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: 20 Comm: ksoftirqd/1 Not tainted 5.15.148-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:ffffc90000da7868 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff8880129f8000
RDX: ffffc90000da78e0 RSI: ffffffffff600000 RDI: ffffffffff600000
RBP: dffffc0000000000 R08: ffffffff8139a089 R09: fffffbfff1f7a019
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000
R13: 0000000000000005 R14: 0000000000000000 R15: ffffffffff600000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600000 CR3: 000000001c6b8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
bpf_probe_read_kernel_str_common kernel/trace/bpf_trace.c:255 [inline]
____bpf_probe_read_kernel_str kernel/trace/bpf_trace.c:264 [inline]
bpf_probe_read_kernel_str+0x26/0x70 kernel/trace/bpf_trace.c:261
bpf_prog_ef3a4661c9d1378e+0x42/0x574
bpf_dispatcher_nop_func include/linux/bpf.h:776 [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:1883 [inline]
bpf_trace_run2+0x19e/0x340 kernel/trace/bpf_trace.c:1920
__bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:118
trace_kfree include/trace/events/kmem.h:118 [inline]
kfree+0x22f/0x270 mm/slub.c:4549
security_task_free+0x96/0xc0 security/security.c:1673
__put_task_struct+0xf4/0x2b0 kernel/fork.c:756
rcu_do_batch kernel/rcu/tree.c:2523 [inline]
rcu_core+0xa15/0x1650 kernel/rcu/tree.c:2763
__do_softirq+0x3b3/0x93a kernel/softirq.c:558
run_ksoftirqd+0xc1/0x120 kernel/softirq.c:921
smpboot_thread_fn+0x51b/0x9d0 kernel/smpboot.c:164
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
</TASK>
Modules linked in:
CR2: ffffffffff600000
---[ end trace de1f92c8db5ef23f ]---
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:ffffc90000da7868 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff8880129f8000
RDX: ffffc90000da78e0 RSI: ffffffffff600000 RDI: ffffffffff600000
RBP: dffffc0000000000 R08: ffffffff8139a089 R09: fffffbfff1f7a019
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000
R13: 0000000000000005 R14: 0000000000000000 R15: ffffffffff600000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600000 CR3: 000000001c6b8000 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