{"id":"CVE-2022-48922","aliases":["DEBIAN-CVE-2022-48922","EUVD-2022-53801","GHSA-cp82-8q86-pm99","UBUNTU-CVE-2022-48922"],"status":"published","title":"riscv: fix oops caused by irqsoff latency tracer","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: fix oops caused by irqsoff latency tracer\n\nThe trace_hardirqs_{on,off}() require the caller to setup frame pointer\nproperly. This because these two functions use macro 'CALLER_ADDR1' (aka.\n__builtin_return_address(1)) to acquire caller info. If the $fp is used\nfor other purpose, the code generated this macro (as below) could trigger\nmemory access fault.\n\n   0xffffffff8011510e \u003c+80\u003e:    ld      a1,-16(s0)\n   0xffffffff80115112 \u003c+84\u003e:    ld      s2,-8(a1)  # \u003c-- paging fault here\n\nThe oops message during booting if compiled with 'irqoff' tracer enabled:\n[    0.039615][    T0] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000f8\n[    0.041925][    T0] Oops [#1]\n[    0.042063][    T0] Modules linked in:\n[    0.042864][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.17.0-rc1-00233-g9a20c48d1ed2 #29\n[    0.043568][    T0] Hardware name: riscv-virtio,qemu (DT)\n[    0.044343][    T0] epc : trace_hardirqs_on+0x56/0xe2\n[    0.044601][    T0]  ra : restore_all+0x12/0x6e\n[    0.044721][    T0] epc : ffffffff80126a5c ra : ffffffff80003b94 sp : ffffffff81403db0\n[    0.044801][    T0]  gp : ffffffff8163acd8 tp : ffffffff81414880 t0 : 0000000000000020\n[    0.044882][    T0]  t1 : 0098968000000000 t2 : 0000000000000000 s0 : ffffffff81403de0\n[    0.044967][    T0]  s1 : 0000000000000000 a0 : 0000000000000001 a1 : 0000000000000100\n[    0.045046][    T0]  a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000\n[    0.045124][    T0]  a5 : 0000000000000000 a6 : 0000000000000000 a7 : 0000000054494d45\n[    0.045210][    T0]  s2 : ffffffff80003b94 s3 : ffffffff81a8f1b0 s4 : ffffffff80e27b50\n[    0.045289][    T0]  s5 : ffffffff81414880 s6 : ffffffff8160fa00 s7 : 00000000800120e8\n[    0.045389][    T0]  s8 : 0000000080013100 s9 : 000000000000007f s10: 0000000000000000\n[    0.045474][    T0]  s11: 0000000000000000 t3 : 7fffffffffffffff t4 : 0000000000000000\n[    0.045548][    T0]  t5 : 0000000000000000 t6 : ffffffff814aa368\n[    0.045620][    T0] status: 0000000200000100 badaddr: 00000000000000f8 cause: 000000000000000d\n[    0.046402][    T0] [\u003cffffffff80003b94\u003e] restore_all+0x12/0x6e\n\nThis because the $fp(aka. $s0) register is not used as frame pointer in the\nassembly entry code.\n\n\tresume_kernel:\n\t\tREG_L s0, TASK_TI_PREEMPT_COUNT(tp)\n\t\tbnez s0, restore_all\n\t\tREG_L s0, TASK_TI_FLAGS(tp)\n                andi s0, s0, _TIF_NEED_RESCHED\n                beqz s0, restore_all\n                call preempt_schedule_irq\n                j restore_all\n\nTo fix above issue, here we add one extra level wrapper for function\ntrace_hardirqs_{on,off}() so they can be safely called by low level entry\ncode.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00207,"percentile":0.10848,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2024-08-22T01:32:55Z","modified":"2026-10-28T02:30:26Z","fixes":[{"ecosystem":"Linux","package":"Kernel","fixed_in":["5.10.103","5.15.26","5.16.12"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"linux","fixed_in":["5.16.12-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"linux","fixed_in":["5.16.12-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"linux","fixed_in":["5.16.12-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"linux-intel-iotg-5.15","fixed_in":["5.15.0-1008.11~20.