syzbot

INFO: task syz.3.21145:32433 blocked for more than 125 seconds.
      Not tainted 6.12.30-syzkaller-g2199f5c4b596 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.21145     state:D stack:0     pid:32433 tgid:32433 ppid:27941  flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5945 [inline]
 __schedule+0x132b/0x1e00 kernel/sched/core.c:7789
 __schedule_loop kernel/sched/core.c:7870 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7885
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:7942
 rwsem_down_read_slowpath+0x70d/0x1240 kernel/locking/rwsem.c:1126
 __down_read_common kernel/locking/rwsem.c:1307 [inline]
 __down_read kernel/locking/rwsem.c:1320 [inline]
 down_read+0x8f/0xe0 kernel/locking/rwsem.c:1597
 mmap_read_lock include/linux/mmap_lock.h:184 [inline]
 exit_mm kernel/exit.c:549 [inline]
 do_exit+0x838/0x2630 kernel/exit.c:931
 do_group_exit+0x22a/0x300 kernel/exit.c:1094
 get_signal+0x139d/0x14f0 kernel/signal.c:2934
 arch_do_signal_or_restart+0x96/0x720 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x58/0xb0 kernel/entry/common.c:218
 do_syscall_64+0x64/0xf0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f16025c3209
RSP: 002b:00007ffc4c49e8f8 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3
RAX: fffffffffffffffc RBX: 00007f1602545600 RCX: 00007f16025c3209
RDX: 00007f1602545600 RSI: 0000000000000058 RDI: 00007ffc4c49e940
RBP: 00007f16033a26c0 R08: 00007f16033a26c0 R09: 00007ffc4c49ea27
R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffa8
R13: 000000000000006e R14: 00007ffc4c49e940 R15: 00007ffc4c49ea28
 </TASK>
INFO: task syz.3.21145:32434 blocked for more than 130 seconds.
      Not tainted 6.12.30-syzkaller-g2199f5c4b596 #0