BUG: unable to handle page fault for address: ffff888001000028 #PF: supervisor write access in kernel mode #PF: error_code(0x0003) - permissions violation PGD e201067 P4D e201067 PUD e202067 PMD 80000000010001e1 Oops: 0003 [#1] PREEMPT SMP KASAN CPU: 1 PID: 17425 Comm: syz-executor.0 Not tainted 5.9.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline] RIP: 0010:slow_imageblit drivers/video/fbdev/core/cfbimgblt.c:178 [inline] RIP: 0010:cfb_imageblit+0x87a/0x1010 drivers/video/fbdev/core/cfbimgblt.c:302 Code: ff d3 e0 09 04 24 e8 55 44 8a fd 45 39 e7 0f 87 45 ff ff ff e8 67 48 8a fd 48 8b 44 24 10 8b 14 24 48 8d 70 04 48 89 74 24 10 <89> 10 44 89 e6 44 89 ff e8 29 44 8a fd 45 39 e7 0f 85 07 ff ff ff RSP: 0018:ffffc900087df030 EFLAGS: 00010246 RAX: ffff888001000028 RBX: 0000000000000000 RCX: ffffc90006059000 RDX: 0000000000000000 RSI: ffff88800100002c RDI: 0000000000000004 RBP: 0000000000000000 R08: ffff8882189f457f R09: ffff88821972235f R10: 000000000000001c R11: 0000000000000000 R12: 000000000000001c R13: 0000000000000000 R14: ffff8882189f457a R15: 000000000000001c FS: 00007ff4a271e700(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000028 CR3: 0000000047524000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1207 [inline] vga16fb_imageblit+0x693/0x2210 drivers/video/fbdev/vga16fb.c:1260 soft_cursor+0x514/0xa30 drivers/video/fbdev/core/softcursor.c:74 bit_cursor+0xcfe/0x1720 drivers/video/fbdev/core/bitblit.c:377 fbcon_cursor+0x50e/0x620 drivers/video/fbdev/core/fbcon.c:1348 fbcon_scroll+0x248/0x3580 drivers/video/fbdev/core/fbcon.c:1705 con_scroll+0x5b9/0x6d0 drivers/tty/vt/vt.c:629 lf+0x26b/0x2c0 drivers/tty/vt/vt.c:1490 vc_con_write_normal drivers/tty/vt/vt.c:2806 [inline] do_con_write+0xefe/0x1dd0 drivers/tty/vt/vt.c:2910 con_write+0x22/0xb0 drivers/tty/vt/vt.c:3250 process_output_block drivers/tty/n_tty.c:595 [inline] n_tty_write+0x3ce/0xf80 drivers/tty/n_tty.c:2333 do_tty_write drivers/tty/tty_io.c:962 [inline] tty_write+0x4d9/0x870 drivers/tty/tty_io.c:1046 __kernel_write+0x199/0x570 fs/read_write.c:528 write_pipe_buf+0x153/0x1f0 fs/splice.c:799 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x3dc/0x830 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] default_file_splice_write fs/splice.c:811 [inline] do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x228/0x2f0 fs/splice.c:1016 splice_direct_to_actor+0x38c/0x980 fs/splice.c:971 do_splice_direct+0x1b3/0x280 fs/splice.c:1059 do_sendfile+0x55f/0xd40 fs/read_write.c:1548 __do_sys_sendfile64 fs/read_write.c:1609 [inline] __se_sys_sendfile64 fs/read_write.c:1595 [inline] __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1595 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45dd99 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff4a271dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000027ec0 RCX: 000000000045dd99 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000118bf68 R08: 0000000000000000 R09: 0000000000000000 R10: 0800000080004103 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffd1f22e02f R14: 00007ff4a271e9c0 R15: 000000000118bf2c Modules linked in: CR2: ffff888001000028 BUG: unable to handle page fault for address: ffff888001000028 #PF: supervisor write access in kernel mode #PF: error_code(0x0003) - permissions violation PGD e201067 P4D e201067 PUD e202067 PMD 80000000010001e1 Oops: 0003 [#2] PREEMPT SMP KASAN CPU: 1 PID: 17425 Comm: syz-executor.0 Not tainted 5.9.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline] RIP: 0010:slow_imageblit drivers/video/fbdev/core/cfbimgblt.c:178 [inline] RIP: 0010:cfb_imageblit+0x87a/0x1010 drivers/video/fbdev/core/cfbimgblt.c:302 Code: ff d3 e0 09 04 24 e8 55 44 8a fd 45 39 e7 0f 87 45 ff ff ff e8 67 48 8a fd 48 8b 44 24 10 8b 14 24 48 8d 70 04 48 89 74 24 10 <89> 10 44 89 e6 44 89 ff e8 29 44 8a fd 45 39 e7 0f 85 07 ff ff ff RSP: 0018:ffffc900087de838 EFLAGS: 00010046 RAX: ffff888001000028 RBX: 0000000000000000 RCX: ffffc90006059000 RDX: 0000000000077000 RSI: ffff88800100002c RDI: 0000000000000004 RBP: 0000000000000000 R08: ffff8882189f458f R09: ffffffff8b5965c7 R10: 000000000000001c R11: 0000000000000001 R12: 000000000000001c R13: 0000000000000000 R14: ffff8882189f458a R15: 000000000000001c FS: 00007ff4a271e700(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000028 CR3: 0000000047524000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1207 [inline] vga16fb_imageblit+0x693/0x2210 drivers/video/fbdev/vga16fb.c:1260 