Yunseong Kim kzall0c
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kzall0c
/ v6.15.11-dept-v16.3.config
Created
September 30, 2025 06:21
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| # | |
| # Automatically generated file; DO NOT EDIT. | |
| # Linux/arm64 6.15.11 Kernel Configuration | |
| # | |
| CONFIG_CC_VERSION_TEXT="Ubuntu clang version 20.1.8 (0ubuntu4)" | |
| CONFIG_GCC_VERSION=0 | |
| CONFIG_CC_IS_CLANG=y | |
| CONFIG_CLANG_VERSION=200108 | |
| CONFIG_AS_IS_LLVM=y | |
| CONFIG_AS_VERSION=200108 |
kzall0c
/ compac.syzlang
Last active
October 7, 2025 06:34
Reproducible hung task on https://github.com/maxbyungchulpark/linux-dept/pull/2 ` ./syz-execprog -threaded=1 -repeat=0 -procs=8 -collide=1 -disable=binfmt_misc,cgroups,close_fds,devlink_pci,ieee802154,net_dev,net_reset,nic_vf,swap,sysctl,tun,usb,vhci,wifi compact.syzlang`
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| 2m28.194272433s ago: executing program 7 (id=14399): | |
| r0 = openat$vimc2(0xffffffffffffff9c, &(0x7f00000002c0), 0x2, 0x0) | |
| close(r0) | |
| openat$sysctl(0xffffffffffffff9c, &(0x7f0000000080)='/proc/sys/vm/compact_memory\x00', 0x1, 0x0) | |
| pwritev2(r0, &(0x7f0000000040)=[{&(0x7f00000000c0)='1', 0x1}], 0x1, 0x0, 0x2, 0x10) | |
| r1 = openat$ppp(0xffffffffffffff9c, &(0x7f0000000000), 0x400, 0x0) | |
| ioctl$PPPIOCGNPMODE(r1, 0xc008744c, &(0x7f0000000100)={0x29}) | |
| ioctl$sock_inet6_SIOCADDRT(0xffffffffffffffff, 0x890b, 0x0) | |
| syz_mount_image$btrfs(&(0x7f0000005100), &(0x7f00000002c0)='./file0\x00', 0x0, &(0x7f0000005180), 0x0, 0x50e7, &(0x7f00000051c0)="$eJzs3U+IVVUcB/DzZpxxUpl5gcbUbGwrgeIiSDEHI2jC4JWrCnR0EYSQgxTUQhBdSLRoQAl0pYRCITE7Ny6kwBBCaRdUECFCiCC1kP4sYt6958595/rue45jY/r5xMy95/7uOfe8x13M9+W5LwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAI4dxTe07V1bdMbVh3fmrnjRO7r945d+zylRAa7eONvL5nxytvvLNrz2sjscP069m22ew2ZNb1l6wx3HFwvl/nz94QwlAywGC+fXmwMmp592B1wFpH1p6cGL+14+KZibNrth9qHKi+dOaNLPcElkt+X11fuJcm278Hk |
kzall0c
/ openssl-oqs.log
Created
September 17, 2025 21:02
liboqs(https://github.com/open-quantum-safe/liboqs): 1698d86177c51aeea3f22eb531a793625edd321f, oqs-provider(https://github.com/open-quantum-safe/oqs-provider): 39c5ab11246d6426720d72c0a74510d5d26de9f1
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| $ git clone https://github.com/open-quantum-safe/liboqs.git | |
| $ cd liboqs | |
| $ mkdir build && cd build | |
| $ cmake -DBUILD_SHARED_LIBS=ON -DOQS_ALGS_ENABLED="All" -DOQS_ENABLE_SIG_STFL_LMS=ON -DCMAKE_INSTALL_PREFIX=$HOME/.local -DOQS_USE_OPENSSL=ON.. | |
| $ sed -i "s/false/true/g" oqs-template/generate.yml && LIBOQS_SRC_DIR=$HOME/liboqs python3 oqs-template/generate.py | |
| $ git clone https://github.com/open-quantum-safe/oqs-provider.git | |
| $ cd oqs-provider/ | |
| $ mkdir build |
kzall0c
/ atomic sleep check on gfs2 with cocci
Created
August 16, 2025 02:52
This is WIP for atomic sleep check in linux kernel with cocci check. `make coccicheck COCCI=../../scripts/coccinelle/rt/sleep_in_atomic.cocci MODE=report M=./fs/gfs2 2>&1 | tee gfs2-rt.log`
