XFS (loop4): log I/O error -5 XFS (loop4): Filesystem has been shut down due to log error (0x2). XFS (loop4): Please unmount the filesystem and rectify the problem(s). ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x77/0x1f80 kernel/locking/lockdep.c:4926 Read of size 8 at addr ffff888078fcae58 by task kworker/1:1H/1202 CPU: 1 PID: 1202 Comm: kworker/1:1H Not tainted 6.1.35-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Workqueue: xfs-log/loop4 xlog_ioend_work 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:4926 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5669 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:350 [inline] xfs_trans_committed_bulk+0xd6/0x830 fs/xfs/xfs_trans.c:773 xlog_cil_committed+0x269/0xed0 fs/xfs/xfs_log_cil.c:795 xlog_cil_process_committed+0x155/0x1a0 fs/xfs/xfs_log_cil.c:823 xlog_state_shutdown_callbacks+0x2b6/0x3a0 fs/xfs/xfs_log.c:538 xlog_force_shutdown+0x328/0x380 fs/xfs/xfs_log.c:3821 xlog_ioend_work+0xa9/0x100 fs/xfs/xfs_log.c:1402 process_one_work+0x8aa/0x11f0 kernel/workqueue.c:2289 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2436 kthread+0x26e/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Allocated by task 32108: 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 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:955 [inline] __kmalloc+0xb2/0x230 mm/slab_common.c:968 kmalloc include/linux/slab.h:558 [inline] kmem_alloc+0x15c/0x420 fs/xfs/kmem.c:20 kmem_zalloc fs/xfs/kmem.h:69 [inline] xfs_trans_ail_init+0x20/0x240 fs/xfs/xfs_trans_ail.c:902 xfs_log_mount+0x213/0x770 fs/xfs/xfs_log.c:721 xfs_mountfs+0xcbb/0x1f00 fs/xfs/xfs_mount.c:805 xfs_fs_fill_super+0xf90/0x11e0 fs/xfs/xfs_super.c:1666 get_tree_bdev+0x3fe/0x620 fs/super.c:1346 vfs_get_tree+0x88/0x270 fs/super.c:1553 do_new_mount+0x28b/0xae0 fs/namespace.c:3040 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3568 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+0x63/0xcd Freed by task 3605: 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 xfs_log_unmount+0x51/0xc0 fs/xfs/xfs_log.c:1116 xfs_unmountfs+0x12c/0x1e0 fs/xfs/xfs_mount.c:1081 xfs_fs_put_super+0x6c/0x2c0 fs/xfs/xfs_super.c:1115 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_block_super+0x7a/0xe0 fs/super.c:1450 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:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:297 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd 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:3355 drop_sysctl_table+0x317/0x460 fs/proc/proc_sysctl.c:1729 drop_sysctl_table+0x329/0x460 fs/proc/proc_sysctl.c:1732 unregister_sysctl_table+0x86/0x130 fs/proc/proc_sysctl.c:1767 neigh_sysctl_unregister+0x74/0x90 net/core/neighbour.c:3854 devinet_sysctl_unregister net/ipv4/devinet.c:2638 [inline] inetdev_destroy net/ipv4/devinet.c:327 [inline] inetdev_event+0x814/0x1490 net/ipv4/devinet.c:1602 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:1945 [inline] call_netdevice_notifiers_extack net/core/dev.c:1983 [inline] call_netdevice_notifiers net/core/dev.c:1997 [inline] unregister_netdevice_many+0xefe/0x1870 net/core/dev.c:10846 unregister_netdevice_queue+0x2e6/0x350 net/core/dev.c:10777 unregister_netdevice include/linux/netdevice.h:3045 [inline] __tun_detach+0x6b4/0x15b0 drivers/net/tun.c:684 tun_detach drivers/net/tun.c:700 [inline] tun_chr_close+0x104/0x1b0 drivers/net/tun.c:3477 __fput+0x3b7/0x890 fs/file_table.c:320 task_work_run+0x246/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:297 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd 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:3355 br_multicast_gc net/bridge/br_multicast.c:775 [inline] br_multicast_gc_work+0x1e3/0x260 net/bridge/br_multicast.c:3850 process_one_work+0x8aa/0x11f0 kernel/workqueue.c:2289 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2436 kthread+0x26e/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 The buggy address belongs to the object at ffff888078fcae00 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 88 bytes inside of 256-byte region [ffff888078fcae00, ffff888078fcaf00) The buggy address belongs to the physical page: page:ffffea0001e3f280 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x78fca head:ffffea0001e3f280 order:1 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0001bf4480 dead000000000005 ffff888012441b40 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 10424, tgid 10422 (syz-executor.0), ts 681048807756, free_ts 680738500825 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2533 prep_new_page mm/page_alloc.c:2540 [inline] get_page_from_freelist+0x32ed/0x3480 mm/page_alloc.c:4292 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5559 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+0xa71/0x1080 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:954 [inline] __kmalloc+0xa1/0x230 mm/slab_common.c:968 kmalloc_array include/linux/slab.h:605 [inline] kcalloc include/linux/slab.h:636 [inline] iter_file_splice_write+0x27b/0xfa0 fs/splice.c:625 do_splice_from fs/splice.c:764 [inline] direct_splice_actor+0xe3/0x1c0 fs/splice.c:931 splice_direct_to_actor+0x4c0/0xbd0 fs/splice.c:886 do_splice_direct+0x27f/0x3c0 fs/splice.c:974 do_sendfile+0x61c/0xff0 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1317 [inline] __se_sys_sendfile64+0xfc/0x1e0 fs/read_write.c:1309 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+0x63/0xcd page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1460 [inline] free_pcp_prepare mm/page_alloc.c:1510 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3388 free_unref_page+0x98/0x570 mm/page_alloc.c:3484 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x162/0x180 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+0x50/0x370 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] __kmem_cache_alloc_node+0x137/0x260 mm/slub.c:3437 kmalloc_trace+0x26/0xe0 mm/slab_common.c:1045 kmalloc include/linux/slab.h:553 [inline] kzalloc include/linux/slab.h:689 [inline] kernfs_iop_get_link+0x63/0x5a0 fs/kernfs/symlink.c:135 vfs_readlink+0x16a/0x400 fs/namei.c:5026 do_readlinkat+0x27f/0x3a0 fs/stat.c:480 __do_sys_readlink fs/stat.c:501 [inline] __se_sys_readlink fs/stat.c:498 [inline] __x64_sys_readlink+0x7b/0x90 fs/stat.c:498 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+0x63/0xcd Memory state around the buggy address: ffff888078fcad00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888078fcad80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888078fcae00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888078fcae80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888078fcaf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc 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