BUG: unable to handle page fault for address: ffffc900047c1000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 12000067 P4D 12000067 PUD 121c9067 PMD 1e59c067 PTE 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 0 PID: 8252 Comm: syz-executor.0 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+0x1ad/0x270 drivers/video/fbdev/core/sysfillrect.c:53 Code: 08 49 31 ef eb 66 e8 52 38 03 fd 45 89 e6 4c 8b 64 24 10 44 89 f0 31 d2 f7 f3 89 c3 48 8b 6c 24 08 48 89 e8 4c 89 e7 48 89 d9 48 ab 31 ff 44 89 ee e8 46 3c 03 fd 4d 85 ed 74 5f 4d 8d 24 dc RSP: 0018:ffffc90004cd77e8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000ffc RCX: 00000000000001fc RDX: 0000000000000000 RSI: 0000000000001f9b RDI: ffffc900047c1000 RBP: 0000000000000000 R08: ffffffff848659ae R09: 0000000000000040 R10: 0000000000000002 R11: ffff888038065880 R12: ffffc900047ba000 R13: 0000000000000000 R14: 000000000003ff00 R15: ffffffffffffffff FS: 00007fab247bd700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc900047c1000 CR3: 0000000027cee000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sys_fillrect+0x5ce/0x7f0 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+0x163/0x300 drivers/gpu/drm/drm_fb_helper.c:2322 bit_clear_margins+0x3f1/0x6e0 drivers/video/fbdev/core/bitblit.c:232 fbcon_clear_margins drivers/video/fbdev/core/fbcon.c:1306 [inline] fbcon_do_set_font+0xd7c/0x1330 drivers/video/fbdev/core/fbcon.c:2431 fbcon_set_font+0xc29/0xf70 drivers/video/fbdev/core/fbcon.c:2519 con_font_set drivers/tty/vt/vt.c:4666 [inline] con_font_op+0xbe8/0x1070 drivers/tty/vt/vt.c:4710 vt_k_ioctl drivers/tty/vt/vt_ioctl.c:474 [inline] vt_ioctl+0x172e/0x1d00 drivers/tty/vt/vt_ioctl.c:752 tty_ioctl+0x874/0xc60 drivers/tty/tty_io.c:2778 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+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fab23689279 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:00007fab247bd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fab2379bf80 RCX: 00007fab23689279 RDX: 0000000020000000 RSI: 0000000000004b72 RDI: 0000000000000003 RBP: 00007fab247bd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc5ec62a5f R14: 00007fab247bd300 R15: 0000000000022000 Modules linked in: CR2: ffffc900047c1000 BUG: unable to handle page fault for address: ffffc900047c1000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 12000067 P4D 12000067 PUD 121c9067 PMD 1e59c067 PTE 0 Oops: 0002 [#2] PREEMPT SMP KASAN CPU: 0 PID: 8252 Comm: syz-executor.0 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+0x1ad/0x270 drivers/video/fbdev/core/sysfillrect.c:53 Code: 08 49 31 ef eb 66 e8 52 38 03 fd 45 89 e6 4c 8b 64 24 10 44 89 f0 31 d2 f7 f3 89 c3 48 8b 6c 24 08 48 89 e8 4c 89 e7 48 89 d9 48 ab 31 ff 44 89 ee e8 46 3c 03 fd 4d 85 ed 74 5f 4d 8d 24 dc RSP: 0018:ffffc90004cd6d48 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000ffc RCX: 00000000000001fc RDX: 0000000000000000 RSI: 000000000000dd3a RDI: ffffc900047c1000 RBP: 0000000000000000 R08: ffffffff848659ae R09: 0000000000000040 R10: 0000000000000002 R11: ffff888038065880 R12: ffffc900047ba000 R13: 0000000000000000 R14: 000000000003ff00 R15: ffffffffffffffff FS: 00007fab247bd700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc900047c1000 CR3: 0000000027cee000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sys_fillrect+0x5ce/0x7f0 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+0x163/0x300 drivers/gpu/drm/drm_fb_helper.c:2322 bit_clear_margins+0x3f1/0x6e0 drivers/video/fbdev/core/bitblit.c:232 fbcon_clear_margins drivers/video/fbdev/core/fbcon.c:1306 [inline] fbcon_switch+0x16d0/0x2450 drivers/video/fbdev/core/fbcon.c:2178 redraw_screen+0x541/0x1170 drivers/tty/vt/vt.c:1021 fbcon_blank+0x755/0xae0 