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X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR11MB8270 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "BUG:unable_to_handle_page_fault_for_address" on: commit: dabed3419932a68921de5972b24f6a6b7dfd4866 ("modules: switch to execmem API for remapping as RW and restoring ROX") https://git.kernel.org/cgit/linux/kernel/git/rppt/linux.git execmem/x86-rox/v8 in testcase: boot config: x86_64-randconfig-161-20241227 compiler: gcc-12 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +------------------------------------------------+------------+------------+ | | 6a7a9e5b90 | dabed34199 | +------------------------------------------------+------------+------------+ | boot_successes | 30 | 9 | | boot_failures | 0 | 21 | | BUG:unable_to_handle_page_fault_for_address | 0 | 20 | | Oops | 0 | 20 | | RIP:_sub_I_65535_1[fb] | 0 | 4 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 20 | | RIP:_sub_I_65535_1[qemu_fw_cfg] | 0 | 2 | | RIP:_sub_I_65535_1[psmouse] | 0 | 2 | | RIP:_sub_I_65535_1[rapl] | 0 | 2 | | RIP:_sub_I_65535_1[pcspkr] | 0 | 2 | | RIP:_sub_I_65535_1[sha512_ssse3] | 0 | 1 | | RIP:_sub_I_65535_1[sha1_ssse3] | 0 | 1 | | RIP:_sub_I_65535_1[drm_kms_helper] | 0 | 1 | | RIP:_sub_I_65535_1[fuse] | 0 | 1 | | IP-Config:Auto-configuration_of_network_failed | 0 | 1 | | RIP:_sub_I_65535_1[fb_sys_fops] | 0 | 2 | | RIP:_sub_I_65535_1[input_leds] | 0 | 1 | | RIP:_sub_I_65535_1[intel_gtt] | 0 | 1 | +------------------------------------------------+------------+------------+ If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202412301440.1888e8e1-lkp@intel.com [ 111.221665][ T123] BUG: unable to handle page fault for address: ffffffffa014d4c8 [ 111.222351][ T123] #PF: supervisor instruction fetch in kernel mode [ 111.222908][ T123] #PF: error_code(0x0011) - permissions violation [ 111.223470][ T123] PGD 40c3067 P4D 40c3067 PUD 40c4063 PMD 122325063 PTE 800000015194d163 [ 111.224267][ T123] Oops: Oops: 0011 [#1] PREEMPT KASAN [ 111.224747][ T123] CPU: 0 UID: 0 PID: 123 Comm: systemd-udevd Tainted: G T 6.13.0-rc3-00006-gdabed3419932 #1 be760d6cffe1d430d3b268a66fea25ceb7b58953 [ 111.226009][ T123] Tainted: [T]=RANDSTRUCT [ 111.226427][ T123] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 111.227340][ T123] RIP: 0010:_sub_I_65535_1 (scripts/module-common.c:19) fb_sys_fops [ 111.227905][ T123] Code: 5d 00 48 85 db 48 89 d8 75 03 49 63 c4 5a 5b 5d 41 5c 41 5d 41 5e 41 5f c3 be 07 00 00 00 48 c7 c7 60 40 40 a0 e9 6b 16 37 e1 07 00 00 00 48 c7 c7 60 40 40 a0 e9 79 16 37 e1 00 00 00 00 00 All code ======== 0: 5d pop %rbp 1: 00 48 85 add %cl,-0x7b(%rax) 4: db 48 89 fisttpl -0x77(%rax) 7: d8 75 03 fdivs 0x3(%rbp) a: 49 63 c4 movslq %r12d,%rax d: 5a pop %rdx e: 5b pop %rbx f: 5d pop %rbp 10: 41 5c pop %r12 12: 41 5d pop %r13 14: 41 5e pop %r14 16: 41 5f pop %r15 18: c3 ret 19: be 07 00 00 00 mov $0x7,%esi 1e: 48 c7 c7 60 40 40 a0 mov $0xffffffffa0404060,%rdi 25: e9 6b 16 37 e1 jmp 0xffffffffe1371695 2a:* be 07 00 00 00 mov $0x7,%esi <-- trapping instruction 2f: 48 c7 c7 60 40 40 a0 mov $0xffffffffa0404060,%rdi 36: e9 79 16 37 e1 jmp 0xffffffffe13716b4 3b: 00 00 add %al,(%rax) 3d: 00 00 add %al,(%rax) ... Code starting with the faulting instruction =========================================== 0: be 07 00 00 00 mov $0x7,%esi 5: 48 c7 c7 60 40 40 a0 mov $0xffffffffa0404060,%rdi c: e9 79 16 37 e1 jmp 0xffffffffe137168a 11: 00 00 add %al,(%rax) 13: 00 00 add %al,(%rax) ... [ 111.229483][ T123] RSP: 0018:ffffc9000131fa28 EFLAGS: 00210202 [ 111.230009][ T123] RAX: ffffffffa0408000 RBX: ffffffffa0404240 RCX: 0000000000000001 [ 111.230724][ T123] RDX: 1ffffffff4081000 RSI: 00000000033000aa RDI: ffff8881000f5798 [ 111.231510][ T123] RBP: ffff8881000f5780 R08: 0000000000000000 R09: ffff8883adbc41c0 [ 111.232688][ T123] R10: ffffc9000131f7d8 R11: 0000000044cfc41c R12: 0000000000004000 [ 111.233871][ T123] R13: 0000000000001000 R14: 0000000000000001 R15: dffffc0000000000 [ 111.235059][ T123] FS: 0000000000000000(0000) GS:ffffffff840f3000(0063) knlGS:00000000f794fb00 [ 111.236330][ T123] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 111.237286][ T123] CR2: ffffffffa014d4c8 CR3: 0000000157dad000 CR4: 00000000000406f0 [ 111.238490][ T123] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 111.239688][ T123] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 111.240875][ T123] Call Trace: [ 111.241467][ T123] [ 111.241996][ T123] ? __die_body (arch/x86/kernel/dumpstack.c:421) [ 111.242696][ T123] ? _sub_D_65535_0 (drivers/video/fbdev/core/fb_sys_fops.c:18) fb_sys_fops [ 111.244067][ T123] ? page_fault_oops (arch/x86/mm/fault.c:710) [ 111.244870][ T123] ? show_fault_oops (arch/x86/mm/fault.c:643) [ 111.245708][ T123] ? preempt_count_sub (arch/x86/include/asm/preempt.h:84 kernel/sched/core.c:5886) [ 111.246492][ T123] ? fixup_exception (arch/x86/mm/extable.c:321) [ 111.247267][ T123] ? _sub_D_65535_0 (drivers/video/fbdev/core/fb_sys_fops.c:18) fb_sys_fops [ 111.248716][ T123] ? _sub_D_65535_0 (drivers/video/fbdev/core/fb_sys_fops.c:18) fb_sys_fops [ 111.250147][ T123] ? exc_page_fault (arch/x86/mm/fault.c:1479 arch/x86/mm/fault.c:1539) [ 111.250915][ T123] ? asm_exc_page_fault (arch/x86/include/asm/idtentry.h:623) [ 111.251767][ T123] ? _sub_D_65535_0 (drivers/video/fbdev/core/fb_sys_fops.c:18) fb_sys_fops [ 111.253215][ T123] do_init_module (kernel/module/main.c:2788 kernel/module/main.c:2862) [ 111.254038][ T123] init_module_from_file (kernel/module/main.c:3519) [ 111.254912][ T123] ? __ia32_sys_init_module (kernel/module/main.c:3495) [ 111.255784][ T123] ? idempotent_init_module (kernel/module/main.c:3530) [ 111.256700][ T123] ? __lock_release+0x10e/0x386 [ 111.257622][ T123] ? tracer_preempt_on (kernel/trace/trace_irqsoff.c:661) [ 111.258504][ T123] idempotent_init_module (kernel/module/main.c:3531) [ 111.259420][ T123] ? init_module_from_file (kernel/module/main.c:3523) [ 111.260296][ T123] __do_sys_finit_module (include/linux/file.h:62 include/linux/file.h:83 kernel/module/main.c:3554) [ 111.261141][ T123] __do_fast_syscall_32 (arch/x86/entry/common.c:165 arch/x86/entry/common.c:386) [ 111.261992][ T123] do_fast_syscall_32 (arch/x86/entry/common.c:411) [ 111.262816][ T123] entry_SYSENTER_compat_after_hwframe (arch/x86/entry/entry_64_compat.S:127) [ 111.263888][ T123] RIP: 0023:0xf7fb6579 [ 111.264657][ T123] Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 All code ======== 0: b8 01 10 06 03 mov $0x3061001,%eax 5: 74 b4 je 0xffffffffffffffbb 7: 01 10 add %edx,(%rax) 9: 07 (bad) a: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi e: 10 08 adc %cl,(%rax) 10: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi ... 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24:* 89 e5 mov %esp,%ebp <-- trapping instruction 26: 0f 34 sysenter 28: cd 80 int $0x80 2a: 5d pop %rbp 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 ret 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi Code starting with the faulting instruction =========================================== 0: 5d pop %rbp 1: 5a pop %rdx 2: 59 pop %rcx 3: c3 ret 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi f: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20241230/202412301440.1888e8e1-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki