================================================================== BUG: KASAN: slab-out-of-bounds in cleancache_fs_enabled_mapping include/linux/cleancache.h:56 [inline] BUG: KASAN: slab-out-of-bounds in cleancache_invalidate_page include/linux/cleancache.h:110 [inline] BUG: KASAN: slab-out-of-bounds in unaccount_page_cache_page+0x6d8/0x750 mm/filemap.c:163 Read of size 4 at addr ffff88811da44470 by task syz-executor.4/23047 CPU: 0 PID: 23047 Comm: syz-executor.4 Tainted: G W 5.15.106-syzkaller-00249-g19c0ed55a470 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 print_address_description+0x87/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:427 [inline] kasan_report+0x179/0x1c0 mm/kasan/report.c:444 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308 cleancache_fs_enabled_mapping include/linux/cleancache.h:56 [inline] cleancache_invalidate_page include/linux/cleancache.h:110 [inline] unaccount_page_cache_page+0x6d8/0x750 mm/filemap.c:163 __delete_from_page_cache+0xc6/0x5b0 mm/filemap.c:231 __remove_mapping+0x566/0x690 mm/vmscan.c:1197 shrink_page_list+0x25f1/0x5820 mm/vmscan.c:1789 shrink_inactive_list mm/vmscan.c:2261 [inline] shrink_list mm/vmscan.c:2506 [inline] shrink_lruvec+0x17e9/0x4340 mm/vmscan.c:5694 shrink_node_memcgs mm/vmscan.c:5886 [inline] shrink_node+0x1077/0x24e0 mm/vmscan.c:5916 shrink_zones mm/vmscan.c:6119 [inline] do_try_to_free_pages+0x5b6/0x1570 mm/vmscan.c:6177 try_to_free_mem_cgroup_pages+0x36c/0x850 mm/vmscan.c:6491 try_charge_memcg+0x48f/0x1550 mm/memcontrol.c:2685 try_charge mm/memcontrol.c:2810 [inline] charge_memcg+0x6b/0x1a0 mm/memcontrol.c:6812 __mem_cgroup_charge+0x37/0x130 mm/memcontrol.c:6848 mem_cgroup_charge include/linux/memcontrol.h:710 [inline] __add_to_page_cache_locked+0x2d1/0xa20 mm/filemap.c:892 add_to_page_cache_lru+0x11b/0x2c0 mm/filemap.c:984 page_cache_ra_unbounded+0x49b/0x920 mm/readahead.c:233 do_page_cache_ra mm/readahead.c:280 [inline] ondemand_readahead+0x880/0xd20 mm/readahead.c:563 page_cache_sync_ra+0x2e9/0x4d0 mm/readahead.c:593 page_cache_sync_readahead include/linux/pagemap.h:831 [inline] f2fs_readdir+0x52d/0xba0 fs/f2fs/dir.c:1117 iterate_dir+0x265/0x600 __do_sys_getdents fs/readdir.c:286 [inline] __se_sys_getdents+0x1eb/0x4b0 fs/readdir.c:271 __x64_sys_getdents+0x7b/0x90 fs/readdir.c:271 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fc5112a7149 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc508fb7168 EFLAGS: 00000246 ORIG_RAX: 000000000000004e RAX: ffffffffffffffda RBX: 00007fc5113c7050 RCX: 00007fc5112a7149 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009 RBP: 00007fc511302cd2 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe366d5b9f R14: 00007fc508fb7300 R15: 0000000000022000 Allocated by task 14736: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:433 [inline] ____kasan_kmalloc+0xdb/0x110 mm/kasan/common.c:512 __kasan_kmalloc+0x9/0x10 mm/kasan/common.c:521 kasan_kmalloc include/linux/kasan.h:227 [inline] __kmalloc+0x13a/0x270 mm/slub.c:4425 kmalloc include/linux/slab.h:613 [inline] kzalloc include/linux/slab.h:738 [inline] __register_sysctl_table+0xea/0x1240 fs/proc/proc_sysctl.c:1321 register_net_sysctl+0x21e/0x230 net/sysctl_net.c:169 __devinet_sysctl_register+0x1d3/0x2a0 net/ipv4/devinet.c:2577 devinet_sysctl_register+0x16a/0x1e0 net/ipv4/devinet.c:2617 inetdev_init+0x284/0x4b0 net/ipv4/devinet.c:276 inetdev_event+0x205/0x1040 net/ipv4/devinet.c:1530 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0x8c/0xf0 kernel/notifier.c:391 call_netdevice_notifiers_info net/core/dev.c:2005 [inline] call_netdevice_notifiers_extack net/core/dev.c:2017 [inline] call_netdevice_notifiers+0x145/0x1b0 net/core/dev.c:2031 register_netdevice+0xff1/0x1350 net/core/dev.c:10365 __ip_tunnel_create+0x2b0/0x370 net/ipv4/ip_tunnel.c:267 ip_tunnel_init_net+0x28d/0x750 net/ipv4/ip_tunnel.c:1070 vti_init_net+0x2f/0x140 net/ipv4/ip_vti.c:504 ops_init+0x1cf/0x4a0 net/core/net_namespace.c:135 setup_net+0x34b/0xb50 net/core/net_namespace.c:329 copy_net_ns+0x381/0x5f0 net/core/net_namespace.c:473 create_new_namespaces+0x416/0x670 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x126/0x180 kernel/nsproxy.c:226 ksys_unshare+0x542/0xa00 kernel/fork.c:3161 __do_sys_unshare kernel/fork.c:3235 [inline] __se_sys_unshare kernel/fork.c:3233 [inline] __x64_sys_unshare+0x38/0x40 kernel/fork.c:3233 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38 __kasan_record_aux_stack+0xd3/0xf0 mm/kasan/generic.c:348 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358 __call_rcu kernel/rcu/tree.c:2993 [inline] call_rcu+0x133/0x12a0 kernel/rcu/tree.c:3073 netlink_release+0x12df/0x16f0 net/netlink/af_netlink.c:819 __sock_release net/socket.c:649 [inline] sock_close+0xdf/0x270 