BUG: unable to handle page fault for address: ffff888001000000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD 11201067 P4D 11201067 PUD 11202067 PMD 80000000010001e1
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 27490 Comm: syz-executor.2 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:writeb arch/x86/include/asm/io.h:65 [inline]
RIP: 0010:vga16fb_fillrect+0x17b0/0x1c10 drivers/video/fbdev/vga16fb.c:923
Code: 00 00 31 ed 31 ff 89 de e8 6d c5 25 fd 4c 63 64 24 08 44 8d 7b ff ff 4c 24 04 85 db 74 33 44 89 fb 66 0f 1f 84 00 00 00 00 00 <41> 88 2e 85 db 74 0c 49 ff c6 e8 31 c1 25 fd ff cb eb ed e8 28 c1
RSP: 0018:ffffc9000ce9f7e8 EFLAGS: 00010212
RAX: ffffffff845e933f RBX: 000000000000008f RCX: 0000000000040000
RDX: ffffc9000d85b000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff845e9313 R09: ffffffff845e8418
R10: 0000000000000002 R11: ffff88807c9c3a00 R12: 0000000000000001
R13: 00000000000000c7 R14: ffff888001000000 R15: 00000000000000c6
FS: 00007ffa6f194700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000000 CR3: 000000005e076000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
bit_clear_margins+0x2d7/0x6e0 drivers/video/fbdev/core/bitblit.c:224
fbcon_clear_margins drivers/video/fbdev/core/fbcon.c:1315 [inline]
fbcon_switch+0x16bb/0x2340 drivers/video/fbdev/core/fbcon.c:2146
redraw_screen+0x53d/0x1280 drivers/tty/vt/vt.c:1021
do_fb_ioctl+0x7f2/0x900 drivers/video/fbdev/core/fbmem.c:1114
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ffa71c1eae9
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:00007ffa6f194188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffa71d31f60 RCX: 00007ffa71c1eae9
RDX: 00000000200002c0 RSI: 0000000000004601 RDI: 0000000000000005
RBP: 00007ffa71c78f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffff128eeaf R14: 00007ffa6f194300 R15: 0000000000022000
Modules linked in:
CR2: ffff888001000000
BUG: unable to handle page fault for address: ffff888001000000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD 11201067 P4D 11201067 PUD 11202067 PMD 80000000010001e1
Oops: 0003 [#2] PREEMPT SMP KASAN
CPU: 0 PID: 27490 Comm: syz-executor.2 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:writeb arch/x86/include/asm/io.h:65 [inline]
RIP: 0010:vga16fb_fillrect+0x17b0/0x1c10 drivers/video/fbdev/vga16fb.c:923
Code: 00 00 31 ed 31 ff 89 de e8 6d c5 25 fd 4c 63 64 24 08 44 8d 7b ff ff 4c 24 04 85 db 74 33 44 89 fb 66 0f 1f 84 00 00 00 00 00 <41> 88 2e 85 db 74 0c 49 ff c6 e8 31 c1 25 fd ff cb eb ed e8 28 c1
RSP: 0018:ffffc9000ce9eda8 EFLAGS: 00010012
RAX: ffffffff845e933f RBX: 000000000000008f RCX: 0000000000040000
RDX: ffffc9000d85b000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff845e9313 R09: ffffffff845e8418
R10: 0000000000000002 R11: ffff88807c9c3a00 R12: 0000000000000001
R13: 00000000000000c7 R14: ffff888001000000 R15: 00000000000000c6
FS: 00007ffa6f194700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000000 CR3: 000000005e076000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
bit_clear_margins+0x2d7/0x6e0 drivers/video/fbdev/core/bitblit.c:224
fbcon_clear_margins drivers/video/fbdev/core/fbcon.c:1315 [inline]
fbcon_switch+0x16bb/0x2340 drivers/video/fbdev/core/fbcon.c:2146
redraw_screen+0x53d/0x1280 drivers/tty/vt/vt.c:1021
fbcon_blank+0x556/0xa50 drivers/video/fbdev/core/fbcon.c:2207
