general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 28649 Comm: syz-executor.0 Not tainted 5.8.0-rc3-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:228 Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RSP: 0018:ffffc900086073d8 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000 RDX: 1ffff11015ce6bc2 RSI: ffff8880562c8200 RDI: ffff888091080480 RBP: ffffc900086074a8 R08: 0000000000000001 R09: ffff888091080d48 R10: fffffbfff155cb09 R11: 0000000000000000 R12: ffff8880ae735e00 R13: ffff888091080480 R14: ffff8880562c8200 R15: ffff8880910808b0 FS: 00007ff157fa2700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055fd7199c500 CR3: 0000000056273000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: context_switch kernel/sched/core.c:3453 [inline] __schedule+0x8e1/0x1eb0 kernel/sched/core.c:4178 preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:4436 idtentry_exit_cond_resched arch/x86/entry/common.c:621 [inline] idtentry_exit_cond_rcu+0xc0/0xf0 arch/x86/entry/common.c:668 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 RIP: 0010:__sanitizer_cov_trace_pc+0x35/0x60 kernel/kcov.c:200 Code: 05 90 47 8e 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 35 8b 82 04 14 00 00 85 c0 74 2b 8b 82 e0 13 00 00 83 f8 02 75 20 <48> 8b 8a e8 13 00 00 8b 92 e4 13 00 00 48 8b 01 48 83 c0 01 48 39 RSP: 0018:ffffc900086075a8 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 0000000000000050 RCX: ffffffff83c645e4 RDX: ffff888091080480 RSI: ffffffff83c645d0 RDI: 0000000000000004 RBP: 000000000000000c R08: 0000000000000001 R09: ffff8880a3f7811f R10: 0000000000000050 R11: 0000000000000000 R12: ffff88800101b8ec R13: ffff88800101b8e0 R14: 0000000000000000 R15: 00000000fffce749 writeb arch/x86/include/asm/io.h:65 [inline] vga16fb_fillrect+0x9c0/0x193b drivers/video/fbdev/vga16fb.c:923 bit_clear_margins+0x2d5/0x4a0 drivers/video/fbdev/core/bitblit.c:232 fbcon_clear_margins+0x1d5/0x230 drivers/video/fbdev/core/fbcon.c:1381 fbcon_switch+0xb6e/0x16c0 drivers/video/fbdev/core/fbcon.c:2363 redraw_screen+0x2ae/0x770 drivers/tty/vt/vt.c:1015 fbcon_modechanged+0x575/0x710 drivers/video/fbdev/core/fbcon.c:3001 fbcon_update_vcs+0x3a/0x50 drivers/video/fbdev/core/fbcon.c:3048 fb_set_var+0xae8/0xd60 drivers/video/fbdev/core/fbmem.c:1056 do_fb_ioctl+0x33f/0x6c0 drivers/video/fbdev/core/fbmem.c:1109 fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1185 vfs_ioctl fs/ioctl.c:48 [inline] ksys_ioctl+0x11a/0x180 fs/ioctl.c:753 __do_sys_ioctl fs/ioctl.c:762 [inline] __se_sys_ioctl fs/ioctl.c:760 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:760 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: unable to handle page fault for address: 0000000040000002 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 56274067 P4D 56274067 PUD 0 Oops: 0002 [#2] PREEMPT SMP KASAN CPU: 1 PID: 28649 Comm: syz-executor.0 Not tainted 5.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:in_gate_area_no_mm+0x0/0x6a arch/x86/entry/vsyscall/vsyscall_64.c:343 Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RSP: 0018:ffffc90008606a58 EFLAGS: 00010006 RAX: 0000000040000002 RBX: ffffc90008606af8 RCX: ffffffff816a5e30 RDX: ffff888091080480 RSI: ffffffff816a5e5b RDI: 000000000045cb29 RBP: 000000000045cb29 R08: ffffc90008606c08 R09: ffffffff8c8cc109 R10: 000000000045cb29 R11: 0000000000000000 R12: ffffc90008606c08 R13: 0000000000000001 R14: 000000000045cb29 R15: ffffc90008606b18 FS: 00007ff157fa2700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000040000002 CR3: 0000000056273000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: is_kernel include/linux/kallsyms.h:43 [inline] is_ksym_addr include/linux/kallsyms.h:49 [inline] kallsyms_lookup+0xc3/0x2e0 kernel/kallsyms.c:290 __sprint_symbol+0x9c/0x1c0 kernel/kallsyms.c:363 symbol_string+0x14c/0x370 lib/vsprintf.c:969 pointer+0x185/0x970 lib/vsprintf.c:2226 vsnprintf+0x5b2/0x14f0 lib/vsprintf.c:2624 vscnprintf+0x29/0x80 lib/vsprintf.c:2723 vprintk_store+0x44/0x4a0 kernel/printk/printk.c:1942 vprintk_emit+0x139/0x770 kernel/printk/printk.c:2003 vprintk_func+0x8f/0x1a6 kernel/printk/printk_safe.c:393 printk+0xba/0xed kernel/printk/printk.c:2070 show_ip+0x22/0x30 arch/x86/kernel/dumpstack.c:124 show_iret_regs+0x10/0x32 arch/x86/kernel/dumpstack.c:131 __show_regs+0x18/0x50 arch/x86/kernel/process_64.c:72 show_trace_log_lvl+0x255/0x2b4 arch/x86/kernel/dumpstack.c:274 show_regs arch/x86/kernel/dumpstack.c:408 [inline] __die_body arch/x86/kernel/dumpstack.c:393 [inline] die_addr.cold+0x8/0xd arch/x86/kernel/dumpstack.c:433 __exc_general_protection arch/x86/kernel/traps.c:593 [inline] exc_general_protection+0x193/0x2d0 arch/x86/kernel/traps.c:523 asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:559 RIP: 0010:__switch_to_asm+0x0/0x40 arch/x86/entry/entry_64.S:228 Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RSP: 0018:ffffc900086073d8 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000 RDX: 1ffff11015ce6bc2 RSI: ffff8880562c8200 RDI: ffff888091080480 RBP: ffffc900086074a8 R08: 0000000000000001 R09: ffff888091080d48 R10: fffffbfff155cb09 R11: 0000000000000000 R12: ffff8880ae735e00 R13: ffff888091080480 R14: ffff8880562c8200 R15: ffff8880910808b0 context_switch kernel/sched/core.c:3453 [inline] __schedule+0x8e1/0x1eb0 kernel/sched/core.c:4178 preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:4436 idtentry_exit_cond_resched arch/x86/entry/common.c:621 [inline] idtentry_exit_cond_rcu+0xc0/0xf0 arch/x86/entry/common.c:668 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 RIP: 0010:__sanitizer_cov_trace_pc+0x35/0x60 kernel/kcov.c:200 Code: 05 90 47 8e 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 35 8b 82 04 14 00 00 85 c0 74 2b 8b 82 e0 13 00 00 83 f8 02 75 20 <48> 8b 8a e8 13 00 00 8b 92 e4 13 00 00 48 8b 01 48 83 c0 01 48 39 RSP: 0018:ffffc900086075a8 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 0000000000000050 RCX: ffffffff83c645e4 RDX: ffff888091080480 RSI: ffffffff83c645d0 RDI: 0000000000000004 RBP: 000000000000000c R08: 0000000000000001 R09: ffff8880a3f7811f R10: 0000000000000050 R11: 0000000000000000 R12: ffff88800101b8ec R13: ffff88800101b8e0 R14: 0000000000000000 R15: 00000000fffce749 writeb arch/x86/include/asm/io.h:65 [inline] vga16fb_fillrect+0x9c0/0x193b drivers/video/fbdev/vga16fb.c:923 bit_clear_margins+0x2d5/0x4a0 drivers/video/fbdev/core/bitblit.c:232 fbcon_clear_margins+0x1d5/0x230 drivers/video/fbdev/core/fbcon.c:1381 fbcon_switch+0xb6e/0x16c0 drivers/video/fbdev/core/fbcon.c:2363 redraw_screen+0x2ae/0x770 drivers/tty/vt/vt.c:1015 fbcon_modechanged+0x575/0x710 drivers/video/fbdev/core/fbcon.c:3001 fbcon_update_vcs+0x3a/0x50 drivers/video/fbdev/core/fbcon.c:3048 fb_set_var+0xae8/0xd60 drivers/video/fbdev/core/fbmem.c:1056 do_fb_ioctl+0x33f/0x6c0 drivers/video/fbdev/core/fbmem.c:1109 fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1185 vfs_ioctl fs/ioctl.c:48 [inline] ksys_ioctl+0x11a/0x180 fs/ioctl.c:753 __do_sys_ioctl fs/ioctl.c:762 [inline] __se_sys_ioctl fs/ioctl.c:760 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:760 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: unable to handle page fault for address: 0000000040000002 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 56274067 P4D 56274067 PUD 0 Oops: 0002 [#3] PREEMPT SMP KASAN CPU: 1 PID: 28649 Comm: syz-executor.0 Not tainted 5.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:in_gate_area_no_mm+0x0/0x6a arch/x86/entry/vsyscall/vsyscall_64.c:343 Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RSP: 0018:ffffc90008605f40 EFLAGS: 00010006 RAX: 0000000040000002 RBX: ffffc90008605fe0 RCX: ffffffff816a5e30 RDX: ffff888091080480 RSI: ffffffff816a5e5b RDI: 000000000045cb29 RBP: 000000000045cb29 R08: ffffc900086060f0 R09: ffff8880ae7244c2 R10: 000000000045cb29 R11: 0000000000000001 R12: ffffc900086060f0 R13: 0000000000000001 R14: 000000000045cb29 R15: ffffc90008606000 FS: 00007ff157fa2700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000040000002 CR3: 0000000056273000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: is_kernel include/linux/kallsyms.h:43 [inline] is_ksym_addr include/linux/kallsyms.h:49 [inline] kallsyms_lookup+0xc3/0x2e0 kernel/kallsyms.c:290 __sprint_symbol+0x9c/0x1c0 kernel/kallsyms.c:363 symbol_string+0x14c/0x370 lib/vsprintf.c:969 pointer+0x185/0x970 lib/vsprintf.c:2226 vsnprintf+0x5b2/0x14f0 lib/vsprintf.c:2624 vscnprintf+0x29/0x80 lib/vsprintf.c:2723 printk_safe_log_store+0xf5/0x250 kernel/printk/printk_safe.c:94 vprintk_safe kernel/printk/printk_safe.c:347 [inline] vprintk_func+0xef/0x1a6 kernel/printk/printk_safe.c:390 printk+0xba/0xed kernel/printk/printk.c:2070 show_ip+0x22/0x30 arch/x86/kernel/dumpstack.c:124 show_iret_regs+0x10/0x32 arch/x86/kernel/dumpstack.c:131 __show_regs+0x18/0x50 arch/x86/kernel/process_64.c:72 show_trace_log_lvl+0x255/0x2b4 arch/x86/kernel/dumpstack.c:274 show_regs arch/x86/kernel/dumpstack.c:447 [inline] __die_body arch/x86/kernel/dumpstack.c:393 [inline] __die+0x51/0x90 arch/x86/kernel/dumpstack.c:407 no_context+0x56b/0x9f0 arch/x86/mm/fault.c:695 __bad_area_nosemaphore+0xa9/0x480 arch/x86/mm/fault.c:789 do_user_addr_fault+0x783/0xd00 arch/x86/mm/fault.c:1171 handle_page_fault arch/x86/mm/fault.c:1365 [inline] exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:565 RIP: 0010:in_gate_area_no_mm+0x0/0x6a arch/x86/entry/vsyscall/vsyscall_64.c:343 Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 Lost 147 message(s)!