drivers/video/fbdev/core/fbcon.c:2238 do_unblank_screen+0x2a0/0x7b0 drivers/tty/vt/vt.c:4438 bust_spinlocks+0x43/0xd0 lib/bust_spinlocks.c:26 oops_end+0x45/0x140 arch/x86/kernel/dumpstack.c:355 page_fault_oops+0x838/0xaa0 arch/x86/mm/fault.c:708 __bad_area_nosemaphore+0x127/0x580 arch/x86/mm/fault.c:806 handle_page_fault arch/x86/mm/fault.c:1486 [inline] exc_page_fault+0xcb/0x120 arch/x86/mm/fault.c:1544 asm_exc_page_fault+0x22/0x30 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+0x1ad/0x270 drivers/video/fbdev/core/sysfillrect.c:53 Code: 08 49 31 ef eb 66 e8 52 38 03 fd 45 89 e6 4c 8b 64 24 10 44 89 f0 31 d2 f7 f3 89 c3 48 8b 6c 24 08 48 89 e8 4c 89 e7 48 89 d9 48 ab 31 ff 44 89 ee e8 46 3c 03 fd 4d 85 ed 74 5f 4d 8d 24 dc RSP: 0018:ffffc90004cd77e8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000ffc RCX: 00000000000001fc RDX: 0000000000000000 RSI: 0000000000001f9b RDI: ffffc900047c1000 RBP: 0000000000000000 R08: ffffffff848659ae R09: 0000000000000040 R10: 0000000000000002 R11: ffff888038065880 R12: ffffc900047ba000 R13: 0000000000000000 R14: 000000000003ff00 R15: ffffffffffffffff sys_fillrect+0x5ce/0x7f0 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+0x163/0x300 drivers/gpu/drm/drm_fb_helper.c:2322 bit_clear_margins+0x3f1/0x6e0 drivers/video/fbdev/core/bitblit.c:232 fbcon_clear_margins drivers/video/fbdev/core/fbcon.c:1306 [inline] fbcon_do_set_font+0xd7c/0x1330 drivers/video/fbdev/core/fbcon.c:2431 fbcon_set_font+0xc29/0xf70 drivers/video/fbdev/core/fbcon.c:2519 con_font_set drivers/tty/vt/vt.c:4666 [inline] con_font_op+0xbe8/0x1070 drivers/tty/vt/vt.c:4710 vt_k_ioctl drivers/tty/vt/vt_ioctl.c:474 [inline] vt_ioctl+0x172e/0x1d00 drivers/tty/vt/vt_ioctl.c:752 tty_ioctl+0x874/0xc60 drivers/tty/tty_io.c:2778 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+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fab23689279 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:00007fab247bd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fab2379bf80 RCX: 00007fab23689279 RDX: 0000000020000000 RSI: 0000000000004b72 RDI: 0000000000000003 RBP: 00007fab247bd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc5ec62a5f R14: 00007fab247bd300 R15: 0000000000022000 Modules linked in: CR2: ffffc900047c1000 ---[ 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+0x1ad/0x270 drivers/video/fbdev/core/sysfillrect.c:53 Code: 08 49 31 ef eb 66 e8 52 38 03 fd 45 89 e6 4c 8b 64 24 10 44 89 f0 31 d2 f7 f3 89 c3 48 8b 6c 24 08 48 89 e8 4c 89 e7 48 89 d9 48 ab 31 ff 44 89 ee e8 46 3c 03 fd 4d 85 ed 74 5f 4d 8d 24 dc RSP: 0018:ffffc90004cd77e8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000ffc RCX: 00000000000001fc RDX: 0000000000000000 RSI: 0000000000001f9b RDI: ffffc900047c1000 RBP: 0000000000000000 R08: ffffffff848659ae R09: 0000000000000040 R10: 0000000000000002 R11: ffff888038065880 R12: ffffc900047ba000 R13: 0000000000000000 R14: 000000000003ff00 R15: ffffffffffffffff FS: 00007fab247bd700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc900047c1000 CR3: 0000000027cee000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 08 49 31 or %cl,0x31(%rcx) 3: ef out %eax,(%dx) 4: eb 66 jmp 0x6c 6: e8 52 38 03 fd callq 0xfd03385d b: 45 89 e6 mov %r12d,%r14d e: 4c 8b 64 24 10 mov 0x10(%rsp),%r12 13: 44 89 f0 mov %r14d,%eax 16: 31 d2 xor %edx,%edx 18: f7 f3 div %ebx 1a: 89 c3 mov %eax,%ebx 1c: 48 8b 6c 24 08 mov 0x8(%rsp),%rbp 21: 48 89 e8 mov %rbp,%rax 24: 4c 89 e7 mov %r12,%rdi 27: 48 89 d9 mov %rbx,%rcx * 2a: f3 48 ab rep stos %rax,%es:(%rdi) <-- trapping instruction 2d: 31 ff xor %edi,%edi 2f: 44 89 ee mov %r13d,%esi 32: e8 46 3c 03 fd callq 0xfd033c7d 37: 4d 85 ed test %r13,%r13 3a: 74 5f je 0x9b 3c: 4d 8d 24 dc lea (%r12,%rbx,8),%r12