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Fix kernel panics caused by thread info flag corruption #2818

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Merged
aviraxp merged 2 commits into from
Oct 19, 2025
Merged

Fix kernel panics caused by thread info flag corruption #2818

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4b4d376
kernel: Fix mayhem caused by clearing unrelated thread info flags
kerneltoast Oct 19, 2025
f7314fc
kernel: Fix missing atomicity when clearing seccomp thread info flag
kerneltoast Oct 19, 2025
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4 changes: 2 additions & 2 deletions kernel/core_hook.c
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Original file line number Diff line number Diff line change
Expand Up @@ -117,9 +117,9 @@ static void disable_seccomp()
// disable seccomp
#if defined(CONFIG_GENERIC_ENTRY) && \
LINUX_VERSION_CODE >= KERNEL_VERSION(5, 11, 0)
current_thread_info()->syscall_work &= ~SYSCALL_WORK_SECCOMP;
clear_syscall_work(SECCOMP);
#else
current_thread_info()->flags &= ~(TIF_SECCOMP | _TIF_SECCOMP);
clear_thread_flag(TIF_SECCOMP);
#endif

#ifdef CONFIG_SECCOMP
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