(syz.0.16,5058,1):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xcfdff595, computed 0xefed4a20. Applying ECC. JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ================================================================== BUG: KASAN: use-after-free in ocfs2_lock_global_qf+0xb4/0x2a0 fs/ocfs2/quota_global.c:303 Read of size 8 at addr ffff8880797cd028 by task syz.0.16/5058 CPU: 1 PID: 5058 Comm: syz.0.16 Not tainted 6.1.124-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:427 kasan_report+0x136/0x160 mm/kasan/report.c:531 ocfs2_lock_global_qf+0xb4/0x2a0 fs/ocfs2/quota_global.c:303 ocfs2_get_next_id+0x24d/0x7a0 fs/ocfs2/quota_global.c:888 dquot_get_next_dqblk+0x6e/0x3a0 fs/quota/dquot.c:2717 quota_getnextquota+0x2bc/0x6b0 fs/quota/quota.c:250 __do_sys_quotactl fs/quota/quota.c:960 [inline] __se_sys_quotactl+0x2b1/0x770 fs/quota/quota.c:916 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f5b2d585d29 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5b2e452038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f5b2d775fa0 RCX: 00007f5b2d585d29 RDX: 000000000000ee01 RSI: 00000000200080c0 RDI: ffffffff80000901 RBP: 00007f5b2d601b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5b2d775fa0 R15: 00007ffd1513f2c8 Allocated by task 5058: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:563 [inline] ocfs2_local_read_info+0x1ea/0x19e0 fs/ocfs2/quota_local.c:696 dquot_load_quota_sb+0x754/0xb90 fs/quota/dquot.c:2470 dquot_load_quota_inode+0x318/0x600 fs/quota/dquot.c:2507 ocfs2_enable_quotas+0x221/0x440 fs/ocfs2/super.c:926 ocfs2_fill_super+0x4c6a/0x5720 fs/ocfs2/super.c:1139 mount_bdev+0x2c9/0x3f0 fs/super.c:1443 legacy_get_tree+0xeb/0x180 fs/fs_context.c:632 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x2ba/0xb40 fs/namespace.c:3056 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3584 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Freed by task 5058: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x25c/0x3c0 mm/slub.c:3674 ocfs2_local_free_info+0x813/0x990 fs/ocfs2/quota_local.c:869 dquot_disable+0x110f/0x1c50 fs/quota/dquot.c:2316 dquot_suspend include/linux/quotaops.h:85 [inline] ocfs2_susp_quotas+0x247/0x340 fs/ocfs2/super.c:892 ocfs2_remount+0x56e/0xc30 fs/ocfs2/super.c:647 reconfigure_super+0x43a/0x870 fs/super.c:977 do_remount fs/namespace.c:2712 [inline] path_mount+0xe69/0x1090 fs/namespace.c:3378 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3584 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486 kvfree_call_rcu+0x116/0x8c0 kernel/rcu/tree.c:3401 neigh_flush_dev+0x188/0xae0 net/core/neighbour.c:429 neigh_changeaddr+0x2c/0x40 net/core/neighbour.c:437 ndisc_netdev_event+0x17d/0x4a0 net/ipv6/ndisc.c:1881 notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:455 call_netdevice_notifiers_info net/core/dev.c:1970 [inline] call_netdevice_notifiers_extack net/core/dev.c:2008 [inline] call_netdevice_notifiers net/core/dev.c:2022 [inline] dev_set_mac_address+0x325/0x470 net/core/dev.c:8855 dev_set_mac_address_user+0x2d/0x50 net/core/dev.c:8869 do_setlink+0x7db/0x3de0 net/core/rtnetlink.c:2785 __rtnl_newlink net/core/rtnetlink.c:3605 [inline] rtnl_newlink+0x172c/0x2050 net/core/rtnetlink.c:3652 rtnetlink_rcv_msg+0x818/0xff0 net/core/rtnetlink.c:6150 netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2493 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline] netlink_unicast+0x7d8/0x970 net/netlink/af_netlink.c:1337 netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1859 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] __sys_sendto+0x480/0x600 net/socket.c:2153 __do_sys_sendto net/socket.c:2165 [inline] __se_sys_sendto net/socket.c:2161 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2161 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Second to last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486 call_rcu+0x163/0xa10 kernel/rcu/tree.c:2845 netdev_for_each_tx_queue include/linux/netdevice.h:2465 [inline] dev_shutdown+0x9d/0x440 net/sched/sch_generic.c:1489 unregister_netdevice_many+0xaac/0x17a0 net/core/dev.c:10938 default_device_exit_batch+0x956/0x9d0 net/core/dev.c:11460 ops_exit_list net/core/net_namespace.c:177 [inline] cleanup_net+0x763/0xbf0 net/core/net_namespace.c:621 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 The buggy address belongs to the object at ffff8880797cd000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 40 bytes inside of 1024-byte region [ffff8880797cd000, ffff8880797cd400) The buggy address belongs to the physical page: page:ffffea0001e5f200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x797c8 head:ffffea0001e5f200 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 dead000000000001 ffff888017c41dc0 raw: 0000000000000000 0000000000100010 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 4338, tgid 4338 (syz-executor), ts 88908123086, free_ts 88802526004 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2532 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x3731/0x38d0 mm/page_alloc.c:4328 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5605 alloc_slab_page+0x6a/0x150 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x84/0x2d0 mm/slub.c:1992 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] __kmem_cache_alloc_node+0x19f/0x260 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:935 [inline] __kmalloc_node_track_caller+0xa0/0x220 mm/slab_common.c:956 kmalloc_reserve net/core/skbuff.c:446 [inline] __alloc_skb+0x135/0x670 net/core/skbuff.c:515 alloc_skb include/linux/skbuff.h:1271 [inline] nlmsg_new include/net/netlink.h:991 [inline] inet6_rt_notify+0xdc/0x280 net/ipv6/route.c:6174 fib6_add_rt2node net/ipv6/ip6_fib.c:1256 [inline] fib6_add+0x1db2/0x3c80 net/ipv6/ip6_fib.c:1485 __ip6_ins_rt net/ipv6/route.c:1311 [inline] ip6_route_add+0x84/0x120 net/ipv6/route.c:3852 addrconf_prefix_route net/ipv6/addrconf.c:2443 [inline] addrconf_add_linklocal+0x625/0xae0 net/ipv6/addrconf.c:3263 addrconf_addr_gen+0x856/0xbe0 addrconf_dev_config net/ipv6/addrconf.c:3437 [inline] addrconf_init_auto_addrs+0x945/0xe60 net/ipv6/addrconf.c:3515 addrconf_notify+0xade/0xf60 net/ipv6/addrconf.c:3688 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1459 [inline] free_pcp_prepare mm/page_alloc.c:1509 [inline] free_unref_page_prepare+0x12a6/0x15b0 mm/page_alloc.c:3384 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3479 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422 getname_flags+0xb8/0x4f0 fs/namei.c:139 getname fs/namei.c:218 [inline] __do_sys_unlink fs/namei.c:4438 [inline] __se_sys_unlink fs/namei.c:4436 [inline] __x64_sys_unlink+0x38/0x50 fs/namei.c:4436 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Memory state around the buggy address: ffff8880797ccf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880797ccf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8880797cd000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880797cd080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880797cd100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================