2025-01-11 12:29:50
Linux
PUBLISHED
In the Linux kernel, the following vulnerability has been resolved:
riscv: Fix IPIs usage in kfence_protect_page()
flush_tlb_kernel_range() may use IPIs to flush the TLBs of all the
cores, which triggers the following warning when the irqs are disabled:
[ 3.455330] WARNING: CPU: 1 PID: 0 at kernel/smp.c:815 smp_call_function_many_cond+0x452/0x520
[ 3.456647] Modules linked in:
[ 3.457218] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.12.0-rc7-00010-g91d3de7240b8 #1
[ 3.457416] Hardware name: QEMU QEMU Virtual Machine, BIOS
[ 3.457633] epc : smp_call_function_many_cond+0x452/0x520
[ 3.457736] ra : on_each_cpu_cond_mask+0x1e/0x30
[ 3.457786] epc : ffffffff800b669a ra : ffffffff800b67c2 sp : ff2000000000bb50
[ 3.457824] gp : ffffffff815212b8 tp : ff6000008014f080 t0 : 000000000000003f
[ 3.457859] t1 : ffffffff815221e0 t2 : 000000000000000f s0 : ff2000000000bc10
[ 3.457920] s1 : 0000000000000040 a0 : ffffffff815221e0 a1 : 0000000000000001
[ 3.457953] a2 : 0000000000010000 a3 : 0000000000000003 a4 : 0000000000000000
[ 3.458006] a5 : 0000000000000000 a6 : ffffffffffffffff a7 : 0000000000000000
[ 3.458042] s2 : ffffffff815223be s3 : 00fffffffffff000 s4 : ff600001ffe38fc0
[ 3.458076] s5 : ff600001ff950d00 s6 : 0000000200000120 s7 : 0000000000000001
[ 3.458109] s8 : 0000000000000001 s9 : ff60000080841ef0 s10: 0000000000000001
[ 3.458141] s11: ffffffff81524812 t3 : 0000000000000001 t4 : ff60000080092bc0
[ 3.458172] t5 : 0000000000000000 t6 : ff200000000236d0
[ 3.458203] status: 0000000200000100 badaddr: ffffffff800b669a cause: 0000000000000003
[ 3.458373] [