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| make[1]: Entering directory '/home/ysk/linux/fs/gfs2' | |
| Please check for false positives in the output before submitting a patch. | |
| When using "patch" mode, carefully review the patch before submitting it. | |
| /home/ysk/.local/bin/spatch -D report --no-show-diff --very-quiet --cocci-file ../../scripts/coccinelle/rt/sleep_in_atomic.cocci --no-includes --include-headers --patch /home/ysk/linux --dir . -I /home/ysk/linux/arch/arm64/include -I /home/ysk/linux/arch/arm64/include/generated -I /home/ysk/linux/include -I /home/ysk/linux/include -I /home/ysk/linux/arch/arm64/include/uapi -I /home/ysk/linux/arch/arm64/include/generated/uapi -I /home/ysk/linux/include/uapi -I /home/ysk/linux/include/generated/uapi --include /home/ysk/linux/include/linux/compiler-version.h --include /home/ysk/linux/include/linux/kconfig.h --jobs 6 --chunksize 1 | |
| Error: Required data (ATOMIC_CALLEES, POTENTIAL_SLEEPERS, or CALL_GRAPH) not collected. | |
| Debug: POTENTIAL_SLEEPERS = {'gfs2_quota_sync': {'mutex_lock() at ./quota.c:1324 (is a sleeping l |
kzall0c
/ gist:cd33d735406dc1b532fc0194eac73b70
Last active
August 14, 2025 06:29
coccicheck for the atomic in sleep for the PREEMPT_RT Linux Kernel
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| make[1]: Entering directory '/home/ysk/linux/fs/gfs2' | |
| Please check for false positives in the output before submitting a patch. | |
| When using "patch" mode, carefully review the patch before submitting it. | |
| /home/ysk/.local/bin/spatch -D report --no-show-diff --very-quiet --cocci-file /home/ysk/linux/scripts/coccinelle/api/alloc/alloc_cast.cocci --no-includes --include-headers --patch /home/ysk/linux --dir . -I /home/ysk/linux/arch/arm64/include -I /home/ysk/linux/arch/arm64/include/generated -I /home/ysk/linux/include -I /home/ysk/linux/include -I /home/ysk/linux/arch/arm64/include/uapi -I /home/ysk/linux/arch/arm64/include/generated/uapi -I /home/ysk/linux/include/uapi -I /home/ysk/linux/include/generated/uapi --include /home/ysk/linux/include/linux/compiler-version.h --include /home/ysk/linux/include/linux/kconfig.h --jobs 6 --chunksize 1 --use-idutils --use-glimpse --very-quiet --jobs 12 | |
| can't open glimpse index-file /home/ysk/linux/fs/gfs2/.glimpse_index | |
| (use -H to give an index-directory or run 'glimpseind |
kzall0c
/ kcov-usb-invalid-sleeping.log
Created
July 25, 2025 19:33
PREEPT_RT have BUG from f85d39dd7ed8 ("kcov, usb: disable interrupts in kcov_remote_start_usb_softirq")
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| [ 114.639440][ C1] BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 | |
| [ 114.639474][ C1] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 30, name: ksoftirqd/1 | |
| [ 114.639483][ C1] preempt_count: 0, expected: 0 | |
| [ 114.639488][ C1] RCU nest depth: 2, expected: 2 | |
| [ 114.639501][ C1] CPU: 1 UID: 0 PID: 30 Comm: ksoftirqd/1 Tainted: G W 6.16.0-rc1-rt1 #11 PREEMPT_RT | |
| [ 114.639516][ C1] Tainted: [W]=WARN | |
| [ 114.639519][ C1] Hardware name: QEMU KVM Virtual Machine, BIOS 2025.02-8 05/13/2025 | |
