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KASAN: use-after-free Read in process_one_work (2)

Status: auto-obsoleted due to no activity on 2025/07/10 20:36
First crash: 99d, last: 99d
▶ ▼ Similar bugs (10)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 KASAN: use-after-free Read in process_one_work missing-backport origin:downstream 19 C unreliable 678 4d23h 993d 0/2 upstream: reported C repro on 2022/10/31 08:36
android-5-10 BUG: corrupted list in process_one_work 19 C error done 33 2d16h 1197d 2/2 upstream: reported C repro on 2022/04/10 06:05
android-6-1 KASAN: use-after-free Read in process_one_work origin:upstream missing-backport 19 C error 880 1h02m 790d 0/2 upstream: reported C repro on 2023/05/21 23:04
upstream KASAN: use-after-free Read in process_one_work 19 1 2866d 2831d 0/29 closed as invalid on 2018/02/14 13:45
android-54 KASAN: use-after-free Read in process_one_work 19 1 852d 852d 0/2 auto-obsoleted due to no activity on 2023/07/18 18:33
upstream KMSAN: kernel-infoleak in copyout (2) net 17 C 6723 773d 1941d 22/29 fixed on 2023/06/08 14:41
upstream KASAN: global-out-of-bounds Read in process_one_work kernel 17 1 430d 426d 0/29 auto-obsoleted due to no activity on 2024/08/14 00:54
upstream general protection fault in process_one_work (2) kernel 2 1 1462d 1458d 0/29 auto-closed as invalid on 2021/09/17 12:34
upstream KASAN: slab-out-of-bounds Read in process_one_work kernel 17 1 996d 992d 0/29 auto-obsoleted due to no activity on 2023/01/25 20:05
upstream KASAN: slab-use-after-free Read in process_one_work kernel 19 2 679d 682d 0/29 auto-obsoleted due to no activity on 2023/12/08 17:35

Sample crash report:
==================================================================
BUG: KASAN: use-after-free in __list_del_entry_valid+0xa2/0x120 lib/list_debug.c:62
Read of size 8 at addr ffff8881d7574b88 by task kworker/0:4/379

CPU: 0 PID: 379 Comm: kworker/0:4 Tainted: G        W         5.4.290-syzkaller-00002-g41adfeb3d639 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_long br_fdb_cleanup
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d8/0x241 lib/dump_stack.c:118
 print_address_description+0x8c/0x600 mm/kasan/report.c:384
 __kasan_report+0xf3/0x120 mm/kasan/report.c:516
 kasan_report+0x30/0x60 mm/kasan/common.c:653
 __list_del_entry_valid+0xa2/0x120 lib/list_debug.c:62
 __list_del_entry include/linux/list.h:131 [inline]
 list_del_init include/linux/list.h:190 [inline]
 process_one_work+0x471/0xd20 kernel/workqueue.c:2234
 worker_thread+0xaef/0x1470 kernel/workqueue.c:2436
 kthread+0x2da/0x360 kernel/kthread.c:288
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354

