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: 24824 Comm: syz-executor.2 Not tainted 5.9.0-rc2-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 35 e2 b3 00 48 8b 44 24 28 48 c7 84 c4 48 01 00 00 00 00 00 00 8b 44 24 3c 00 77 00 00 70 77 77 00 70 77 07 00 77 77 77 07 <00> 00 00 00 00 00 00 00 70 77 77 00 70 77 70 07 70 77 77 00 00 00 RSP: 0018:ffffc900088cf2f0 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000 RDX: 1ffff11015ce6bc2 RSI: ffff8880978a2500 RDI: ffff888027ee2000 RBP: ffffc900088cf3c8 R08: 0000000000000001 R09: ffff888027ee28e0 R10: fffffbfff1564691 R11: 0000000000000000 R12: ffff888027ee2000 R13: ffff8880ae735e00 R14: ffff8880978a2500 R15: ffff888027ee2430 FS: 00007f39a8a67700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001590004 CR3: 000000008efa2000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x8e5/0x21e0 kernel/sched/core.c:4527 preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:4785 irqentry_exit_cond_resched kernel/entry/common.c:333 [inline] irqentry_exit_cond_resched kernel/entry/common.c:325 [inline] irqentry_exit+0x65/0x90 kernel/entry/common.c:363 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:__sanitizer_cov_trace_pc+0x52/0x60 kernel/kcov.c:205 Code: 74 2b 8b 82 00 14 00 00 83 f8 02 75 20 48 8b 8a 08 14 00 00 8b 92 04 14 00 00 48 8b 01 48 83 c0 01 48 39 c2 76 07 48 89 34 c1 <48> 89 01 c3 66 2e 0f 1f 84 00 00 00 00 00 41 55 41 54 49 89 fc 55 RSP: 0018:ffffc900088cf4b8 EFLAGS: 00000216 RAX: 000000000001850a RBX: 00000000ffffffff RCX: ffffc9000d245000 RDX: 0000000000040000 RSI: ffffffff814e5559 RDI: ffffffff8a1a1840 RBP: ffffffff8a1a1840 R08: 0000000000000000 R09: ffffffff8c5f39e7 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc900088cf670 R14: 0000000000000000 R15: 0000000000000000 notifier_call_chain+0x1a9/0x200 kernel/notifier.c:93 __atomic_notifier_call_chain+0x95/0x180 kernel/notifier.c:173 notify_write drivers/tty/vt/vt.c:264 [inline] vc_con_write_normal drivers/tty/vt/vt.c:2840 [inline] do_con_write+0xd1f/0x1d70 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:1540 __do_sys_sendfile64 fs/read_write.c:1601 [inline] __se_sys_sendfile64 fs/read_write.c:1587 [inline] __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1587 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: Bad RIP value. RSP: 002b:00007f39a8a66c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000027980 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 R10: 080000008000410a R11: 0000000000000246 R12: 000000000118cf4c R13: 000000000169fb6f R14: 00007f39a8a679c0 R15: 000000000118cf4c Modules linked in: ---[ end trace c2197d5deb621545 ]--- RIP: 0010:__switch_to_asm+0x0/0x40 arch/x86/entry/entry_64.S:229 Code: e8 35 e2 b3 00 48 8b 44 24 28 48 c7 84 c4 48 01 00 00 00 00 00 00 8b 44 24 3c 00 77 00 00 70 77 77 00 70 77 07 00 77 77 77 07 <00> 00 00 00 00 00 00 00 70 77 77 00 70 77 70 07 70 77 77 00 00 00 RSP: 0018:ffffc900088cf2f0 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000 RDX: 1ffff11015ce6bc2 RSI: ffff8880978a2500 RDI: ffff888027ee2000 RBP: ffffc900088cf3c8 R08: 0000000000000001 R09: ffff888027ee28e0 R10: fffffbfff1564691 R11: 0000000000000000 R12: ffff888027ee2000 R13: ffff8880ae735e00 R14: ffff8880978a2500 R15: ffff888027ee2430 FS: 00007f39a8a67700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001590004 CR3: 000000008efa2000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400