BUG: unable to handle page fault for address: ffff888001000040 #PF: supervisor write access in kernel mode #PF: error_code(0x0003) - permissions violation PGD 10601067 P4D 10601067 PUD 10602067 PMD 80000000010001e1 Oops: 0003 [#1] PREEMPT SMP KASAN CPU: 1 PID: 20331 Comm: syz-executor.5 Not tainted 5.14.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__writeq arch/x86/include/asm/io.h:98 [inline] RIP: 0010:bitfill_aligned drivers/video/fbdev/core/cfbfillrect.c:64 [inline] RIP: 0010:bitfill_aligned+0x141/0x240 drivers/video/fbdev/core/cfbfillrect.c:35 Code: 63 6c fd 44 89 e0 31 d2 bf 07 00 00 00 f7 f5 41 89 c4 89 c6 41 89 c5 e8 1d 6b 6c fd 41 83 fc 07 76 5f 4c 89 f5 e8 cf 63 6c fd <48> 89 5d 00 48 89 5d 08 48 89 5d 10 48 89 5d 18 48 89 5d 20 48 89 RSP: 0018:ffffc9000d0df788 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9001438a000 RDX: 0000000000040000 RSI: ffffffff84093791 RDI: 0000000000000003 RBP: ffff888001000040 R08: 0000000000000007 R09: 0000000000000040 R10: ffffffff84093783 R11: 0000000000000000 R12: 0000000000000028 R13: 0000000000000028 R14: ffff888001000040 R15: 0000000000000000 FS: 00007f2516f05700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000040 CR3: 00000000201af000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: cfb_fillrect+0x434/0x800 drivers/video/fbdev/core/cfbfillrect.c:327 vga16fb_fillrect+0x657/0x18d0 drivers/video/fbdev/vga16fb.c:951 bit_clear_margins+0x3f6/0x4b0 drivers/video/fbdev/core/bitblit.c:224 fbcon_clear_margins+0x1f1/0x280 drivers/video/fbdev/core/fbcon.c:1315 fbcon_switch+0xa8c/0x1620 drivers/video/fbdev/core/fbcon.c:2146 redraw_screen+0x2b9/0x740 drivers/tty/vt/vt.c:1021 fbcon_modechanged+0x593/0x6d0 drivers/video/fbdev/core/fbcon.c:2651 fbcon_update_vcs+0x3a/0x50 drivers/video/fbdev/core/fbcon.c:2696 do_fb_ioctl+0x62e/0x690 drivers/video/fbdev/core/fbmem.c:1108 fb_ioctl+0xe7/0x150 drivers/video/fbdev/core/fbmem.c:1183 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055 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+0x44/0xae RIP: 0033:0x4665e9 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2516f05188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000020000200 RSI: 0000000000004601 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 0000000000a9fb1f R14: 00007f2516f05300 R15: 0000000000022000 Modules linked in: CR2: ffff888001000040 BUG: unable to handle page fault for address: ffff888001000040 #PF: supervisor write access in kernel mode #PF: error_code(0x0003) - permissions violation PGD 10601067 P4D 10601067 PUD 10602067 PMD 80000000010001e1 Oops: 0003 [#2] PREEMPT SMP KASAN CPU: 1 PID: 20331 Comm: syz-executor.5 Not tainted 5.14.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__writeq arch/x86/include/asm/io.h:98 [inline] RIP: 0010:bitfill_aligned drivers/video/fbdev/core/cfbfillrect.c:64 [inline] RIP: 0010:bitfill_aligned+0x141/0x240 drivers/video/fbdev/core/cfbfillrect.c:35 Code: 63 6c fd 44 89 e0 31 d2 bf 07 00 00 00 f7 f5 41 89 c4 89 c6 41 89 c5 e8 1d 6b 6c fd 41 83 fc 07 76 5f 4c 89 f5 e8 cf 63 6c fd <48> 89 5d 00 48 89 5d 08 48 89 5d 10 48 89 5d 18 48 89 5d 20 48 89 RSP: 0018:ffffc9000d0dee90 EFLAGS: 00010046 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9001438a000 RDX: 0000000000040000 RSI: ffffffff84093791 RDI: 0000000000000003 RBP: ffff888001000040 R08: 0000000000000007 R09: 0000000000000040 R10: ffffffff84093783 R11: 0000000000000000 R12: 0000000000000028 R13: 0000000000000028 R14: ffff888001000040 R15: 0000000000000000 FS: 00007f2516f05700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000040 CR3: 00000000201af000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: cfb_fillrect+0x434/0x800 drivers/video/fbdev/core/cfbfillrect.c:327 