------------[ cut here ]------------
WARNING: CPU: 1 PID: 4188 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4188 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 3d f7 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 c0 f3 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:ffffc90000dd0d30 EFLAGS: 00010006
RAX: ffffffff819ed760 RBX: 0000000000000000 RCX: ffff88807ada5940
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100f5b4b29
R10: ffffed100f5b4b29 R11: 1ffff1100f5b4b28 R12: ffff88807ada70c8
R13: 00007ffffffff000 R14: ffffc90000dd0da8 R15: 0000000000000000
FS:  000055556065a500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc720ebe218 CR3: 000000001ec82000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 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_f3c4d654356a1293+0x34/0xf70
 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_trace_run kernel/trace/bpf_trace.c:1878 [inline]
 bpf_trace_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
 trace_tlb_flush+0xe6/0x110 include/trace/events/tlb.h:38
 flush_tlb_func+0x43f/0x510 arch/x86/mm/tlb.c:855
 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
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:684
RIP: 0010:trace_lock_release include/trace/events/lock.h:58 [inline]
RIP: 0010:lock_release+0xb3/0x870 kernel/locking/lockdep.c:5634
Code: 83 fb 08 0f 83 2e 05 00 00 89 d8 c1 e8 06 48 8d 3c c5 e8 91 69 8d be 08 00 00 00 e8 57 ba 5f 00 89 d8 48 0f a3 05 75 17 0d 0c <73> 0d e8 f6 34 07 00 84 c0 0f 84 34 05 00 00 48 c7 c0 84 c5 69 8d
RSP: 0018:ffffc90002e7f2a0 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff815c7a69
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d6991e8
RBP: ffffc90002e7f3b0 R08: dffffc0000000000 R09: fffffbfff1ad323e
R10: fffffbfff1ad323e R11: 1ffffffff1ad323d R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920005cfe60
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 is_bpf_text_address+0x254/0x270 kernel/bpf/core.c:727
 kernel_text_address kernel/extable.c:151 [inline]
 __kernel_text_address+0x9a/0x100 kernel/extable.c:105
 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
 arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 __kasan_slab_alloc+0x9c/0xd0 mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519
 slab_alloc_node mm/slub.c:3225 [inline]
 kmem_cache_alloc_node+0x12d/0x2d0 mm/slub.c:3261
 __alloc_skb+0xf4/0x750 net/core/skbuff.c:415
 alloc_skb_fclone include/linux/skbuff.h:1212 [inline]
 sk_stream_alloc_skb+0x1fa/0xa60 net/ipv4/tcp.c:889
 tcp_sendmsg_locked+0xc3e/0x3590 net/ipv4/tcp.c:1314
 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 sock_write_iter+0x29c/0x380 net/socket.c:1079
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x712/0xd00 fs/read_write.c:594
 ksys_write+0x14d/0x250 fs/read_write.c:647
 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: 0033:0x7fc72344b940
Code: 40 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d 21 ac 22 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89
RSP: 002b:00007ffe04b36488 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000007cee6c0 RCX: 00007fc72344b940
RDX: 00000000000000b8 RSI: 00007fc720efdf48 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000007 R09: 000000000003fde8
R10: 359ccd17119a2588 R11: 0000000000000202 R12: 00000000000000b8
R13: 00005555606719d0 R14: 00007ffe04b36950 R15: 00007fc720efdf48
 </TASK>
----------------
Code disassembly (best guess):
   0:	83 fb 08             	cmp    $0x8,%ebx
   3:	0f 83 2e 05 00 00    	jae    0x537
   9:	89 d8                	mov    %ebx,%eax
   b:	c1 e8 06             	shr    $0x6,%eax
   e:	48 8d 3c c5 e8 91 69 	lea    -0x72966e18(,%rax,8),%rdi
  15:	8d
  16:	be 08 00 00 00       	mov    $0x8,%esi
  1b:	e8 57 ba 5f 00       	call   0x5fba77
  20:	89 d8                	mov    %ebx,%eax
  22:	48 0f a3 05 75 17 0d 	bt     %rax,0xc0d1775(%rip)        # 0xc0d179f
  29:	0c
* 2a:	73 0d                	jae    0x39 <-- trapping instruction
  2c:	e8 f6 34 07 00       	call   0x73527
  31:	84 c0                	test   %al,%al
  33:	0f 84 34 05 00 00    	je     0x56d
  39:	48 c7 c0 84 c5 69 8d 	mov    $0xffffffff8d69c584,%rax