ci starts bisection 2026-06-28 04:30:20.639025259 +0000 UTC m=+121849.187233765
bisecting cause commit starting from 5a66900afbd6b2a063eebad35294038a654de2b0
building syzkaller on fb92f11c4789d9647a75c09c983dbee5c8488ccf
ensuring issue is reproducible on original commit 5a66900afbd6b2a063eebad35294038a654de2b0

testing commit 5a66900afbd6b2a063eebad35294038a654de2b0 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 5fbff8ce5182dd0824a9802dbf8fca5b4b4e70b4feea124b4c7c6d8380508ef9
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
check whether we can drop unnecessary instrumentation
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
testing commit 5a66900afbd6b2a063eebad35294038a654de2b0 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 8e1aa60348e9b913d9519757327dc781d8e65b3c12e99570b313535394e1fb67
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the bug reproduces without the instrumentation
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
kconfig minimization: base=4140 full=8588 leaves diff=2141
split chunks (needed=false): <2141>
split chunk #0 of len 2141 into 5 parts
testing without sub-chunk 1/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit 5a66900afbd6b2a063eebad35294038a654de2b0 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 11bcd4ce1dc761c3adc28466ad8dc9a2845eae7be4e709d9551c376e4d3b9760
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
testing commit 5a66900afbd6b2a063eebad35294038a654de2b0 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 8f006f952ae722c33c7309bee3afa22766e6314f6f0025a2f76ac2c61799d444
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing commit 5a66900afbd6b2a063eebad35294038a654de2b0 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 45a9e9b29a17f01b64f9747be194e2e73e3c86f79feb0f5599bd19dee48b34be
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit 5a66900afbd6b2a063eebad35294038a654de2b0 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 56912b5c9f52d96f9ea8316773a75dabd7c1bd3896e16b6720b79d9e183a928b
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 5a66900afbd6b2a063eebad35294038a654de2b0 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 7985a2e11a54bc2375535fdce5c618da25da57c53ca031426527654b4c447372
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
picked [v7.1 v7.0 v6.19 v6.17 v6.15 v6.13 v6.11 v6.9 v6.6 v6.3 v6.0 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 44 release tags
testing release v7.1
testing commit 8cd9520d35a6c38db6567e97dd93b1f11f185dc6 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 2650d81cf6beb37c270ab2c68e7488af6d6a347db5387ca3cd479395d8bde91e
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
testing release v7.0
testing commit 028ef9c96e96197026887c0f092424679298aae8 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 499345a1ddf7073290b02570f16d8bc1c7a3e6d1c2fe0599a0ada8fd303b5a71
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
testing release v6.19
testing commit 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 343413d254f64599ef7c819c3f80a8cc70d2c9427bf2ba680d2fe31733967119
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
testing release v6.17
testing commit e5f0a698b34ed76002dc5cff3804a61c80233a7a gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 8b023ecc6169de4c81e7d87f1c18a63c1a5836a0db8ae8efc2c80e6bfd0bc34f
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
testing release v6.15
testing commit 0ff41df1cb268fc69e703a08a57ee14ae967d0ca gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: aa3367ef2735da7bcd1ab64a01ed3d136432c675db4850027b3eb90667cffccd
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
testing release v6.13
testing commit ffd294d346d185b70e28b1a28abe367bbfe53c04 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 00f92ab4268f29cd2be646367224ca7ad72aa2c9cfb55fc999cb4cdf09f12cc2
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
testing release v6.11
testing commit 98f7e32f20d28ec452afb208f9cffc08448a2652 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 9b2607ecce0f2bee967c33a83964573d149021fbed0d648f654800e48c1fb0ce
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
testing release v6.9
testing commit a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 090e4dad61dfade63d13c9684bed3152191b8820f72a7c2e98aee1cdbbd1b509
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
testing release v6.6
testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: e8c0c2f9fabb35f1aae7d7af2c1003538ba8d5f9065052b32cf17b12a1d587b5
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
testing release v6.3
testing commit 457391b0380335d5e9a5babdec90ac53928b23b4 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: dc4ea5b8cbfa1d66e319824e54f010c398770fb440b9eb7b4153712b7a4f3ef6
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
testing release v6.0
testing commit 4fe89d07dcc2804c8b562f6c7896a45643d34b2f gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 7b04e27563b3722f90943cb39c57cbcf3624f76e88f66afc2d37b79834f72585
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
testing release v5.17
testing commit f443e374ae131c168a065ea1748feac6b2e76613 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: b7d6b000c628aedf4952f99215da8948f6b6071d6577752359d64ab4c2d5ee3a
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
testing release v5.14
testing commit 7d2a07b769330c34b4deabeed939325c77a7ec2f gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: d8055a961240ea0220be6dc9cd30ee2016ced17ee51c62a5095d6dad4539b35b
all runs: boot failed: invalid opcode in public_key_verify_signature
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing release v5.11
testing commit f40ddce88593482919761f74910f42f4b84c004b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: b10e44ebe06132c2c5966b04b9781a1273bb6d6e2031833acd463c99940adaf5
all runs: boot failed: invalid opcode in public_key_verify_signature
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c gcc
compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 856ca5a7350b8bc9394189075e00c3c8eb4ceac90d59c7d07bf737ae05e17689
all runs: boot failed: invalid opcode in public_key_verify_signature
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing release v5.5
testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 gcc
compiler: gcc (GCC) 8.4.1 20210217
failed building d5226fa6dbae0569ee43ecfc08bdcd6770fc4755: scripts/extract-cert.c:46:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/extract-cert.c:59:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:89:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
tools/include/linux/string.h:20:15: error: redundant redeclaration of 'strlcpy' [-Werror=redundant-decls]
testing release v5.2
testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 gcc
compiler: gcc (GCC) 8.4.1 20210217
failed building 0ecfebd2b52404ae0c54a878c872bb93363ada36: scripts/extract-cert.c:46:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/extract-cert.c:59:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:89:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
tools/include/linux/string.h:17:15: error: redundant redeclaration of 'strlcpy' [-Werror=redundant-decls]
testing release v4.20
testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be gcc
compiler: gcc (GCC) 8.4.1 20210217
failed building 8fe28cb58bcb235034b64cbbb7550a8a43fd88be: ./security/selinux/include/classmap.h:249:2: error: #error New address family defined, please update secclass_map.
scripts/extract-cert.c:46:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/extract-cert.c:59:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:89:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
tools/include/linux/string.h:17:15: error: redundant redeclaration of 'strlcpy' [-Werror=redundant-decls]
testing release v4.19
revisions tested: 22, total time: 12h33m19.015130599s (build: 9h21m9.86086158s, test: 1h48m28.550432233s)
error: bisection is taking too long (>12h0m0s), aborting