_expire run #5: crashed: INFO: rcu detected stall in mld_ifc_timer_expire run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #8: crashed: BUG: workqueue lockup run #9: crashed: BUG: soft lockup in mld_dad_timer_expire testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 52e3d19b3dd1254ec0fc70d5e850d8b373790b6a1ce2b4832bb7a2a2d3945561 run #0: crashed: INFO: rcu detected stall in mld_ifc_timer_expire run #1: crashed: INFO: rcu detected stall in addrconf_rs_timer run #2: crashed: BUG: soft lockup in addrconf_rs_timer run #3: crashed: WARNING in __cfg80211_ibss_joined run #4: crashed: INFO: rcu detected stall in addrconf_rs_timer run #5: crashed: INFO: task hung in cfg80211_event_work run #6: crashed: INFO: rcu detected stall in addrconf_rs_timer run #7: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #8: crashed: INFO: rcu detected stall in mld_ifc_timer_expire 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-executor513645278" "root@10.128.0.128:./syz-executor513645278"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.0.128 port 22 timed out lost connection testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: aaf25273084462a2ad615141adb1da70de0e843313526173854dc50400e6d06c run #0: crashed: INFO: rcu detected stall in addrconf_rs_timer run #1: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #2: crashed: WARNING in __cfg80211_ibss_joined run #3: crashed: WARNING in __cfg80211_ibss_joined run #4: crashed: INFO: rcu detected stall in addrconf_rs_timer run #5: crashed: INFO: task hung in cfg80211_event_work run #6: crashed: INFO: task hung in cfg80211_event_work run #7: crashed: INFO: rcu detected stall in addrconf_rs_timer run #8: crashed: INFO: task hung in netdev_run_todo run #9: crashed: no output from test machine testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 6a118b86ece6a00ec309dfe958551a7e37b62c5a38c74bfffbdf71d5ff2118cf run #0: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #1: crashed: INFO: rcu detected stall in mld_ifc_timer_expire run #2: crashed: WARNING in __cfg80211_ibss_joined run #3: crashed: WARNING in __cfg80211_ibss_joined run #4: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #5: crashed: INFO: rcu detected stall in addrconf_dad_work run #6: crashed: INFO: rcu detected stall in addrconf_rs_timer run #7: crashed: BUG: workqueue lockup run #8: crashed: WARNING in __cfg80211_ibss_joined run #9: crashed: INFO: task hung in rtnetlink_rcv_msg testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: dc0a4e06aabc5a71b7bb3c51a117c73e328564b4a4f21cfd43ea9747d8ce137d run #0: crashed: WARNING in __cfg80211_ibss_joined run #1: crashed: WARNING in __cfg80211_ibss_joined run #2: crashed: BUG: soft lockup in addrconf_rs_timer run #3: crashed: BUG: workqueue lockup run #4: crashed: no output from test machine run #5: crashed: INFO: rcu detected stall in mld_dad_timer_expire 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-executor198127858" "root@10.128.1.125:./syz-executor198127858"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.1.125 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-executor722918313" "root@10.128.0.27:./syz-executor722918313"]: exit status 1 ssh: connect to host 10.128.0.27 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-executor221464820" "root@10.128.10.1:./syz-executor221464820"]: exit status 1 ssh: connect to host 10.128.10.1 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-executor743434179" "root@10.128.1.126:./syz-executor743434179"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.1.126 port 22 timed out lost connection testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 6f28a54ae9631f7a38ae82812fc557e8efc8855fdd74a27360b3ac8c36083bee