exit_mm kernel/exit.c:501 [inline]
 do_exit+0xabc/0x2a30 kernel/exit.c:812
 do_group_exit+0x125/0x310 kernel/exit.c:922
 __do_sys_exit_group kernel/exit.c:933 [inline]
 __se_sys_exit_group kernel/exit.c:931 [inline]
 __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:931
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
------------[ cut here ]------------
WARNING: CPU: 0 PID: 16907 at mm/huge_memory.c:2301 unmap_page mm/huge_memory.c:2301 [inline]
WARNING: CPU: 0 PID: 16907 at mm/huge_memory.c:2301 split_huge_page_to_list+0x24ff/0x3bb0 mm/huge_memory.c:2676
Modules linked in:
CPU: 0 PID: 16907 Comm: syz-executor.2 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:unmap_page mm/huge_memory.c:2301 [inline]
RIP: 0010:split_huge_page_to_list+0x24ff/0x3bb0 mm/huge_memory.c:2676
Code: 89 de e8 b4 59 b5 ff 84 db 0f 85 7d e1 ff ff e8 67 53 b5 ff 48 c7 c6 e0 5c 98 89 48 89 ef e8 18 1d e9 ff c6 05 13 12 99 0b 01 <0f> 0b e9 5b e1 ff ff bb 02 00 00 00 e9 cd f0 ff ff e8 3b 53 b5 ff
RSP: 0018:ffffc9000464f288 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9001108b000
RDX: 0000000000040000 RSI: ffffffff81c0ba88 RDI: 0000000000000003
RBP: ffffea0002b40000 R08: 0000000000000029 R09: 00000000ffffffff
R10: ffffffff88f44b36 R11: 00000000ffffffff R12: ffff888010e652d8
R13: ffffea0002b40008 R14: ffffea0002b40000 R15: 0000000000000000
FS:  00007f6489cd2700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000543038 CR3: 00000000a02db000 CR4: 0000000000350ef0
DR0: 0080ffff00000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000d0602
Call Trace:
 split_huge_page include/linux/huge_mm.h:192 [inline]
 deferred_split_scan+0x5fa/0xbd0 mm/huge_memory.c:2836
 do_shrink_slab+0x42d/0xbd0 mm/vmscan.c:758
 shrink_slab+0x17c/0x6e0 mm/vmscan.c:918
 drop_slab_node+0x9c/0x160 mm/vmscan.c:953
 drop_slab+0x97/0x130 mm/vmscan.c:963
 drop_caches_sysctl_handler+0xf6/0x110 fs/drop_caches.c:66
 proc_sys_call_handler+0x346/0x630 fs/proc/proc_sysctl.c:586
 call_write_iter include/linux/fs.h:2163 [inline]
 do_iter_readv_writev+0x472/0x750 fs/read_write.c:729
 do_iter_write+0x188/0x710 fs/read_write.c:855
 vfs_iter_write+0x70/0xa0 fs/read_write.c:896
 iter_file_splice_write+0x71b/0xc60 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x110/0x180 fs/splice.c:936
 splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891
 do_splice_direct+0x1b3/0x280 fs/splice.c:979
 do_sendfile+0xae9/0x1240 fs/read_write.c:1249
 __do_sys_sendfile64 fs/read_write.c:1314 [inline]
 __se_sys_sendfile64 fs/read_write.c:1300 [inline]
 __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1300
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6489cd2188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffd5136711f R14: 00007f6489cd2300 R15: 0000000000022000