kernel panic: corrupted stack end in sys_nanosleep (2)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: a926c025 net: wwan: mhi_wwan_ctrl: Fix RX buffer starvation
git tree: net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=140f7401d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=2c0b14609f12d53
dashboard link: https://syzkaller.appspot.com/bug?extid=92280ca29be96da056bd
CC: [linux-...@vger.kernel.org tg...@linutronix.de net...@vger.kernel.org]

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+92280c...@syzkaller.appspotmail.com

Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 0 PID: 8403 Comm: syz-fuzzer Not tainted 5.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x141/0x1d7 lib/dump_stack.c:120
panic+0x306/0x73d kernel/panic.c:231
schedule_debug kernel/sched/core.c:4822 [inline]
__schedule+0x21a2/0x21b0 kernel/sched/core.c:4967
schedule+0xcf/0x270 kernel/sched/core.c:5152
freezable_schedule include/linux/freezer.h:172 [inline]
do_nanosleep+0x268/0x6a0 kernel/time/hrtimer.c:1896
hrtimer_nanosleep+0x1f9/0x4a0 kernel/time/hrtimer.c:1949
__do_sys_nanosleep kernel/time/hrtimer.c:1983 [inline]
__se_sys_nanosleep kernel/time/hrtimer.c:1970 [inline]
__x64_sys_nanosleep+0x1dc/0x260 kernel/time/hrtimer.c:1970
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x46dabd
Code: 8b 44 24 20 b9 40 42 0f 00 f7 f1 48 89 04 24 b8 e8 03 00 00 f7 e2 48 89 44 24 08 48 89 e7 be 00 00 00 00 b8 23 00 00 00 0f 05 <48> 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc cc cc cc cc cc cc
RSP: 002b:000000c000305dd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000023
RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 000000000046dabd
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000c000305dd8
RBP: 000000c000305de8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000206 R12: 0000000000000003
R13: 000000c000001500 R14: 0000ffffffffffff R15: 0000000000008000
Kernel Offset: disabled
Rebooting in 86400 seconds..


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.