run #0: crashed: INFO: rcu detected stall in mld_ifc_timer_expire run #1: crashed: INFO: task hung in rtnetlink_rcv_msg run #2: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #3: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #4: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #5: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #6: crashed: INFO: rcu detected stall in mld_dad_timer_expire run #7: crashed: INFO: task hung in rtnl_lock run #8: crashed: INFO: task hung in rtnl_lock run #9: crashed: INFO: rcu detected stall in mld_dad_timer_expire testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: cc4af3f53694d3fa6e61b52de0e00edfb6449f3b5e2c0a6ea7e7eb72c3e13ece run #0: crashed: BUG: soft lockup in addrconf_dad_work run #1: crashed: BUG: soft lockup in mld_ifc_timer_expire run #2: crashed: BUG: soft lockup in addrconf_dad_work run #3: crashed: BUG: soft lockup in addrconf_dad_work run #4: crashed: BUG: soft lockup in addrconf_dad_work run #5: crashed: BUG: soft lockup in addrconf_dad_work run #6: crashed: BUG: soft lockup in addrconf_dad_work run #7: crashed: BUG: soft lockup in mld_ifc_timer_expire run #8: crashed: BUG: soft lockup in addrconf_dad_work run #9: crashed: BUG: soft lockup in addrconf_dad_work testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 8693129f0bf57671d1499f807102a7405409a6ee08519b21b572a26009099cac run #0: crashed: BUG: soft lockup in addrconf_dad_work run #1: crashed: BUG: soft lockup in addrconf_dad_work run #2: crashed: BUG: soft lockup in addrconf_dad_work run #3: crashed: BUG: soft lockup in addrconf_dad_work run #4: crashed: BUG: soft lockup in addrconf_dad_work run #5: crashed: BUG: soft lockup in addrconf_dad_work run #6: crashed: BUG: soft lockup in addrconf_dad_work run #7: crashed: BUG: soft lockup in mld_ifc_timer_expire run #8: crashed: BUG: soft lockup in mld_dad_timer_expire run #9: crashed: BUG: soft lockup in addrconf_dad_work testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 431639d98f10cd0d4a43e356ada8cb43a9023bfc9066b1356b9d6bd926a61fa3 run #0: crashed: BUG: soft lockup in addrconf_dad_work run #1: crashed: BUG: soft lockup in addrconf_dad_work run #2: crashed: BUG: soft lockup in addrconf_dad_work run #3: crashed: BUG: soft lockup in mld_dad_timer_expire run #4: crashed: BUG: soft lockup in mld_dad_timer_expire run #5: crashed: BUG: soft lockup in addrconf_dad_work run #6: crashed: BUG: soft lockup in addrconf_dad_work run #7: crashed: BUG: soft lockup in mld_ifc_timer_expire run #8: crashed: BUG: soft lockup in addrconf_dad_work run #9: crashed: BUG: soft lockup in mld_ifc_timer_expire testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: e6905dc0b09053efd01cc63871e9d844658eda644b232b33bf6ae8fe5b26de69 run #0: crashed: BUG: soft lockup in mld_ifc_timer_expire run #1: crashed: BUG: soft lockup in mld_ifc_timer_expire run #2: crashed: BUG: soft lockup in addrconf_dad_work run #3: crashed: BUG: soft lockup in mld_dad_timer_expire run #4: crashed: BUG: soft lockup in addrconf_dad_work run #5: crashed: BUG: soft lockup in addrconf_dad_work run #6: crashed: BUG: soft lockup in mld_dad_timer_expire run #7: crashed: BUG: soft lockup in mld_ifc_timer_expire run #8: crashed: BUG: soft lockup in addrconf_dad_work run #9: crashed: BUG: soft lockup in addrconf_dad_work 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] 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 elf.c:144:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:149:2: 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 v4.12 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] revisions tested: 18, total time: 3h55m48.538873396s (build: 1h53m8.945718139s, test: 1h57m17.413266174s) the crash already