drm_fbdev_generic_setup+0x11c/0x330 drivers/gpu/drm/drm_fbdev_generic.c:341 vkms_create drivers/gpu/drm/vkms/vkms_drv.c:226 [inline] vkms_init+0x625/0x760 drivers/gpu/drm/vkms/vkms_drv.c:252 do_one_initcall+0x117/0x630 init/main.c:1232 do_initcall_level init/main.c:1294 [inline] do_initcalls init/main.c:1310 [inline] do_basic_setup init/main.c:1329 [inline] kernel_init_freeable+0x5c2/0x900 init/main.c:1547 page_owner free stack trace missing ------------[ cut here ]------------ kernel BUG at mm/memory.c:2944! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 8339 Comm: syz-executor.1 Not tainted 6.6.0-rc6-syzkaller-00029-g213f891525c2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 RIP: 0010:do_page_mkwrite+0x2d6/0x380 mm/memory.c:2944 Code: 7c 24 18 00 74 5c e8 69 48 c0 ff 81 cd 00 02 00 00 e9 5f ff ff ff e8 59 48 c0 ff 48 c7 c6 a0 3f 99 8a 4c 89 e7 e8 5a 5d fe ff <0f> 0b 4c 89 ef e8 70 00 16 00 e9 55 fd ff ff 4c 89 ef e8 03 01 16 RSP: 0018:ffffc9000328f7d0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801c16bb80 RSI: ffffffff81c781f6 RDI: ffffffff8ae92ca0 RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff1d9c52a R10: ffffffff8ece2957 R11: 0000000000000000 R12: ffffea000520afc0 R13: ffffc9000328f9d0 R14: 0000000000000a15 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0063) knlGS:00000000f7f93b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000c0008c0a1c CR3: 000000005ef49000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: wp_page_shared mm/memory.c:3291 [inline] do_wp_page+0xc66/0x3420 mm/memory.c:3376 handle_pte_fault mm/memory.c:4994 [inline] __handle_mm_fault+0x1d1b/0x3e10 mm/memory.c:5119 handle_mm_fault+0x478/0xa00 mm/memory.c:5284 do_user_addr_fault+0x3d1/0x1000 arch/x86/mm/fault.c:1413 handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x5c/0xd0 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:rep_movs_alternative+0x4a/0x70 arch/x86/lib/copy_user_64.S:71 Code: 75 f1 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb c9 a4 c3 48 89 c8 48 c1 e9 03 83 e0 07 f3 48 a5 89 c1 85 c9 75 b3 RSP: 0018:ffffc9000328fc18 EFLAGS: 00050206 RAX: 0000000000000001 RBX: 0000000000001000 RCX: 0000000000000240 RDX: 0000000000000000 RSI: ffff8880309eadc0 RDI: 0000000020040000 RBP: 000000002003f240 R08: 0000000000000000 R09: ffffed100613d5ff R10: ffff8880309eafff R11: 0000000000000000 R12: ffff8880309ea000 R13: 0000000020040240 R14: 0000000000000000 R15: 0000000009600000 copy_user_generic arch/x86/include/asm/uaccess_64.h:112 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:133 [inline] _copy_to_user lib/usercopy.c:41 [inline] _copy_to_user+0xa8/0xb0 lib/usercopy.c:34 copy_to_user include/linux/uaccess.h:191 [inline] pagemap_read+0x5c3/0x940 fs/proc/task_mmu.c:1724 vfs_read+0x1ce/0x930 fs/read_write.c:468 ksys_pread64+0x172/0x1a0 fs/read_write.c:665 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7f98579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7f935ac EFLAGS: 00000292 ORIG_RAX: 00000000000000b4 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020001240 RDX: 000000000004b000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:do_page_mkwrite+0x2d6/0x380 mm/memory.c:2944 Code: 7c 24 18 00 74 5c e8 69 48 c0 ff 81 cd 00 02 00 00 e9 5f ff ff ff e8 59 48 c0 ff 48 c7 c6 a0 3f 99 8a 4c 89 e7 e8 5a 5d fe ff <0f> 0b 4c 89 ef e8 70 00 16 00 e9 55 fd ff ff 4c 89 ef e8 03 01 16 RSP: 0018:ffffc9000328f7d0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801c16bb80 RSI: ffffffff81c781f6 RDI: ffffffff8ae92ca0 RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff1d9c52a R10: ffffffff8ece2957 R11: 0000000000000000 R12: ffffea000520afc0 R13: ffffc9000328f9d0 R14: 0000000000000a15 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0063) knlGS:00000000f7f93b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000c0008c0a1c CR3: 000000005ef49000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 75 f1 jne 0xfffffff3 2: c3 ret 3: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1) a: 00 00 00 00 e: 66 90 xchg %ax,%ax 10: 48 8b 06 mov (%rsi),%rax 13: 48 89 07 mov %rax,(%rdi) 16: 48 83 c6 08 add $0x8,%rsi 1a: 48 83 c7 08 add $0x8,%rdi 1e: 83 e9 08 sub $0x8,%ecx 21: 74 df je 0x2 23: 83 f9 08 cmp $0x8,%ecx 26: 73 e8 jae 0x10 28: eb c9 jmp 0xfffffff3 * 2a: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction 2c: c3 ret 2d: 48 89 c8 mov %rcx,%rax 30: 48 c1 e9 03 shr $0x3,%rcx 34: 83 e0 07 and $0x7,%eax 37: f3 48 a5 rep movsq %ds:(%rsi),%es:(%rdi) 3a: 89 c1 mov %eax,%ecx 3c: 85 c9 test %ecx,%ecx 3e: 75 b3 jne 0xfffffff3