syzbot


INFO: task can't die in exit_to_user_mode_prepare

Status: auto-closed as invalid on 2022/01/11 12:29
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+f875e97a244d3b2983fc@syzkaller.appspotmail.com
First crash: 866d, last: 866d

Sample crash report:
INFO: task syz-executor.2:22330 can't die for more than 168 seconds.
task:syz-executor.2  state:R  running task     stack:27304 pid:22330 ppid:  1457 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4984 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6265
 schedule+0xd2/0x260 kernel/sched/core.c:6338
 exit_to_user_mode_loop kernel/entry/common.c:163 [inline]
 exit_to_user_mode_prepare+0x14a/0x290 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f777d6d6ae9
RSP: 002b:00007f777ac4c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: 0000000000001184 RBX: 00007f777d7e9f60 RCX: 00007f777d6d6ae9
RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000008100
RBP: 00007f777d730f6d R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe13ad500f R14: 00007f777ac4c300 R15: 0000000000022000
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/11/12 12:28 linux-next f2e19fd15bd7 75b04091 .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task can't die in exit_to_user_mode_prepare
* Struck through repros no longer work on HEAD.