| [ 114.639525][ C1] Call trace: | |
| [ 114.639529][ C1] show_stack+0x2c/0x3c (C) | |
| [ 114.639561][ C1] __dump_stack+0x30/0x40 |
kzall0c
/ PREEMPT_RT-hardlockup.log
Created
July 25, 2025 00:05
https://lore.kernel.org/linux-rt-devel/[email protected]/ ``` $ git remote add rt-devel git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git $ git checkout v6.16-rc1-rt1 ``` Arm64 Server - RADXA Orion6 - Armv9.2 Architecture
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| 📃 coverage | |
| 🤖 syscalls | |
| 🛒 corpus | |
| 💻 VMs | |
| 🔧 config | |
| Kernel panic - not syncing: Hard LOCKUP | |
| CPU: 1 UID: 0 PID: 9003 Comm: systemd-rfkill Tainted: G W 6.16.0-rc1-rt1 #11 PREEMPT_RT | |
| Tainted: [W]=WARN |
kzall0c
/ PREEMPT_RT-perf-soft-lockup.log
Created
July 25, 2025 00:00
https://lore.kernel.org/linux-rt-devel/[email protected]/ ``` $ git remote add rt-devel git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git $ git checkout v6.16-rc1-rt1 ``` Arm64 Server - RADXA Orion6 - Armv9.2 Architecture - Quad Big Cortex®-A720 Up to 2.6GHz - Quad Medium Cortex®-A720 Up to 2.4GHz - Quad Lit…
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| perf lockup | |
| watchdog: BUG: soft lockup - CPU#2 stuck for 23s! [syz.1.915:10188] | |
| CPU#2 Utilization every 4s during lockup: | |
| #1: 100% system, 0% softirq, 0% hardirq, 0% idle | |
| #2: 100% system, 0% softirq, 0% hardirq, 0% idle | |
| #3: 100% system, 0% softirq, 1% hardirq, 0% idle | |
| #4: 100% system, 0% softirq, 0% hardirq, 0% idle | |
| #5: 100% system, 0% softirq, 0% hardirq, 0% idle | |
| Modules linked in: |
kzall0c
/ perf-disabled-child.c
Last active
July 24, 2025 18:48
Triggers kernel WARN and UBSAN by creating a disabled child perf event in a hardware event group. Link: https://lore.kernel.org/lkml/aIIT7fq3xG9qtRD8@J2N7QTR9R3/
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| /* | |
| * Reproducer by Mark Rutland <[email protected]> | |
| * Triggers kernel WARN and UBSAN with disabled child perf event. | |
| */ | |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <unistd.h> | |
| #include <sys/syscall.h> |
kzall0c
/ kprobe_insn_boundary-stall.txt
Created
June 27, 2024 03:48
scripts/decode_stacktrace.sh /usr/lib/debug/boot/vmlinux-6.8.0-36-generic $HOME/linux-source-6.8.0 < kprobe_insn_boundary-stall.txt
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| rcu: INFO: rcu_sched detected stalls on CPUs/tasks:s: | |
| rcu: | |
| (detected by 0, t=6002 jiffies, g=24353, q=1 ncpus=1)1) | |
| rcu: All QSes seen, last rcu_sched kthread activity 6002 (4294978930-4294972928), jiffies_till_next_fqs=1, root ->qsmask 0x0x0 | |
| rcu: rcu_sched kthread starved for 6002 jiffies! g24353 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0=0 | |
| rcu: | |
| Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.r. | |
| rcu: RCU grace-period kthread stack dump:p: | |
| task:rcu_sched state:R running task stack:0 pid:16 tgid:16 ppid:2 flags:0x0000000000 | |
| Call Trace:e: |
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