BUG: unable to handle page fault for address: ffffffffff600000 #PF: supervisor read access in kernel mode #PF: error_code(0x0001) - permissions violation PGD c691067 P4D c691067 PUD c693067 PMD c6b6067 PTE 800000000c609165 Oops: 0001 [#1] PREEMPT SMP KASAN CPU: 1 PID: 3861 Comm: syz-executor.0 Not tainted 5.15.151-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:strncpy_from_kernel_nofault+0x89/0x1c0 mm/maccess.c:92 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:ffffc90002d47898 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff888022f9d940 RDX: ffffc90002d47928 RSI: ffffffffff600000 RDI: ffffffffff600000 RBP: dffffc0000000000 R08: ffffffff8139a609 R09: ffffed10045f3b29 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000 R13: 0000000000000008 R14: 0000000000000000 R15: ffffffffff600000 FS: 00005555568bb480(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 0000000075992000 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:255 [inline] ____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:303 [inline] bpf_probe_read_compat_str+0x10a/0x180 kernel/trace/bpf_trace.c:296 bpf_prog_f17ebaf3f5f7baf8+0x3a/0x1ec bpf_dispatcher_nop_func include/linux/bpf.h:780 [inline] __bpf_prog_run include/linux/filter.h:625 [inline] bpf_prog_run include/linux/filter.h:632 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline] bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1918 trace_sched_switch include/trace/events/sched.h:220 [inline] __schedule+0x1e8d/0x45b0 kernel/sched/core.c:6373 schedule+0x11b/0x1f0 kernel/sched/core.c:6459 freezable_schedule include/linux/freezer.h:172 [inline] do_nanosleep+0x1bc/0x7b0 kernel/time/hrtimer.c:2045 hrtimer_nanosleep+0x24d/0x490 kernel/time/hrtimer.c:2098 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1313 [inline] __se_sys_clock_nanosleep+0x323/0x3b0 kernel/time/posix-timers.c:1290 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f40a14701b5 Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 b9 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f ba ff ff 48 8b 04 24 48 83 c4 28 f7 d8 RSP: 002b:00007ffccdc84fa0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f40a14701b5 RDX: 00007ffccdc84fe0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffccdc8506c R08: 0000000000000000 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 0000000000011959 R14: 0000000000011951 R15: 0000000000000001 Modules linked in: CR2: ffffffffff600000 ---[ end trace 4f167c7111d56e44 ]--- RIP: 0010:strncpy_from_kernel_nofault+0x89/0x1c0 mm/maccess.c:92 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:ffffc90002d47898 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff888022f9d940 RDX: ffffc90002d47928 RSI: ffffffffff600000 RDI: ffffffffff600000 RBP: dffffc0000000000 R08: ffffffff8139a609 R09: ffffed10045f3b29 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000 R13: 0000000000000008 R14: 0000000000000000 R15: ffffffffff600000 FS: 00005555568bb480(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 0000000075992000 CR4: 00000000003506e0 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