================================================================== BUG: KASAN: slab-use-after-free in lbmIODone+0xeb7/0x11d0 fs/jfs/jfs_logmgr.c:2179 Read of size 4 at addr ffff88802b077c08 by task ksoftirqd/1/20 CPU: 1 PID: 20 Comm: ksoftirqd/1 Not tainted 6.2.0-syzkaller-12485-gf3a2439f20d9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:319 print_report mm/kasan/report.c:430 [inline] kasan_report+0x11c/0x130 mm/kasan/report.c:536 lbmIODone+0xeb7/0x11d0 fs/jfs/jfs_logmgr.c:2179 bio_endio+0x651/0x810 block/bio.c:1606 req_bio_endio block/blk-mq.c:795 [inline] blk_update_request+0x436/0x1650 block/blk-mq.c:927 blk_mq_end_request+0x4f/0x80 block/blk-mq.c:1054 lo_complete_rq+0x1c6/0x280 drivers/block/loop.c:370 blk_complete_reqs+0xad/0xe0 block/blk-mq.c:1132 __do_softirq+0x2e3/0xae3 kernel/softirq.c:571 run_ksoftirqd kernel/softirq.c:934 [inline] run_ksoftirqd+0x31/0x60 kernel/softirq.c:926 smpboot_thread_fn+0x659/0xa20 kernel/smpboot.c:164 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Allocated by task 27372: kasan_save_stack+0x22/0x40 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 mm/kasan/common.c:333 [inline] __kasan_kmalloc+0xa3/0xb0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:580 [inline] lbmLogInit fs/jfs/jfs_logmgr.c:1822 [inline] lmLogInit+0x3b3/0x1a50 fs/jfs/jfs_logmgr.c:1270 open_inline_log fs/jfs/jfs_logmgr.c:1175 [inline] lmLogOpen+0x7db/0x1430 fs/jfs/jfs_logmgr.c:1069 jfs_mount_rw+0x2ed/0x6d0 fs/jfs/jfs_mount.c:257 jfs_fill_super+0xa00/0xd40 fs/jfs/super.c:565 mount_bdev+0x351/0x410 fs/super.c:1371 legacy_get_tree+0x109/0x220 fs/fs_context.c:610 vfs_get_tree+0x8d/0x350 fs/super.c:1501 do_new_mount fs/namespace.c:3042 [inline] path_mount+0x1342/0x1e40 fs/namespace.c:3372 do_mount fs/namespace.c:3385 [inline] __do_sys_mount fs/namespace.c:3594 [inline] __se_sys_mount fs/namespace.c:3571 [inline] __x64_sys_mount+0x283/0x300 fs/namespace.c:3571 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 19582: kasan_save_stack+0x22/0x40 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:521 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x13b/0x1a0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:162 [inline] __cache_free mm/slab.c:3390 [inline] __do_kmem_cache_free mm/slab.c:3577 [inline] __kmem_cache_free+0xcd/0x2c0 mm/slab.c:3584 lbmLogShutdown fs/jfs/jfs_logmgr.c:1865 [inline] lmLogShutdown+0x349/0x6e0 fs/jfs/jfs_logmgr.c:1684 lmLogClose+0x58a/0x720 fs/jfs/jfs_logmgr.c:1460 jfs_umount+0x2ef/0x430 fs/jfs/jfs_umount.c:114 jfs_put_super+0x85/0x1d0 fs/jfs/super.c:194 generic_shutdown_super+0x158/0x480 fs/super.c:491 kill_block_super+0x9b/0xf0 fs/super.c:1398 deactivate_locked_super+0x98/0x160 fs/super.c:331 deactivate_super+0xb1/0xd0 fs/super.c:362 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1177 task_work_run+0x16f/0x270 kernel/task_work.c:179 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+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd Last potentially related work creation: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 __kasan_record_aux_stack+0x7b/0x90 mm/kasan/generic.c:491 insert_work+0x48/0x350 kernel/workqueue.c:1361 __queue_work+0x693/0x1440 kernel/workqueue.c:1524 queue_work_on+0xf2/0x110 kernel/workqueue.c:1552 queue_work include/linux/workqueue.h:504 [inline] netdevice_queue_work drivers/infiniband/core/roce_gid_mgmt.c:659 [inline] netdevice_event+0x5e9/0x8f0 drivers/infiniband/core/roce_gid_mgmt.c:802 notifier_call_chain+0xb5/0x200 kernel/notifier.c:87 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1937 call_netdevice_notifiers_extack net/core/dev.c:1975 [inline] call_netdevice_notifiers net/core/dev.c:1989 [inline] unregister_netdevice_many_notify+0xa33/0x19f0 net/core/dev.c:10841 rtnl_newlink_create net/core/rtnetlink.c:3471 [inline] __rtnl_newlink+0x1485/0x1840 net/core/rtnetlink.c:3657 rtnl_newlink+0x68/0xa0 net/core/rtnetlink.c:3670 rtnetlink_rcv_msg+0x43d/0xd50 net/core/rtnetlink.c:6174 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2574 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1942 sock_sendmsg_nosec net/socket.c:722 [inline] sock_sendmsg+0xde/0x190 net/socket.c:745 ____sys_sendmsg+0x71c/0x900 net/socket.c:2504 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2558 