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: 5503 Comm: dhcpcd-run-hook Not tainted 6.7.0-rc2-syzkaller-00121-g83f2df9d66bc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 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 0a 0d cf ff <48> 8b 45 00 49 89 04 24 48 83 c5 08 49 83 c4 08 48 83 eb 08 e8 f1 RSP: 0018:ffffc900053a76a8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffffffff81b87d4c RDX: ffff88804eec5940 RSI: ffffffff81b87d26 RDI: 0000000000000007 RBP: ffffffffff600000 R08: 0000000000000007 R09: 0000000000000007 R10: 0000000000000008 R11: 0000000000000001 R12: ffffc900053a76f0 R13: ffff88804eec5940 R14: dffffc0000000000 R15: ffff88807a15a758 FS: 00007f72ab3d2380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 0000000028959000 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:2747 [inline] ____bpf_probe_read_kernel kernel/trace/bpf_trace.c:236 [inline] bpf_probe_read_kernel+0x26/0x70 kernel/trace/bpf_trace.c:233 bpf_prog_bd8b22826c103b08+0x42/0x44 bpf_dispatcher_nop_func include/linux/bpf.h:1196 [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:2307 [inline] bpf_trace_run2+0x14e/0x410 kernel/trace/bpf_trace.c:2346 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_check_open_permission+0x2a3/0x3b0 security/tomoyo/file.c:771 tomoyo_file_open security/tomoyo/tomoyo.c:332 [inline] tomoyo_file_open+0xa8/0xd0 security/tomoyo/tomoyo.c:327 security_file_open+0x6a/0xe0 security/security.c:2836 do_dentry_open+0x583/0x18c0 fs/open.c:935 do_open fs/namei.c:3622 [inline] path_openat+0x1e5a/0x2c50 fs/namei.c:3779 do_filp_open+0x1de/0x430 fs/namei.c:3809 do_sys_openat2+0x176/0x1e0 fs/open.c:1440 do_sys_open fs/open.c:1455 [inline] __do_sys_openat fs/open.c:1471 [inline] __se_sys_openat fs/open.c:1466 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1466 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f72ab52a477 Code: 10 00 00 00 44 8b 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 44 89 c2 4c 89 ce bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 10 48 8b 15 82 69 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007ffc3a1eacf8 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f72ab52a477 RDX: 0000000000090800 RSI: 000056160978e160 RDI: 00000000ffffff9c RBP: 0000561609789290 R08: 0000000000090800 R09: 000056160978e160 R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffc3a1eae58 R13: 0000561609789288 R14: 000056160978e187 R15: 0000000000000030 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 0a 0d cf ff <48> 8b 45 00 49 89 04 24 48 83 c5 08 49 83 c4 08 48 83 eb 08 e8 f1 RSP: 0018:ffffc900053a76a8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffffffff81b87d4c RDX: ffff88804eec5940 RSI: ffffffff81b87d26 RDI: 0000000000000007 RBP: ffffffffff600000 R08: 0000000000000007 R09: 0000000000000007 R10: 0000000000000008 R11: 0000000000000001 R12: ffffc900053a76f0 R13: ffff88804eec5940 R14: dffffc0000000000 R15: ffff88807a15a758 FS: 00007f72ab3d2380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 0000000028959000 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 0a 0d cf ff call 0xffcf0d33 * 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: f1 int1