syzbot

BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1460
in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 10782, name: syz-executor.0
preempt_count: 0, expected: 0
RCU nest depth: 0, expected: 0
no locks held by syz-executor.0/10782.
irq event stamp: 4856
hardirqs last  enabled at (4855): [<ffffffff80b089e4>] __free_object+0x472/0x580 lib/debugobjects.c:421
hardirqs last disabled at (4856): [<ffffffff8000e866>] __trace_hardirqs_off+0x18/0x20 arch/riscv/kernel/trace_irq.c:25
softirqs last  enabled at (4438): [<ffffffff831b0bd0>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (4438): [<ffffffff831b0bd0>] __do_softirq+0x618/0x8fc kernel/softirq.c:587
softirqs last disabled at (4431): [<ffffffff80061288>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (4431): [<ffffffff80061288>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (4431): [<ffffffff80061288>] __irq_exit_rcu+0x142/0x1f8 kernel/softirq.c:637
CPU: 1 PID: 10782 Comm: syz-executor.0 Not tainted 5.17.0-rc1-syzkaller-00002-g0966d385830d #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff8000a228>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:113
[<ffffffff831668cc>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:119
[<ffffffff831756ba>] __dump_stack lib/dump_stack.c:88 [inline]
[<ffffffff831756ba>] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:106
[<ffffffff83175742>] dump_stack+0x1c/0x24 lib/dump_stack.c:113
[<ffffffff800baf2a>] __might_resched+0x30a/0x342 kernel/sched/core.c:9583
[<ffffffff800bafc0>] __might_sleep+0x5e/0x8e kernel/sched/core.c:9512
[<ffffffff831ab63e>] down_read+0x24/0x54 kernel/locking/rwsem.c:1460
[<ffffffff800117d4>] mmap_read_lock include/linux/mmap_lock.h:117 [inline]
[<ffffffff800117d4>] do_page_fault+0x24e/0xa3c arch/riscv/mm/fault.c:285
[<ffffffff80005724>] ret_from_exception+0x0/0x10