------------[ cut here ]------------
WARNING: CPU: 0 PID: 21891 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 21891 Comm: syz.4.3783 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 5d 94 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e0 90 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000007e30 EFLAGS: 00010006
RAX: ffffffff81a09160 RBX: 0000000000000008 RCX: ffff888016e8bb80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888016e8bb87 R09: 1ffff11002dd1770
R10: dffffc0000000000 R11: ffffed1002dd1771 R12: ffff888016e8d308
R13: 00007ffffffff000 R14: ffffc90000007ea8 R15: 0000000000000000
FS: 00007efc136e86c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c332947 CR3: 000000004ce8e000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_bc47904a6221c669+0x5b/0x148
bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_prog_test_run_raw_tp+0x1cd/0x3f0 net/bpf/test_run.c:335
flush_smp_call_function_queue+0x2a9/0x760 kernel/smp.c:628
__sysvec_call_function_single+0x98/0x240 arch/x86/kernel/smp.c:248
instr_sysvec_call_function_single arch/x86/kernel/smp.c:243 [inline]
sysvec_call_function_single+0x98/0xc0 arch/x86/kernel/smp.c:243
asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:684
RIP: 0010:trace_event_get_offsets_lock include/trace/events/lock.h:39 [inline]
RIP: 0010:perf_trace_lock+0x93/0x390 include/trace/events/lock.h:39
Code: 43 c7 44 25 08 f8 f3 f3 f3 43 c6 44 25 04 00 43 c6 44 25 08 04 48 89 74 24 38 48 8d 5e 18 48 89 d8 48 c1 e8 03 48 89 44 24 28 <42> 80 3c 20 00 74 08 48 89 df e8 ae 7a 61 00 48 89 5c 24 30 48 8b
RSP: 0018:ffffc900031bf540 EFLAGS: 00000a02
RAX: 1ffffffff1863d57 RBX: ffffffff8c31eab8 RCX: dffffc0000000000
RDX: ffffffff88637df5 RSI: ffffffff8c31eaa0 RDI: ffffffff8c1edc20
RBP: ffffc900031bf630 R08: ffffffff8d89dc2f R09: 1ffffffff1b13b85
R10: dffffc0000000000 R11: fffffbfff1b13b86 R12: dffffc0000000000
R13: 1ffff92000637eb0 R14: ffff8880605a2898 R15: ffffffff8c1edc20
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x84a/0x8a0 kernel/locking/lockdep.c:5634
rcu_read_unlock include/linux/rcupdate.h:773 [inline]
inet_twsk_purge+0x7a7/0x840 net/ipv4/inet_timewait_sock.c:309
ops_exit_list net/core/net_namespace.c:177 [inline]
setup_net+0x844/0xa10 net/core/net_namespace.c:365
copy_net_ns+0x348/0x5b0 net/core/net_namespace.c:503
create_new_namespaces+0x3d3/0x6f0 kernel/nsproxy.c:110
copy_namespaces+0x37d/0x3e0 kernel/nsproxy.c:178
copy_process+0x1834/0x3e20 kernel/fork.c:2293
kernel_clone+0x23f/0x990 kernel/fork.c:2679
__do_sys_clone kernel/fork.c:2796 [inline]
__se_sys_clone kernel/fork.c:2780 [inline]
__x64_sys_clone+0x19a/0x210 kernel/fork.c:2780
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7efc1548e629
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efc136e7fd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007efc15707fa0 RCX: 00007efc1548e629
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000061000600
RBP: 00007efc15524b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007efc15708038 R14: 00007efc15707fa0 R15: 00007ffc81a975d8
----------------
Code disassembly (best guess):
0: 43 c7 44 25 08 f8 f3 movl $0xf3f3f3f8,0x8(%r13,%r12,1)
7: f3 f3
9: 43 c6 44 25 04 00 movb $0x0,0x4(%r13,%r12,1)
f: 43 c6 44 25 08 04 movb $0x4,0x8(%r13,%r12,1)
15: 48 89 74 24 38 mov %rsi,0x38(%rsp)
1a: 48 8d 5e 18 lea 0x18(%rsi),%rbx
1e: 48 89 d8 mov %rbx,%rax
21: 48 c1 e8 03 shr $0x3,%rax
25: 48 89 44 24 28 mov %rax,0x28(%rsp)
* 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 ae 7a 61 00 call 0x617ae7
39: 48 89 5c 24 30 mov %rbx,0x30(%rsp)
3e: 48 rex.W
3f: 8b .byte 0x8b