------------[ cut here ]------------ kernel BUG at mm/memory.c:2230! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3977 Comm: syz-executor.0 Not tainted 6.1.87-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:vmf_insert_pfn_prot+0x2b3/0x2d0 mm/memory.c:2230 Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 d7 0b be ff b8 02 00 00 00 eb c4 e8 cb 0b be ff 0f 0b e8 c4 0b be ff 0f 0b e8 bd 0b be ff <0f> 0b e8 36 04 be 08 e8 b1 0b be ff 0f 0b 66 2e 0f 1f 84 00 00 00 RSP: 0018:ffffc90004db7820 EFLAGS: 00010293 RAX: ffffffff81cc83a3 RBX: 0000000000000420 RCX: ffff8880728ebb80 RDX: 0000000000000000 RSI: 0000000000000420 RDI: 0000000000000420 RBP: ffffc90004db78e0 R08: ffffffff81cc81ed R09: ffffffff81cc81c1 R10: 0000000000000002 R11: ffff8880728ebb80 R12: ffffc90004db7860 R13: ffff888027fee798 R14: 1ffff920009b6f08 R15: 000000000c040471 FS: 00007f11c82bd6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000740 CR3: 000000007a758000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_gem_shmem_fault+0x1d9/0x230 drivers/gpu/drm/drm_gem_shmem_helper.c:562 __do_fault+0x136/0x4f0 mm/memory.c:4261 do_read_fault mm/memory.c:4612 [inline] do_fault mm/memory.c:4741 [inline] handle_pte_fault mm/memory.c:5013 [inline] __handle_mm_fault mm/memory.c:5155 [inline] handle_mm_fault+0x3412/0x5340 mm/memory.c:5276 do_user_addr_fault arch/x86/mm/fault.c:1371 [inline] handle_page_fault arch/x86/mm/fault.c:1462 [inline] exc_page_fault+0x26f/0x660 arch/x86/mm/fault.c:1518 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:copy_user_enhanced_fast_string+0xa/0x40 arch/x86/lib/copy_user_64.S:166 Code: ff c9 75 f2 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 8d 0c ca 89 ca eb 20 0f 01 cb 83 fa 40 72 38 89 d1 a4 31 c0 0f 01 ca c3 89 ca eb 0a 66 2e 0f 1f 84 00 00 00 00 00 RSP: 0018:ffffc90004db7d50 EFLAGS: 00050202 RAX: ffffffff84382101 RBX: 00007fffffffefb8 RCX: 0000000000000048 RDX: 0000000000000048 RSI: 0000000020000740 RDI: ffffc90004db7dc0 RBP: ffffc90004db7ef8 R08: dffffc0000000000 R09: fffff520009b6fc1 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000048 R13: 1ffff920009b6fb4 R14: ffffc90004db7dc0 R15: 0000000020000740 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:52 [inline] _copy_from_user+0xf3/0x170 lib/usercopy.c:23 copy_from_user include/linux/uaccess.h:161 [inline] copy_from_bpfptr_offset include/linux/bpfptr.h:53 [inline] copy_from_bpfptr include/linux/bpfptr.h:59 [inline] __sys_bpf+0x226/0x6c0 kernel/bpf/syscall.c:4978 __do_sys_bpf kernel/bpf/syscall.c:5109 [inline] __se_sys_bpf kernel/bpf/syscall.c:5107 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5107 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f11c747de69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f11c82bd0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f11c75abf80 RCX: 00007f11c747de69 RDX: 0000000000000048 RSI: 0000000020000740 RDI: 0000000000000000 RBP: 00007f11c74ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f11c75abf80 R15: 00007ffd7e3fae28 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:vmf_insert_pfn_prot+0x2b3/0x2d0 mm/memory.c:2230 Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 d7 0b be ff b8 02 00 00 00 eb c4 e8 cb 0b be ff 0f 0b e8 c4 0b be ff 0f 0b e8 bd 0b be ff <0f> 0b e8 36 04 be 08 e8 b1 0b be ff 0f 0b 66 2e 0f 1f 84 00 00 00 RSP: 0018:ffffc90004db7820 EFLAGS: 00010293 RAX: ffffffff81cc83a3 RBX: 0000000000000420 RCX: ffff8880728ebb80 RDX: 0000000000000000 RSI: 0000000000000420 RDI: 0000000000000420 RBP: ffffc90004db78e0 R08: ffffffff81cc81ed R09: ffffffff81cc81c1 R10: 0000000000000002 R11: ffff8880728ebb80 R12: ffffc90004db7860 R13: ffff888027fee798 R14: 1ffff920009b6f08 R15: 000000000c040471 FS: 00007f11c82bd6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005566344cf950 CR3: 000000007a758000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: ff c9 dec %ecx 2: 75 f2 jne 0xfffffff6 4: 89 d1 mov %edx,%ecx 6: c1 e9 03 shr $0x3,%ecx 9: 83 e2 07 and $0x7,%edx c: f3 48 a5 rep movsq %ds:(%rsi),%es:(%rdi) f: 89 d1 mov %edx,%ecx 11: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) 13: 31 c0 xor %eax,%eax 15: 0f 01 ca clac 18: c3 ret 19: 8d 0c ca lea (%rdx,%rcx,8),%ecx 1c: 89 ca mov %ecx,%edx 1e: eb 20 jmp 0x40 20: 0f 01 cb stac 23: 83 fa 40 cmp $0x40,%edx 26: 72 38 jb 0x60 28: 89 d1 mov %edx,%ecx * 2a: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction 2c: 31 c0 xor %eax,%eax 2e: 0f 01 ca clac 31: c3 ret 32: 89 ca mov %ecx,%edx 34: eb 0a jmp 0x40 36: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 3d: 00 00 00