Allocated by task 345:
 save_stack mm/kasan/common.c:70 [inline]
 set_track mm/kasan/common.c:78 [inline]
 __kasan_kmalloc+0x171/0x210 mm/kasan/common.c:529
 __kmalloc_node include/linux/slab.h:422 [inline]
 kmalloc_node include/linux/slab.h:599 [inline]
 kvmalloc_node+0x7e/0xf0 mm/util.c:596
 kvmalloc include/linux/mm.h:761 [inline]
 kvzalloc include/linux/mm.h:769 [inline]
 alloc_netdev_mqs+0x85/0xc70 net/core/dev.c:9629
 usbnet_probe+0x1fc/0x28b0 drivers/net/usb/usbnet.c:1686
 usb_probe_interface+0x5aa/0xa90 drivers/usb/core/driver.c:361
 really_probe+0x4dd/0xb80 drivers/base/dd.c:571
 driver_probe_device+0xe5/0x240 drivers/base/dd.c:752
 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:432
 __device_attach+0x31c/0x490 drivers/base/dd.c:933
 bus_probe_device+0xbd/0x1e0 drivers/base/bus.c:492
 device_add+0x88d/0xbb0 drivers/base/core.c:2911
 usb_set_configuration+0x18ce/0x1e30 drivers/usb/core/message.c:2029
 generic_probe+0x84/0x140 drivers/usb/core/generic.c:210
 really_probe+0x4dd/0xb80 drivers/base/dd.c:571
 driver_probe_device+0xe5/0x240 drivers/base/dd.c:752
 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:432
 __device_attach+0x31c/0x490 drivers/base/dd.c:933
 bus_probe_device+0xbd/0x1e0 drivers/base/bus.c:492
 device_add+0x88d/0xbb0 drivers/base/core.c:2911
 usb_new_device+0xbbc/0x1760 drivers/usb/core/hub.c:2581
 hub_port_connect drivers/usb/core/hub.c:5214 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5333 [inline]
 port_event drivers/usb/core/hub.c:5479 [inline]
 hub_event+0x2c62/0x4d50 drivers/usb/core/hub.c:5561
 process_one_work+0x765/0xd20 kernel/workqueue.c:2290
 worker_thread+0xaef/0x1470 kernel/workqueue.c:2436
 kthread+0x2da/0x360 kernel/kthread.c:288
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354

Freed by task 108:
 save_stack mm/kasan/common.c:70 [inline]
 set_track mm/kasan/common.c:78 [inline]
 kasan_set_free_info mm/kasan/common.c:345 [inline]
 __kasan_slab_free+0x1b5/0x270 mm/kasan/common.c:487
 slab_free_hook mm/slub.c:1455 [inline]
 slab_free_freelist_hook mm/slub.c:1494 [inline]
 slab_free mm/slub.c:3080 [inline]
 kfree+0x123/0x370 mm/slub.c:4071
 device_release+0x6b/0x190 drivers/base/core.c:1776
 kobject_cleanup lib/kobject.c:716 [inline]
 kobject_release lib/kobject.c:747 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1e6/0x2f0 lib/kobject.c:764
 usb_unbind_interface+0x1d0/0x840 drivers/usb/core/driver.c:423
 __device_release_driver drivers/base/dd.c:1188 [inline]
 device_release_driver_internal+0x50a/0x7b0 drivers/base/dd.c:1220
 bus_remove_device+0x2ca/0x340 drivers/base/bus.c:534
 device_del+0x65a/0xfa0 drivers/base/core.c:3088
 usb_disable_device+0x38c/0x750 drivers/usb/core/message.c:1277
 usb_disconnect+0x32c/0x890 drivers/usb/core/hub.c:2237
 hub_port_connect drivers/usb/core/hub.c:5057 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5333 [inline]
 port_event drivers/usb/core/hub.c:5479 [inline]
 hub_event+0x1c75/0x4d50 drivers/usb/core/hub.c:5561
 process_one_work+0x765/0xd20 kernel/workqueue.c:2290
 worker_thread+0xaef/0x1470 kernel/workqueue.c:2436
 kthread+0x2da/0x360 kernel/kthread.c:288
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354

