ci starts bisection 2025-06-28 16:53:54.110645551 +0000 UTC m=+41862.874704020
bisecting cause commit starting from 2c923c845768a0f0e34b8161d70bc96525385782
building syzkaller on ed3e87f71e79614f39e963e510c1e594d35a2ea2
fetch other tags and check if the commit is present
ensuring issue is reproducible on original commit 2c923c845768a0f0e34b8161d70bc96525385782

testing commit 2c923c845768a0f0e34b8161d70bc96525385782 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 53749af334a1c7fc62afc1dcfa8057acd26dd18c918c72fa74c762f730d72322
all runs: crashed: INFO: task hung in xfs_map_blocks
representative crash: INFO: task hung in xfs_map_blocks, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit 2c923c845768a0f0e34b8161d70bc96525385782 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: bac93284c9072a34d8838b7c34ddf9a722c8fbe67cfb339d5c2257b97d98a629
run #0: crashed: INFO: task hung in xfs_map_blocks
run #1: crashed: INFO: task hung in xfs_map_blocks
run #2: crashed: INFO: task hung in xfs_map_blocks
run #3: crashed: INFO: task hung in xfs_map_blocks
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: INFO: task hung in xfs_map_blocks, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
kconfig minimization: base=4095 full=8372 leaves diff=2121
split chunks (needed=false): <2121>
split chunk #0 of len 2121 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 2c923c845768a0f0e34b8161d70bc96525385782 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 92ebbe914adcb2dba669f80f21d01ff8565eee13203d783d5cdce4d13151cee2
run #0: crashed: INFO: task hung in xfs_map_blocks
run #1: crashed: INFO: task hung in xfs_map_blocks
run #2: crashed: INFO: task hung in xfs_map_blocks
run #3: crashed: INFO: task hung in xfs_map_blocks
run #4: crashed: INFO: task hung in xfs_map_blocks
run #5: OK
run #6: OK
run #7: crashed: INFO: task hung in xfs_map_blocks
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
representative crash: INFO: task hung in xfs_map_blocks, types: [HANG]
testing without sub-chunk 2/5
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit 2c923c845768a0f0e34b8161d70bc96525385782 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 4b3e2dad35874d98477c9ff3881bf48f97b3499853d77ba063039373d6505ca2
run #0: infra problem: failed to create instance: googleapi: Error 503: Internal error. Please try again or contact Google Support. (Code: '638A5B9F4B5E0.8E94594.3F2BBC01'), backendError
run #1: crashed: INFO: task hung in xfs_map_blocks
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
representative crash: INFO: task hung in xfs_map_blocks, types: [HANG]
reproducer is flaky (1.00 repro chance estimate)
revisions tested: 4, total time: 1h25m31.755918802s (build: 42m28.261353954s, test: 37m14.517882027s)
error: config minimization failed: unable to determine the verdict because of infra errors