------------[ cut here ]------------
WARNING: ./arch/arm64/include/asm/io.h:283 at rcu_read_unlock include/linux/rcupdate.h:878 [inline], CPU#1: syz.1.360/4690
WARNING: ./arch/arm64/include/asm/io.h:283 at pte_unmap include/linux/pgtable.h:117 [inline], CPU#1: syz.1.360/4690
WARNING: ./arch/arm64/include/asm/io.h:283 at follow_pfnmap_end mm/memory.c:7077 [inline], CPU#1: syz.1.360/4690
WARNING: ./arch/arm64/include/asm/io.h:283 at generic_access_phys+0x26c/0x344 mm/memory.c:7126, CPU#1: syz.1.360/4690
Modules linked in:
CPU: 1 UID: 0 PID: 4690 Comm: syz.1.360 Tainted: G        W    L      syzkaller #0 PREEMPT 
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: linux,dummy-virt (DT)
pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ioremap_prot arch/arm64/include/asm/io.h:283 [inline]
pc : generic_access_phys+0x26c/0x344 mm/memory.c:7116
lr : rcu_read_unlock include/linux/rcupdate.h:882 [inline]
lr : pte_unmap include/linux/pgtable.h:117 [inline]
lr : follow_pfnmap_end mm/memory.c:7077 [inline]
lr : generic_access_phys+0xcc/0x344 mm/memory.c:7111
sp : ffff80008fc57830
x29: ffff80008fc578f0 x28: ffff80008fc57870 x27: 0000000000000000
x26: 0000000000000001 x25: ffff700010ef8fd0 x24: 000000000000009d
x23: ffff8000877c7e80 x22: 0000000000000000 x21: 0160000000000f92
x20: ffff000012c3b140 x19: 0000000010042000 x18: 0000000000000000
x17: ffff800080c267fc x16: ffff800080e49be0 x15: ffff800080e496d8
x14: ffff800080a8ead0 x13: ffff800089e66530 x12: ffff600003ad9e01
x11: 1fffe00003ad9e00 x10: ffff600003ad9e00 x9 : dfff800000000000
x8 : ffff00001d6cf000 x7 : 0000000000000001 x6 : ffff600003ad9e00
x5 : ffff00001d6cf000 x4 : 0000000000000001 x3 : 1fffe00002b7f090
x2 : 0000000000000000 x1 : 0000000000001000 x0 : 000000003fffffff
Call trace:
 rcu_read_unlock include/linux/rcupdate.h:878 [inline] (P)
 pte_unmap include/linux/pgtable.h:117 [inline] (P)
 follow_pfnmap_end mm/memory.c:7077 [inline] (P)
 generic_access_phys+0x26c/0x344 mm/memory.c:7126 (P)
 kernfs_vma_access+0x14c/0x1f0 fs/kernfs/file.c:437
 __access_remote_vm+0x3dc/0x600 mm/memory.c:7194
 access_remote_vm+0x10/0x20 mm/memory.c:7241
 mem_rw+0x16c/0x580 fs/proc/base.c:912
 mem_read+0x14/0x20 fs/proc/base.c:940
 vfs_read+0x190/0xa18 fs/read_write.c:572
 ksys_pread64+0x118/0x154 fs/read_write.c:764
 __do_compat_sys_aarch32_pread64 arch/arm64/kernel/sys32.c:73 [inline]
 __se_compat_sys_aarch32_pread64 arch/arm64/kernel/sys32.c:70 [inline]
 __arm64_compat_sys_aarch32_pread64+0xb0/0x110 arch/arm64/kernel/sys32.c:70
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x74/0x240 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:121
 do_el0_svc_compat+0x40/0x58 arch/arm64/kernel/syscall.c:146
 el0_svc_compat+0x54/0x264 arch/arm64/kernel/entry-common.c:909
 el0t_32_sync_handler+0x88/0xac arch/arm64/kernel/entry-common.c:927
 el0t_32_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:595
irq event stamp: 18652
hardirqs last  enabled at (18651): [<ffff8000859d61ec>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:210 [inline]
hardirqs last  enabled at (18651): [<ffff8000859d61ec>] _raw_spin_unlock_irqrestore+0x80/0xb4 kernel/locking/spinlock.c:221
hardirqs last disabled at (18652): [<ffff8000859a90d0>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:445
softirqs last  enabled at (18546): [<ffff80008023b5b8>] softirq_handle_end kernel/softirq.c:491 [inline]
softirqs last  enabled at (18546): [<ffff80008023b5b8>] handle_softirqs+0xa98/0x1048 kernel/softirq.c:673
softirqs last disabled at (18539): [<ffff8000800103d4>] __do_softirq+0x14/0x20 kernel/softirq.c:679
---[ end trace 0000000000000000 ]---