BUG: unable to handle page fault for address: ffffffffff600000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD cd7a067 P4D cd7a067 PUD cd7c067 PMD cd9f067 PTE 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5411 Comm: udevd Not tainted 6.7.0-rc8-syzkaller-02016-g3fbf61207c66 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:copy_from_kernel_nofault mm/maccess.c:36 [inline] RIP: 0010:copy_from_kernel_nofault+0x86/0x240 mm/maccess.c:24 Code: ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ab 01 00 00 41 83 85 6c 17 00 00 01 eb 1e e8 ea bc ce ff <48> 8b 45 00 49 89 04 24 48 83 c5 08 49 83 c4 08 48 83 eb 08 e8 d1 RSP: 0018:ffffc9000461f470 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffffffff81b8c76c RDX: ffff88807dc55940 RSI: ffffffff81b8c746 RDI: 0000000000000007 RBP: ffffffffff600000 R08: 0000000000000007 R09: 0000000000000007 R10: 0000000000000008 R11: 0000000000000003 R12: ffffc9000461f4b8 R13: ffff88807dc55940 R14: dffffc0000000000 R15: ffff888079bbda70 FS: 00007f2352294c80(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 000000007b62c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_probe_read_kernel_common include/linux/bpf.h:2787 [inline] ____bpf_probe_read_kernel kernel/trace/bpf_trace.c:240 [inline] bpf_probe_read_kernel+0x26/0x70 kernel/trace/bpf_trace.c:237 bpf_prog_bd8b22826c103b08+0x42/0x44 bpf_dispatcher_nop_func include/linux/bpf.h:1231 [inline] __bpf_prog_run include/linux/filter.h:651 [inline] bpf_prog_run include/linux/filter.h:658 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline] bpf_trace_run2+0x14e/0x410 kernel/trace/bpf_trace.c:2420 trace_kfree include/trace/events/kmem.h:94 [inline] kfree+0xec/0x150 mm/slab_common.c:1043 tomoyo_realpath_from_path+0xad/0x710 security/tomoyo/realpath.c:250 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_number_perm+0x241/0x580 security/tomoyo/file.c:723 tomoyo_path_mknod+0x10d/0x180 security/tomoyo/tomoyo.c:251 security_path_mknod+0x11a/0x180 security/security.c:1715 may_o_create fs/namei.c:3299 [inline] lookup_open.isra.0+0x53a/0x13b0 fs/namei.c:3440 open_last_lookups fs/namei.c:3546 [inline] path_openat+0x922/0x2c50 fs/namei.c:3776 do_filp_open+0x1de/0x430 fs/namei.c:3809 do_sys_openat2+0x176/0x1e0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1463 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f2351f169a4 Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007ffec28c3710 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f2351f169a4 RDX: 0000000000080241 RSI: 00007ffec28c3c58 RDI: 00000000ffffff9c RBP: 00007ffec28c3c58 R08: 0000000000000004 R09: 0000000000000001 R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000080241 R13: 000055724b96e72e R14: 0000000000000001 R15: 000055724c9e2910 Modules linked in: CR2: ffffffffff600000 ---[ end trace 0000000000000000 ]--- RIP: 0010:copy_from_kernel_nofault mm/maccess.c:36 [inline] RIP: 0010:copy_from_kernel_nofault+0x86/0x240 mm/maccess.c:24 Code: ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ab 01 00 00 41 83 85 6c 17 00 00 01 eb 1e e8 ea bc ce ff <48> 8b 45 00 49 89 04 24 48 83 c5 08 49 83 c4 08 48 83 eb 08 e8 d1 RSP: 0018:ffffc9000461f470 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffffffff81b8c76c RDX: ffff88807dc55940 RSI: ffffffff81b8c746 RDI: 0000000000000007 RBP: ffffffffff600000 R08: 0000000000000007 R09: 0000000000000007 R10: 0000000000000008 R11: 0000000000000003 R12: ffffc9000461f4b8 R13: ffff88807dc55940 R14: dffffc0000000000 R15: ffff888079bbda70 FS: 00007f2352294c80(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 000000007b62c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 03 0f add (%rdi),%ecx 2: b6 14 mov $0x14,%dh 4: 02 48 89 add -0x77(%rax),%cl 7: f8 clc 8: 83 e0 07 and $0x7,%eax b: 83 c0 03 add $0x3,%eax e: 38 d0 cmp %dl,%al 10: 7c 08 jl 0x1a 12: 84 d2 test %dl,%dl 14: 0f 85 ab 01 00 00 jne 0x1c5 1a: 41 83 85 6c 17 00 00 addl $0x1,0x176c(%r13) 21: 01 22: eb 1e jmp 0x42 24: e8 ea bc ce ff call 0xffcebd13 * 29: 48 8b 45 00 mov 0x0(%rbp),%rax <-- trapping instruction 2d: 49 89 04 24 mov %rax,(%r12) 31: 48 83 c5 08 add $0x8,%rbp 35: 49 83 c4 08 add $0x8,%r12 39: 48 83 eb 08 sub $0x8,%rbx 3d: e8 .byte 0xe8 3e: d1 .byte 0xd1