BUG: unable to handle page fault for address: ffff88800f9d9000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 8201067 P4D 8201067 PUD 8202067 PMD e9f5063 PTE 800ffffff0626060 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 UID: 0 PID: 8206 Comm: syz-executor841 Not tainted 6.12.0-rc1 #5 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 RIP: 0010:memcmp+0x32/0x50 data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/lib/string.c:676 Code: 06 48 39 07 75 17 48 83 c7 08 48 83 c6 08 48 83 ea 08 48 83 fa 07 77 e6 48 85 d2 74 20 31 c9 eb 09 48 83 c1 01 48 39 ca 74 0e <0f> b6 04 0f 44 0f b6 04 0e 44 29 c0 74 e9 e9 7b 20 03 00 31 c0 e9 RSP: 0018:ffff88800f7a3990 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88800f9d9000 RCX: 0000000000000000 RDX: 0000000000000004 RSI: ffffffff863584a0 RDI: ffff88800f9d9000 RBP: ffff88800f7a3a50 R08: ffff88800ea75fe4 R09: 0000000000000001 R10: 0000000000000012 R11: 000055556ed5dfff R12: 0000000000000000 R13: ffff88800f7a3b0c R14: 0000000000000000 R15: ffff88800ea75000 FS: 000055556ed3c3c0(0000) GS:ffff88807ee00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88800f9d9000 CR3: 000000000f35c000 CR4: 0000000000350ef0 Call Trace: <TASK> build_id_parse_nofault+0x2f/0x40 data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/lib/buildid.c:338 perf_event_mmap_event data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/kernel/events/core.c:8966 [inline] perf_event_mmap+0x513/0x5a0 data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/kernel/events/core.c:9104 mmap_region+0x33e/0x1370 data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/mm/mmap.c:1530 do_mmap+0x813/0x9d0 data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/mm/mmap.c:496 vm_mmap_pgoff+0xf9/0x1f0 data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/mm/util.c:588 ksys_mmap_pgoff+0x237/0x2e0 data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/mm/mmap.c:542 __do_sys_mmap data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/kernel/sys_x86_64.c:86 [inline] __se_sys_mmap data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/kernel/sys_x86_64.c:79 [inline] __x64_sys_mmap+0x7e/0xb0 data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/kernel/sys_x86_64.c:79 x64_sys_call+0x18be/0x20d0 data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/include/generated/asm/syscalls_64.h:10 do_syscall_x64 data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/entry/common.c:52 [inline] do_syscall_64+0x9e/0x1d0 data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f37d35311cd Code: 28 c3 e8 46 1e 00 00 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd2d369d78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007ffd2d369f88 RCX: 00007f37d35311cd RDX: 0000000000000001 RSI: 0000000000003000 RDI: 0000000020ffa000 RBP: 0000000000000001 R08: 0000000000000004 R09: 000000005e0a6000 R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffd2d369f78 R14: 00007f37d35ae530 R15: 0000000000000001 </TASK> Modules linked in: CR2: ffff88800f9d9000 ---[ end trace 0000000000000000 ]--- RIP: 0010:memcmp+0x32/0x50 data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/lib/string.c:676 Code: 06 48 39 07 75 17 48 83 c7 08 48 83 c6 08 48 83 ea 08 48 83 fa 07 77 e6 48 85 d2 74 20 31 c9 eb 09 48 83 c1 01 48 39 ca 74 0e <0f> b6 04 0f 44 0f b6 04 0e 44 29 c0 74 e9 e9 7b 20 03 00 31 c0 e9 RSP: 0018:ffff88800f7a3990 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88800f9d9000 RCX: 0000000000000000 RDX: 0000000000000004 RSI: ffffffff863584a0 RDI: ffff88800f9d9000 RBP: ffff88800f7a3a50 R08: ffff88800ea75fe4 R09: 0000000000000001 R10: 0000000000000012 R11: 000055556ed5dfff R12: 0000000000000000 R13: ffff88800f7a3b0c R14: 0000000000000000 R15: ffff88800ea75000 FS: 000055556ed3c3c0(0000) GS:ffff88807ee00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88800f9d9000 CR3: 000000000f35c000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 48 39 07 cmp %rax,(%rdi) 3: 75 17 jne 0x1c 5: 48 83 c7 08 add $0x8,%rdi 9: 48 83 c6 08 add $0x8,%rsi d: 48 83 ea 08 sub $0x8,%rdx 11: 48 83 fa 07 cmp $0x7,%rdx 15: 77 e6 ja 0xfffffffd 17: 48 85 d2 test %rdx,%rdx 1a: 74 20 je 0x3c 1c: 31 c9 xor %ecx,%ecx 1e: eb 09 jmp 0x29 20: 48 83 c1 01 add $0x1,%rcx 24: 48 39 ca cmp %rcx,%rdx 27: 74 0e je 0x37 * 29: 0f b6 04 0f movzbl (%rdi,%rcx,1),%eax <-- trapping instruction 2d: 44 0f b6 04 0e movzbl (%rsi,%rcx,1),%r8d 32: 44 29 c0 sub %r8d,%eax 35: 74 e9 je 0x20 37: e9 7b 20 03 00 jmp 0x320b7 3c: 31 c0 xor %eax,%eax 3e: e9 .byte 0xe9