do_unblank_screen+0x27c/0xb20 drivers/tty/vt/vt.c:4438
bust_spinlocks+0x43/0xd0 lib/bust_spinlocks.c:26
oops_end+0x45/0x140 arch/x86/kernel/dumpstack.c:361
page_fault_oops+0x838/0xaa0 arch/x86/mm/fault.c:708
__bad_area_nosemaphore+0x127/0x590 arch/x86/mm/fault.c:806
do_kern_addr_fault arch/x86/mm/fault.c:1207 [inline]
handle_page_fault arch/x86/mm/fault.c:1483 [inline]
exc_page_fault+0x15b/0x1e0 arch/x86/mm/fault.c:1541
asm_exc_page_fault+0x1e/0x30
RIP: 0010:writeb arch/x86/include/asm/io.h:65 [inline]
RIP: 0010:vga16fb_fillrect+0x17b0/0x1c10 drivers/video/fbdev/vga16fb.c:923
Code: 00 00 31 ed 31 ff 89 de e8 6d c5 25 fd 4c 63 64 24 08 44 8d 7b ff ff 4c 24 04 85 db 74 33 44 89 fb 66 0f 1f 84 00 00 00 00 00 <41> 88 2e 85 db 74 0c 49 ff c6 e8 31 c1 25 fd ff cb eb ed e8 28 c1
RSP: 0018:ffffc9000ce9f7e8 EFLAGS: 00010212
RAX: ffffffff845e933f RBX: 000000000000008f RCX: 0000000000040000
RDX: ffffc9000d85b000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff845e9313 R09: ffffffff845e8418
R10: 0000000000000002 R11: ffff88807c9c3a00 R12: 0000000000000001
R13: 00000000000000c7 R14: ffff888001000000 R15: 00000000000000c6
bit_clear_margins+0x2d7/0x6e0 drivers/video/fbdev/core/bitblit.c:224
fbcon_clear_margins drivers/video/fbdev/core/fbcon.c:1315 [inline]
fbcon_switch+0x16bb/0x2340 drivers/video/fbdev/core/fbcon.c:2146
redraw_screen+0x53d/0x1280 drivers/tty/vt/vt.c:1021
do_fb_ioctl+0x7f2/0x900 drivers/video/fbdev/core/fbmem.c:1114
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ffa71c1eae9
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:00007ffa6f194188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffa71d31f60 RCX: 00007ffa71c1eae9
RDX: 00000000200002c0 RSI: 0000000000004601 RDI: 0000000000000005
RBP: 00007ffa71c78f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffff128eeaf R14: 00007ffa6f194300 R15: 0000000000022000
Modules linked in:
CR2: ffff888001000000
---[ end trace d2a8821546b9ce03 ]---
RIP: 0010:writeb arch/x86/include/asm/io.h:65 [inline]
RIP: 0010:vga16fb_fillrect+0x17b0/0x1c10 drivers/video/fbdev/vga16fb.c:923
Code: 00 00 31 ed 31 ff 89 de e8 6d c5 25 fd 4c 63 64 24 08 44 8d 7b ff ff 4c 24 04 85 db 74 33 44 89 fb 66 0f 1f 84 00 00 00 00 00 <41> 88 2e 85 db 74 0c 49 ff c6 e8 31 c1 25 fd ff cb eb ed e8 28 c1
RSP: 0018:ffffc9000ce9f7e8 EFLAGS: 00010212
RAX: ffffffff845e933f RBX: 000000000000008f RCX: 0000000000040000
RDX: ffffc9000d85b000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff845e9313 R09: ffffffff845e8418
R10: 0000000000000002 R11: ffff88807c9c3a00 R12: 0000000000000001
R13: 00000000000000c7 R14: ffff888001000000 R15: 00000000000000c6
FS: 00007ffa6f194700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000000 CR3: 000000005e076000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 31 ed xor %ebp,%ebp
4: 31 ff xor %edi,%edi
6: 89 de mov %ebx,%esi
8: e8 6d c5 25 fd callq 0xfd25c57a
d: 4c 63 64 24 08 movslq 0x8(%rsp),%r12
12: 44 8d 7b ff lea -0x1(%rbx),%r15d
16: ff 4c 24 04 decl 0x4(%rsp)
1a: 85 db test %ebx,%ebx
1c: 74 33 je 0x51
1e: 44 89 fb mov %r15d,%ebx
21: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1)
28: 00 00
* 2a: 41 88 2e mov %bpl,(%r14) <-- trapping instruction
2d: 85 db test %ebx,%ebx
2f: 74 0c je 0x3d
31: 49 ff c6 inc %r14
34: e8 31 c1 25 fd callq 0xfd25c16a
39: ff cb dec %ebx
3b: eb ed jmp 0x2a
3d: e8 .byte 0xe8
3e: 28 c1 sub %al,%cl