syzbot

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BUG: KCSAN: data-race in try_to_unmap_one / try_to_unmap_one

read to 0xffff88813af6e5b0 of 8 bytes by task 16505 on cpu 1:
 update_hiwater_rss include/linux/mm.h:2622 [inline]
 try_to_unmap_one+0x814/0x1680 mm/rmap.c:1672
 rmap_walk_anon+0x285/0x410 mm/rmap.c:2485
 try_to_unmap+0xe9/0x110
 shrink_folio_list+0xd16/0x2540 mm/vmscan.c:1252
 shrink_inactive_list mm/vmscan.c:1913 [inline]
 shrink_list mm/vmscan.c:2154 [inline]
 shrink_lruvec+0xd80/0x17a0 mm/vmscan.c:5656
 shrink_node_memcgs mm/vmscan.c:5842 [inline]
 shrink_node+0xab3/0x15c0 mm/vmscan.c:5877
 shrink_zones mm/vmscan.c:6116 [inline]
 do_try_to_free_pages+0x43d/0xce0 mm/vmscan.c:6178
 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:6493
 try_charge_memcg+0x280/0xd30 mm/memcontrol.c:2742
 obj_cgroup_charge_pages+0xab/0x130 mm/memcontrol.c:3255
 __memcg_kmem_charge_page+0x9c/0x170 mm/memcontrol.c:3281
 __alloc_pages+0x1bb/0x340 mm/page_alloc.c:4585
 alloc_pages_mpol+0xb1/0x1d0 mm/mempolicy.c:2133
 alloc_pages+0xe0/0x100 mm/mempolicy.c:2204
 vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
 __vmalloc_area_node mm/vmalloc.c:3139 [inline]
 __vmalloc_node_range+0x6d2/0xea0 mm/vmalloc.c:3320
 kvmalloc_node+0x121/0x160 mm/util.c:642
 kvmalloc include/linux/slab.h:738 [inline]
 xt_alloc_table_info+0x3d/0x80 net/netfilter/x_tables.c:1192
 do_replace net/ipv4/netfilter/arp_tables.c:970 [inline]
 do_arpt_set_ctl+0x634/0x13b0 net/ipv4/netfilter/arp_tables.c:1421
 nf_setsockopt+0x18d/0x1b0 net/netfilter/nf_sockopt.c:101
 ip_setsockopt+0xe6/0x100 net/ipv4/ip_sockglue.c:1426
 tcp_setsockopt+0x90/0xa0 net/ipv4/tcp.c:3724
 sock_common_setsockopt+0x61/0x70 net/core/sock.c:3711
 do_sock_setsockopt net/socket.c:2311 [inline]
 __sys_setsockopt+0x1d4/0x240 net/socket.c:2334
 __do_sys_setsockopt net/socket.c:2343 [inline]
 __se_sys_setsockopt net/socket.c:2340 [inline]
 __x64_sys_setsockopt+0x66/0x80 net/socket.c:2340
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

write to 0xffff88813af6e5b0 of 8 bytes by task 16512 on cpu 0:
 update_hiwater_rss include/linux/mm.h:2623 [inline]
 try_to_unmap_one+0x835/0x1680 mm/rmap.c:1672
 rmap_walk_anon+0x285/0x410 mm/rmap.c:2485
 try_to_unmap+0xe9/0x110
 shrink_folio_list+0xd16/0x2540 mm/vmscan.c:1252
 shrink_inactive_list mm/vmscan.c:1913 [inline]
 shrink_list mm/vmscan.c:2154 [inline]
 shrink_lruvec+0xd80/0x17a0 mm/vmscan.c:5656
 shrink_node_memcgs mm/vmscan.c:5842 [inline]
 shrink_node+0xab3/0x15c0 mm/vmscan.c:5877
 shrink_zones mm/vmscan.c:6116 [inline]
 do_try_to_free_pages+0x43d/0xce0 mm/vmscan.c:6178
 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:6493
 try_charge_memcg+0x280/0xd30 mm/memcontrol.c:2742
 try_charge mm/memcontrol.c:2884 [inline]
 charge_memcg mm/memcontrol.c:7210 [inline]
 __mem_cgroup_charge+0x63/0xf0 mm/memcontrol.c:7225
 mem_cgroup_charge include/linux/memcontrol.h:684 [inline]
 shmem_alloc_and_add_folio mm/shmem.c:1679 [inline]
 shmem_get_folio_gfp+0x44e/0xb40 mm/shmem.c:2054
 shmem_get_folio mm/shmem.c:2136 [inline]
 shmem_fallocate+0x582/0x860 mm/shmem.c:3153
 vfs_fallocate+0x378/0x3e0 fs/open.c:324
 ksys_fallocate fs/open.c:347 [inline]
 __do_sys_fallocate fs/open.c:355 [inline]
 __se_sys_fallocate fs/open.c:353 [inline]
 __x64_sys_fallocate+0x79/0xc0 fs/open.c:353
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x000000000000085e -> 0x000000000000091e

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 16512 Comm: syz-executor.3 Not tainted 6.7.0-rc6-syzkaller-00303-g3f82f1c3a036 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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