syzbot

------------[ cut here ]------------
WARNING: CPU: 1 PID: 4182 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4182 Comm: syz-execprog 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:ffffc90000dd0cf0 EFLAGS: 00010006
RAX: ffffffff819ed760 RBX: 0000000000000008 RCX: ffff8880763bd940
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100ec77b29
R10: ffffed100ec77b29 R11: 1ffff1100ec77b28 R12: ffff8880763bf0c8
R13: 00007ffffffff000 R14: ffffc90000dd0d68 R15: 0000000020000000
FS:  000000c00007e098(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 000000007c0a6000 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_bcff4640d6a7c5a9+0x5e/0x52c
 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
 __traceiter_tlb_flush+0x69/0xb0 include/trace/events/tlb.h:38
 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:finish_lock_switch+0x134/0x280 kernel/sched/core.c:4804
Code: be ff ff ff ff e8 4c 7d 55 08 85 c0 74 4a 4d 85 ff 75 66 0f 1f 44 00 00 48 89 df e8 a6 e7 5e 08 e8 c1 75 2a 00 fb 48 83 c4 08 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 48 89 df e8 d9 0f fe ff 43 80 3c
RSP: 0018:ffffc90002e3f968 EFLAGS: 00000282
RAX: 608b8ac1f4132a00 RBX: ffff8880b913a340 RCX: 608b8ac1f4132a00
RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: ffffffff8a59a480
RBP: 1ffff11017227613 R08: dffffc0000000000 R09: ffffed1017227469
R10: ffffed1017227469 R11: 1ffff11017227468 R12: 1ffff110172275c1
R13: dffffc0000000000 R14: ffff8880b913ae08 R15: 0000000000000000
 finish_task_switch+0x12f/0x640 kernel/sched/core.c:4921
 context_switch kernel/sched/core.c:5052 [inline]
 __schedule+0x11c3/0x4390 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 freezable_schedule include/linux/freezer.h:172 [inline]
 do_nanosleep+0x1f1/0x760 kernel/time/hrtimer.c:2049
 hrtimer_nanosleep+0x2f7/0x520 kernel/time/hrtimer.c:2102
 __do_sys_nanosleep kernel/time/hrtimer.c:2137 [inline]
 __se_sys_nanosleep kernel/time/hrtimer.c:2123 [inline]
 __x64_sys_nanosleep+0x229/0x290 kernel/time/hrtimer.c:2123
 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: 0033:0x47fad7
Code: 8b 44 24 20 b9 40 42 0f 00 f7 f1 48 89 04 24 b8 e8 03 00 00 f7 e2 48 89 44 24 08 48 89 e7 be 00 00 00 00 b8 23 00 00 00 0f 05 <48> 83 c4 10 5d c3 cc cc cc b8 ba 00 00 00 0f 05 89 44 24 08 c3 cc
RSP: 002b:000000c00005ff18 EFLAGS: 00000202 ORIG_RAX: 0000000000000023
RAX: ffffffffffffffda RBX: 0000000000000014 RCX: 000000000047fad7
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000c00005ff18
RBP: 000000c00005ff28 R08: 0000000000000273 R09: 002edd0f2a26171c
R10: 000000331c426dcb R11: 0000000000000202 R12: 000000c00005ff18
R13: 000000c00007e008 R14: 000000c000002700 R15: 000000c000002700
 </TASK>
----------------
Code disassembly (best guess):
   0:	be ff ff ff ff       	mov    $0xffffffff,%esi
   5:	e8 4c 7d 55 08       	call   0x8557d56
   a:	85 c0                	test   %eax,%eax
   c:	74 4a                	je     0x58
   e:	4d 85 ff             	test   %r15,%r15
  11:	75 66                	jne    0x79
  13:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  18:	48 89 df             	mov    %rbx,%rdi
  1b:	e8 a6 e7 5e 08       	call   0x85ee7c6
  20:	e8 c1 75 2a 00       	call   0x2a75e6
  25:	fb                   	sti
  26:	48 83 c4 08          	add    $0x8,%rsp
* 2a:	5b                   	pop    %rbx <-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	41 5d                	pop    %r13
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	5d                   	pop    %rbp
  34:	c3                   	ret
  35:	48 89 df             	mov    %rbx,%rdi
  38:	e8 d9 0f fe ff       	call   0xfffe1016
  3d:	43                   	rex.XB
  3e:	80                   	.byte 0x80
  3f:	3c                   	.byte 0x3c