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2587 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Second to last potentially related work creation: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 __kasan_record_aux_stack+0x7b/0x90 mm/kasan/generic.c:491 insert_work+0x48/0x350 kernel/workqueue.c:1361 __queue_work+0x693/0x1440 kernel/workqueue.c:1524 queue_work_on+0xf2/0x110 kernel/workqueue.c:1552 queue_work include/linux/workqueue.h:504 [inline] netdevice_queue_work drivers/infiniband/core/roce_gid_mgmt.c:659 [inline] netdevice_event+0x5e9/0x8f0 drivers/infiniband/core/roce_gid_mgmt.c:802 notifier_call_chain+0xb5/0x200 kernel/notifier.c:87 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1937 call_netdevice_notifiers_extack net/core/dev.c:1975 [inline] call_netdevice_notifiers net/core/dev.c:1989 [inline] register_netdevice+0xfb4/0x1640 net/core/dev.c:10077 veth_newlink+0x351/0x9c0 drivers/net/veth.c:1806 rtnl_newlink_create net/core/rtnetlink.c:3440 [inline] __rtnl_newlink+0x10c2/0x1840 net/core/rtnetlink.c:3657 rtnl_newlink+0x68/0xa0 net/core/rtnetlink.c:3670 rtnetlink_rcv_msg+0x43d/0xd50 net/core/rtnetlink.c:6174 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2574 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1942 sock_sendmsg_nosec net/socket.c:722 [inline] sock_sendmsg+0xde/0x190 net/socket.c:745 ____sys_sendmsg+0x71c/0x900 net/socket.c:2504 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2558 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2587 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88802b077c00 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 8 bytes inside of freed 192-byte region [ffff88802b077c00, ffff88802b077cc0) The buggy address belongs to the physical page: page:ffffea0000ac1dc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2b077 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffff888012440000 ffffea00015f5ed0 ffffea0000b1b690 raw: 0000000000000000 ffff88802b077000 0000000100000010 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 0x342040(__GFP_IO|__GFP_NOWARN|__GFP_COMP|__GFP_HARDWALL|__GFP_THISNODE), pid 5918, tgid 5900 (syz-executor.5), ts 213854646104, free_ts 213839161176 prep_new_page mm/page_alloc.c:2552 [inline] get_page_from_freelist+0x1190/0x2f80 mm/page_alloc.c:4325 __alloc_pages+0x1cb/0x5c0 mm/page_alloc.c:5591 __alloc_pages_node include/linux/gfp.h:237 [inline] kmem_getpages mm/slab.c:1360 [inline] cache_grow_begin+0x9b/0x3b0 mm/slab.c:2570 cache_alloc_refill+0x27f/0x380 mm/slab.c:2943 ____cache_alloc mm/slab.c:3019 [inline] ____cache_alloc mm/slab.c:3002 [inline] __do_cache_alloc mm/slab.c:3202 [inline] slab_alloc_node mm/slab.c:3250 [inline] __kmem_cache_alloc_node+0x360/0x3f0 mm/slab.c:3541 __do_kmalloc_node mm/slab_common.c:966 [inline] __kmalloc+0x4a/0xd0 mm/slab_common.c:980 kmalloc_array include/linux/slab.h:636 [inline] kcalloc include/linux/slab.h:667 [inline] ext4_find_extent+0xa3c/0xd20 fs/ext4/extents.c:914 ext4_ext_map_blocks+0x21b/0x6310 fs/ext4/extents.c:4102 ext4_map_blocks+0x779/0x18d0 fs/ext4/inode.c:651 ext4_alloc_file_blocks.isra.0+0x2df/0xb80 fs/ext4/extents.c:4470 ext4_zero_range fs/ext4/extents.c:4587 [inline] ext4_fallocate+0x1678/0x4470 fs/ext4/extents.c:4722 vfs_fallocate+0x48b/0xe40 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0xd3/0x140 fs/open.c:353 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 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:1453 [inline] free_pcp_prepare+0x668/0xb50 mm/page_alloc.c:1503 free_unref_page_prepare mm/page_alloc.c:3387 [inline] free_unref_page+0x1d/0x490 mm/page_alloc.c:3482 vfree+0x180/0x7e0 mm/vmalloc.c:2742 delayed_vfree_work+0x57/0x70 mm/vmalloc.c:2663 process_one_work+0x9bf/0x1820 kernel/workqueue.c:2390 worker_thread+0x669/0x1090 kernel/workqueue.c:2537 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Memory state around the buggy address: ffff88802b077b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802b077b80: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88802b077c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88802b077c80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88802b077d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================