general protection fault, probably for non-canonical address 0x1ffff11015d06b1a: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 30070 Comm: syz-executor.0 Not tainted 5.9.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__switch_to_asm+0x0/0x40 arch/x86/entry/entry_64.S:229 Code: 74 00 00 00 00 00 00 00 77 00 00 00 00 00 77 00 70 07 77 00 70 07 00 70 07 00 70 77 70 07 00 70 07 00 00 70 07 00 70 07 00 00 <00> 00 00 00 41 55 41 56 41 57 48 89 a7 d8 14 00 00 48 8b a6 d8 14 RSP: 0018:ffffc900066b7060 EFLAGS: 00010046 RAX: 1ffff11015d06b1a RBX: ffff88805eff2428 RCX: dffffc0000000000 RDX: ffff88805eff28e0 RSI: ffff88808e072540 RDI: ffff88805eff2000 RBP: ffff888095706280 R08: dffffc0000000000 R09: fffffbfff131e2d6 R10: fffffbfff131e2d6 R11: 0000000000000000 R12: ffff88805eff2430 R13: dffffc0000000000 R14: 1ffff11015d06c62 R15: ffff88808e072540 FS: 00007fd979c3a700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000400200 CR3: 00000000a19f0000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x9b9/0xd20 kernel/sched/core.c:4527 preempt_schedule_irq+0xda/0x190 kernel/sched/core.c:4785 irqentry_exit_cond_resched kernel/entry/common.c:356 [inline] irqentry_exit+0x92/0xa0 kernel/entry/common.c:386 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x60 kernel/kcov.c:197 Code: fb e8 17 00 00 00 48 8b 3d f8 0a 1a 08 48 89 de 5b e9 77 5a 3f 00 cc cc cc cc cc cc cc 48 8b 04 24 65 48 8b 0c 25 00 fe 01 00 <65> 8b 15 28 f0 8c 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 RSP: 0018:ffffc900066b71f0 EFLAGS: 00000202 RAX: ffffffff83d5267a RBX: 0000000000000002 RCX: ffff88805eff2000 RDX: ffff88805eff2000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: 0000000000000018 R08: ffffffff83d52653 R09: ffffffff83d51d5c R10: 0000000000000002 R11: ffff88805eff2000 R12: dffffc0000000000 R13: ffff888218a54053 R14: 0000000000707770 R15: 0000000000000002 slow_imageblit drivers/video/fbdev/core/cfbimgblt.c:171 [inline] cfb_imageblit+0xb8a/0x11e0 drivers/video/fbdev/core/cfbimgblt.c:302 bit_putcs+0x17ac/0x1bf0 drivers/video/fbdev/core/bitblit.c:105 fbcon_putcs+0x790/0xaf0 drivers/video/fbdev/core/fbcon.c:1308 con_flush drivers/tty/vt/vt.c:2575 [inline] vc_con_write_normal drivers/tty/vt/vt.c:2803 [inline] do_con_write+0x115b/0xd580 drivers/tty/vt/vt.c:2910 con_write+0x20/0x40 drivers/tty/vt/vt.c:3250 process_output_block drivers/tty/n_tty.c:595 [inline] n_tty_write+0xcbf/0x1170 drivers/tty/n_tty.c:2333 do_tty_write drivers/tty/tty_io.c:962 [inline] tty_write+0x593/0x940 drivers/tty/tty_io.c:1046 __kernel_write+0x1ac/0xac0 fs/read_write.c:528 write_pipe_buf+0xf9/0x150 fs/splice.c:799 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x351/0x8b0 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+0x1eb/0x2a0 fs/splice.c:1016 splice_direct_to_actor+0x4a2/0xb60 fs/splice.c:971 do_splice_direct+0x201/0x340 fs/splice.c:1059 do_sendfile+0x86d/0x1210 fs/read_write.c:1540 __do_sys_sendfile64 fs/read_write.c:1601 [inline] __se_sys_sendfile64 fs/read_write.c:1587 [inline] __x64_sys_sendfile64+0x164/0x1a0 fs/read_write.c:1587 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5f9 Code: 5d 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fd979c39c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000027a00 RCX: 000000000045d5f9 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 R10: 0800000080004103 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffee24c4b5f R14: 00007fd979c3a9c0 R15: 000000000118cf4c Modules linked in: ---[ end trace 2df40957ef6d8d42 ]--- RIP: 0010:__switch_to_asm+0x0/0x40 arch/x86/entry/entry_64.S:229 Code: 74 00 00 00 00 00 00 00 77 00 00 00 00 00 77 00 70 07 77 00 70 07 00 70 07 00 70 77 70 07 00 70 07 00 00 70 07 00 70 07 00 00 <00> 00 00 00 41 55 41 56 41 57 48 89 a7 d8 14 00 00 48 8b a6 d8 14 RSP: 0018:ffffc900066b7060 EFLAGS: 00010046 RAX: 1ffff11015d06b1a RBX: ffff88805eff2428 RCX: dffffc0000000000 RDX: ffff88805eff28e0 RSI: ffff88808e072540 RDI: ffff88805eff2000 RBP: ffff888095706280 R08: dffffc0000000000 R09: fffffbfff131e2d6 R10: fffffbfff131e2d6 R11: 0000000000000000 R12: ffff88805eff2430 R13: dffffc0000000000 R14: 1ffff11015d06c62 R15: ffff88808e072540 FS: 00007fd979c3a700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000400200 CR3: 00000000a19f0000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400