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Linux","package":"Kernel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.9.0"},{"fixed":"5.10.103"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.26"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.16.12"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.16.12-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.16.12-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.16.12-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"linux-hwe-edge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.0-28.30~16.04.1","4.8.0-30.32~16.04.1","4.8.0-32.34~16.04.1","4.8.0-34.36~16.04.1","4.10.0-14.16~16.04.1","4.10.0-19.21~16.04.1","4.10.0-20.22~16.04.1","4.10.0-21.23~16.04.1","4.10.0-22.24~16.04.1","4.10.0-24.28~16.04.1","4.10.0-26.30~16.04.1","4.11.0-13.19~16.04.1","4.11.0-14.20~16.04.1","4.13.0-16.19~16.04.3","4.13.0-17.20~16.04.1","4.13.0-19.22~16.04.1","4.13.0-21.24~16.04.1","4.13.0-25.29~16.04.2","4.15.0-13.14~16.04.1","4.15.0-15.16~16.04.1","4.15.0-20.21~16.04.1","4.15.0-22.24~16.04.1","4.15.0-23.25~16.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-aws-5.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.0-1021.24~18.04.1","5.0.0-1022.25~18.04.1","5.0.0-1023.26~18.04.1","5.0.0-1024.27~18.04.1","5.0.0-1025.28","5.0.0-1027.30"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-aws-5.3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.0-1016.17~18.04.1","5.3.0-1017.18~18.04.1","5.3.0-1019.21~18.04.1","5.3.0-1023.25~18.04.1","5.3.0-1028.30~18.04.1","5.3.0-1030.32~18.04.1","5.3.0-1032.34~18.04.2","5.3.0-1033.35","5.3.0-1034.36","5.3.0-1035.37"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-azure","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.15.0-1002.2","4.15.0-1003.3","4.15.0-1004.4","4.15.0-1008.8","4.15.0-1009.9","4.15.0-1012.12","4.15.0-1013.13","4.15.0-1014.14","4.15.0-1018.18","4.15.0-1019.19","4.15.0-1021.21","4.15.0-1022.23","4.15.0-1023.24","4.15.0-1025.26","4.15.0-1028.29","4.15.0-1030.31","4.15.0-1031.32","4.15.0-1032.33","4.15.0-1035.36","4.15.0-1036.38","4.15.0-1037.39","4.18.0-1011.11~18.04.1","4.18.0-1013.13~18.04.1","4.18.0-1014.14~18.04.1","4.18.0-1018.18~18.04.1","4.18.0-1019.19~18.04.1","4.18.0-1020.20~18.04.1","4.18.0-1023.24~18.04.1","4.18.0-1024.25~18.04.1","4.18.0-1025.27~18.04.1","5.0.0-1014.14~18.04.1","5.0.0-1016.17~18.04.1","5.0.0-1018.19~18.04.1","5.0.0-1020.21~18.04.1","5.0.0-1022.23~18.04.1","5.0.0-1023.24~18.04.1","5.0.0-1025.27~18.04.1","5.0.0-1027.29~18.04.1","5.0.0-1028.30~18.04.1","5.0.0-1029.31~18.04.1","5.0.0-1031.33","5.0.0-1032.34","5.0.0-1035.37","5.0.0-1036.38"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-azure-5.3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.0-1007.8~18.04.1","5.3.0-1008.9~18.04.1","5.3.0-1009.10~18.04.1","5.3.0-1010.11~18.04.1","5.3.0-1012.13~18.04.1","5.3.0-1013.14~18.04.1","5.3.0-1016.17~18.04.1","5.3.0-1018.19~18.04.1","5.3.0-1019.20~18.04.1","5.3.0-1020.21~18.04.1","5.3.0-1022.23~18.04.1","5.3.0-1028.29~18.04.1","5.3.0-1031.32~18.04.1","5.3.0-1032.33~18.04.1","5.3.0-1034.35~18.04.1","5.3.0-1035.36"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-azure-edge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.18.0-1006.6~18.04.1","4.18.0-1007.7~18.04.1","4.18.0-1008.8~18.04.1","5.0.0-1012.12~18.04.2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-gcp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.15.0-1001.1","4.15.0-1003.3","4.15.0-1005.5","4.15.0-1006.6","4.15.0-1008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fix oops caused by irqsoff latency tracer","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: fix oops caused by irqsoff latency tracer\n\nThe trace_hardirqs_{on,off}() require the caller to setup frame pointer\nproperly. This because these two functions use macro 'CALLER_ADDR1' (aka.\n__builtin_return_address(1)) to acquire caller info. If the $fp is used\nfor other purpose, the code generated this macro (as below) could trigger\nmemory access fault.\n\n   0xffffffff8011510e \u003c+80\u003e:    ld      a1,-16(s0)\n   0xffffffff80115112 \u003c+84\u003e:    ld      s2,-8(a1)  # \u003c-- paging fault here\n\nThe oops message during booting if compiled with 'irqoff' tracer enabled:\n[    0.039615][    T0] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000f8\n[    0.041925][    T0] Oops [#1]\n[    0.042063][    T0] Modules linked in:\n[    0.042864][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.17.0-rc1-00233-g9a20c48d1ed2 #29\n[    0.043568][    T0] Hardware name: riscv-virtio,qemu (DT)\n[    0.044343][    T0] epc : trace_hardirqs_on+0x56/0xe2\n[    0.044601][    T0]  ra : restore_all+0x12/0x6e\n[    0.044721][    T0] epc : ffffffff80126a5c ra : ffffffff80003b94 sp : ffffffff81403db0\n[    0.044801][    T0]  gp : ffffffff8163acd8 tp : ffffffff81414880 t0 : 0000000000000020\n[    0.044882][    T0]  t1 : 0098968000000000 t2 : 0000000000000000 s0 : ffffffff81403de0\n[    0.044967][    T0]  s1 : 0000000000000000 a0 : 0000000000000001 a1 : 0000000000000100\n[    0.045046][    T0]  a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000\n[    0.045124][    T0]  a5 : 0000000000000000 a6 : 0000000000000000 a7 : 0000000054494d45\n[    0.045210][    T0]  s2 : ffffffff80003b94 s3 : ffffffff81a8f1b0 s4 : ffffffff80e27b50\n[    0.045289][    T0]  s5 : ffffffff81414880 s6 : ffffffff8160fa00 s7 : 00000000800120e8\n[    0.045389][    T0]  s8 : 0000000080013100 s9 : 000000000000007f s10: 0000000000000000\n[    0.045474][    T0]  s11: 0000000000000000 t3 : 7fffffffffffffff t4 : 0000000000000000\n[    0.045548][    T0]  t5 : 0000000000000000 t6 : ffffffff814aa368\n[    0.045620][    T0] status: 0000000200000100 badaddr: 00000000000000f8 cause: 000000000000000d\n[    0.046402][    T0] [\u003cffffffff80003b94\u003e] restore_all+0x12/0x6e\n\nThis because the $fp(aka. $s0) register is not used as frame pointer in the\nassembly entry code.\n\n\tresume_kernel:\n\t\tREG_L s0, TASK_TI_PREEMPT_COUNT(tp)\n\t\tbnez s0, restore_all\n\t\tREG_L s0, TASK_TI_FLAGS(tp)\n                andi s0, s0, _TIF_NEED_RESCHED\n                beqz s0, restore_all\n                call preempt_schedule_irq\n                j restore_all\n\nTo fix above issue, here we add one extra level wrapper for function\ntrace_hardirqs_{on,off}() so they can be safely called by low level entry\ncode.","status":"published","published":"2024-08-22T01:32:55.803Z","modified":"2026-05-11T18:49:44.802Z","updated_at":"2026-11-02T14:34:33.913527Z"}],"euvd":[{"id":"EUVD-2022-53801","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: fix oops caused by irqsoff latency tracer\n\nThe trace_hardirqs_{on,off}() require the caller to setup frame pointer\nproperly. This because these two functions use macro 'CALLER_ADDR1' (aka.