mmap: syz-executor.0 (2325) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.txt.
INFO: rcu_preempt detected stalls on CPUs/tasks:
	Tasks blocked on level-0 rcu_node (CPUs 0-1): P8760
	(detected by 1, t=10503 jiffies, g=653, c=652, q=367269)
syz-executor.0  R  running task    29352  8760   2744 0x00000000
 ffff8801c71cdf00 ffff8801d85ab700 ffff8801db721000 ffff8801b5c3c740
 ffff8801db721018 ffff88019496fc28 ffffffff82801dde ffff8801c71cdf00
 ffff88019496fcf8 01ffffff812086b5 ffff8801db7218f0 1ffff1003292df74
Call Trace:
 [<000000000d9bcc5c>] preempt_schedule_irq+0x5e/0xa0 kernel/sched/core.c:3704
 [<000000006c13726a>] retint_kernel+0x1b/0x2d
 [<00000000d83f1643>] find_task_by_pid_ns+0x3a/0x80 kernel/pid.c:458
 [<0000000029ef71a7>] find_task_by_vpid+0xb7/0xe0 kernel/pid.c:463
 [<0000000051a93339>] do_send_specific+0x76/0x1d0 kernel/signal.c:2947
 [<00000000f28fdf14>] do_tkill+0x1b8/0x280 kernel/signal.c:2980
 [<000000008ff22c45>] SYSC_tkill kernel/signal.c:3015 [inline]
 [<000000008ff22c45>] SyS_tkill+0x27/0x40 kernel/signal.c:3009
 [<0000000093ebc799>] do_syscall_64+0x1ad/0x570 arch/x86/entry/common.c:285
 [<0000000009cca5ca>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
syz-executor.0  R  running task    29352  8760   2744 0x00000000
 ffff8801c71cdf00 ffff8801d85ab700 ffff8801db721000 ffff8801b5c3c740
 ffff8801db721018 ffff88019496fc28 ffffffff82801dde ffff8801c71cdf00
 ffff88019496fcf8 01ffffff812086b5 ffff8801db7218f0 1ffff1003292df74
Call Trace:
 [<000000000d9bcc5c>] preempt_schedule_irq+0x5e/0xa0 kernel/sched/core.c:3704
 [<000000006c13726a>] retint_kernel+0x1b/0x2d
 [<00000000d83f1643>] find_task_by_pid_ns+0x3a/0x80 kernel/pid.c:458
 [<0000000029ef71a7>] find_task_by_vpid+0xb7/0xe0 kernel/pid.c:463
 [<0000000051a93339>] do_send_specific+0x76/0x1d0 kernel/signal.c:2947
 [<00000000f28fdf14>] do_tkill+0x1b8/0x280 kernel/signal.c:2980
 [<000000008ff22c45>] SYSC_tkill kernel/signal.c:3015 [inline]
 [<000000008ff22c45>] SyS_tkill+0x27/0x40 kernel/signal.c:3009
 [<0000000093ebc799>] do_syscall_64+0x1ad/0x570 arch/x86/entry/common.c:285
 [<0000000009cca5ca>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb