BUG: unable to handle page fault for address: ffffc90004341000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 11800067 P4D 11800067 PUD 119c9067 PMD 147138067 PTE 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12750 Comm: syz-executor.3 Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:memset64 arch/x86/include/asm/string_64.h:49 [inline] RIP: 0010:memset_l include/linux/string.h:128 [inline] RIP: 0010:bitfill_aligned drivers/video/fbdev/core/sysfillrect.c:53 [inline] RIP: 0010:bitfill_aligned+0x182/0x210 drivers/video/fbdev/core/sysfillrect.c:25 Code: 08 48 33 45 f8 48 89 45 f8 89 d8 44 29 e8 41 29 c4 e8 f2 df 42 fd 44 89 e0 31 d2 48 89 ef f7 f3 49 89 c4 48 89 c1 48 8b 04 24 48 ab 31 ff 4c 89 f6 e8 b1 dc 42 fd 4d 85 f6 0f 84 69 ff ff ff RSP: 0018:ffffc90015b5f7d8 EFLAGS: 00010212 RAX: 0000000000000000 RBX: 0000000000000040 RCX: 0000000000000123 RDX: 0000000000000000 RSI: ffffffff8439271e RDI: ffffc90004341000 RBP: ffffc90004340000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000323 R13: 0000000000000000 R14: 0000000000000000 R15: 000000000000c8c0 FS: 00007fc0dac91700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90004341000 CR3: 0000000020d58000 CR4: 0000000000350ef0 Call Trace: sys_fillrect+0x431/0x800 drivers/video/fbdev/core/sysfillrect.c:281 drm_fb_helper_sys_fillrect drivers/gpu/drm/drm_fb_helper.c:807 [inline] drm_fbdev_fb_fillrect+0x172/0x360 drivers/gpu/drm/drm_fb_helper.c:2322 bit_clear_margins+0x2d5/0x4b0 drivers/video/fbdev/core/bitblit.c:232 fbcon_clear_margins.constprop.0+0x175/0x1c0 drivers/video/fbdev/core/fbcon.c:1306 fbcon_do_set_font+0x5e1/0x6f0 drivers/video/fbdev/core/fbcon.c:2431 fbcon_set_font+0x89d/0xab0 drivers/video/fbdev/core/fbcon.c:2519 con_font_set drivers/tty/vt/vt.c:4666 [inline] con_font_op+0x73a/0xc90 drivers/tty/vt/vt.c:4710 vt_k_ioctl drivers/tty/vt/vt_ioctl.c:474 [inline] vt_ioctl+0x1efa/0x2b20 drivers/tty/vt/vt_ioctl.c:752 tty_ioctl+0xfab/0x15d0 drivers/tty/tty_io.c:2778 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc0d9a89279 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc0dac91168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fc0d9b9c120 RCX: 00007fc0d9a89279 RDX: 0000000020000440 RSI: 0000000000004b72 RDI: 0000000000000007 RBP: 00007fc0d9ae3189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc8801914f R14: 00007fc0dac91300 R15: 0000000000022000 Modules linked in: CR2: ffffc90004341000 ---[ end trace 0000000000000000 ]--- RIP: 0010:memset64 arch/x86/include/asm/string_64.h:49 [inline] RIP: 0010:memset_l include/linux/string.h:128 [inline] RIP: 0010:bitfill_aligned drivers/video/fbdev/core/sysfillrect.c:53 [inline] RIP: 0010:bitfill_aligned+0x182/0x210 drivers/video/fbdev/core/sysfillrect.c:25 Code: 08 48 33 45 f8 48 89 45 f8 89 d8 44 29 e8 41 29 c4 e8 f2 df 42 fd 44 89 e0 31 d2 48 89 ef f7 f3 49 89 c4 48 89 c1 48 8b 04 24 48 ab 31 ff 4c 89 f6 e8 b1 dc 42 fd 4d 85 f6 0f 84 69 ff ff ff RSP: 0018:ffffc90015b5f7d8 EFLAGS: 00010212 RAX: 0000000000000000 RBX: 0000000000000040 RCX: 0000000000000123 RDX: 0000000000000000 RSI: ffffffff8439271e RDI: ffffc90004341000 RBP: ffffc90004340000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000323 R13: 0000000000000000 R14: 0000000000000000 R15: 000000000000c8c0 FS: 00007fc0dac91700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90004341000 CR3: 0000000020d58000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 08 48 33 or %cl,0x33(%rax) 3: 45 f8 rex.RB clc 5: 48 89 45 f8 mov %rax,-0x8(%rbp) 9: 89 d8 mov %ebx,%eax b: 44 29 e8 sub %r13d,%eax e: 41 29 c4 sub %eax,%r12d 11: e8 f2 df 42 fd callq 0xfd42e008 16: 44 89 e0 mov %r12d,%eax 19: 31 d2 xor %edx,%edx 1b: 48 89 ef mov %rbp,%rdi 1e: f7 f3 div %ebx 20: 49 89 c4 mov %rax,%r12 23: 48 89 c1 mov %rax,%rcx 26: 48 8b 04 24 mov (%rsp),%rax * 2a: f3 48 ab rep stos %rax,%es:(%rdi) <-- trapping instruction 2d: 31 ff xor %edi,%edi 2f: 4c 89 f6 mov %r14,%rsi 32: e8 b1 dc 42 fd callq 0xfd42dce8 37: 4d 85 f6 test %r14,%r14 3a: 0f 84 69 ff ff ff je 0xffffffa9