BUG: unable to handle page fault for address: ffffffffff600000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD ce91067 P4D ce91067 PUD ce93067 PMD ceb6067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.1.77-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: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:ffffc90000147868 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff88813fef3b80
RDX: ffffc900001478e0 RSI: ffffffffff600000 RDI: ffffffffff600000
RBP: dffffc0000000000 R08: ffffffff813ddda9 R09: fffffbfff2092245
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000
R13: 0000000000000005 R14: 0000000000000000 R15: ffffffffff600000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600000 CR3: 000000000ce8e000 CR4: 00000000003506f0
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:265 [inline]
____bpf_probe_read_kernel_str kernel/trace/bpf_trace.c:274 [inline]
bpf_probe_read_kernel_str+0x26/0x70 kernel/trace/bpf_trace.c:271
bpf_prog_ef3a4661c9d1378e+0x42/0x44
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:2275 [inline]
bpf_trace_run2+0x1fd/0x410 kernel/trace/bpf_trace.c:2314
__bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:94
trace_kfree include/trace/events/kmem.h:94 [inline]
kfree+0xf6/0x190 mm/slab_common.c:994
security_task_free+0x96/0xc0 security/security.c:1704
__put_task_struct+0xf4/0x280 kernel/fork.c:846
rcu_do_batch kernel/rcu/tree.c:2296 [inline]
rcu_core+0xad4/0x17e0 kernel/rcu/tree.c:2556
__do_softirq+0x2e9/0xa4c kernel/softirq.c:571
run_ksoftirqd+0xc1/0x120 kernel/softirq.c:934
smpboot_thread_fn+0x52c/0xa30 kernel/smpboot.c:164
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</TASK>
Modules linked in:
CR2: ffffffffff600000
---[ end trace 0000000000000000 ]---
RIP: 0010:strncpy_from_kernel_nofault+0x89/0x1c0 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:ffffc90000147868 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff88813fef3b80
RDX: ffffc900001478e0 RSI: ffffffffff600000 RDI: ffffffffff600000
RBP: dffffc0000000000 R08: ffffffff813ddda9 R09: fffffbfff2092245
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000
R13: 0000000000000005 R14: 0000000000000000 R15: ffffffffff600000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600000 CR3: 000000000ce8e000 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