soft_cursor+0x514/0xa30 drivers/video/fbdev/core/softcursor.c:74 bit_cursor+0xcfe/0x1720 drivers/video/fbdev/core/bitblit.c:377 fbcon_cursor+0x50e/0x620 drivers/video/fbdev/core/fbcon.c:1348 fbcon_blank+0x879/0xc30 drivers/video/fbdev/core/fbcon.c:2244 do_unblank_screen+0x25b/0x470 drivers/tty/vt/vt.c:4402 bust_spinlocks+0x5b/0xe0 lib/bust_spinlocks.c:26 oops_end+0x2b/0xf0 arch/x86/kernel/dumpstack.c:344 no_context+0x5a2/0x9f0 arch/x86/mm/fault.c:747 __bad_area_nosemaphore+0xa9/0x4f0 arch/x86/mm/fault.c:835 do_kern_addr_fault+0x5b/0x6f arch/x86/mm/fault.c:1207 handle_page_fault arch/x86/mm/fault.c:1427 [inline] exc_page_fault+0x168/0x190 arch/x86/mm/fault.c:1482 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538 RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline] RIP: 0010:slow_imageblit drivers/video/fbdev/core/cfbimgblt.c:178 [inline] RIP: 0010:cfb_imageblit+0x87a/0x1010 drivers/video/fbdev/core/cfbimgblt.c:302 Code: ff d3 e0 09 04 24 e8 55 44 8a fd 45 39 e7 0f 87 45 ff ff ff e8 67 48 8a fd 48 8b 44 24 10 8b 14 24 48 8d 70 04 48 89 74 24 10 <89> 10 44 89 e6 44 89 ff e8 29 44 8a fd 45 39 e7 0f 85 07 ff ff ff RSP: 0018:ffffc900087df030 EFLAGS: 00010246 RAX: ffff888001000028 RBX: 0000000000000000 RCX: ffffc90006059000 RDX: 0000000000000000 RSI: ffff88800100002c RDI: 0000000000000004 RBP: 0000000000000000 R08: ffff8882189f457f R09: ffff88821972235f R10: 000000000000001c R11: 0000000000000000 R12: 000000000000001c R13: 0000000000000000 R14: ffff8882189f457a R15: 000000000000001c vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1207 [inline] vga16fb_imageblit+0x693/0x2210 drivers/video/fbdev/vga16fb.c:1260 soft_cursor+0x514/0xa30 drivers/video/fbdev/core/softcursor.c:74 bit_cursor+0xcfe/0x1720 drivers/video/fbdev/core/bitblit.c:377 fbcon_cursor+0x50e/0x620 drivers/video/fbdev/core/fbcon.c:1348 fbcon_scroll+0x248/0x3580 drivers/video/fbdev/core/fbcon.c:1705 con_scroll+0x5b9/0x6d0 drivers/tty/vt/vt.c:629 lf+0x26b/0x2c0 drivers/tty/vt/vt.c:1490 vc_con_write_normal drivers/tty/vt/vt.c:2806 [inline] do_con_write+0xefe/0x1dd0 drivers/tty/vt/vt.c:2910 con_write+0x22/0xb0 drivers/tty/vt/vt.c:3250 process_output_block drivers/tty/n_tty.c:595 [inline] n_tty_write+0x3ce/0xf80 drivers/tty/n_tty.c:2333 do_tty_write drivers/tty/tty_io.c:962 [inline] tty_write+0x4d9/0x870 drivers/tty/tty_io.c:1046 __kernel_write+0x199/0x570 fs/read_write.c:528 write_pipe_buf+0x153/0x1f0 fs/splice.c:799 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x3dc/0x830 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] default_file_splice_write fs/splice.c:811 [inline] do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x228/0x2f0 fs/splice.c:1016 splice_direct_to_actor+0x38c/0x980 fs/splice.c:971 do_splice_direct+0x1b3/0x280 fs/splice.c:1059 do_sendfile+0x55f/0xd40 fs/read_write.c:1548 __do_sys_sendfile64 fs/read_write.c:1609 [inline] __se_sys_sendfile64 fs/read_write.c:1595 [inline] __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1595 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45dd99 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff4a271dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000027ec0 RCX: 000000000045dd99 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000118bf68 R08: 0000000000000000 R09: 0000000000000000 R10: 0800000080004103 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffd1f22e02f R14: 00007ff4a271e9c0 R15: 000000000118bf2c Modules linked in: CR2: ffff888001000028 ---[ end trace 6074806991ab1330 ]--- RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline] RIP: 0010:slow_imageblit drivers/video/fbdev/core/cfbimgblt.c:178 [inline] RIP: 0010:cfb_imageblit+0x87a/0x1010 drivers/video/fbdev/core/cfbimgblt.c:302 Code: ff d3 e0 09 04 24 e8 55 44 8a fd 45 39 e7 0f 87 45 ff ff ff e8 67 48 8a fd 48 8b 44 24 10 8b 14 24 48 8d 70 04 48 89 74 24 10 <89> 10 44 89 e6 44 89 ff e8 29 44 8a fd 45 39 e7 0f 85 07 ff ff ff RSP: 0018:ffffc900087df030 EFLAGS: 00010246 RAX: ffff888001000028 RBX: 0000000000000000 RCX: ffffc90006059000 RDX: 0000000000000000 RSI: ffff88800100002c RDI: 0000000000000004 RBP: 0000000000000000 R08: ffff8882189f457f R09: ffff88821972235f R10: 000000000000001c R11: 0000000000000000 R12: 000000000000001c R13: 0000000000000000 R14: ffff8882189f457a R15: 000000000000001c FS: 00007ff4a271e700(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000028 CR3: 0000000047524000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400