read_mapping_page failed! read_mapping_page failed! ================================================================== BUG: KASAN: use-after-free in jfs_lazycommit+0x7d4/0xc30 fs/jfs/jfs_txnmgr.c:2769 Read of size 4 at addr ffff888029908c94 by task jfsCommit/276 CPU: 0 PID: 276 Comm: jfsCommit Not tainted 5.15.179-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 jfs_lazycommit+0x7d4/0xc30 fs/jfs/jfs_txnmgr.c:2769 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Allocated by task 15413: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] kmem_cache_alloc_trace+0x143/0x290 mm/slub.c:3247 kmalloc include/linux/slab.h:591 [inline] kzalloc include/linux/slab.h:721 [inline] jfs_fill_super+0xfb/0xc70 fs/jfs/super.c:500 mount_bdev+0x2c9/0x3f0 fs/super.c:1400 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x2ba/0xb40 fs/namespace.c:3012 do_mount fs/namespace.c:3355 [inline] __do_sys_mount fs/namespace.c:3563 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3540 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Freed by task 4987: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kfree+0xf1/0x270 mm/slub.c:4559 generic_shutdown_super+0x130/0x310 fs/super.c:475 kill_block_super+0x7a/0xe0 fs/super.c:1427 deactivate_locked_super+0xa0/0x110 fs/super.c:335 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143 task_work_run+0x129/0x1a0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Last potentially related work creation: kasan_save_stack+0x36/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348 insert_work+0x54/0x3e0 kernel/workqueue.c:1366 __queue_work+0x963/0xd00 kernel/workqueue.c:1532 queue_work_on+0x14b/0x250 kernel/workqueue.c:1559 queue_work include/linux/workqueue.h:512 [inline] xlog_cil_push_now fs/xfs/xfs_log_cil.c:1218 [inline] xlog_cil_force_seq+0x290/0x670 fs/xfs/xfs_log_cil.c:1348 xfs_log_force_seq+0x1a3/0x440 fs/xfs/xfs_log.c:3444 __xfs_trans_commit+0x966/0xdd0 fs/xfs/xfs_trans.c:890 xfs_sync_sb+0x13c/0x190 fs/xfs/libxfs/xfs_sb.c:998 xfs_log_cover fs/xfs/xfs_log.c:1218 [inline] xfs_log_quiesce+0x4c2/0x720 fs/xfs/xfs_log.c:1035 xfs_log_clean+0xa0/0xa60 fs/xfs/xfs_log.c:1042 xfs_log_unmount+0x23/0xc0 fs/xfs/xfs_log.c:1057 xfs_unmountfs+0x1bf/0x270 fs/xfs/xfs_mount.c:1040 xfs_fs_put_super+0x65/0x2b0 fs/xfs/xfs_super.c:1095 generic_shutdown_super+0x130/0x310 fs/super.c:475 kill_block_super+0x7a/0xe0 fs/super.c:1427 deactivate_locked_super+0xa0/0x110 fs/super.c:335 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143 task_work_run+0x129/0x1a0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Second to last potentially related work creation: kasan_save_stack+0x36/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348 kvfree_call_rcu+0x118/0x8a0 kernel/rcu/tree.c:3596 drop_sysctl_table+0x317/0x460 fs/proc/proc_sysctl.c:1681 drop_sysctl_table+0x329/0x460 fs/proc/proc_sysctl.c:1684 unregister_sysctl_table+0x88/0x130 fs/proc/proc_sysctl.c:1719 neigh_sysctl_unregister+0x74/0x90 net/core/neighbour.c:3736 addrconf_sysctl_unregister net/ipv6/addrconf.c:7150 [inline] addrconf_ifdown+0x18f5/0x1be0 net/ipv6/addrconf.c:3931 addrconf_notify+0x452/0xf40 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391 call_netdevice_notifiers_extack net/core/dev.c:2061 [inline] call_netdevice_notifiers net/core/dev.c:2075 [inline] unregister_netdevice_many+0xe98/0x1840 net/core/dev.c:11133 __rtnl_newlink net/core/rtnetlink.c:3552 [inline] rtnl_newlink+0x1bbb/0x2050 net/core/rtnetlink.c:3569 rtnetlink_rcv_msg+0x99d/0xef0 net/core/rtnetlink.c:5647 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2489 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline] netlink_unicast+0x7c0/0x990 net/netlink/af_netlink.c:1337 netlink_sendmsg+0xa30/0xd60 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2436 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2490 __sys_sendmsg net/socket.c:2519 [inline] __do_sys_sendmsg net/socket.c:2528 [inline] __se_sys_sendmsg+0x19a/0x260 net/socket.c:2526 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff888029908c00 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 148 bytes inside of 256-byte region [ffff888029908c00, ffff888029908d00) The buggy address belongs to the page: page:ffffea0000a64200 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888029908e00 pfn:0x29908 head:ffffea0000a64200 order:1 compound_mapcount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0000902e80 0000000a00000006 ffff888017441b40 raw: ffff888029908e00 000000008010000f 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4175, ts 65916825979, free_ts 65845788157 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192 __alloc_pages+0x272/0x700 mm/page_alloc.c:5466 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xbb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] __kmalloc+0x1c9/0x300 mm/slub.c:4403 kmalloc include/linux/slab.h:596 [inline] kzalloc include/linux/slab.h:721 [inline] fib_create_info+0xaab/0x2570 net/ipv4/fib_semantics.c:1478 fib_table_insert+0x213/0x1f90 net/ipv4/fib_trie.c:1231 fib_magic+0x3d4/0x610 net/ipv4/fib_frontend.c:1092 fib_add_ifaddr+0x148/0x5e0 net/ipv4/fib_frontend.c:1114 fib_netdev_event+0x346/0x480 net/ipv4/fib_frontend.c:1474 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391 __dev_notify_flags+0x1fd/0x3f0 dev_change_flags+0xe7/0x190 net/core/dev.c:8928 do_setlink+0xc26/0x3d80 net/core/rtnetlink.c:2776 __rtnl_newlink net/core/rtnetlink.c:3447 [inline] rtnl_newlink+0x17bf/0x2050 net/core/rtnetlink.c:3569 rtnetlink_rcv_msg+0x99d/0xef0 net/core/rtnetlink.c:5647 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317 free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396 do_slab_free mm/slub.c:3487 [inline] ___cache_free+0xe3/0x100 mm/slub.c:3506 qlist_free_all+0x36/0x90 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x162/0x180 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xc0 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233 sock_alloc_inode+0x17/0xb0 net/socket.c:303 alloc_inode fs/inode.c:261 [inline] new_inode_pseudo+0x60/0x210 fs/inode.c:1001 sock_alloc net/socket.c:626 [inline] __sock_create+0x11f/0x8f0 net/socket.c:1450 sock_create net/socket.c:1542 [inline] __sys_socket+0x132/0x370 net/socket.c:1584 __do_sys_socket net/socket.c:1593 [inline] __se_sys_socket net/socket.c:1591 [inline] __x64_sys_socket+0x76/0x80 net/socket.c:1591 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Memory state around the buggy address: ffff888029908b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888029908c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888029908c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888029908d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888029908d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================