------------[ cut here ]------------ kernel BUG at mm/memory.c:2218! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3606 Comm: syz-executor259 Not tainted 6.0.0-syzkaller-02734-g0326074ff465 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:vmf_insert_pfn_prot+0x40b/0x420 mm/memory.c:2218 Code: 92 c6 31 ff e8 c6 fe c1 ff 84 db 74 2b e8 dd fb c1 ff e9 87 fd ff ff e8 d3 fb c1 ff 0f 0b e8 cc fb c1 ff 0f 0b e8 c5 fb c1 ff <0f> 0b e8 de 49 63 08 e8 b9 fb c1 ff 0f 0b e8 b2 fb c1 ff 0f 0b 55 RSP: 0018:ffffc90003d5f840 EFLAGS: 00010293 RAX: ffffffff81c4d10b RBX: 0000000000000420 RCX: ffff88802649d880 RDX: 0000000000000000 RSI: 0000000000000420 RDI: 0000000000000420 RBP: ffffc90003d5f900 R08: ffffffff81c4cdff R09: ffffffff81c4cdd3 R10: 0000000000000002 R11: ffff88802649d880 R12: 000000000c040471 R13: ffff888020314318 R14: ffffc90003d5f880 R15: 000000000001e18c FS: 00005555559083c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 000000006fced000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_gem_shmem_fault+0x1db/0x240 drivers/gpu/drm/drm_gem_shmem_helper.c:562 __do_fault+0x139/0x4f0 mm/memory.c:4173 do_read_fault mm/memory.c:4524 [inline] do_fault mm/memory.c:4653 [inline] handle_pte_fault mm/memory.c:4917 [inline] __handle_mm_fault mm/memory.c:5059 [inline] handle_mm_fault+0x2804/0x3590 mm/memory.c:5157 do_user_addr_fault+0x69b/0xcb0 arch/x86/mm/fault.c:1407 handle_page_fault arch/x86/mm/fault.c:1498 [inline] exc_page_fault+0x7a/0x110 arch/x86/mm/fault.c:1554 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:copy_user_short_string+0xa/0x40 arch/x86/lib/copy_user_64.S:232 Code: 83 f8 12 74 0a 89 d1 f3 a4 89 c8 0f 01 ca c3 89 d0 0f 01 ca c3 01 ca eb e7 0f 1f 80 00 00 00 00 89 d1 83 e2 07 c1 e9 03 74 12 <4c> 8b 06 4c 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 RSP: 0018:ffffc90003d5fdb0 EFLAGS: 00050206 RAX: ffffffff84312501 RBX: 00007fffffffefe8 RCX: 0000000000000003 RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffc90003d5fe60 RBP: ffffc90003d5fee8 R08: dffffc0000000000 R09: fffff520007abfcf R10: fffff520007abfcf R11: 1ffff920007abfcc R12: 0000000000000018 R13: ffffc90003d5fe60 R14: ffffc90003d5fe60 R15: 0000000020000000 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+0xf0/0x160 lib/usercopy.c:16 copy_from_user include/linux/uaccess.h:152 [inline] copy_dev_ioctl fs/autofs/dev-ioctl.c:86 [inline] _autofs_dev_ioctl fs/autofs/dev-ioctl.c:620 [inline] autofs_dev_ioctl+0x132/0xb20 fs/autofs/dev-ioctl.c:693 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f630146c2f9 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff3af30278 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fff3af30288 RCX: 00007f630146c2f9 RDX: 0000000020000000 RSI: 00000000c0189378 RDI: 0000000000000003 RBP: 00007fff3af30280 R08: 00007fff3af30280 R09: 00007f630142f1c0 R10: 00007fff3af30280 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:vmf_insert_pfn_prot+0x40b/0x420 mm/memory.c:2218 Code: 92 c6 31 ff e8 c6 fe c1 ff 84 db 74 2b e8 dd fb c1 ff e9 87 fd ff ff e8 d3 fb c1 ff 0f 0b e8 cc fb c1 ff 0f 0b e8 c5 fb c1 ff <0f> 0b e8 de 49 63 08 e8 b9 fb c1 ff 0f 0b e8 b2 fb c1 ff 0f 0b 55 RSP: 0018:ffffc90003d5f840 EFLAGS: 00010293 RAX: ffffffff81c4d10b RBX: 0000000000000420 RCX: ffff88802649d880 RDX: 0000000000000000 RSI: 0000000000000420 RDI: 0000000000000420 RBP: ffffc90003d5f900 R08: ffffffff81c4cdff R09: ffffffff81c4cdd3 R10: 0000000000000002 R11: ffff88802649d880 R12: 000000000c040471 R13: ffff888020314318 R14: ffffc90003d5f880 R15: 000000000001e18c FS: 00005555559083c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff3af2f270 CR3: 000000006fced000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 83 f8 12 cmp $0x12,%eax 3: 74 0a je 0xf 5: 89 d1 mov %edx,%ecx 7: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) 9: 89 c8 mov %ecx,%eax b: 0f 01 ca clac e: c3 retq f: 89 d0 mov %edx,%eax 11: 0f 01 ca clac 14: c3 retq 15: 01 ca add %ecx,%edx 17: eb e7 jmp 0x0 19: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 20: 89 d1 mov %edx,%ecx 22: 83 e2 07 and $0x7,%edx 25: c1 e9 03 shr $0x3,%ecx 28: 74 12 je 0x3c * 2a: 4c 8b 06 mov (%rsi),%r8 <-- trapping instruction 2d: 4c 89 07 mov %r8,(%rdi) 30: 48 8d 76 08 lea 0x8(%rsi),%rsi 34: 48 8d 7f 08 lea 0x8(%rdi),%rdi 38: ff c9 dec %ecx 3a: 75 ee jne 0x2a 3c: 21 d2 and %edx,%edx 3e: 74 10 je 0x50