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: 6831 Comm: syz-executor909 Not tainted 5.8.0-rc4-next-20200708-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: e8 25 00 00 00 00 8b 44 24 28 00 00 00 00 48 01 00 00 00 00 00 00 8b 44 24 3c 00 00 00 00 e9 2f fd ff 00 00 00 00 cc cc cc cc <00> 00 00 00 41 55 41 56 00 00 00 00 a7 d8 14 00 00 00 00 00 d8 14 RSP: 0018:ffffc90001667bb0 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000 RDX: 1ffff11015ce6bc2 RSI: ffff8880a95f6340 RDI: ffff8880a90e4100 RBP: ffffc90001667c80 R08: 0000000000000001 R09: ffff8880a90e49d0 R10: fffffbfff155e5f1 R11: 0000000000000000 R12: ffff8880ae735e00 R13: ffff8880a90e4100 R14: ffff8880a95f6340 R15: ffff8880a90e4530 FS: 0000000000a8a940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004d2c90 CR3: 000000009f298000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: context_switch kernel/sched/core.c:3445 [inline] __schedule+0x8b4/0x1e80 kernel/sched/core.c:4169 schedule+0xd0/0x2a0 kernel/sched/core.c:4244 freezable_schedule include/linux/freezer.h:172 [inline] do_nanosleep+0x222/0x650 kernel/time/hrtimer.c:1879 hrtimer_nanosleep+0x1f6/0x430 kernel/time/hrtimer.c:1932 __do_sys_nanosleep kernel/time/hrtimer.c:1966 [inline] __se_sys_nanosleep kernel/time/hrtimer.c:1953 [inline] __x64_sys_nanosleep+0x1dc/0x260 kernel/time/hrtimer.c:1953 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: unable to handle page fault for address: 0000000040000000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 9a7fb067 P4D 9a7fb067 PUD 0 Oops: 0002 [#2] PREEMPT SMP KASAN CPU: 1 PID: 6831 Comm: syz-executor909 Not tainted 5.8.0-rc4-next-20200708-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: e8 25 00 00 00 00 39 eb 76 ce 00 00 00 00 00 44 89 e0 00 00 00 00 c3 e8 8e 00 00 00 00 00 ff ff ff 66 00 00 00 00 00 00 00 00 <00> 00 00 00 48 89 fb e8 00 00 00 00 8b 2d 66 5e 00 00 00 00 00 00 RSP: 0018:ffffc90001667238 EFLAGS: 00010012 RAX: 0000000040000000 RBX: ffffc900016672d8 RCX: ffffffff816aa240 RDX: ffff8880a90e4100 RSI: ffffffff816aa26b RDI: 0000000000449cb0 RBP: 0000000000449cb0 R08: ffffc900016673e8 R09: ffffffff8c8e9109 R10: 0000000000449cb0 R11: 0000000000000000 R12: ffffc900016673e8 R13: 0000000000000001 R14: 0000000000449cb0 R15: ffffc900016672f8 FS: 0000000000a8a940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000040000000 CR3: 000000009f298000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: is_kernel include/linux/kallsyms.h:44 [inline] is_ksym_addr include/linux/kallsyms.h:50 [inline] kallsyms_lookup+0xc3/0x2e0 kernel/kallsyms.c:291 __sprint_symbol+0x9c/0x1c0 kernel/kallsyms.c:364 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:592 [inline] exc_general_protection+0x193/0x2d0 arch/x86/kernel/traps.c:522 asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:538 RIP: 0010:__switch_to_asm+0x0/0x40 arch/x86/entry/entry_64.S:229 Code: e8 25 00 00 00 00 8b 44 24 28 00 00 00 00 48 01 00 00 00 00 00 00 8b 44 24 3c 00 00 00 00 e9 2f fd ff 00 00 00 00 cc cc cc cc <00> 00 00 00 41 55 41 56 00 00 00 00 a7 d8 14 00 00 00 00 00 d8 14 RSP: 0018:ffffc90001667bb0 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000 RDX: 1ffff11015ce6bc2 RSI: ffff8880a95f6340 RDI: ffff8880a90e4100 RBP: ffffc90001667c80 R08: 0000000000000001 R09: ffff8880a90e49d0 R10: fffffbfff155e5f1 R11: 0000000000000000 R12: ffff8880ae735e00 R13: ffff8880a90e4100 R14: ffff8880a95f6340 R15: ffff8880a90e4530 context_switch kernel/sched/core.c:3445 [inline] __schedule+0x8b4/0x1e80 kernel/sched/core.c:4169 schedule+0xd0/0x2a0 kernel/sched/core.c:4244 freezable_schedule include/linux/freezer.h:172 [inline] do_nanosleep+0x222/0x650 kernel/time/hrtimer.c:1879 hrtimer_nanosleep+0x1f6/0x430 kernel/time/hrtimer.c:1932 __do_sys_nanosleep kernel/time/hrtimer.c:1966 [inline] __se_sys_nanosleep kernel/time/hrtimer.c:1953 [inline] __x64_sys_nanosleep+0x1dc/0x260 kernel/time/hrtimer.c:1953 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: unable to handle page fault for address: 0000000040000000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 9a7fb067 P4D 9a7fb067 PUD 0 Oops: 0002 [#3] PREEMPT SMP KASAN CPU: 1 PID: 6831 Comm: syz-executor909 Not tainted 5.8.0-rc4-next-20200708-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: e8 25 00 00 00 00 39 eb 76 ce 00 00 00 00 00 44 89 e0 00 00 00 00 c3 e8 8e 00 00 00 00 00 ff ff ff 66 00 00 00 00 00 00 00 00 <00> 00 00 00 48 89 fb e8 00 00 00 00 8b 2d 66 5e 00 00 00 00 00 00 RSP: 0018:ffffc90001666720 EFLAGS: 00010012 RAX: 0000000040000000 RBX: ffffc900016667c0 RCX: ffffffff816aa240 RDX: ffff8880a90e4100 RSI: ffffffff816aa26b RDI: 0000000000449cb0 RBP: 0000000000449cb0 R08: ffffc900016668d0 R09: ffff8880ae723eb3 R10: 0000000000449cb0 R11: 0000000000000001 R12: ffffc900016668d0 R13: 0000000000000001 R14: 0000000000449cb0 R15: ffffc900016667e0 FS: 0000000000a8a940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000040000000 CR3: 000000009f298000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kallsyms_