------------[ cut here ]------------ WARNING: CPU: 0 PID: 16996 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Modules linked in: CPU: 0 PID: 16996 Comm: syz.6.4005 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Code: 24 45 31 f6 31 ff 89 de e8 dd 99 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 60 96 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:ffffc90000007e30 EFLAGS: 00010006 RAX: ffffffff81a05c40 RBX: 0000000000000000 RCX: ffff888023110000 RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff888023110007 R09: 1ffff11004622000 R10: dffffc0000000000 R11: ffffed1004622001 R12: ffff888023111788 R13: 00007ffffffff000 R14: ffffc90000007ea8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33c21ff8 CR3: 000000000c08e000 CR4: 00000000003506f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 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_03eebc38237b138e+0x34/0x654 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_prog_test_run_raw_tp+0x1cd/0x3f0 net/bpf/test_run.c:335 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:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:202 Code: 2e 0f 1f 84 00 00 00 00 00 90 53 48 89 fb e8 17 00 00 00 48 8b 3d 00 f0 10 0c 48 89 de 5b e9 b7 57 44 00 00 00 cc cc 00 00 cc <48> 8b 04 24 65 48 8b 0d 14 7d 89 7e 65 8b 15 15 7d 89 7e 81 e2 00 RSP: 0018:ffffc9000329f518 EFLAGS: 00000246 RAX: ffffffff81ad53e8 RBX: ffffea00009a42c8 RCX: ffff888023110000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000329f690 R08: ffff888023110007 R09: 1ffff11004622000 R10: dffffc0000000000 R11: ffffed1004622001 R12: 0000000000000000 R13: ffffea00009a42c0 R14: dffffc0000000000 R15: 1ffffd4000134859 _compound_head include/linux/page-flags.h:198 [inline] PageAnon include/linux/page-flags.h:503 [inline] mm_counter include/linux/mm.h:1984 [inline] zap_pte_range mm/memory.c:1383 [inline] zap_pmd_range mm/memory.c:1505 [inline] zap_pud_range mm/memory.c:1534 [inline] zap_p4d_range mm/memory.c:1555 [inline] unmap_page_range+0xd77/0x2410 mm/memory.c:1576 unmap_vmas+0x131/0x250 mm/memory.c:1653 exit_mmap+0x3b9/0x640 mm/mmap.c:3216 __mmput+0x115/0x390 kernel/fork.c:1128 exit_mm+0x632/0x7b0 kernel/exit.c:551 do_exit+0x5b8/0x2110 kernel/exit.c:871 do_group_exit+0x12c/0x2f0 kernel/exit.c:998 get_signal+0x7eb/0x12e0 kernel/signal.c:2901 arch_do_signal_or_restart+0xe6/0x12a0 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f8506594e59 Code: Unable to access opcode bytes at RIP 0x7f8506594e2f. RSP: 002b:00007f85047ee0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f850680dfa8 RCX: 00007f8506594e59 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f850680dfa8 RBP: 00007f850680dfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f850680e038 R14: 00007ffd7b52e820 R15: 00007ffd7b52e908 ---------------- Code disassembly (best guess): 0: 2e 0f 1f 84 00 00 00 cs nopl 0x0(%rax,%rax,1) 7: 00 00 9: 90 nop a: 53 push %rbx b: 48 89 fb mov %rdi,%rbx e: e8 17 00 00 00 call 0x2a 13: 48 8b 3d 00 f0 10 0c mov 0xc10f000(%rip),%rdi # 0xc10f01a 1a: 48 89 de mov %rbx,%rsi 1d: 5b pop %rbx 1e: e9 b7 57 44 00 jmp 0x4457da 23: 00 00 add %al,(%rax) 25: cc int3 26: cc int3 27: 00 00 add %al,(%rax) 29: cc int3 * 2a: 48 8b 04 24 mov (%rsp),%rax <-- trapping instruction 2e: 65 48 8b 0d 14 7d 89 mov %gs:0x7e897d14(%rip),%rcx # 0x7e897d4a 35: 7e 36: 65 8b 15 15 7d 89 7e mov %gs:0x7e897d15(%rip),%edx # 0x7e897d52 3d: 81 .byte 0x81 3e: e2 00 loop 0x40