BUG: unable to handle page fault for address: ffffffffff600000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD d335067 P4D d335067 PUD d337067 PMD d35a067 PTE 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5431 Comm: dhcpcd-run-hook Not tainted 6.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:strncpy_from_kernel_nofault+0x8d/0x1c0 mm/maccess.c:91 Code: 00 48 89 d0 48 c1 e8 03 48 89 44 24 10 0f b6 04 28 84 c0 48 89 14 24 0f 85 d5 00 00 00 ff 02 45 31 f6 49 89 df 48 8b 54 24 08 <42> 8a 1c 33 4a 8d 3c 32 48 89 f8 48 c1 e8 03 49 89 ec 0f b6 04 28 RSP: 0018:ffffc900047074c8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff88802700bb80 RDX: ffffc90004707540 RSI: ffffffffff600000 RDI: ffffffffff600000 RBP: dffffc0000000000 R08: ffffffff813ffb7d R09: 1ffffffff2125a5c R10: dffffc0000000000 R11: fffffbfff2125a5d R12: ffffffffff600000 R13: 0000000000000005 R14: 0000000000000000 R15: ffffffffff600000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 000000001f1b3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_probe_read_kernel_str_common kernel/trace/bpf_trace.c:266 [inline] ____bpf_probe_read_kernel_str kernel/trace/bpf_trace.c:275 [inline] bpf_probe_read_kernel_str+0x2a/0x70 kernel/trace/bpf_trace.c:272 bpf_prog_ef3a4661c9d1378e+0x4a/0x4c 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+0x201/0x420 kernel/trace/bpf_trace.c:2420 trace_kfree include/trace/events/kmem.h:94 [inline] kfree+0x25d/0x340 mm/slub.c:4396 vma_numab_state_free include/linux/mm.h:638 [inline] __vm_area_free+0x41/0x80 kernel/fork.c:505 remove_vma mm/mmap.c:146 [inline] exit_mmap+0x726/0xd80 mm/mmap.c:3303 __mmput+0x115/0x3c0 kernel/fork.c:1343 exec_mmap+0x669/0x700 fs/exec.c:1051 begin_new_exec+0x119a/0x1ce0 fs/exec.c:1310 load_elf_binary+0x95d/0x2590 fs/binfmt_elf.c:996 search_binary_handler fs/exec.c:1783 [inline] exec_binprm fs/exec.c:1825 [inline] bprm_execve+0xaf5/0x1840 fs/exec.c:1877 do_execveat_common+0x552/0x6f0 fs/exec.c:1984 do_execve fs/exec.c:2058 [inline] __do_sys_execve fs/exec.c:2134 [inline] __se_sys_execve fs/exec.c:2129 [inline] __x64_sys_execve+0x92/0xa0 fs/exec.c:2129 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x85/0x160 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fa14afd6ef7 Code: Unable to access opcode bytes at 0x7fa14afd6ecd. RSP: 002b:00007ffd5fba1e98 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 00005561a1467ec0 RCX: 00007fa14afd6ef7 RDX: 00005561a1467f08 RSI: 00005561a1467ec0 RDI: 00005561a1467f98 RBP: 00005561a1467f98 R08: 00005561a1467f9d R09: 00007ffd5fba6e92 R10: 00007fa14b1cf088 R11: 0000000000000246 R12: 00005561a1467f08 R13: 00007fa14b184904 R14: 00005561a1467f08 R15: 0000000000000000 Modules linked in: CR2: ffffffffff600000 ---[ end trace 0000000000000000 ]--- RIP: 0010:strncpy_from_kernel_nofault+0x8d/0x1c0 mm/maccess.c:91 Code: 00 48 89 d0 48 c1 e8 03 48 89 44 24 10 0f b6 04 28 84 c0 48 89 14 24 0f 85 d5 00 00 00 ff 02 45 31 f6 49 89 df 48 8b 54 24 08 <42> 8a 1c 33 4a 8d 3c 32 48 89 f8 48 c1 e8 03 49 89 ec 0f b6 04 28 RSP: 0018:ffffc900047074c8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff88802700bb80 RDX: ffffc90004707540 RSI: ffffffffff600000 RDI: ffffffffff600000 RBP: dffffc0000000000 R08: ffffffff813ffb7d R09: 1ffffffff2125a5c R10: dffffc0000000000 R11: fffffbfff2125a5d R12: ffffffffff600000 R13: 0000000000000005 R14: 0000000000000000 R15: ffffffffff600000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa14afd6ecd CR3: 000000001f1b3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 48 89 add %cl,-0x77(%rax) 3: d0 48 c1 rorb -0x3f(%rax) 6: e8 03 48 89 44 call 0x4489480e b: 24 10 and $0x10,%al d: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax 11: 84 c0 test %al,%al 13: 48 89 14 24 mov %rdx,(%rsp) 17: 0f 85 d5 00 00 00 jne 0xf2 1d: ff 02 incl (%rdx) 1f: 45 31 f6 xor %r14d,%r14d 22: 49 89 df mov %rbx,%r15 25: 48 8b 54 24 08 mov 0x8(%rsp),%rdx * 2a: 42 8a 1c 33 mov (%rbx,%r14,1),%bl <-- trapping instruction 2e: 4a 8d 3c 32 lea (%rdx,%r14,1),%rdi 32: 48 89 f8 mov %rdi,%rax 35: 48 c1 e8 03 shr $0x3,%rax 39: 49 89 ec mov %rbp,%r12 3c: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax