BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 464fa067 P4D 464fa067 PUD 94e6f067 PMD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 0 PID: 410 Comm: syz-executor.3 Not tainted 5.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:prepare_exit_to_usermode arch/x86/entry/common.c:189 [inline] RIP: 0010:syscall_return_slowpath arch/x86/entry/common.c:278 [inline] RIP: 0010:do_syscall_64+0x2c9/0x790 arch/x86/entry/common.c:304 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:ffffc900073cff20 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff888054c1e200 RCX: ffffffff8100a857 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc900073cff48 R08: ffff888054c1e200 R09: ffffed100a983c41 R10: ffffed100a983c40 R11: ffff888054c1e207 R12: ffffc900073cff58 R13: 0000000000000000 R14: 0000000000004000 R15: 0000000000000000 FS: 000000000285a940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000047f4e000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: entry_SYSCALL_64_after_hwframe+0x49/0xbe invalid opcode: 0000 [#2] PREEMPT SMP KASAN CPU: 0 PID: 410 Comm: syz-executor.3 Not tainted 5.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:in_gate_area_no_mm+0x3a/0x70 arch/x86/entry/vsyscall/vsyscall_64.c:344 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 <60> ff 48 89 de e8 7c b7 74 00 48 81 fb 00 00 60 ff 74 10 e8 ce b5 RSP: 0018:ffffc900073cf398 EFLAGS: 00010046 RAX: ffff888054c1e200 RBX: 0000000000000000 RCX: ffffffff816c3c90 RDX: 0000000000000000 RSI: ffffffff816c3cbb RDI: 000000000045a941 RBP: ffffc900073cf3d8 R08: ffff888054c1e200 R09: fffffbfff1708c62 R10: fffffbfff1708c61 R11: ffffffff8b846309 R12: 000000000045a941 R13: ffffc900073cf458 R14: ffffc900073cf538 R15: ffffc900073cf438 FS: 000000000285a940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000047f4e000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __sprint_symbol+0xb7/0x1e0 kernel/kallsyms.c:365 sprint_symbol+0x25/0x30 kernel/kallsyms.c:396 symbol_string+0x16f/0x230 lib/vsprintf.c:961 pointer+0x17b/0x740 lib/vsprintf.c:2188 vsnprintf+0x6b6/0x19a0 lib/vsprintf.c:2578 vscnprintf+0x2d/0x80 lib/vsprintf.c:2677 vprintk_store+0x44/0x4a0 kernel/printk/printk.c:1917 vprintk_emit+0x135/0x700 kernel/printk/printk.c:1978 vprintk_default+0x28/0x30 kernel/printk/printk.c:2023 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:386 printk+0xba/0xed kernel/printk/printk.c:2056 show_ip+0x27/0x38 arch/x86/kernel/dumpstack.c:124 show_iret_regs+0x14/0x38 arch/x86/kernel/dumpstack.c:131 __show_regs+0x1c/0x60 arch/x86/kernel/process_64.c:74 show_regs_if_on_stack.constprop.0+0x39/0x3c arch/x86/kernel/dumpstack.c:149 show_trace_log_lvl+0x25d/0x28c arch/x86/kernel/dumpstack.c:274 show_regs arch/x86/kernel/dumpstack.c:447 [inline] show_regs.cold+0x1a/0x1f arch/x86/kernel/dumpstack.c:437 __die_body+0x1b/0x60 arch/x86/kernel/dumpstack.c:392 __die+0x26/0x37 arch/x86/kernel/dumpstack.c:406 no_context+0x596/0xa30 arch/x86/mm/fault.c:821 __bad_area_nosemaphore+0xae/0x420 arch/x86/mm/fault.c:913 __bad_area arch/x86/mm/fault.c:934 [inline] bad_area+0x69/0x80 arch/x86/mm/fault.c:940 do_user_addr_fault arch/x86/mm/fault.c:1405 [inline] do_page_fault+0xc17/0x12e1 arch/x86/mm/fault.c:1517 page_fault+0x39/0x40 arch/x86/entry/entry_64.S:1203 RIP: 0010:prepare_exit_to_usermode arch/x86/entry/common.c:189 [inline] RIP: 0010:syscall_return_slowpath arch/x86/entry/common.c:278 [inline] RIP: 0010:do_syscall_64+0x2c9/0x790 arch/x86/entry/common.c:304 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:ffffc900073cff20 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff888054c1e200 RCX: ffffffff8100a857 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc900073cff48 R08: ffff888054c1e200 R09: ffffed100a983c41 R10: ffffed100a983c40 R11: ffff888054c1e207 R12: ffffc900073cff58 R13: 0000000000000000 R14: 0000000000004000 R15: 0000000000000000 entry_SYSCALL_64_after_hwframe+0x49/0xbe invalid opcode: 0000 [#3] PREEMPT SMP KASAN CPU: 0 PID: 410 Comm: syz-executor.3 Not tainted 5.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:in_gate_area_no_mm+0x3a/0x70 arch/x86/entry/vsyscall/vsyscall_64.c:344 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 <60> ff 48 89 de e8 7c b7 74 00 48 81 fb 00 00 60 ff 74 10 e8 ce b5 RSP: 0018:ffffc900073ce920 EFLAGS: 00010046 RAX: ffff888054c1e200 RBX: 0000000000000000 RCX: ffffffff816c3c90 RDX: 0000000000000000 RSI: ffffffff816c3cbb RDI: 000000000045a941 RBP: ffffc900073ce960 R08: ffff888054c1e200 R09: ffffed1015d04b78 R10: ffffed1015d04b77 R11: ffff8880ae825bb9 R12: 000000000045a941 R13: ffffc900073ce9e0 R14: ffffc900073ceac0 R15: ffffc900073ce9c0 FS: 000000000285a940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000047f4e000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __sprint_symbol+0xb7/0x1e0 kernel/kallsyms.c:365 sprint_symbol+0x25/0x30 kernel/kallsyms.c:396 symbol_string+0x16f/0x230 lib/vsprintf.c:961 pointer+0x17b/0x740 lib/vsprintf.c:2188 vsnprintf+0x6b6/0x19a0 lib/vsprintf.c:2578 vscnprintf+0x2d/0x80 lib/vsprintf.c:2677 printk_safe_log_store+0x106/0x270 kernel/printk/printk_safe.c:93 vprintk_safe kernel/printk/printk_safe.c:346 [inline] vprintk_func+0x131/0x189 kernel/printk/printk_safe.c:383 printk+0xba/0xed kernel/printk/printk.c:2056 show_ip+0x27/0x38 arch/x86/kernel/dumpstack.c:124 show_iret_regs+0x14/0x38 arch/x86/kernel/dumpstack.c:131 __show_regs+0x1c/0x60 arch/x86/kernel/process_64.c:74 show_regs_if_on_stack.constprop.0+0x39/0x3c arch/x86/kernel/dumpstack.c:149 show_trace_log_lvl+0x25d/0x28c arch/x86/kernel/dumpstack.c:274 show_regs arch/x86/kernel/dumpstack.c:447 [inline] show_regs.cold+0x1a/0x1f arch/x86/kernel/dumpstack.c:437 __die_body+0x1b/0x60 arch/x86/kernel/dumpstack.c:392 __die+0x26/0x37 arch/x86/kernel/dumpstack.c:406 die+0x2b/0x50 arch/x86/kernel/dumpstack.c:419 do_trap_no_signal arch/x86/kernel/traps.c:207 [inline] do_trap+0x101/0x230 arch/x86/kernel/traps.c:246 do_error_trap+0xd6/0x200 arch/x86/kernel/traps.c:273 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:in_gate_area_no_mm+0x3a/0x70 arch/x86/entry/vsyscall/vsyscall_64.c:344 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 <60> ff 48 89 de e8 7c b7 74 00 48 81 fb 00 00 60 ff 74 10 e8 ce b5 RSP: 0018:ffffc900073cf398 EFLAGS: 00010046 RAX: ffff888054c1e200 RBX: 0000000000000000 RCX: ffffffff816c3c90 RDX: 0000000000000000 RSI: ffffffff816c3cbb RDI: 000000000045a941 RBP: ffffc900073cf3d8 R08: ffff888054c1e200 R09: fffffbfff1708c62 R10: fffffbfff1708c61 R11: ffffffff8b846309 R12: 000000000045a941 R13: ffffc900073cf458 R14: ffffc900073cf538 R15: ffffc900073cf438 __sprint_symbol+0xb7/0x1e0 kernel/kallsyms.c:365 sprint_symbol+0x25/0x30 kernel/kallsyms.c:396 symbol_string+0x16f/0x230 lib/vsprintf.c:961 pointer+0x17b/0x740 lib/vsprintf.c:2188 vsnprintf+0x6b6/0x19a0 lib/vsprintf.c:2578 vscnprintf+0x2d/0x80 lib/vsprintf.c:2677 vprintk_store+0x44/0x4a0 kernel/printk/printk.c:1917 vprintk_emit+0x135/0x700 kernel/printk/printk.c:1978 vprintk_default+0x28/0x30 kernel/printk/printk.c:2023 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:386 printk+0xba/0xed kernel/printk/printk.c:2056 show_ip+0x27/0x38 arch/x86/kernel/dumpstack.c:124 show_iret_regs+0x14/0x38 arch/x86/kernel/dumpstack.c:131 __show_regs+0x1c/0x60 arch/x86/kernel/process_64.c:74 show_regs_if_on_stack.constprop.0+0x39/0x3c arch/x86/kernel/dumpstack.c:149 show_trace_log_lvl+0x25d/0x28c arch/x86/kernel/dumpstack.c:274 show_regs arch/x86/kernel/dumpstack.c:447 [inline] show_regs.cold+0x1a/0x1f arch/x86/kernel/dumpstack.c:437 __die_body+0x1b/0x60 arch/x86/kernel/dumpstack.c:392 __die+0x26/0x37 arch/x86/kernel/dumpstack.c:406 no_context+0x596/0xa30 arch/x86/mm/fault.c:821 __bad_area_nosemaphore+0xae/0x420 arch/x86/mm/fault.c:913 bad_a Lost 42 message(s)!