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| CVE-ID | ||
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CVE-2025-22069 |
• CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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| Description | ||
| In the Linux kernel, the following vulnerability has been resolved: riscv: fgraph: Fix stack layout to match __arch_ftrace_regs argument of ftrace_return_to_handler Naresh Kamboju reported a "Bad frame pointer" kernel warning while running LTP trace ftrace_stress_test.sh in riscv. We can reproduce the same issue with the following command: ``` $ cd /sys/kernel/debug/tracing $ echo 'f:myprobe do_nanosleep%return args1=$retval' > dynamic_events $ echo 1 > events/fprobes/enable $ echo 1 > tracing_on $ sleep 1 ``` And we can get the following kernel warning: [ 127.692888] ------------[ cut here ]------------ [ 127.693755] Bad frame pointer: expected ff2000000065be50, received ba34c141e9594000 [ 127.693755] from func do_nanosleep return to ffffffff800ccb16 [ 127.698699] WARNING: CPU: 1 PID: 129 at kernel/trace/fgraph.c:755 ftrace_return_to_handler+0x1b2/0x1be [ 127.699894] Modules linked in: [ 127.700908] CPU: 1 UID: 0 PID: 129 Comm: sleep Not tainted 6.14.0-rc3-g0ab191c74642 #32 [ 127.701453] Hardware name: riscv-virtio,qemu (DT) [ 127.701859] epc : ftrace_return_to_handler+0x1b2/0x1be [ 127.702032] ra : ftrace_return_to_handler+0x1b2/0x1be [ 127.702151] epc : ffffffff8013b5e0 ra : ffffffff8013b5e0 sp : ff2000000065bd10 [ 127.702221] gp : ffffffff819c12f8 tp : ff60000080853100 t0 : 6e00000000000000 [ 127.702284] t1 : 0000000000000020 t2 : 6e7566206d6f7266 s0 : ff2000000065bd80 [ 127.702346] s1 : ff60000081262000 a0 : 000000000000007b a1 : ffffffff81894f20 [ 127.702408] a2 : 0000000000000010 a3 : fffffffffffffffe a4 : 0000000000000000 [ 127.702470] a5 : 0000000000000000 a6 : 0000000000000008 a7 : 0000000000000038 [ 127.702530] s2 : ba34c141e9594000 s3 : 0000000000000000 s4 : ff2000000065bdd0 [ 127.702591] s5 : 00007fff8adcf400 s6 : 000055556dc1d8c0 s7 : 0000000000000068 [ 127.702651] s8 : 00007fff8adf5d10 s9 : 000000000000006d s10: 0000000000000001 [ 127.702710] s11: 00005555737377c8 t3 : ffffffff819d899e t4 : ffffffff819d899e [ 127.702769] t5 : ffffffff819d89a0 t6 : ff2000000065bb18 [ 127.702826] status: 0000000200000120 badaddr: 0000000000000000 cause: 0000000000000003 [ 127.703292] [<ffffffff8013b5e0>] ftrace_return_to_handler+0x1b2/0x1be [ 127.703760] [<ffffffff80017bce>] return_to_handler+0x16/0x26 [ 127.704009] [<ffffffff80017bb8>] return_to_handler+0x0/0x26 [ 127.704057] [<ffffffff800d3352>] common_nsleep+0x42/0x54 [ 127.704117] [<ffffffff800d44a2>] __riscv_sys_clock_nanosleep+0xba/0x10a [ 127.704176] [<ffffffff80901c56>] do_trap_ecall_u+0x188/0x218 [ 127.704295] [<ffffffff8090cc3e>] handle_exception+0x14a/0x156 [ 127.705436] ---[ end trace 0000000000000000 ]--- The reason is that the stack layout for constructing argument for the ftrace_return_to_handler in the return_to_handler does not match the __arch_ftrace_regs structure of riscv, leading to unexpected results. | ||
| References | ||
| Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete. | ||
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| Assigning CNA | ||
| kernel.org | ||
| Date Record Created | ||
| 20241229 | Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE. | |
| Phase (Legacy) | ||
| Assigned (20241229) | ||
| Votes (Legacy) | ||
| Comments (Legacy) | ||
| Proposed (Legacy) | ||
| N/A | ||
| This is an record on the CVE List, which provides common identifiers for publicly known cybersecurity vulnerabilities. | ||
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