happened on the oldest tested release commit msg: Linux 4.18 crash: BUG: soft lockup in addrconf_dad_work IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready NOHZ: local_softirq_pending 08 watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [kworker/0:0:5] Modules linked in: irq event stamp: 176515 hardirqs last enabled at (176514): [] restore_regs_and_return_to_kernel+0x0/0x2e hardirqs last disabled at (176515): [] interrupt_entry+0xbf/0xc0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (171074): [] ipv6_chk_mcast_addr+0x21a/0x710 net/ipv6/mcast.c:1028 softirqs last disabled at (171076): [] lwtunnel_xmit_redirect include/net/lwtunnel.h:92 [inline] softirqs last disabled at (171076): [] ip6_finish_output2+0x1f0/0x1ec0 net/ipv6/ip6_output.c:106 CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 4.18.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: ipv6_addrconf addrconf_dad_work RIP: 0010:fq_codel_dequeue+0x90/0x2260 net/sched/sch_fq_codel.c:304 Code: 48 c1 e8 03 80 3c 18 00 0f 85 81 19 00 00 48 8b 45 d0 4c 8b 30 49 8d 46 10 48 89 85 58 ff ff ff 48 c1 e8 03 0f b6 04 18 84 c0 <74> 08 3c 03 0f 8e 4a 19 00 00 45 8b 66 10 45 85 e4 0f 8e c8 09 00 RSP: 0018:ffff8800b4ad6c78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff8800894b5080 RDX: ffff8800894b5078 RSI: ffff8800894b5068 RDI: ffff88008955e0d8 RBP: ffff8800b4ad6d40 R08: ffff8800b4bded78 R09: 000000000000000a R10: ffff8800b4bded58 R11: 0000000000000001 R12: ffff8800894b5078 R13: ffff8800894b5078 R14: ffff88008955e0d0 R15: ffff8800894b4d80 FS: 0000000000000000(0000) GS:ffff8800ba600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000052f7f0 CR3: 000000000926a000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dequeue_skb net/sched/sch_generic.c:277 [inline] qdisc_restart net/sched/sch_generic.c:380 [inline] __qdisc_run+0x163/0x15d0 net/sched/sch_generic.c:398 __dev_xmit_skb net/core/dev.c:3278 [inline] __dev_queue_xmit+0x119a/0x2960 net/core/dev.c:3537 dev_queue_xmit+0xb/0x10 net/core/dev.c:3602 neigh_hh_output include/net/neighbour.h:473 [inline] neigh_output include/net/neighbour.h:481 [inline] ip_finish_output2+0x944/0x1200 net/ipv4/ip_output.c:229 ip_finish_output+0x402/0xb50 net/ipv4/ip_output.c:317 NF_HOOK_COND include/linux/netfilter.h:276 [inline] ip_output+0x1c1/0x540 net/ipv4/ip_output.c:405 dst_output include/net/dst.h:444 [inline] ip_local_out+0x78/0x130 net/ipv4/ip_output.c:124 iptunnel_xmit+0x4e2/0x880 net/ipv4/ip_tunnel_core.c:91 udp_tunnel_xmit_skb+0x230/0x3a0 net/ipv4/udp_tunnel.c:182 geneve_xmit_skb drivers/net/geneve.c:851 [inline] geneve_xmit+0xd9b/0x29e0 drivers/net/geneve.c:926 __netdev_start_xmit include/linux/netdevice.h:4148 [inline] netdev_start_xmit include/linux/netdevice.h:4157 [inline] xmit_one net/core/dev.c:3034 [inline] dev_hard_start_xmit+0x15e/0x780 net/core/dev.c:3050 __dev_queue_xmit+0x20a2/0x2960 net/core/dev.c:3569 dev_queue_xmit+0xb/0x10 net/core/dev.c:3602 neigh_hh_output include/net/neighbour.h:473 [inline] neigh_output include/net/neighbour.h:481 [inline] ip6_finish_output2+0xc2f/0x1ec0 net/ipv6/ip6_output.c:120 ip6_finish_output+0x43c/0xa50 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:276 [inline] ip6_output+0x1bb/0x630 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:287 [inline] mld_sendpack+0x63d/0xe60 net/ipv6/mcast.c:1683 mld_send_initial_cr.part.16+0xd7/0x110 net/ipv6/mcast.c:2100 mld_send_initial_cr net/ipv6/mcast.c:2113 [inline] ipv6_mc_dad_complete+0x14d/0x1a0 net/ipv6/mcast.c:2107 addrconf_dad_completed+0x861/0xba0 net/ipv6/addrconf.c:4118 addrconf_dad_work+0x63e/0xf70 net/ipv6/addrconf.c:4049 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 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54