ci starts bisection 2026-07-18 12:20:34.562583899 +0000 UTC m=+41235.196726769
bisecting cause commit starting from af5e34a41cd607c00ef752e00331736570992354
building syzkaller on 72524a6625c995608a7d179201dff2195b8d1f66
ensuring issue is reproducible on original commit af5e34a41cd607c00ef752e00331736570992354

testing commit af5e34a41cd607c00ef752e00331736570992354 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: b29cf0c4bcf3352b80b1476607139d492f3dbc40256162b720d209b1c8273858
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 [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit af5e34a41cd607c00ef752e00331736570992354 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 95df7223e1cc74edf7391a1cf8929441305f131dfce77caa3b0ed240ea95f59c
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 [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
kconfig minimization: base=4140 full=8594 leaves diff=2146
split chunks (needed=false): <2146>
split chunk #0 of len 2146 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 af5e34a41cd607c00ef752e00331736570992354 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: c1c3185067e33a77d2885685c320b532e11a4733b22d5b0c15320547b845daa2
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 [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit af5e34a41cd607c00ef752e00331736570992354 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 751c6a0e31a78de509cb8b020fc8a2d1c8d9671df1d213f2155be53e3bc48320
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 af5e34a41cd607c00ef752e00331736570992354 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 457255acb9dd0fdce57f72e66937dddd944e49ad7d23a5b8a7c663bfde61751e
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 [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit af5e34a41cd607c00ef752e00331736570992354 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 1fd8279a24fb4d33724258de7686f5f076b8dd05227beaec16bbf946e3480842
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 af5e34a41cd607c00ef752e00331736570992354 gcc
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 1ad9562f0ac8aa3b7a793d0e6df364fbf931590e0a290c94d30615ed5024d426
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 [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], 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: a22f815817a00f2ea0ec328b369d620969b284fec144f0a1a4f25234095de670
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: c620caeaf050047bd655ead5fc749a00b4dcb1848070f718813aefa5d77c16ca
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: b3b2632ef58f0f65799e24bcddc1d49786e3bc62a65b14b6d3a7b10708ba6114
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: 4c40f49c3760c97e0f24a99c780ebca0407c114a3461470a890efdb8e7df08e9
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: e3edc965fa37cda174e0dda3adf7317c4c37651a496bdf91d5e6f6f687070792
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: 9ee142d241269157d6bcf56361f2b7e6fb4b0ab8d1a9c1d15c9aaecfdc82537a
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: 496c3af204bdff3bfe8a895da74ffce66a4f94785c86733b3cacceea79eca641
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: 6e431692292c83ba516ff511459d0f164f737994bbfbdd8adc6658c5ca0a4fe6
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: 8603bd40c62edadde67de4beec9a700cdab1e08742e65bea2338eaf00f537577
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: b8dd30ae9ec3fcb143c49cef2b8f0323872765e5865d3cb9aa96b6c25dda5c53
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: bf08e93bfe06e8847641de1fbb5df2cc1d91263d30c21511c8af6987221bf5d1
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: f1915bc203b73ee9ab92c0a308bfa0361a9f82f03c1cb0b52e2b5c97f36009d5
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
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d gcc
compiler: gcc (GCC) 8.4.1 20210217
failed building 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d: ./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]
revisions tested: 22, total time: 8h11m20.301843443s (build: 4h35m50.628345076s, test: 2h20m48.644581947s)
error: oldest tested release had kernel build, boot or test errors