================================================================== BUG: KASAN: slab-use-after-free in lbmIODone+0xed4/0x11f0 fs/jfs/jfs_logmgr.c:2184 Read of size 4 at addr ffff888029ad2b08 by task ksoftirqd/1/27 CPU: 1 PID: 27 Comm: ksoftirqd/1 Not tainted 6.6.0-syzkaller-16159-g3ca112b71f35 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 lbmIODone+0xed4/0x11f0 fs/jfs/jfs_logmgr.c:2184 bio_endio+0x593/0x6a0 block/bio.c:1603 req_bio_endio block/blk-mq.c:788 [inline] blk_update_request+0x67b/0x1780 block/blk-mq.c:933 blk_mq_end_request+0x57/0x520 block/blk-mq.c:1056 lo_complete_rq+0x232/0x2f0 drivers/block/loop.c:370 blk_complete_reqs+0xb2/0xf0 block/blk-mq.c:1131 __do_softirq+0x21a/0x968 kernel/softirq.c:553 run_ksoftirqd kernel/softirq.c:921 [inline] run_ksoftirqd+0x31/0x60 kernel/softirq.c:913 smpboot_thread_fn+0x660/0xa00 kernel/smpboot.c:164 kthread+0x33c/0x440 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Allocated by task 6822: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:600 [inline] lbmLogInit fs/jfs/jfs_logmgr.c:1822 [inline] lmLogInit+0x3ec/0x1a80 fs/jfs/jfs_logmgr.c:1270 open_inline_log fs/jfs/jfs_logmgr.c:1175 [inline] lmLogOpen+0x7ea/0x1410 fs/jfs/jfs_logmgr.c:1069 jfs_mount_rw+0x2ea/0x6f0 fs/jfs/jfs_mount.c:257 jfs_fill_super+0x9d2/0xd20 fs/jfs/super.c:565 mount_bdev+0x1f3/0x2e0 fs/super.c:1650 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8c/0x370 fs/super.c:1771 do_new_mount fs/namespace.c:3337 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3664 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount fs/namespace.c:3863 [inline] __ia32_sys_mount+0x291/0x310 fs/namespace.c:3863 do_syscall_32_irqs_on arch/x86/entry/common.c:164 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:230 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:255 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Freed by task 6665: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:164 [inline] slab_free_hook mm/slub.c:1800 [inline] slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826 slab_free mm/slub.c:3809 [inline] __kmem_cache_free+0xc0/0x180 mm/slub.c:3822 lbmLogShutdown fs/jfs/jfs_logmgr.c:1865 [inline] lmLogShutdown+0x379/0x780 fs/jfs/jfs_logmgr.c:1684 lmLogClose+0x577/0x710 fs/jfs/jfs_logmgr.c:1460 jfs_umount+0x2f0/0x430 fs/jfs/jfs_umount.c:114 jfs_put_super+0x88/0x1d0 fs/jfs/super.c:194 generic_shutdown_super+0x161/0x3c0 fs/super.c:696 kill_block_super+0x3b/0x90 fs/super.c:1667 deactivate_locked_super+0xbc/0x1a0 fs/super.c:484 deactivate_super+0xde/0x100 fs/super.c:517 cleanup_mnt+0x222/0x450 fs/namespace.c:1256 task_work_run+0x14d/0x240 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x215/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296 __do_fast_syscall_32+0x6d/0xe0 arch/x86/entry/common.c:233 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:255 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 insert_work+0x38/0x230 kernel/workqueue.c:1647 __queue_work+0x5d0/0x1050 kernel/workqueue.c:1799 queue_work_on+0xed/0x110 kernel/workqueue.c:1834 queue_work include/linux/workqueue.h:562 [inline] netdevice_queue_work drivers/infiniband/core/roce_gid_mgmt.c:659 [inline] netdevice_event+0x6be/0x9a0 drivers/infiniband/core/roce_gid_mgmt.c:802 notifier_call_chain+0xb6/0x3b0 kernel/notifier.c:93 call_netdevice_notifiers_info+0xbe/0x130 net/core/dev.c:1965 call_netdevice_notifiers_extack net/core/dev.c:2003 [inline] call_netdevice_notifiers net/core/dev.c:2017 [inline] __dev_notify_flags+0x12d/0x2e0 net/core/dev.c:8642 dev_change_flags+0x122/0x170 net/core/dev.c:8680 do_setlink+0x1a2f/0x3fa0 net/core/rtnetlink.c:2916 __rtnl_newlink+0xc1f/0x1930 net/core/rtnetlink.c:3707 rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3754 rtnetlink_rcv_msg+0x3c7/0xe00 net/core/rtnetlink.c:6558 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2545 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 __sys_sendto+0x255/0x340 net/socket.c:2190 __do_compat_sys_socketcall+0x5df/0x700 net/compat.c:475 do_syscall_32_irqs_on arch/x86/entry/common.c:164 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:230 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:255 entry_SYSENTER_compat_after_hwframe+0x70/0x7a The buggy address belongs to the object at ffff888029ad2b00 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 8 bytes inside of freed 192-byte region [ffff888029ad2b00, ffff888029ad2bc0) The buggy address belongs to the physical page: page:ffffea0000a6b480 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x29ad2 flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000800 ffff888013042a00 dead000000000100 dead000000000122 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12800(GFP_NOWAIT|__GFP_NOWARN|__GFP_NORETRY), pid 6262, tgid 6260 (syz-executor.2), ts 218086671373, free_ts 218046817254 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1544 [inline] get_page_from_freelist+0xa25/0x36c0 mm/page_alloc.c:3312 __alloc_pages_slowpath.constprop.0+0x2dd/0x2360 mm/page_alloc.c:4102 __alloc_pages+0x411/0x4a0 mm/page_alloc.c:4581 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_slab_page mm/slub.c:1872 [inline] allocate_slab+0xa1/0x380 mm/slub.c:2017 new_slab mm/slub.c:2070 [inline] ___slab_alloc+0x8c7/0x1580 mm/slub.c:3223 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322 __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] __kmem_cache_alloc_node+0x131/0x310 mm/slub.c:3517 __do_kmalloc_node mm/slab_common.c:1006 [inline] __kmalloc_node+0x52/0x110 mm/slab_common.c:1014 kmalloc_array_node include/linux/slab.h:698 [inline] kcalloc_node include/linux/slab.h:703 [inline] memcg_alloc_slab_cgroups+0xa9/0x170 mm/memcontrol.c:2967 memcg_slab_post_alloc_hook+0xaa/0x380 mm/slab.h:532 slab_post_alloc_hook mm/slab.h:771 [inline] slab_alloc_node mm/slub.c:3478 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc_lru+0x24b/0x780 mm/slub.c:3509 xas_alloc+0x348/0x460 lib/xarray.c:375 xas_create+0x63b/0x1020 lib/xarray.c:677 xas_store+0x8b/0x1950 lib/xarray.c:787 shmem_add_to_page_cache+0x681/0xaf0 mm/shmem.c:789 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare+0x4f8/0xa90 mm/page_alloc.c:2347 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2487 rcu_do_batch kernel/rcu/tree.c:2158 [inline] rcu_core+0x830/0x1c50 kernel/rcu/tree.c:2431 __do_softirq+0x21a/0x968 kernel/softirq.c:553 Memory state around the buggy address: ffff888029ad2a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888029ad2a80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff888029ad2b00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888029ad2b80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff888029ad2c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================