================================================================== BUG: KASAN: slab-out-of-bounds in cleancache_fs_enabled_mapping include/linux/cleancache.h:54 [inline] BUG: KASAN: slab-out-of-bounds in cleancache_invalidate_page include/linux/cleancache.h:108 [inline] BUG: KASAN: slab-out-of-bounds in unaccount_page_cache_page+0x6e6/0x750 mm/filemap.c:169 Read of size 4 at addr ffff8881ed050488 by task syz-executor.3/16413 CPU: 0 PID: 16413 Comm: syz-executor.3 Not tainted 5.4.233-syzkaller-00001-g0fcb7cff9462 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d8/0x241 lib/dump_stack.c:118 print_address_description+0x8c/0x600 mm/kasan/report.c:384 __kasan_report+0xf3/0x120 mm/kasan/report.c:516 kasan_report+0x30/0x60 mm/kasan/common.c:653 cleancache_fs_enabled_mapping include/linux/cleancache.h:54 [inline] cleancache_invalidate_page include/linux/cleancache.h:108 [inline] unaccount_page_cache_page+0x6e6/0x750 mm/filemap.c:169 __delete_from_page_cache+0xd0/0x600 mm/filemap.c:237 __remove_mapping+0x4a2/0x590 mm/vmscan.c:978 shrink_page_list+0x22f9/0x42c0 mm/vmscan.c:1482 shrink_inactive_list+0x533/0xfe0 mm/vmscan.c:2001 shrink_list mm/vmscan.c:2293 [inline] shrink_node_memcg+0xc42/0x2430 mm/vmscan.c:2623 shrink_node+0x389/0x14a0 mm/vmscan.c:2836 shrink_zones mm/vmscan.c:3053 [inline] do_try_to_free_pages+0x63f/0x12b0 mm/vmscan.c:3111 try_to_free_mem_cgroup_pages+0x3f6/0x9b0 mm/vmscan.c:3412 memory_max_write+0x23a/0x440 mm/memcontrol.c:6220 cgroup_file_write+0x275/0x5f0 kernel/cgroup/cgroup.c:3898 kernfs_fop_write+0x2e2/0x3e0 fs/kernfs/file.c:315 __vfs_write+0x103/0x750 fs/read_write.c:494 vfs_write+0x206/0x4e0 fs/read_write.c:558 ksys_write+0x199/0x2c0 fs/read_write.c:611 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 Allocated by task 12062: save_stack mm/kasan/common.c:70 [inline] set_track mm/kasan/common.c:78 [inline] __kasan_kmalloc+0x171/0x210 mm/kasan/common.c:529 kmalloc include/linux/slab.h:561 [inline] kzalloc include/linux/slab.h:690 [inline] __register_sysctl_table+0xdb/0x11d0 fs/proc/proc_sysctl.c:1332 __devinet_sysctl_register+0x1d3/0x2a0 net/ipv4/devinet.c:2575 devinet_sysctl_register+0x13a/0x1a0 net/ipv4/devinet.c:2615 inetdev_init+0x24e/0x450 net/ipv4/devinet.c:276 inetdev_event+0x205/0x1040 net/ipv4/devinet.c:1531 notifier_call_chain kernel/notifier.c:98 [inline] __raw_notifier_call_chain kernel/notifier.c:399 [inline] raw_notifier_call_chain+0x95/0x110 kernel/notifier.c:406 call_netdevice_notifiers_info net/core/dev.c:1670 [inline] call_netdevice_notifiers_extack net/core/dev.c:1682 [inline] call_netdevice_notifiers net/core/dev.c:1696 [inline] register_netdevice+0xeef/0x12a0 net/core/dev.c:9207 veth_newlink+0x833/0xb70 drivers/net/veth.c:1330 __rtnl_newlink net/core/rtnetlink.c:3230 [inline] rtnl_newlink+0x1511/0x2010 net/core/rtnetlink.c:3289 rtnetlink_rcv_msg+0x983/0xc70 net/core/rtnetlink.c:5262 netlink_rcv_skb+0x1d5/0x420 net/netlink/af_netlink.c:2509 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x936/0xb20 net/netlink/af_netlink.c:1347 netlink_sendmsg+0xa18/0xcf0 net/netlink/af_netlink.c:1943 sock_sendmsg_nosec net/socket.c:638 [inline] sock_sendmsg net/socket.c:658 [inline] ____sys_sendmsg+0x5ac/0x8f0 net/socket.c:2287 ___sys_sendmsg net/socket.c:2341 [inline] __sys_sendmsg+0x28b/0x380 net/socket.c:2387 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 Freed by task 17: save_stack mm/kasan/common.c:70 [inline] set_track mm/kasan/common.c:78 [inline] kasan_set_free_info mm/kasan/common.c:345 [inline] __kasan_slab_free+0x1b5/0x270 mm/kasan/common.c:487 slab_free_hook mm/slub.c:1455 [inline] slab_free_freelist_hook mm/slub.c:1494 [inline] slab_free mm/slub.c:3080 [inline] kfree+0x123/0x370 mm/slub.c:4071 sk_prot_free net/core/sock.c:1659 [inline] __sk_destruct+0x5b7/0x5e0 net/core/sock.c:1745 __rcu_reclaim kernel/rcu/rcu.h:222 [inline] rcu_do_batch+0x492/0xa00 kernel/rcu/tree.c:2167 rcu_core+0x4c8/0xcb0 kernel/rcu/tree.c:2387 __do_softirq+0x23b/0x6b7 kernel/softirq.c:292 The buggy address belongs to the object at ffff8881ed050000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 1160 bytes inside of 2048-byte region [ffff8881ed050000, ffff8881ed050800) The buggy address belongs to the page: page:ffffea0007b41400 refcount:1 mapcount:0 mapping:ffff8881f5c0c000 index:0x0 compound_mapcount: 0 flags: 0x8000000000010200(slab|head) raw: 8000000000010200 dead000000000100 dead000000000122 ffff8881f5c0c000 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 0xd2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC) set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook mm/page_alloc.c:2165 [inline] prep_new_page+0x18f/0x370 mm/page_alloc.c:2171 get_page_from_freelist+0x2d13/0x2d90 mm/page_alloc.c:3794 __alloc_pages_nodemask+0x393/0x840 mm/page_alloc.c:4891 alloc_slab_page+0x39/0x3c0 mm/slub.c:343 allocate_slab mm/slub.c:1683 [inline] new_slab+0x97/0x440 mm/slub.c:1749 new_slab_objects mm/slub.c:2505 [inline] ___slab_alloc+0x2fe/0x490 mm/slub.c:2667 __slab_alloc+0x62/0xa0 mm/slub.c:2707 slab_alloc_node mm/slub.c:2792 [inline] slab_alloc mm/slub.c:2837 [inline] __kmalloc_track_caller+0x16d/0x2b0 mm/slub.c:4449 __kmalloc_reserve net/core/skbuff.c:142 [inline] __alloc_skb+0xb4/0x4d0 net/core/skbuff.c:210 alloc_skb include/linux/skbuff.h:1079 [inline] nlmsg_new include/net/netlink.h:888 [inline] audit_buffer_alloc kernel/audit.c:1730 [inline] audit_log_start+0x49a/0x9a0 kernel/audit.c:1845 common_lsm_audit+0xd8/0x17e0 security/lsm_audit.c:452 slow_avc_audit+0x26c/0x3c0 security/selinux/avc.c:790 avc_audit security/selinux/include/avc.h:140 [inline] avc_has_perm+0x1f5/0x260 security/selinux/avc.c:1193 may_create+0x65f/0x970 security/selinux/hooks.c:1862 security_inode_create+0xa4/0x100 security/security.c:1136 may_o_create fs/namei.c:3114 [inline] lookup_open fs/namei.c:3262 [inline] do_last fs/namei.c:3401 [inline] path_openat+0x1255/0x3480 fs/namei.c:3614 page_owner free stack trace missing Memory state around the buggy address: ffff8881ed050380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8881ed050400: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc >ffff8881ed050480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8881ed050500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881ed050580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== syz-executor.3 invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=1000 CPU: 0 PID: 16413 Comm: syz-executor.3 Tainted: G B 5.4.233-syzkaller-00001-g0fcb7cff9462 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d8/0x241 lib/dump_stack.c:118 dump_header+0xd5/0x6b0 mm/oom_kill.c:460 oom_kill_process+0xeb/0x2c0 mm/oom_kill.c:974 out_of_memory+0x5e1/0x890 mm/oom_kill.c:1111 mem_cgroup_out_of_memory+0x211/0x270 mm/memcontrol.c:1611 memory_max_write+0x329/0x440 mm/memcontrol.c:6227 cgroup_file_write+0x275/0x5f0 kernel/cgroup/cgroup.c:3898 kernfs_fop_write+0x2e2/0x3e0 fs/kernfs/file.c:315 __vfs_write+0x103/0x750 fs/read_write.c:494 vfs_write+0x206/0x4e0 fs/read_write.c:558 ksys_write+0x199/0x2c0 fs/read_write.c:611 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 memory: usage 244kB, limit 0kB, failcnt 0 swap: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: anon 135168 file 131072 kernel_stack 0 slab 0 sock 126976 shmem 233472 file_mapped 135168 file_dirty 0 file_writeback 0 anon_thp 0 inactive_anon 163840 active_anon 253952 inactive_file 135168 active_file 0 unevictable 0 slab_reclaimable 0 slab_unreclaimable 0 pgfault 763884 pgmajfault 0 workingset_refault 0 workingset_activate 0 workingset_nodereclaim 0 pgrefill 100 pgscan 91 pgsteal 95 pgactivate 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz3,mems_allowed=0,oom_memcg=/syz0,task_memcg=/syz0,task=syz-executor.0,pid=377,uid=0 Memory cgroup out of memory: Killed process 377 (syz-executor.0) total-vm:48516kB, anon-rss:476kB, file-rss:15268kB, shmem-rss:4kB, UID:0 pgtables:84kB oom_score_adj:0 syz-executor.3 invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=1000 CPU: 1 PID: 16413 Comm: syz-executor.3 Tainted: G B 5.4.233-syzkaller-00001-g0fcb7cff9462 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d8/0x241 lib/dump_stack.c:118 dump_header+0xd5/0x6b0 mm/oom_kill.c:460 oom_kill_process+0xeb/0x2c0 mm/oom_kill.c:974 out_of_memory+0x5e1/0x890 mm/oom_kill.c:1111 mem_cgroup_out_of_memory+0x211/0x270 mm/memcontrol.c:1611 memory_max_write+0x329/0x440 mm/memcontrol.c:6227 cgroup_file_write+0x275/0x5f0 kernel/cgroup/cgroup.c:3898 kernfs_fop_write+0x2e2/0x3e0 fs/kernfs/file.c:315 __vfs_write+0x103/0x750 fs/read_write.c:494 vfs_write+0x206/0x4e0 fs/read_write.c:558 ksys_write+0x199/0x2c0 fs/read_write.c:611 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 memory: usage 232kB, limit 0kB, failcnt 0 swap: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: anon 135168 file 131072 kernel_stack 0 slab 0 sock 126976 shmem 233472 file_mapped 135168 file_dirty 0 file_writeback 0 anon_thp 0 inactive_anon 163840 active_anon 253952 inactive_file 135168 active_file 0 unevictable 0 slab_reclaimable 0 slab_unreclaimable 0 pgfault 763884 pgmajfault 0 workingset_refault 0 workingset_activate 0 workingset_nodereclaim 0 pgrefill 100 pgscan 91 pgsteal 95 pgactivate 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz3,mems_allowed=0,oom_memcg=/syz0,task_memcg=/syz0,task=syz-executor.0,pid=16388,uid=0 Memory cgroup out of memory: Killed process 16388 (syz-executor.0) total-vm:54536kB, anon-rss:476kB, file-rss:14336kB, shmem-rss:0kB, UID:0 pgtables:92kB oom_score_adj:1000