ci2 starts bisection 2025-07-22 21:25:24.880999431 +0000 UTC m=+26275.513513774
bisecting cause commit starting from 89be9a83ccf1f88522317ce02f854f30d6115c41
building syzkaller on 8e9d1dc158f35de43cdf83fba11bfce93ee7a227
ensuring issue is reproducible on original commit 89be9a83ccf1f88522317ce02f854f30d6115c41

testing commit 89be9a83ccf1f88522317ce02f854f30d6115c41 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: a29ae3db11402754ec5aca25fe6c17ee848a8448d5def380c9a7c517787d6bc7
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed
testing commit 89be9a83ccf1f88522317ce02f854f30d6115c41 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 836692d95efa057b4236ce6a5a2c0058585c98e240e219627cc2450bbbb53533
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
kconfig minimization: base=4088 full=8473 leaves diff=2185
split chunks (needed=false): <2185>
split chunk #0 of len 2185 into 5 parts
testing without sub-chunk 1/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 89be9a83ccf1f88522317ce02f854f30d6115c41 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 06f6ed3947b31240ef0127a19ae23f4883d3dcb78746500de82d005389ce90a4
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 89be9a83ccf1f88522317ce02f854f30d6115c41 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: ca671cf4dd6fc6292ef23961568ef42e59a1badb643802b15d15df87ad904e1d
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 89be9a83ccf1f88522317ce02f854f30d6115c41 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 9549199a51d7fece2d55d0cf48114672c5275d982b5bb22c5b7145247acf92af
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [kasan locking atomic_sleep memleak ubsan bug_or_warning], they are not needed
testing commit 89be9a83ccf1f88522317ce02f854f30d6115c41 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 25a46aefa7e9da945742dfca7f26f8e49975634fb8897853934141242d33ebc2
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 89be9a83ccf1f88522317ce02f854f30d6115c41 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 3e3cfdffaf10e81726956f1e0f9c278e5ca710baca4fbcf2829def2552bed547
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
the chunk can be dropped
disabling configs for [kasan locking atomic_sleep memleak ubsan bug_or_warning], they are not needed
picked [v6.15 v6.14 v6.13 v6.11 v6.9 v6.7 v6.5 v6.3 v6.0 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 38 release tags
testing release v6.15
testing commit 0ff41df1cb268fc69e703a08a57ee14ae967d0ca gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: a8d123ed4d2a599b0f8204bd96c46877a7093dba35c35256c1a64903cdea2980
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
testing release v6.14
testing commit 38fec10eb60d687e30c8c6b5420d86e8149f7557 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: e5bf002e9620ec9e5b7b1f812c17534faf65abcab59cd546f977d403d018e44a
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
testing release v6.13
testing commit ffd294d346d185b70e28b1a28abe367bbfe53c04 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: ca567f826ac963843026b8004d05e169682746460dfeba9e3360078ebfea3c39
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
testing release v6.11
testing commit 98f7e32f20d28ec452afb208f9cffc08448a2652 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 4accfdefc6660f7ac524a80bdb56812c3e617eda77a2e27dc767e364cce928be
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
testing release v6.9
testing commit a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 2664de06a5cbea98bfa80ee6ea9f96b497474b9708f4cdefd11fcac288523e97
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
testing release v6.7
testing commit 0dd3ee31125508cd67f7e7172247f05b7fd1753a gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: e4abebfae777aa2f431f84dacbfe8541e40737b46c722054d8c32bbb2c67b65d
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
testing release v6.5
testing commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: d9313c2c7fe22163cef82f5d569d93eb98bedc0c49430ab82194db35c9742518
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
testing release v6.3
testing commit 457391b0380335d5e9a5babdec90ac53928b23b4 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: a8a2e1a7eafbf8b2053190da8151853aa7be7b13b941fa8aad63c0a0b0ba9e65
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
testing release v6.0
testing commit 4fe89d07dcc2804c8b562f6c7896a45643d34b2f gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
failed building 4fe89d07dcc2804c8b562f6c7896a45643d34b2f: ld.lld: error: version script assignment of 'LINUX_2.6' to symbol '__vdso_sgx_enter_enclave' failed: symbol not defined
llvm-objdump: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
llvm-objcopy: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
testing release v5.17
testing commit f443e374ae131c168a065ea1748feac6b2e76613 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
failed building f443e374ae131c168a065ea1748feac6b2e76613: scripts/sign-file.c:89:14: warning: 'ERR_get_error_line' is deprecated [-Wdeprecated-declarations]
/usr/include/openssl/err.h:422:1: note: 'ERR_get_error_line' has been explicitly marked deprecated here
scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated [-Wdeprecated-declarations]
certs/extract-cert.c:46:14: warning: 'ERR_get_error_line' is deprecated [-Wdeprecated-declarations]
certs/extract-cert.c:59:9: warning: 'ERR_get_error_line' is deprecated [-Wdeprecated-declarations]
ld.lld: error: version script assignment of 'LINUX_2.6' to symbol '__vdso_sgx_enter_enclave' failed: symbol not defined
llvm-objdump: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
llvm-objcopy: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
testing release v5.14
testing commit 7d2a07b769330c34b4deabeed939325c77a7ec2f gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: aec753225682d91dd02ebaf396720a324578d3635e8b2c8578afbc9b06333d00
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
testing release v5.11
testing commit f40ddce88593482919761f74910f42f4b84c004b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 23f1daed4c48de20d050610005588677871d88ea7678fc725a6df57fcdf6c2df
all runs: crashed: INFO: task hung in generic_file_write_iter
representative crash: INFO: task hung in generic_file_write_iter, types: [HANG]
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c gcc
compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 315219548b8a2eba8156fa606f4127b31463eee5e5c2a177a49535b417c5b01f
all runs: boot failed: can't ssh into the instance
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 version 8.4.1 20210217 (GCC)
kernel signature: f49272980fca43ff891cdd9529a33b348fe49545c1456985b253f5e6af0352d5
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing release v5.2
testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 71a7e49eb0bb42a458f002527d04862bc774a755076e983d3729ea4195d1e3a7
run #0: infra problem: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc00743fc20 0xc00743fd10 0xc00743fdb0] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request.  '(resource type:compute)'. ForceSendFields:[] NullFields:[]}
run #1: boot failed: can't ssh into the instance
run #2: boot failed: can't ssh into the instance
run #3: boot failed: can't ssh into the instance
run #4: boot failed: can't ssh into the instance
run #5: boot failed: can't ssh into the instance
run #6: boot failed: can't ssh into the instance
run #7: boot failed: can't ssh into the instance
run #8: boot failed: can't ssh into the instance
run #9: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing release v4.20
testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: b8a148ef117f75844412e991fe7769d391ad9a3d21eca50b93746bc2b9e6969b
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 42429b578b35315c2a018b2c21a85ae5106f0202fdd360ffb643fa0267eb70cb
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
revisions tested: 22, total time: 6h9m58.653516132s (build: 3h11m6.682652688s, test: 2h42m34.226953825s)
error: oldest tested release had kernel build, boot or test errors