Title | Replies (including bot) | Last reply |
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KASAN: use-after-free Read in vlan_dev_real_dev | 0 (1) | 2020/12/30 19:36 |
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KASAN: use-after-free Read in vlan_dev_real_dev | 0 (1) | 2020/12/30 19:36 |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KASAN: use-after-free Read in vlan_dev_real_dev (2) net | C | error | 7 | 1084d | 1095d | 20/28 | fixed on 2022/03/08 16:11 |
================================================================== BUG: KASAN: use-after-free in is_vlan_dev include/linux/if_vlan.h:74 [inline] BUG: KASAN: use-after-free in vlan_dev_real_dev+0xf9/0x120 net/8021q/vlan_core.c:105 Read of size 4 at addr ffff88805e5d60c4 by task kworker/u4:12/14924 CPU: 0 PID: 14924 Comm: kworker/u4:12 Not tainted 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: gid-cache-wq netdevice_event_work_handler Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:232 __kasan_report mm/kasan/report.c:399 [inline] kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:416 is_vlan_dev include/linux/if_vlan.h:74 [inline] vlan_dev_real_dev+0xf9/0x120 net/8021q/vlan_core.c:105 rdma_vlan_dev_real_dev include/rdma/ib_addr.h:267 [inline] is_eth_port_of_netdev_filter.part.0+0xca/0x2c0 drivers/infiniband/core/roce_gid_mgmt.c:157 is_eth_port_of_netdev_filter+0x28/0x40 drivers/infiniband/core/roce_gid_mgmt.c:153 ib_enum_roce_netdev+0x18f/0x2b0 drivers/infiniband/core/device.c:2301 ib_enum_all_roce_netdevs+0xbd/0x130 drivers/infiniband/core/device.c:2330 netdevice_event_work_handler+0x9c/0x1b0 drivers/infiniband/core/roce_gid_mgmt.c:626 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Allocated by task 31946: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:427 [inline] ____kasan_kmalloc mm/kasan/common.c:506 [inline] ____kasan_kmalloc mm/kasan/common.c:465 [inline] __kasan_kmalloc+0x99/0xc0 mm/kasan/common.c:515 kmalloc_node include/linux/slab.h:577 [inline] kvmalloc_node+0x61/0xf0 mm/util.c:587 kvmalloc include/linux/mm.h:785 [inline] kvzalloc include/linux/mm.h:793 [inline] alloc_netdev_mqs+0x97/0xeb0 net/core/dev.c:10696 rtnl_create_link+0x1a4/0xae0 net/core/rtnetlink.c:3171 __rtnl_newlink+0xf72/0x1710 net/core/rtnetlink.c:3433 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3491 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5553 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Freed by task 31940: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:357 ____kasan_slab_free mm/kasan/common.c:360 [inline] ____kasan_slab_free mm/kasan/common.c:325 [inline] __kasan_slab_free+0xf5/0x130 mm/kasan/common.c:367 kasan_slab_free include/linux/kasan.h:199 [inline] slab_free_hook mm/slub.c:1562 [inline] slab_free_freelist_hook+0x92/0x210 mm/slub.c:1600 slab_free mm/slub.c:3161 [inline] kfree+0xe5/0x7f0 mm/slub.c:4213 kvfree+0x42/0x50 mm/util.c:616 device_release+0x9f/0x240 drivers/base/core.c:2108 kobject_cleanup lib/kobject.c:705 [inline] kobject_release lib/kobject.c:736 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:753 put_device+0x1b/0x30 drivers/base/core.c:3341 free_netdev+0x43b/0x620 net/core/dev.c:10827 ppp_destroy_interface+0x2ab/0x340 drivers/net/ppp/ppp_generic.c:3364 ppp_release+0x1bf/0x240 drivers/net/ppp/ppp_generic.c:410 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x249/0x250 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae The buggy address belongs to the object at ffff88805e5d6000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 196 bytes inside of 4096-byte region [ffff88805e5d6000, ffff88805e5d7000) The buggy address belongs to the page: page:ffffea0001797400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5e5d0 head:ffffea0001797400 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head) raw: 00fff00000010200 0000000000000000 0000000100000001 ffff888010442140 raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88805e5d5f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88805e5d6000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88805e5d6080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88805e5d6100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88805e5d6180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/04/16 13:30 | net-old | 0e0704bb9ea0 | 7e2b734b | .config | console log | report | info | ci-upstream-net-this-kasan-gce | KASAN: use-after-free Read in vlan_dev_real_dev | |||
2021/04/26 06:32 | net-next-old | 95aafe911db6 | 2a82f1b3 | .config | console log | report | info | ci-upstream-net-kasan-gce | KASAN: use-after-free Read in vlan_dev_real_dev | |||
2021/02/22 18:59 | net-next-old | d310ec03a34e | c26fb06b | .config | console log | report | info | ci-upstream-net-kasan-gce | KASAN: use-after-free Read in vlan_dev_real_dev | |||
2021/01/11 05:38 | net-old | f97844f9c518 | 2c1f2513 | .config | console log | report | info | ci-upstream-net-this-kasan-gce | ||||
2020/12/26 19:16 | net-old | 1f45dc220667 | 821e0b09 | .config | console log | report | info | ci-upstream-net-this-kasan-gce | ||||
2021/01/07 19:38 | net-next-old | 8209f5bc3b67 | c104d4a3 | .config | console log | report | info | ci-upstream-net-kasan-gce |