\n__builtin_return_address(1)) to acquire caller info. If the $fp is used\nfor other purpose, the code generated this macro (as below) could trigger\nmemory access fault.\n\n   0xffffffff8011510e \u003c+80\u003e:    ld      a1,-16(s0)\n   0xffffffff80115112 \u003c+84\u003e:    ld      s2,-8(a1)  # \u003c-- paging fault here\n\nThe oops message during booting if compiled with 'irqoff' tracer enabled:\n[    0.039615][    T0] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000f8\n[    0.041925][    T0] Oops [#1]\n[    0.042063][    T0] Modules linked in:\n[    0.042864][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.17.0-rc1-00233-g9a20c48d1ed2 #29\n[    0.043568][    T0] Hardware name: riscv-virtio,qemu (DT)\n[    0.044343][    T0] epc : trace_hardirqs_on+0x56/0xe2\n[    0.044601][    T0]  ra : restore_all+0x12/0x6e\n[    0.044721][    T0] epc : ffffffff80126a5c ra : ffffffff80003b94 sp : ffffffff81403db0\n[    0.044801][    T0]  gp : ffffffff8163acd8 tp : ffffffff81414880 t0 : 0000000000000020\n[    0.044882][    T0]  t1 : 0098968000000000 t2 : 0000000000000000 s0 : ffffffff81403de0\n[    0.044967][    T0]  s1 : 0000000000000000 a0 : 0000000000000001 a1 : 0000000000000100\n[    0.045046][    T0]  a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000\n[    0.045124][    T0]  a5 : 0000000000000000 a6 : 0000000000000000 a7 : 0000000054494d45\n[    0.045210][    T0]  s2 : ffffffff80003b94 s3 : ffffffff81a8f1b0 s4 : ffffffff80e27b50\n[    0.045289][    T0]  s5 : ffffffff81414880 s6 : ffffffff8160fa00 s7 : 00000000800120e8\n[    0.045389][    T0]  s8 : 0000000080013100 s9 : 000000000000007f s10: 0000000000000000\n[    0.045474][    T0]  s11: 0000000000000000 t3 : 7fffffffffffffff t4 : 0000000000000000\n[    0.045548][    T0]  t5 : 0000000000000000 t6 : ffffffff814aa368\n[    0.045620][    T0] status: 0000000200000100 badaddr: 00000000000000f8 cause: 000000000000000d\n[    0.046402][    T0] [\u003cffffffff80003b94\u003e] restore_all+0x12/0x6e\n\nThis because the $fp(aka. $s0) register is not used as frame pointer in the\nassembly entry code.\n\n\tresume_kernel:\n\t\tREG_L s0, TASK_TI_PREEMPT_COUNT(tp)\n\t\tbnez s0, restore_all\n\t\tREG_L s0, TASK_TI_FLAGS(tp)\n                andi s0, s0, _TIF_NEED_RESCHED\n                beqz s0, restore_all\n                call preempt_schedule_irq\n                j restore_all\n\nTo fix above issue, here we add one extra level wrapper for function\ntrace_hardirqs_{on,off}() so they can be safely called by low level entry\ncode.","status":"published","published":"2024-08-22T01:32:55Z","modified":"2026-05-11T18:49:44Z","updated_at":"2026-11-02T19:05:09.551486Z"}],"ghsa":[{"id":"GHSA-cp82-8q86-pm99","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: fix oops caused by...","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: fix oops caused by irqsoff latency tracer\n\nThe trace_hardirqs_{on,off}() require the caller to setup frame pointer\nproperly. This because these two functions use macro 'CALLER_ADDR1' (aka.\n__builtin_return_address(1)) to acquire caller info. If the $fp is used\nfor other purpose, the code generated this macro (as below) could trigger\nmemory access fault.\n\n   0xffffffff8011510e \u003c+80\u003e:    ld      a1,-16(s0)\n   0xffffffff80115112 \u003c+84\u003e:    ld      s2,-8(a1)  # \u003c-- paging fault here\n\nThe oops message during booting if compiled with 'irqoff' tracer enabled:\n[    0.039615][    T0] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000f8\n[    0.041925][    T0] Oops [#1]\n[    0.042063][    T0] Modules linked in:\n[    0.042864][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.17.0-rc1-00233-g9a20c48d1ed2 #29\n[    0.043568][    T0] Hardware name: riscv-virtio,qemu (DT)\n[    0.044343][    T0] epc : trace_hardirqs_on+0x56/0xe2\n[    0.044601][    T0]  ra : restore_all+0x12/0x6e\n[    0.044721][    T0] epc : ffffffff80126a5c ra : ffffffff80003b94 sp : ffffffff81403db0\n[    0.044801][    T0]  gp : ffffffff8163acd8 tp : ffffffff81414880 t0 : 0000000000000020\n[    0.044882][    T0]  t1 : 0098968000000000 t2 : 0000000000000000 s0 : ffffffff81403de0\n[    0.044967][    T0]  s1 : 0000000000000000 a0 : 0000000000000001 a1 : 0000000000000100\n[    0.045046][    T0]  a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000\n[    0.045124][    T0]  a5 : 0000000000000000 a6 : 0000000000000000 a7 : 0000000054494d45\n[    0.045210][    T0]  s2 : ffffffff80003b94 s3 : ffffffff81a8f1b0 s4 : ffffffff80e27b50\n[    0.045289][    T0]  s5 : ffffffff81414880 s6 : ffffffff8160fa00 s7 : 00000000800120e8\n[    0.045389][    T0]  s8 : 0000000080013100 s9 : 000000000000007f s10: 0000000000000000\n[    0.045474][    T0]  s11: 0000000000000000 t3 : 7fffffffffffffff t4 : 0000000000000000\n[    0.045548][    T0]  t5 : 0000000000000000 t6 : ffffffff814aa368\n[    0.045620][    T0] status: 0000000200000100 badaddr: 00000000000000f8 cause: 000000000000000d\n[    0.046402][    T0] [\u003cffffffff80003b94\u003e] restore_all+0x12/0x6e\n\nThis because the $fp(aka. $s0) register is not used as frame pointer in the\nassembly entry code.\n\n\tresume_kernel:\n\t\tREG_L s0, TASK_TI_PREEMPT_COUNT(tp)\n\t\tbnez s0, restore_all\n\t\tREG_L s0, TASK_TI_FLAGS(tp)\n                andi s0, s0, _TIF_NEED_RESCHED\n                beqz s0, restore_all\n                call preempt_schedule_irq\n                j restore_all\n\nTo fix above issue, here we add one extra level wrapper for function\ntrace_hardirqs_{on,off}() so they can be safely called by low level entry\ncode.","status":"published","published":"2024-08-22T03:31:34Z","modified":"2024-09-12T15:34:08Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:58:14.76108Z"}],"nvd":[{"id":"CVE-2022-48922","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: fix oops caused by irqsoff latency tracer\n\nThe trace_hardirqs_{on,off}() require the caller to setup frame pointer\nproperly. This because these two functions use macro 'CALLER_ADDR1' (aka.\n__builtin_return_address(1)) to acquire caller info. If the $fp is used\nfor other purpose, the code generated this macro (as below) could trigger\nmemory access fault.\n\n   0xffffffff8011510e \u003c+80\u003e:    ld      a1,-16(s0)\n   0xffffffff80115112 \u003c+84\u003e:    ld      s2,-8(a1)  # \u003c-- paging fault here\n\nThe oops message during booting if compiled with 'irqoff' tracer enabled:\n[    0.039615][    T0] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000f8\n[    0.041925][    T0] Oops [#1]\n[    0.042063][    T0] Modules linked in:\n[    0.042864][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.17.0-rc1-00233-g9a20c48d1ed2 #29\n[    0.043568][    T0] Hardware name: riscv-virtio,qemu (DT)\n[    0.044343][    T0] epc : trace_hardirqs_on+0x56/0xe2\n[    0.044601][    T0]  ra : restore_all+0x12/0x6e\n[    0.044721][    T0] epc : ffffffff80126a5c ra : ffffffff80003b94 sp : ffffffff81403db0\n[    0.044801][    T0]  gp : ffffffff8163acd8 tp : ffffffff81414880 t0 : 0000000000000020\n[    0.044882][    T0]  t1 : 0098968000000000 t2 : 0000000000000000 s0 : ffffffff81403de0\n[    0.044967][    T0]  s1 : 0000000000000000 a0 : 0000000000000001 a1 : 0000000000000100\n[    0.045046][    T0]  a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000\n[    0.045124][    T0]  a5 : 0000000000000000 a6 : 0000000000000000 a7 : 0000000054494d45\n[    0.045210][    T0]  s2 : ffffffff80003b94 s3 : ffffffff81a8f1b0 s4 : ffffffff80e27b50\n[    0.045289][    T0]  s5 : ffffffff81414880 s6 : ffffffff8160fa00 s7 : 00000000800120e8\n[    0.045389][    T0]  s8 : 0000000080013100 s9 : 000000000000007f s10: 0000000000000000\n[    0.045474][    T0]  s11: 0000000000000000 t3 : 7fffffffffffffff t4 : 0000000000000000\n[    0.045548][    T0]  t5 : 0000000000000000 t6 : ffffffff814aa368\n[    0.045620][    T0] status: 0000000200000100 badaddr: 00000000000000f8 cause: 000000000000000d\n[    0.046402][    T0] [\u003cffffffff80003b94\u003e] restore_all+0x12/0x6e\n\nThis because the $fp(aka. $s0) register is not used as frame pointer in the\nassembly entry code.\n\n\tresume_kernel:\n\t\tREG_L s0, TASK_TI_PREEMPT_COUNT(tp)\n\t\tbnez s0, restore_all\n\t\tREG_L s0, TASK_TI_FLAGS(tp)\n                andi s0, s0, _TIF_NEED_RESCHED\n                beqz s0, restore_all\n                call preempt_schedule_irq\n                j restore_all\n\nTo fix above issue, here we add one extra level wrapper for function\ntrace_hardirqs_{on,off}() so they can be safely called by low level entry\ncode.","status":"published","published":"2024-08-22T02:15:08.267Z","modified":"2026-06-17T05:16:37.41Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:07:40.977475Z"}],"osv":[{"id":"DEBIAN-CVE-2022-48922","description":"In the Linux kernel, the following vulnerability has been resolved:  riscv: fix oops caused by irqsoff latency tracer  The trace_hardirqs_{on,off}() require the caller to setup frame pointer properly. This because these two functions use macro 'CALLER_ADDR1' (aka. __builtin_return_address(1)) to acquire caller info. If the $fp is used for other purpose, the code generated this macro (as below) could trigger memory access fault.     0xffffffff8011510e \u003c+80\u003e:    ld      a1,-16(s0)    0xffffffff80115112 \u003c+84\u003e:    ld      s2,-8(a1)  # \u003c-- paging fault here  The oops message during booting if compiled with 'irqoff' tracer enabled: [    0.039615][    T0] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000f8 [    0.041925][    T0] Oops [#1] [    0.042063][    T0] Modules linked in: [    0.042864][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.17.0-rc1-00233-g9a20c48d1ed2 #29 [    0.043568][    T0] Hardware name: riscv-virtio,qemu (DT) [    0.044343][    T0] epc : trace_hardirqs_on+0x56/0xe2 [    0.044601][    T0]  ra : restore_all+0x12/0x6e [    0.044721][    T0] epc : ffffffff80126a5c ra : ffffffff80003b94 sp : ffffffff81403db0 [    0.044801][    T0]  gp : ffffffff8163acd8 tp : ffffffff81414880 t0 : 0000000000000020 [    0.044882][    T0]  t1 : 0098968000000000 t2 : 0000000000000000 s0 : ffffffff81403de0 [    0.044967][    T0]  s1 : 0000000000000000 a0 : 0000000000000001 a1 : 0000000000000100 [    0.045046][    T0]  a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000 [    0.045124][    T0]  a5 : 0000000000000000 a6 : 0000000000000000 a7 : 0000000054494d45 [    0.045210][    T0]  s2 : ffffffff80003b94 s3 : ffffffff81a8f1b0 s4 : ffffffff80e27b50 [    0.045289][    T0]  s5 : ffffffff81414880 s6 : ffffffff8160fa00 s7 : 00000000800120e8 [    0.045389][    T0]  s8 : 0000000080013100 s9 : 000000000000007f s10: 0000000000000000 [    0.045474][    T0]  s11: 0000000000000000 t3 : 7fffffffffffffff t4 : 0000000000000000 [    0.045548][    T0]  t5 : 0000000000000000 t6 : ffffffff814aa368 [    0.045620][    T0] status: 0000000200000100 badaddr: 00000000000000f8 cause: 000000000000000d [    0.046402][    T0] [\u003cffffffff80003b94\u003e] restore_all+0x12/0x6e  This because the $fp(aka. $s0) register is not used as frame pointer in the assembly entry code.  \tresume_kernel: \t\tREG_L s0, TASK_TI_PREEMPT_COUNT(tp) \t\tbnez s0, restore_all \t\tREG_L s0, TASK_TI_FLAGS(tp)                 andi s0, s0, _TIF_NEED_RESCHED                 beqz s0, restore_all                 call preempt_schedule_irq                 j restore_all  To fix above issue, here we add one extra level wrapper for function trace_hardirqs_{on,off}() so they can be safely called by low level entry code.","status":"published","published":"2024-08-22T02:15:08.267Z","modified":"2026-11-03T08:03:58.064092635Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T08:23:34.488036Z"},{"id":"UBUNTU-CVE-2022-48922","description":"In the Linux kernel, the following vulnerability has been resolved: riscv: fix oops caused by irqsoff latency tracer The trace_hardirqs_{on,off}() require the caller to setup frame pointer properly. This because these two functions use macro 'CALLER_ADDR1' (aka. __builtin_return_address(1)) to acquire caller info. If the $fp is used for other purpose, the code generated this macro (as below) could trigger memory access fault.    0xffffffff8011510e \u003c+80\u003e:    ld      a1,-16(s0)    0xffffffff80115112 \u003c+84\u003e:    ld      s2,-8(a1)  # \u003c-- paging fault here The oops message during booting if compiled with 'irqoff' tracer enabled: [    0.039615][    T0] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000f8 [    0.041925][    T0] Oops [#1] [    0.042063][    T0] Modules linked in: [    0.042864][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.17.0-rc1-00233-g9a20c48d1ed2 #29 [    0.043568][    T0] Hardware name: riscv-virtio,qemu (DT) [    0.044343][    T0] epc : trace_hardirqs_on+0x56/0xe2 [    0.044601][    T0]  ra : restore_all+0x12/0x6e [    0.044721][    T0] epc : ffffffff80126a5c ra : ffffffff80003b94 sp : ffffffff81403db0 [    0.044801][    T0]  gp : ffffffff8163acd8 tp : ffffffff81414880 t0 : 0000000000000020 [    0.044882][    T0]  t1 : 0098968000000000 t2 : 0000000000000000 s0 : ffffffff81403de0 [    0.044967][    T0]  s1 : 0000000000000000 a0 : 0000000000000001 a1 : 0000000000000100 [    0.045046][    T0]  a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000 [    0.045124][    T0]  a5 : 0000000000000000 a6 : 0000000000000000 a7 : 0000000054494d45 [    0.045210][    T0]  s2 : ffffffff80003b94 s3 : ffffffff81a8f1b0 s4 : ffffffff80e27b50 [    0.045289][    T0]  s5 : ffffffff81414880 s6 : ffffffff8160fa00 s7 : 00000000800120e8 [    0.045389][    T0]  s8 : 0000000080013100 s9 : 000000000000007f s10: 0000000000000000 [    0.045474][    T0]  s11: 0000000000000000 t3 : 7fffffffffffffff t4 : 0000000000000000 [    0.045548][    T0]  t5 : 0000000000000000 t6 : ffffffff814aa368 [    0.045620][    T0] status: 0000000200000100 badaddr: 00000000000000f8 cause: 000000000000000d [    0.046402][    T0] [\u003cffffffff80003b94\u003e] restore_all+0x12/0x6e This because the $fp(aka. $s0) register is not used as frame pointer in the assembly entry code. \tresume_kernel: \t\tREG_L s0, TASK_TI_PREEMPT_COUNT(tp) \t\tbnez s0, restore_all \t\tREG_L s0, TASK_TI_FLAGS(tp)                 andi s0, s0, _TIF_NEED_RESCHED                 beqz s0, restore_all                 call preempt_schedule_irq                 j restore_all To fix above issue, here we add one extra level wrapper for function trace_hardirqs_{on,off}() so they can be safely called by low level entry code.","status":"published","published":"2024-08-22T02:15:00Z","modified":"2025-10-24T04:54:54Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:53:58.967204Z"},{"id":"CVE-2022-48922","title":"riscv: fix oops caused by irqsoff latency tracer","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: fix oops caused by irqsoff latency tracer\n\nThe trace_hardirqs_{on,off}() require the caller to setup frame pointer\nproperly. This because these two functions use macro 'CALLER_ADDR1' (aka.\n__builtin_return_address(1)) to acquire caller info. If the $fp is used\nfor other purpose, the code generated this macro (as below) could trigger\nmemory access fault.\n\n   0xffffffff8011510e \u003c+80\u003e:    ld      a1,-16(s0)\n   0xffffffff80115112 \u003c+84\u003e:    ld      s2,-8(a1)  # \u003c-- paging fault here\n\nThe oops message during booting if compiled with 'irqoff' tracer enabled:\n[    0.039615][    T0] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000f8\n[    0.041925][    T0] Oops [#1]\n[    0.042063][    T0] Modules linked in:\n[    0.042864][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.17.0-rc1-00233-g9a20c48d1ed2 #29\n[    0.043568][    T0] Hardware name: riscv-virtio,qemu (DT)\n[    0.044343][    T0] epc : trace_hardirqs_on+0x56/0xe2\n[    0.044601][    T0]  ra : restore_all+0x12/0x6e\n[    0.044721][    T0] epc : ffffffff80126a5c ra : ffffffff80003b94 sp : ffffffff81403db0\n[    0.044801][    T0]  gp : ffffffff8163acd8 tp : ffffffff81414880 t0 : 0000000000000020\n[    0.044882][    T0]  t1 : 0098968000000000 t2 : 0000000000000000 s0 : ffffffff81403de0\n[    0.044967][    T0]  s1 : 0000000000000000 a0 : 0000000000000001 a1 : 0000000000000100\n[    0.045046][    T0]  a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000\n[    0.045124][    T0]  a5 : 0000000000000000 a6 : 0000000000000000 a7 : 0000000054494d45\n[    0.045210][    T0]  s2 : ffffffff80003b94 s3 : ffffffff81a8f1b0 s4 : ffffffff80e27b50\n[    0.045289][    T0]  s5 : ffffffff81414880 s6 : ffffffff8160fa00 s7 : 00000000800120e8\n[    0.045389][    T0]  s8 : 0000000080013100 s9 : 000000000000007f s10: 0000000000000000\n[    0.045474][    T0]  s11: 0000000000000000 t3 : 7fffffffffffffff t4 : 0000000000000000\n[    0.045548][    T0]  t5 : 0000000000000000 t6 : ffffffff814aa368\n[    0.045620][    T0] status: 0000000200000100 badaddr: 00000000000000f8 cause: 000000000000000d\n[    0.046402][    T0] [\u003cffffffff80003b94\u003e] restore_all+0x12/0x6e\n\nThis because the $fp(aka. $s0) register is not used as frame pointer in the\nassembly entry code.\n\n\tresume_kernel:\n\t\tREG_L s0, TASK_TI_PREEMPT_COUNT(tp)\n\t\tbnez s0, restore_all\n\t\tREG_L s0, TASK_TI_FLAGS(tp)\n                andi s0, s0, _TIF_NEED_RESCHED\n                beqz s0, restore_all\n                call preempt_schedule_irq\n                j restore_all\n\nTo fix above issue, here we add one extra level wrapper for function\ntrace_hardirqs_{on,off}() so they can be safely called by low level entry\ncode.","status":"published","published":"2024-08-22T01:32:55.803Z","modified":"2026-10-28T02:30:26.846185717Z","updated_at":"2026-11-02T15:44:28.090335Z"}]}}