vga16fb_fillrect+0x657/0x18d0 drivers/video/fbdev/vga16fb.c:951 bit_clear_margins+0x3f6/0x4b0 drivers/video/fbdev/core/bitblit.c:224 fbcon_clear_margins+0x1f1/0x280 drivers/video/fbdev/core/fbcon.c:1315 fbcon_switch+0xa8c/0x1620 drivers/video/fbdev/core/fbcon.c:2146 redraw_screen+0x2b9/0x740 drivers/tty/vt/vt.c:1021 fbcon_blank+0x8c5/0xc30 drivers/video/fbdev/core/fbcon.c:2207 do_unblank_screen+0x25b/0x470 drivers/tty/vt/vt.c:4398 bust_spinlocks+0x5b/0xe0 lib/bust_spinlocks.c:26 oops_end+0x2b/0xf0 arch/x86/kernel/dumpstack.c:361 page_fault_oops+0x33e/0x6b0 arch/x86/mm/fault.c:708 kernelmode_fixup_or_oops+0x219/0x280 arch/x86/mm/fault.c:755 __bad_area_nosemaphore+0x36d/0x400 arch/x86/mm/fault.c:801 do_kern_addr_fault+0x5b/0x70 arch/x86/mm/fault.c:1200 handle_page_fault arch/x86/mm/fault.c:1473 [inline] exc_page_fault+0x155/0x180 arch/x86/mm/fault.c:1531 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568 RIP: 0010:__writeq arch/x86/include/asm/io.h:98 [inline] RIP: 0010:bitfill_aligned drivers/video/fbdev/core/cfbfillrect.c:64 [inline] RIP: 0010:bitfill_aligned+0x141/0x240 drivers/video/fbdev/core/cfbfillrect.c:35 Code: 63 6c fd 44 89 e0 31 d2 bf 07 00 00 00 f7 f5 41 89 c4 89 c6 41 89 c5 e8 1d 6b 6c fd 41 83 fc 07 76 5f 4c 89 f5 e8 cf 63 6c fd <48> 89 5d 00 48 89 5d 08 48 89 5d 10 48 89 5d 18 48 89 5d 20 48 89 RSP: 0018:ffffc9000d0df788 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9001438a000 RDX: 0000000000040000 RSI: ffffffff84093791 RDI: 0000000000000003 RBP: ffff888001000040 R08: 0000000000000007 R09: 0000000000000040 R10: ffffffff84093783 R11: 0000000000000000 R12: 0000000000000028 R13: 0000000000000028 R14: ffff888001000040 R15: 0000000000000000 cfb_fillrect+0x434/0x800 drivers/video/fbdev/core/cfbfillrect.c:327 vga16fb_fillrect+0x657/0x18d0 drivers/video/fbdev/vga16fb.c:951 bit_clear_margins+0x3f6/0x4b0 drivers/video/fbdev/core/bitblit.c:224 fbcon_clear_margins+0x1f1/0x280 drivers/video/fbdev/core/fbcon.c:1315 fbcon_switch+0xa8c/0x1620 drivers/video/fbdev/core/fbcon.c:2146 redraw_screen+0x2b9/0x740 drivers/tty/vt/vt.c:1021 fbcon_modechanged+0x593/0x6d0 drivers/video/fbdev/core/fbcon.c:2651 fbcon_update_vcs+0x3a/0x50 drivers/video/fbdev/core/fbcon.c:2696 do_fb_ioctl+0x62e/0x690 drivers/video/fbdev/core/fbmem.c:1108 fb_ioctl+0xe7/0x150 drivers/video/fbdev/core/fbmem.c:1183 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055 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+0x44/0xae RIP: 0033:0x4665e9 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2516f05188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000020000200 RSI: 0000000000004601 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 0000000000a9fb1f R14: 00007f2516f05300 R15: 0000000000022000 Modules linked in: CR2: ffff888001000040 ---[ end trace 8add0e5e4c57d0bc ]--- RIP: 0010:__writeq arch/x86/include/asm/io.h:98 [inline] RIP: 0010:bitfill_aligned drivers/video/fbdev/core/cfbfillrect.c:64 [inline] RIP: 0010:bitfill_aligned+0x141/0x240 drivers/video/fbdev/core/cfbfillrect.c:35 Code: 63 6c fd 44 89 e0 31 d2 bf 07 00 00 00 f7 f5 41 89 c4 89 c6 41 89 c5 e8 1d 6b 6c fd 41 83 fc 07 76 5f 4c 89 f5 e8 cf 63 6c fd <48> 89 5d 00 48 89 5d 08 48 89 5d 10 48 89 5d 18 48 89 5d 20 48 89 RSP: 0018:ffffc9000d0df788 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9001438a000 RDX: 0000000000040000 RSI: ffffffff84093791 RDI: 0000000000000003 RBP: ffff888001000040 R08: 0000000000000007 R09: 0000000000000040 R10: ffffffff84093783 R11: 0000000000000000 R12: 0000000000000028 R13: 0000000000000028 R14: ffff888001000040 R15: 0000000000000000 FS: 00007f2516f05700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000040 CR3: 00000000201af000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400