The buggy address belongs to the object at ffff8881d7574000
 which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 2952 bytes inside of
 4096-byte region [ffff8881d7574000, ffff8881d7575000)
The buggy address belongs to the page:
page:ffffea00075d5c00 refcount:1 mapcount:0 mapping:ffff8881f5c0c280 index:0x0 compound_mapcount: 0
flags: 0x8000000000010200(slab|head)
raw: 8000000000010200 dead000000000100 dead000000000122 ffff8881f5c0c280
raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL)
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook mm/page_alloc.c:2165 [inline]
 prep_new_page+0x18f/0x370 mm/page_alloc.c:2171
 get_page_from_freelist+0x2d13/0x2d90 mm/page_alloc.c:3794
 __alloc_pages_nodemask+0x393/0x840 mm/page_alloc.c:4893
 alloc_slab_page+0x39/0x3c0 mm/slub.c:343
 allocate_slab mm/slub.c:1683 [inline]
 new_slab+0x97/0x440 mm/slub.c:1749
 new_slab_objects mm/slub.c:2505 [inline]
 ___slab_alloc+0x2fe/0x490 mm/slub.c:2667
 __slab_alloc+0x62/0xa0 mm/slub.c:2707
 slab_alloc_node mm/slub.c:2792 [inline]
 slab_alloc mm/slub.c:2837 [inline]
 __kmalloc_track_caller+0x16d/0x2b0 mm/slub.c:4449
 __kmalloc_reserve net/core/skbuff.c:142 [inline]
 __alloc_skb+0xb4/0x4d0 net/core/skbuff.c:210
 alloc_skb include/linux/skbuff.h:1080 [inline]
 nlmsg_new include/net/netlink.h:888 [inline]
 rtmsg_ifinfo_build_skb+0x81/0x180 net/core/rtnetlink.c:3528
 rtmsg_ifinfo_event net/core/rtnetlink.c:3564 [inline]
 rtmsg_ifinfo+0x71/0x120 net/core/rtnetlink.c:3573
 netdev_state_change+0x15a/0x1e0 net/core/dev.c:1275
 do_setlink+0x7a7/0x3b70 net/core/rtnetlink.c:2760
 rtnl_group_changelink net/core/rtnetlink.c:3032 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3193 [inline]
 rtnl_newlink+0x1141/0x2060 net/core/rtnetlink.c:3314
 rtnetlink_rcv_msg+0x983/0xc70 net/core/rtnetlink.c:5290
 netlink_rcv_skb+0x1d5/0x420 net/netlink/af_netlink.c:2467
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1176 [inline]
 __free_pages_ok+0x847/0x950 mm/page_alloc.c:1438
 free_the_page mm/page_alloc.c:4955 [inline]
 __free_pages+0x91/0x140 mm/page_alloc.c:4961
 __free_slab+0x221/0x2e0 mm/slub.c:1774
 free_slab mm/slub.c:1789 [inline]
 discard_slab mm/slub.c:1795 [inline]
 unfreeze_partials+0x14e/0x180 mm/slub.c:2288
 put_cpu_partial+0x44/0x180 mm/slub.c:2324
 __slab_free+0x297/0x360 mm/slub.c:2971
 qlist_free_all+0x43/0xb0 mm/kasan/quarantine.c:167
 quarantine_reduce+0x1d9/0x210 mm/kasan/quarantine.c:260
 __kasan_kmalloc+0x41/0x210 mm/kasan/common.c:507
 slab_post_alloc_hook mm/slab.h:584 [inline]
 slab_alloc_node mm/slub.c:2829 [inline]
 slab_alloc mm/slub.c:2837 [inline]
 kmem_cache_alloc+0xd9/0x250 mm/slub.c:2842
 kmem_cache_alloc_node include/linux/slab.h:427 [inline]
 __alloc_skb+0x7a/0x4d0 net/core/skbuff.c:198
 alloc_skb_fclone include/linux/skbuff.h:1130 [inline]
 sk_stream_alloc_skb+0x1f4/0xa70 net/ipv4/tcp.c:891
 tcp_sendmsg_locked+0xe07/0x3810 net/ipv4/tcp.c:1300
 tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1450
 sock_sendmsg_nosec net/socket.c:638 [inline]
 __sock_sendmsg net/socket.c:650 [inline]
 sock_write_iter+0x344/0x470 net/socket.c:1009
 call_write_iter include/linux/fs.h:1991 [inline]
 new_sync_write fs/read_write.c:483 [inline]
 __vfs_write+0x5d3/0x750 fs/read_write.c:496

Memory state around the buggy address:
 ffff8881d7574a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881d7574b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881d7574b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff8881d7574c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881d7574c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/04/11 20:33 android12-5.4 41adfeb3d639 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan KASAN: use-after-free Read in process_one_work
* Struck through repros no longer work on HEAD.