BUG: unable to handle page fault for address: ffffffffff600000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 3024067 P4D 3024067 PUD 3026067 PMD 3049067 PTE 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 2044 Comm: syz-executor.0 Not tainted 6.1.79-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:strncpy_from_kernel_nofault+0x3e/0x80 mm/maccess.c:91 Code: 89 f7 48 89 d6 e8 b2 22 e2 ff 89 c1 48 c7 c0 de ff ff ff 84 c9 74 33 65 48 8b 35 7d c4 d3 7e ff 86 f8 15 00 00 31 c0 48 89 c2 <41> 8a 0c 07 41 88 0c 16 48 8d 42 01 84 c9 74 05 48 39 d8 7c e8 ff RSP: 0018:ffffc9000145fcf0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000008 RCX: 00000000ff600001 RDX: 0000000000000000 RSI: ffff888105ed9b80 RDI: ffffffffff600000 RBP: ffffc90000361090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000000b8d6 R12: 0000000000000000 R13: ffff888105ed9b80 R14: ffffc9000145fdc8 R15: ffffffffff600000 FS: 00007fcac22006c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 000000010e3f3000 CR4: 00000000003506e0 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:265 [inline] ____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:313 [inline] bpf_probe_read_compat_str+0x5c/0x80 kernel/trace/bpf_trace.c:306 ___bpf_prog_run+0x816/0x1b20 kernel/bpf/core.c:1837 __bpf_prog_run32+0xb7/0xe0 kernel/bpf/core.c:2061 bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline] __bpf_prog_run include/linux/filter.h:600 [inline] bpf_prog_run include/linux/filter.h:607 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline] bpf_trace_run4+0x83/0x110 kernel/trace/bpf_trace.c:2314 trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x762/0x890 kernel/sched/core.c:6555 schedule+0x50/0xb0 kernel/sched/core.c:6634 exit_to_user_mode_loop+0x3b/0xc0 kernel/entry/common.c:159 exit_to_user_mode_prepare+0x6c/0xc0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x27/0x1c0 kernel/entry/common.c:297 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fcac267dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fcac2200178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 00007fcac27acf88 RCX: 00007fcac267dda9 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fcac27acf8c RBP: 00007fcac27acf80 R08: 0000000000000010 R09: 00007fcac22006c0 R10: 0000000000000004 R11: 0000000000000246 R12: 00007fcac27acf8c R13: 000000000000000b R14: 00007ffceb0bc9f0 R15: 00007ffceb0bcad8 Modules linked in: CR2: ffffffffff600000 ---[ end trace 0000000000000000 ]--- RIP: 0010:strncpy_from_kernel_nofault+0x3e/0x80 mm/maccess.c:91 Code: 89 f7 48 89 d6 e8 b2 22 e2 ff 89 c1 48 c7 c0 de ff ff ff 84 c9 74 33 65 48 8b 35 7d c4 d3 7e ff 86 f8 15 00 00 31 c0 48 89 c2 <41> 8a 0c 07 41 88 0c 16 48 8d 42 01 84 c9 74 05 48 39 d8 7c e8 ff RSP: 0018:ffffc9000145fcf0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000008 RCX: 00000000ff600001 RDX: 0000000000000000 RSI: ffff888105ed9b80 RDI: ffffffffff600000 RBP: ffffc90000361090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000000b8d6 R12: 0000000000000000 R13: ffff888105ed9b80 R14: ffffc9000145fdc8 R15: ffffffffff600000 FS: 00007fcac22006c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 000000010e3f3000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 f7 mov %esi,%edi 2: 48 89 d6 mov %rdx,%rsi 5: e8 b2 22 e2 ff call 0xffe222bc a: 89 c1 mov %eax,%ecx c: 48 c7 c0 de ff ff ff mov $0xffffffffffffffde,%rax 13: 84 c9 test %cl,%cl 15: 74 33 je 0x4a 17: 65 48 8b 35 7d c4 d3 mov %gs:0x7ed3c47d(%rip),%rsi # 0x7ed3c49c 1e: 7e 1f: ff 86 f8 15 00 00 incl 0x15f8(%rsi) 25: 31 c0 xor %eax,%eax 27: 48 89 c2 mov %rax,%rdx * 2a: 41 8a 0c 07 mov (%r15,%rax,1),%cl <-- trapping instruction 2e: 41 88 0c 16 mov %cl,(%r14,%rdx,1) 32: 48 8d 42 01 lea 0x1(%rdx),%rax 36: 84 c9 test %cl,%cl 38: 74 05 je 0x3f 3a: 48 39 d8 cmp %rbx,%rax 3d: 7c e8 jl 0x27 3f: ff .byte 0xff