------------[ cut here ]------------
WARNING: CPU: 1 PID: 5713 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 5713 Comm: syz.0.469 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: 0000000000000008 RCX: ffff888023005940
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004600b29
R10: ffffed1004600b29 R11: 1ffff11004600b28 R12: ffff8880230070c8
R13: 00007ffffffff000 R14: ffffc90000dd0da8 R15: 0000000020000000
FS: 00007f2f09f396c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2f09f38f98 CR3: 0000000062502000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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_bcff4640d6a7c5a9+0x5e/0x418
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
asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:684
RIP: 0010:list_add_tail include/linux/list.h:100 [inline]
RIP: 0010:plist_add+0x2cd/0x480 lib/plist.c:101
Code: c1 e8 03 42 80 3c 28 00 4c 8b 7c 24 10 74 08 4c 89 f7 e8 46 b2 bf fd 4d 89 3e eb 0a e8 ac 49 7b fd 48 8b 6c 24 08 4c 8b 34 24 <4d> 8d 7e 08 4d 89 fc 49 c1 ec 03 43 80 3c 2c 00 74 08 4c 89 ff e8
RSP: 0018:ffffc9000322fa10 EFLAGS: 00000287
RAX: ffffffff83fc8037 RBX: ffffc90000e0bdc8 RCX: 0000000000080000
RDX: ffffc90003bc3000 RSI: 000000000000039b RDI: 000000000000039c
RBP: 1ffff920001c17b9 R08: dffffc0000000000 R09: ffffed1004600b2c
R10: ffffed1004600b2c R11: 1ffff11004600b2b R12: ffffc90000e0bdc8
R13: dffffc0000000000 R14: ffffc90000e0bdc8 R15: ffffc9000322fbb0
__queue_me kernel/futex/core.c:2500 [inline]
queue_me kernel/futex/core.c:2519 [inline]
futex_wait_queue_me+0x14a/0x440 kernel/futex/core.c:2846
futex_wait+0x202/0x5c0 kernel/futex/core.c:2964
do_futex+0xd1c/0x1240 kernel/futex/core.c:3982
__do_sys_futex kernel/futex/core.c:4059 [inline]
__se_sys_futex+0x3a3/0x430 kernel/futex/core.c:4040
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: 0033:0x7f2f0bcd1ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2f09f390e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f2f0bf28fa8 RCX: 00007f2f0bcd1ec9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2f0bf28fa8
RBP: 00007f2f0bf28fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2f0bf29038 R14: 00007fffacc792a0 R15: 00007fffacc79388
----------------
Code disassembly (best guess):
0: c1 e8 03 shr $0x3,%eax
3: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
8: 4c 8b 7c 24 10 mov 0x10(%rsp),%r15
d: 74 08 je 0x17
f: 4c 89 f7 mov %r14,%rdi
12: e8 46 b2 bf fd call 0xfdbfb25d
17: 4d 89 3e mov %r15,(%r14)
1a: eb 0a jmp 0x26
1c: e8 ac 49 7b fd call 0xfd7b49cd
21: 48 8b 6c 24 08 mov 0x8(%rsp),%rbp
26: 4c 8b 34 24 mov (%rsp),%r14
* 2a: 4d 8d 7e 08 lea 0x8(%r14),%r15 <-- trapping instruction
2e: 4d 89 fc mov %r15,%r12
31: 49 c1 ec 03 shr $0x3,%r12
35: 43 80 3c 2c 00 cmpb $0x0,(%r12,%r13,1)
3a: 74 08 je 0x44
3c: 4c 89 ff mov %r15,%rdi
3f: e8 .byte 0xe8