Hello,
we don't have enough knowledge to dig deep the relation between the random
issues and the change. we tried to rebuild kernel. still see the same config
diff:
---
/pkg/linux/i386-randconfig-013-20250413/gcc-12/d2cf8ccf5a1871058a083c00efe37d7eb91bf6bd/.config
2025-04-22 15:01:12.846009313 +0800
+++
/pkg/linux/i386-randconfig-013-20250413/gcc-12/ed2b548f1017586c44f50654ef9febb42d491f31/.config
2025-04-22 15:00:23.620141366 +0800
@@ -5558,7 +5558,6 @@ CONFIG_UBSAN_BOUNDS_STRICT=y
CONFIG_UBSAN_SHIFT=y
# CONFIG_UBSAN_DIV_ZERO is not set
CONFIG_UBSAN_UNREACHABLE=y
-CONFIG_UBSAN_SIGNED_WRAP=y
# CONFIG_UBSAN_BOOL is not set
# CONFIG_UBSAN_ENUM is not set
# CONFIG_UBSAN_ALIGNMENT is not set
we tried run both parent and this commit until almost 1000 times, the parent
still keep clean on running same test, this commit shows various issues
=========================================================================================
tbox_group/testcase/rootfs/kconfig/compiler/runtime/scale_type:
vm-snb-i386/rcuscale/debian-11.1-i386-20220923.cgz/i386-randconfig-013-20250413/gcc-12/300s/srcu
d2cf8ccf5a187105 ed2b548f1017586c44f50654ef9
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
:999 27% 269:998 last_state.booting
:999 27% 269:998 last_state.is_incomplete_run
:999 18% 177:998
dmesg.BUG:kernel_hang_in_boot_stage
:999 2% 16:998 dmesg.BUG:workqueue_lockup-pool
:999 18% 176:998
dmesg.INFO:task_blocked_for_more_than#seconds
:999 8% 76:998
dmesg.IP-Config:Auto-configuration_of_network_failed
:999 27% 269:998 dmesg.boot_failures
so we still make out this report FYI what we observed in our tests.
kernel test robot noticed "INFO:task_blocked_for_more_than#seconds" on:
commit: ed2b548f1017586c44f50654ef9febb42d491f31 ("ubsan/overflow: Rework
integer overflow sanitizer option to turn on everything")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
[test failed on linus/master c1336865c4c90fcc649df0435a7c86c30030a723]
[test failed on linux-next/master f660850bc246fef15ba78c81f686860324396628]
in testcase: rcuscale
version:
with following parameters:
runtime: 300s
scale_type: srcu
config: i386-randconfig-013-20250413
compiler: gcc-12
test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
(please refer to attached dmesg/kmsg for entire log/backtrace)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.s...@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202504231437.d0a0174e-...@intel.com
[ 985.037272][ T22] INFO: task swapper:1 blocked for more than 491 seconds.
[ 985.037272][ T22] Tainted: G T
6.14.0-rc2-00021-ged2b548f1017 #1
[ 985.114644][ T22] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 985.131238][ T22] task:swapper state:D stack:0 pid:1
tgid:1 ppid:0 task_flags:0x4000040 flags:0x00004000
[ 985.184178][ T22] Call Trace:
[ 985.184178][ T22] __schedule (kernel/sched/core.c:5380
kernel/sched/core.c:6764)
[ 985.239369][ T22] schedule (kernel/sched/core.c:6842
kernel/sched/core.c:6856)
[ 985.292955][ T22] async_synchronize_cookie_domain (kernel/async.c:317
kernel/async.c:310)
[ 985.292955][ T22] ? swake_up_all (kernel/sched/wait.c:383)
[ 985.347537][ T22] wait_for_initramfs (init/initramfs.c:767)
[ 985.347537][ T22] populate_rootfs (init/initramfs.c:777)
[ 985.402751][ T22] ? do_copy (init/initramfs.c:771)
[ 985.402751][ T22] do_one_initcall (init/main.c:1257)
[ 985.483184][ T22] ? parse_args (kernel/params.c:188)
[ 985.536816][ T22] do_initcalls (init/main.c:1318 init/main.c:1335)
[ 985.599031][ T22] kernel_init_freeable (init/main.c:1570)
[ 985.599031][ T22] ? rest_init (init/main.c:1449)
[ 985.625998][ T22] kernel_init (init/main.c:1459)
[ 985.625998][ T22] ret_from_fork (arch/x86/kernel/process.c:154)
[ 985.680001][ T22] ? rest_init (init/main.c:1449)
[ 985.680001][ T22] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 985.733799][ T22] entry_INT80_32 (arch/x86/entry/entry_32.S:942)
[ 985.842056][ T22]
[ 985.842056][ T22] Showing all locks held in the system:
[ 985.842056][ T22] 4 locks held by kworker/u4:1/19:
[ 985.895824][ T22] 1 lock held by khungtaskd/22:
[ 985.895824][ T22] #0: c88799b0 (rcu_read_lock){....}-{1:3}, at:
rcu_lock_acquire (include/linux/rcupdate.h:336)
[ 985.949551][ T22]
[ 985.949551][ T22] =============================================
[ 985.949551][ T22]
BUG: kernel hang in boot stage
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250423/202504231437.d0a0174e-...@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
