syzbot


general protection fault in wait_consider_task

Status: auto-closed as invalid on 2021/01/27 15:56
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+c3b604da907fb0eb2466@syzkaller.appspotmail.com
First crash: 1458d, last: 1293d
Discussions (1)
Title Replies (including bot) Last reply
general protection fault in wait_consider_task 0 (1) 2020/04/21 19:37
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 general protection fault in wait_consider_task 2 1440d 1466d 0/1 auto-closed as invalid on 2020/09/02 23:50
linux-4.19 general protection fault in wait_consider_task C done 5 1660d 1665d 1/1 fixed on 2019/12/10 03:52
linux-4.19 general protection fault in wait_consider_task (2) C error 2 610d 1318d 0/1 upstream: reported C repro on 2020/09/04 22:53
linux-4.14 general protection fault in wait_consider_task (2) 1 1224d 1224d 0/1 auto-closed as invalid on 2021/04/06 02:34

Sample crash report:
general protection fault, probably for non-canonical address 0xe0eeeaee00eeeedb: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0x07777770077776d8-0x07777770077776df]
CPU: 0 PID: 6936 Comm: syz-executor.1 Not tainted 5.9.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:wait_consider_task+0x95/0x3b70 kernel/exit.c:1269
Code: 48 8b 04 25 28 00 00 00 48 89 84 24 f0 00 00 00 31 c0 e8 de e9 2e 00 49 8d 8f 74 04 00 00 48 89 c8 48 89 4c 24 10 48 c1 e8 03 <0f> b6 14 28 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 4b
RSP: 0018:ffffc90005707b20 EFLAGS: 00010207
RAX: 00eeeeee00eeeedb RBX: 0000000000000000 RCX: 07777770077776dc
RDX: ffff88809dbec100 RSI: ffffffff814754b2 RDI: ffffc90005707d20
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff89e09083
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90005707d20
R13: ffff88809dbec100 R14: 0000000000000000 R15: 0777777007777268
FS:  0000000002dd7940(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f75d3fe3db8 CR3: 000000008e669000 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+0x376/0xa00 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: 0033:0x41798b
Code: 54 55 41 89 d4 53 48 89 f5 89 fb 48 83 ec 10 e8 7b 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 b1 f9 ff ff 8b 44
RSP: 002b:000000000169fd80 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 000000000041798b
RDX: 0000000040000001 RSI: 000000000169fde0 RDI: ffffffffffffffff
RBP: 000000000169fde0 R08: 0000000000000000 R09: 0000000002dd7940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000040000001
R13: 000000000169fde0 R14: 00000000001c8cc4 R15: 000000000169fdf0
Modules linked in:
---[ end trace 5da899dc91de6805 ]---
RIP: 0010:wait_consider_task+0x95/0x3b70 kernel/exit.c:1269
Code: 48 8b 04 25 28 00 00 00 48 89 84 24 f0 00 00 00 31 c0 e8 de e9 2e 00 49 8d 8f 74 04 00 00 48 89 c8 48 89 4c 24 10 48 c1 e8 03 <0f> b6 14 28 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 4b
RSP: 0018:ffffc90005707b20 EFLAGS: 00010207
RAX: 00eeeeee00eeeedb RBX: 0000000000000000 RCX: 07777770077776dc
RDX: ffff88809dbec100 RSI: ffffffff814754b2 RDI: ffffc90005707d20
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff89e09083
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90005707d20
R13: ffff88809dbec100 R14: 0000000000000000 R15: 0777777007777268
FS:  0000000002dd7940(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f75d3fe3db8 CR3: 000000008e669000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/09/29 15:55 upstream fb0155a09b02 1b88c6d5 .config console log report info ci-upstream-kasan-gce
2020/07/06 15:43 upstream 7cc2a8ea1048 51095195 .config console log report ci-upstream-kasan-gce
2020/04/17 18:54 upstream 7a56db0299f9 18397578 .config console log report ci-upstream-kasan-gce-smack-root
* Struck through repros no longer work on HEAD.