BUG: unable to handle page fault for address: ffff88821ac49008
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD e201067 P4D e201067 PUD e204067 PMD 10b063 PTE 77000007777770
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 29210 Comm: syz-executor.4 Not tainted 5.9.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:tlb_batch_pages_flush mm/mmu_gather.c:48 [inline]
RIP: 0010:tlb_flush_mmu_free mm/mmu_gather.c:242 [inline]
RIP: 0010:tlb_flush_mmu+0x143/0x6b0 mm/mmu_gather.c:249
Code: 00 48 8b 1b 48 85 db 74 31 e8 e9 2a cc ff 4c 8d 6b 08 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 74 08 3c 03 0f 8e 38 04 00 00 <8b> 6b 08 31 ff 89 ee e8 21 27 cc ff 85 ed 75 86 e8 b8 2a cc ff 49
RSP: 0018:ffffc9001760f708 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88821ac49000 RCX: 1ffff92002ec1ece
RDX: ffff88804e6b6300 RSI: ffffffff81aa13a7 RDI: 0000000000000286
RBP: 00000000000001fe R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88821ac49008 R14: ffffc9001760fa20 R15: ffffc9001760fa50
FS:  0000000000000000(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffff88821ac49008 CR3: 00000002193ef000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 zap_pte_range mm/memory.c:1348 [inline]
 zap_pmd_range mm/memory.c:1386 [inline]
 zap_pud_range mm/memory.c:1415 [inline]
 zap_p4d_range mm/memory.c:1436 [inline]
 unmap_page_range+0x1d2d/0x2a30 mm/memory.c:1457
 unmap_single_vma+0x198/0x300 mm/memory.c:1502
 unmap_vmas+0x168/0x2e0 mm/memory.c:1534
 exit_mmap+0x2b1/0x530 mm/mmap.c:3183
 __mmput+0x122/0x470 kernel/fork.c:1077
 mmput+0x53/0x60 kernel/fork.c:1098
 exit_mm kernel/exit.c:483 [inline]
 do_exit+0xa8b/0x29f0 kernel/exit.c:793
 do_group_exit+0x125/0x310 kernel/exit.c:903
 get_signal+0x428/0x1f00 kernel/signal.c:2757
 arch_do_signal+0x82/0x2520 arch/x86/kernel/signal.c:811
 exit_to_user_mode_loop kernel/entry/common.c:161 [inline]
 exit_to_user_mode_prepare+0x1ae/0x200 kernel/entry/common.c:192
 syscall_exit_to_user_mode+0x7e/0x2e0 kernel/entry/common.c:267
 __do_fast_syscall_32+0x6c/0x90 arch/x86/entry/common.c:138
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:160
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f9f549
Code: Bad RIP value.
RSP: 002b:00000000f559912c EFLAGS: 00000292 ORIG_RAX: 00000000000000f0
RAX: fffffffffffffe00 RBX: 0000000008baaf88 RCX: 0000000000000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000008baaf8c
RBP: 00000000f5599228 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: ffff88821ac49008
---[ end trace 42e6c0ceb523bdf7 ]---
RIP: 0010:tlb_batch_pages_flush mm/mmu_gather.c:48 [inline]
RIP: 0010:tlb_flush_mmu_free mm/mmu_gather.c:242 [inline]
RIP: 0010:tlb_flush_mmu+0x143/0x6b0 mm/mmu_gather.c:249
Code: 00 48 8b 1b 48 85 db 74 31 e8 e9 2a cc ff 4c 8d 6b 08 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 74 08 3c 03 0f 8e 38 04 00 00 <8b> 6b 08 31 ff 89 ee e8 21 27 cc ff 85 ed 75 86 e8 b8 2a cc ff 49
RSP: 0018:ffffc9001760f708 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88821ac49000 RCX: 1ffff92002ec1ece
RDX: ffff88804e6b6300 RSI: ffffffff81aa13a7 RDI: 0000000000000286
RBP: 00000000000001fe R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88821ac49008 R14: ffffc9001760fa20 R15: ffffc9001760fa50
FS:  0000000000000000(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffff88821ac49008 CR3: 00000002193ef000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400