------------[ cut here ]------------
WARNING: CPU: 1 PID: 4807 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4807 Comm: syz.1.221 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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:ffffc90000dd0998 EFLAGS: 00010046
RAX: ffffffff819ed760 RBX: 0000000000000000 RCX: ffff88801b8d3b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100371a771
R10: ffffed100371a771 R11: 1ffff1100371a770 R12: ffff88801b8d5308
R13: 00007ffffffff000 R14: ffffc90000dd0a08 R15: 0000000020000000
FS:  00007f6efff786c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3be45c CR3: 00000000590e2000 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_24fd3d61f59b453e+0x3a/0xb1c
 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_run1+0x153/0x2d0 kernel/trace/bpf_trace.c:1914
 trace_workqueue_activate_work+0x13e/0x1a0 include/trace/events/workqueue.h:59
 __queue_work+0x8ec/0xd50 kernel/workqueue.c:1521
 call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1491 [inline]
 __run_timers+0x550/0x7c0 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:strncpy_from_user+0x0/0x360 lib/strncpy_from_user.c:114
Code: c2 fd e9 b2 fe ff ff 89 d9 80 e1 07 38 c1 0f 8c 5f ff ff ff 48 89 df e8 fe 02 c2 fd e9 52 ff ff ff 00 00 cc cc 00 00 cc cc 00 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 18 49 89 d6 49 89 f7 48 89
RSP: 0018:ffffc900034d7bd8 EFLAGS: 00000287
RAX: ffffffff81855458 RBX: ffffc900034d7cb0 RCX: 0000000000080000
RDX: 000000000000007f RSI: 0000200000000040 RDI: ffffc900034d7cb0
RBP: ffffc900034d7db0 R08: dffffc0000000000 R09: ffffc900034d7cb0
R10: fffff5200069afa6 R11: 1ffff9200069af96 R12: ffffc900034d7e00
R13: 1ffff9200069af8c R14: ffffc900034d7e2c R15: 0000200000000040
 strncpy_from_bpfptr include/linux/bpfptr.h:84 [inline]
 bpf_prog_load+0x1a8/0x1550 kernel/bpf/syscall.c:2239
 __sys_bpf+0x4c2/0x670 kernel/bpf/syscall.c:4657
 __do_sys_bpf kernel/bpf/syscall.c:4761 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4759 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759
 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: 0033:0x7f6f01d10ba9
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:00007f6efff78038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f6f01f57fa0 RCX: 00007f6f01d10ba9
RDX: 0000000000000020 RSI: 00002000000000c0 RDI: 0000000000000005
RBP: 00007f6f01d93e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6f01f58038 R14: 00007f6f01f57fa0 R15: 00007fffc26c1b58
 </TASK>