net/socket.c:1317 __fput+0x3fe/0x910 fs/file_table.c:280 ____fput+0x15/0x20 fs/file_table.c:308 task_work_run+0x129/0x190 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0xc60/0x2b60 kernel/exit.c:875 do_group_exit+0x141/0x310 kernel/exit.c:997 get_signal+0x7a3/0x1630 kernel/signal.c:2891 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:865 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:172 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:301 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x61/0xcb Second to last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38 __kasan_record_aux_stack+0xd3/0xf0 mm/kasan/generic.c:348 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358 __call_rcu kernel/rcu/tree.c:2993 [inline] call_rcu+0x133/0x12a0 kernel/rcu/tree.c:3073 netlink_release+0x12df/0x16f0 net/netlink/af_netlink.c:819 __sock_release net/socket.c:649 [inline] sock_close+0xdf/0x270 net/socket.c:1317 __fput+0x3fe/0x910 fs/file_table.c:280 ____fput+0x15/0x20 fs/file_table.c:308 task_work_run+0x129/0x190 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xc4/0xe0 kernel/entry/common.c:175 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:301 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x61/0xcb The buggy address belongs to the object at ffff88811da44000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 1136 bytes inside of 2048-byte region [ffff88811da44000, ffff88811da44800) The buggy address belongs to the page: page:ffffea0004769000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11da40 head:ffffea0004769000 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043200 raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 14722, ts 1208345637955, free_ts 1208344394422 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2502 prep_new_page mm/page_alloc.c:2508 [inline] get_page_from_freelist+0x2c14/0x2cf0 mm/page_alloc.c:4291 __alloc_pages+0x386/0x7b0 mm/page_alloc.c:5569 allocate_slab mm/slub.c:1930 [inline] new_slab+0x92/0x490 mm/slub.c:1993 ___slab_alloc+0x39e/0x830 mm/slub.c:3026 __slab_alloc+0x4a/0x90 mm/slub.c:3113 slab_alloc_node mm/slub.c:3204 [inline] slab_alloc mm/slub.c:3246 [inline] __kmalloc_track_caller+0x16c/0x260 mm/slub.c:4943 kmalloc_reserve net/core/skbuff.c:357 [inline] pskb_expand_head+0x113/0x1240 net/core/skbuff.c:1727 netlink_trim+0x19b/0x230 net/netlink/af_netlink.c:1312 netlink_broadcast_filtered+0x66/0x1220 net/netlink/af_netlink.c:1517 netlink_broadcast net/netlink/af_netlink.c:1562 [inline] nlmsg_multicast include/net/netlink.h:1033 [inline] nlmsg_notify+0x101/0x1c0 net/netlink/af_netlink.c:2576 rtnl_notify net/core/rtnetlink.c:730 [inline] rtmsg_ifinfo_send net/core/rtnetlink.c:3848 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:3863 [inline] rtmsg_ifinfo+0xe7/0x120 net/core/rtnetlink.c:3869 __dev_notify_flags+0xdd/0x610 net/core/dev.c:8824 __rtnl_newlink net/core/rtnetlink.c:3470 [inline] rtnl_newlink+0x19b8/0x2040 net/core/rtnetlink.c:3510 rtnetlink_rcv_msg+0x951/0xc40 net/core/rtnetlink.c:5587 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2533 page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1370 [inline] free_pcp_prepare mm/page_alloc.c:1442 [inline] free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3441 free_unref_page+0xac/0x2c0 mm/page_alloc.c:3521 free_the_page mm/page_alloc.c:711 [inline] __free_pages+0x61/0xf0 mm/page_alloc.c:5645 __free_slab+0xec/0x1d0 mm/slub.c:2018 free_slab mm/slub.c:2033 [inline] discard_slab mm/slub.c:2039 [inline] __unfreeze_partials+0x165/0x1a0 mm/slub.c:2525 put_cpu_partial+0xc4/0x120 mm/slub.c:2605 __slab_free+0x1c8/0x290 mm/slub.c:3386 do_slab_free mm/slub.c:3505 [inline] ___cache_free+0x109/0x120 mm/slub.c:3524 qlink_free+0x4d/0x90 mm/kasan/quarantine.c:157 qlist_free_all+0x44/0xb0 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x15a/0x180 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:443 kasan_slab_alloc include/linux/kasan.h:217 [inline] slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:550 slab_alloc_node mm/slub.c:3238 [inline] slab_alloc mm/slub.c:3246 [inline] kmem_cache_alloc_trace+0xf9/0x210 mm/slub.c:3263 kmalloc include/linux/slab.h:608 [inline] kzalloc include/linux/slab.h:738 [inline] inetdev_init+0x83/0x4b0 net/ipv4/devinet.c:259 inetdev_event+0x205/0x1040 net/ipv4/devinet.c:1530 Memory state around the buggy address: ffff88811da44300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88811da44380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88811da44400: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc ^ ffff88811da44480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88811da44500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================