================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x77/0x1f80 kernel/locking/lockdep.c:4919 Read of size 8 at addr ffff88805abad0d8 by task jfsCommit/132 CPU: 1 PID: 132 Comm: jfsCommit Not tainted 6.1.104-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 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:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 __lock_acquire+0x77/0x1f80 kernel/locking/lockdep.c:4919 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 __mutex_lock_common kernel/locking/mutex.c:617 [inline] __mutex_lock+0x3c3/0xd80 kernel/locking/mutex.c:747 jfs_syncpt+0x22/0x90 fs/jfs/jfs_logmgr.c:1039 txEnd+0x30b/0x560 fs/jfs/jfs_txnmgr.c:549 txLazyCommit fs/jfs/jfs_txnmgr.c:2684 [inline] jfs_lazycommit+0x610/0xb60 fs/jfs/jfs_txnmgr.c:2732 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Allocated by task 6753: 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:556 [inline] kzalloc include/linux/slab.h:692 [inline] open_inline_log fs/jfs/jfs_logmgr.c:1159 [inline] lmLogOpen+0x314/0x1030 fs/jfs/jfs_logmgr.c:1069 jfs_mount_rw+0xe3/0x640 fs/jfs/jfs_mount.c:253 jfs_fill_super+0x67d/0xc40 fs/jfs/super.c:565 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:3051 do_mount fs/namespace.c:3394 [inline] __do_sys_mount fs/namespace.c:3602 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3579 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 3992: 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 lmLogClose+0x29d/0x530 jfs_umount+0x298/0x370 fs/jfs/jfs_umount.c:116 jfs_put_super+0x86/0x180 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_block_super+0x7a/0xe0 fs/super.c:1470 deactivate_locked_super+0xa0/0x110 fs/super.c:332 cleanup_mnt+0x490/0x520 fs/namespace.c:1186 task_work_run+0x246/0x300 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 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:3400 neigh_flush_dev+0x188/0xae0 net/core/neighbour.c:429 __neigh_ifdown+0x45/0x3f0 net/core/neighbour.c:446 neigh_ifdown+0x1b/0x30 net/core/neighbour.c:464 rt6_disable_ip+0x830/0x890 net/ipv6/route.c:4909 addrconf_ifdown+0x154/0x1b90 net/ipv6/addrconf.c:3782 addrconf_notify+0x3ec/0xf60 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_close_many+0x37c/0x530 net/core/dev.c:1570 unregister_netdevice_many+0x4f7/0x17a0 net/core/dev.c:10856 default_device_exit_batch+0x956/0x9d0 net/core/dev.c:11395 ops_exit_list net/core/net_namespace.c:177 [inline] cleanup_net+0x763/0xb60 net/core/net_namespace.c:604 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 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 kvfree_call_rcu+0x116/0x8c0 kernel/rcu/tree.c:3400 batadv_hardif_release net/batman-adv/hard-interface.c:55 [inline] kref_put include/linux/kref.h:65 [inline] batadv_hardif_put net/batman-adv/hard-interface.h:95 [inline] batadv_hard_if_event+0x774/0x1540 net/batman-adv/hard-interface.c:1014 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] unregister_netdevice_many+0xec1/0x17a0 net/core/dev.c:10882 default_device_exit_batch+0x956/0x9d0 net/core/dev.c:11395 ops_exit_list net/core/net_namespace.c:177 [inline] cleanup_net+0x763/0xb60 net/core/net_namespace.c:604 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 ffff88805abad000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 216 bytes inside of 1024-byte region [ffff88805abad000, ffff88805abad400) The buggy address belongs to the physical page: page:ffffea00016aea00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5aba8 head:ffffea00016aea00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0000689600 dead000000000003 ffff888012841dc0 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 0x52a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 3644, tgid 3644 (syz-executor), ts 69135292242, free_ts 17250046830 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2517 prep_new_page mm/page_alloc.c:2524 [inline] get_page_from_freelist+0x322e/0x33b0 mm/page_alloc.c:4290 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5558 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 kmalloc_trace+0x26/0xe0 mm/slab_common.c:1045 kmalloc include/linux/slab.h:556 [inline] kzalloc include/linux/slab.h:692 [inline] batadv_hardif_add_interface net/batman-adv/hard-interface.c:876 [inline] batadv_hard_if_event+0xdab/0x1540 net/batman-adv/hard-interface.c:964 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+0x145/0x1b0 net/core/dev.c:2022 register_netdevice+0x12f2/0x1720 net/core/dev.c:10132 veth_newlink+0x7fc/0xc70 drivers/net/veth.c:1775 rtnl_newlink_create net/core/rtnetlink.c:3390 [inline] __rtnl_newlink net/core/rtnetlink.c:3610 [inline] rtnl_newlink+0x14e3/0x2050 net/core/rtnetlink.c:3623 rtnetlink_rcv_msg+0x818/0xff0 net/core/rtnetlink.c:6121 netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2508 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1444 [inline] free_pcp_prepare mm/page_alloc.c:1494 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3369 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3464 free_contig_range+0x9a/0x150 mm/page_alloc.c:9518 destroy_args+0xfe/0x997 mm/debug_vm_pgtable.c:1031 debug_vm_pgtable+0x416/0x46b mm/debug_vm_pgtable.c:1354 do_one_initcall+0x265/0x8f0 init/main.c:1298 do_initcall_level+0x157/0x207 init/main.c:1371 do_initcalls+0x49/0x86 init/main.c:1387 kernel_init_freeable+0x45c/0x60f init/main.c:1626 kernel_init+0x19/0x290 init/main.c:1514 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Memory state around the buggy address: ffff88805abacf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88805abad000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88805abad080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88805abad100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88805abad180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================