------------[ cut here ]------------
WARNING: CPU: 0 PID: 4998 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 4998 Comm: syz.0.120 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 0d f6 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 90 f2 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:ffffc90000007d30 EFLAGS: 00010006
RAX: ffffffff819ed980 RBX: 0000000000000008 RCX: ffff888026b33b80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004d66771
R10: ffffed1004d66771 R11: 1ffff11004d66770 R12: ffff888026b35308
R13: 00007ffffffff000 R14: ffffc90000007da8 R15: 0000000020000000
FS: 00005555867ee500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 000000007afb2000 CR4: 00000000003506f0
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_2c2e2930f3e7254b+0x5e/0x4e8
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:blk_needs_flush_plug include/linux/blkdev.h:1240 [inline]
RIP: 0010:sched_submit_work kernel/sched/core.c:6457 [inline]
RIP: 0010:schedule+0x86/0x1e0 kernel/sched/core.c:6475
Code: 29 bf 01 00 00 00 e8 b9 4a a7 f7 48 89 df 40 f6 c5 20 75 07 e8 7b e5 2c fa eb 05 e8 e4 de a2 f7 bf 01 00 00 00 e8 2a 4c a7 f7 <4c> 8d b3 88 12 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c
RSP: 0018:ffffc9000350fbf0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888026b33b80 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8a0b1be0 RDI: 00000000ffffffff
RBP: 0000000040400040 R08: dffffc0000000000 R09: ffffed1017205449
R10: ffffed1017205449 R11: 1ffff11017205448 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888026b33bac R15: ffffc9000350fd80
freezable_schedule include/linux/freezer.h:172 [inline]
do_nanosleep+0x1f1/0x760 kernel/time/hrtimer.c:2026
hrtimer_nanosleep+0x2f7/0x520 kernel/time/hrtimer.c:2079
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1314 [inline]
__se_sys_clock_nanosleep+0x2e6/0x370 kernel/time/posix-timers.c:1291
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: 0033:0x7f6cf71d4005
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 54 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f 55 ff ff 48 8b 04 24 48 83 c4 28 f7 d8
RSP: 002b:00007fff9f371bf0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00007f6cf73f7fa0 RCX: 00007f6cf71d4005
RDX: 00007fff9f371c30 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f6cf73f9da0 R08: 0000000000000000 R09: 00355b3b825ef61e
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000001b6f9
R13: 00007fff9f371d50 R14: ffffffffffffffff R15: 00007fff9f371d70
----------------
Code disassembly (best guess):
0: 29 bf 01 00 00 00 sub %edi,0x1(%rdi)
6: e8 b9 4a a7 f7 call 0xf7a74ac4
b: 48 89 df mov %rbx,%rdi
e: 40 f6 c5 20 test $0x20,%bpl
12: 75 07 jne 0x1b
14: e8 7b e5 2c fa call 0xfa2ce594
19: eb 05 jmp 0x20
1b: e8 e4 de a2 f7 call 0xf7a2df04
20: bf 01 00 00 00 mov $0x1,%edi
25: e8 2a 4c a7 f7 call 0xf7a74c54
* 2a: 4c 8d b3 88 12 00 00 lea 0x1288(%rbx),%r14 <-- trapping instruction
31: 4c 89 f0 mov %r14,%rax
34: 48 c1 e8 03 shr $0x3,%rax
38: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
3d: 74 08 je 0x47
3f: 4c rex.WR