BUG: unable to handle page fault for address: ffffffffffffff6c #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 9a90067 P4D 9a90067 PUD 9a92067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 6944 Comm: syz-executor.1 Not tainted 5.9.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:wait_consider_task+0xa9/0x3b20 kernel/exit.c:1269 Code: 00 00 00 31 c0 e8 c7 1c 2e 00 4c 89 f8 48 c1 e8 03 0f b6 14 28 4c 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 40 1d 00 00 <45> 8b a6 74 04 00 00 bf 10 00 00 00 44 89 e6 e8 13 19 2e 00 41 83 RSP: 0018:ffffc900056f7b20 EFLAGS: 00010246 RAX: 0000000000000007 RBX: 0000000000000000 RCX: ffffffff814662c6 RDX: 0000000000000000 RSI: ffffffff814624b9 RDI: ffffc900056f7d20 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff89a09083 R10: 0000000000000000 R11: 0000000000000000 R12: ffffc900056f7d20 R13: ffff88809513e240 R14: fffffffffffffaf8 R15: ffffffffffffff6c FS: 000000000365e940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffff6c CR3: 0000000094c6a000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_wait_thread kernel/exit.c:1378 [inline] do_wait+0x36a/0x9e0 kernel/exit.c:1449 kernel_wait4+0x14c/0x260 kernel/exit.c:1621 __do_sys_wait4+0x13f/0x150 kernel/exit.c:1649 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x41711b Code: 54 55 41 89 d4 53 48 89 f5 89 fb 48 83 ec 10 e8 1b f9 ff ff 45 31 d2 41 89 c0 49 63 d4 48 89 ee 48 63 fb b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 19 44 89 c7 89 44 24 0c e8 51 f9 ff ff 8b 44 RSP: 002b:000000000169fd80 EFLAGS: 00000246 ORIG_RAX: 000000000000003d RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 000000000041711b RDX: 0000000040000001 RSI: 000000000169fde0 RDI: ffffffffffffffff RBP: 000000000169fde0 R08: 0000000000000000 R09: 000000000365e940 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000040000001 R13: 000000000169fde0 R14: 0000000000142279 R15: 000000000169fdf0 Modules linked in: CR2: ffffffffffffff6c ---[ end trace 51da9421452509b4 ]--- RIP: 0010:wait_consider_task+0xa9/0x3b20 kernel/exit.c:1269 Code: 00 00 00 31 c0 e8 c7 1c 2e 00 4c 89 f8 48 c1 e8 03 0f b6 14 28 4c 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 40 1d 00 00 <45> 8b a6 74 04 00 00 bf 10 00 00 00 44 89 e6 e8 13 19 2e 00 41 83 RSP: 0018:ffffc900056f7b20 EFLAGS: 00010246 RAX: 0000000000000007 RBX: 0000000000000000 RCX: ffffffff814662c6 RDX: 0000000000000000 RSI: ffffffff814624b9 RDI: ffffc900056f7d20 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff89a09083 R10: 0000000000000000 R11: 0000000000000000 R12: ffffc900056f7d20 R13: ffff88809513e240 R14: fffffffffffffaf8 R15: ffffffffffffff6c FS: 000000000365e940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffff6c CR3: 0000000094c6a000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400