Title | Replies (including bot) | Last reply |
---|---|---|
[syzbot] [net?] KASAN: use-after-free Read in __linkwatch_run_queue | 0 (2) | 2025/06/10 05:34 |
syzbot |
sign-in | mailing list | source | docs |
Title | Replies (including bot) | Last reply |
---|---|---|
[syzbot] [net?] KASAN: use-after-free Read in __linkwatch_run_queue | 0 (2) | 2025/06/10 05:34 |
================================================================== BUG: KASAN: slab-use-after-free in __linkwatch_run_queue+0x180/0x2b8 net/core/link_watch.c:244 Read at addr faf00000113fca2d by task kworker/u8:2/40 Pointer tag: [fa], memory tag: [fe] CPU: 0 UID: 0 PID: 40 Comm: kworker/u8:2 Not tainted 6.16.0-rc1-syzkaller #0 PREEMPT Hardware name: linux,dummy-virt (DT) Workqueue: events_unbound linkwatch_event Call trace: show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x78/0x90 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0x108/0x630 mm/kasan/report.c:521 kasan_report+0x88/0xac mm/kasan/report.c:634 report_tag_fault arch/arm64/mm/fault.c:332 [inline] do_tag_recovery arch/arm64/mm/fault.c:344 [inline] __do_kernel_fault+0x170/0x1c8 arch/arm64/mm/fault.c:386 do_bad_area arch/arm64/mm/fault.c:486 [inline] do_tag_check_fault+0x78/0x8c arch/arm64/mm/fault.c:843 do_mem_abort+0x44/0x94 arch/arm64/mm/fault.c:919 el1_abort+0x40/0x60 arch/arm64/kernel/entry-common.c:455 el1h_64_sync_handler+0xa4/0x120 arch/arm64/kernel/entry-common.c:533 el1h_64_sync+0x6c/0x70 arch/arm64/kernel/entry.S:595 __linkwatch_run_queue+0x180/0x2b8 net/core/link_watch.c:244 (P) linkwatch_event+0x30/0x40 net/core/link_watch.c:304 process_one_work+0x178/0x2cc kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x250/0x358 kernel/workqueue.c:3402 kthread+0x130/0x1fc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 Freed by task 12: kasan_save_stack+0x3c/0x64 mm/kasan/common.c:47 save_stack_info+0x40/0x158 mm/kasan/tags.c:106 kasan_save_free_info+0x18/0x24 mm/kasan/tags.c:147 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x74/0x8c mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kfree+0xfc/0x30c mm/slub.c:4842 kvfree+0x3c/0x4c mm/slub.c:5058 netdev_release+0x30/0x44 net/core/net-sysfs.c:2231 device_release+0x34/0x90 drivers/base/core.c:2568 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0xa4/0x114 lib/kobject.c:737 netdev_run_todo+0x1f0/0x5a0 net/core/dev.c:11412 rtnl_unlock+0x10/0x1c net/core/rtnetlink.c:157 default_device_exit_batch+0x320/0x394 net/core/dev.c:12645 ops_exit_list net/core/net_namespace.c:206 [inline] ops_undo_list+0x10c/0x23c net/core/net_namespace.c:253 cleanup_net+0x1f8/0x3d0 net/core/net_namespace.c:686 process_one_work+0x178/0x2cc kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x250/0x358 kernel/workqueue.c:3402 kthread+0x130/0x1fc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 The buggy address belongs to the object at fff00000113fc000 which belongs to the cache kmalloc-cg-4k of size 4096 The buggy address is located 2605 bytes inside of 4096-byte region [fff00000113fc000, fff00000113fd000) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xfaf00000113fc000 pfn:0x513f8 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:fdf000001128ff81 flags: 0x1ffc00000000240(workingset|head|node=0|zone=0|lastcpupid=0x7ff|kasantag=0x0) page_type: f5(slab) raw: 01ffc00000000240 fdf0000003008000 ffffc1ffc0488e10 ffffc1ffc044f810 raw: faf00000113fc000 0000000000080004 00000000f5000000 fdf000001128ff81 head: 01ffc00000000240 fdf0000003008000 ffffc1ffc0488e10 ffffc1ffc044f810 head: faf00000113fc000 0000000000080004 00000000f5000000 fdf000001128ff81 head: 01ffc00000000003 ffffc1ffc044fe01 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected Memory state around the buggy address: fff00000113fc800: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fff00000113fc900: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe >fff00000113fca00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe ^ fff00000113fcb00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fff00000113fcc00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/06/10 05:34 | upstream | 19272b37aa4f | 4826c28e | .config | console log | report | syz / log | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-qemu2-arm64-mte | KASAN: slab-use-after-free Read in __linkwatch_run_queue | ||
2025/06/16 13:11 | upstream | e04c78d86a96 | 5f4b362d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-smack-root | KASAN: use-after-free Read in __linkwatch_run_queue | ||
2025/05/28 20:39 | upstream | feacb1774bd5 | 3d2f584d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-badwrites-root | KASAN: use-after-free Read in __linkwatch_run_queue | ||
2025/05/23 21:20 | upstream | eccf6f2f6ab9 | f8cc0c83 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-smack-root | KASAN: use-after-free Read in __linkwatch_run_queue | ||
2025/05/20 01:37 | upstream | a5806cd506af | 8f9cf946 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-smack-root | KASAN: use-after-free Read in __linkwatch_run_queue | ||
2025/05/14 17:17 | upstream | 9f35e33144ae | a4fa04ef | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | KASAN: use-after-free Read in __linkwatch_run_queue | ||
2025/05/12 19:06 | upstream | 627277ba7c23 | f6671af7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-fs | KASAN: use-after-free Read in __linkwatch_run_queue | ||
2025/05/02 09:52 | upstream | ebd297a2affa | 51b137cd | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | KASAN: use-after-free Read in __linkwatch_run_queue | ||
2025/04/30 12:45 | upstream | 8bac8898fe39 | 85a5a23f | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-smack-root | KASAN: use-after-free Read in __linkwatch_run_queue | ||
2025/05/20 23:46 | upstream | b36ddb9210e6 | 8f9cf946 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-386 | KASAN: use-after-free Read in __linkwatch_run_queue | ||
2025/06/10 16:50 | net | fdd9ebccfc32 | 5d7e17ca | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | KASAN: use-after-free Read in __linkwatch_run_queue | ||
2025/06/10 02:16 | upstream | 19272b37aa4f | 4826c28e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | KASAN: slab-use-after-free Read in __linkwatch_run_queue | ||
2025/05/07 21:22 | upstream | 707df3375124 | 350f4ffc | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-badwrites-root | KASAN: slab-use-after-free Read in __linkwatch_run_queue | ||
2025/06/11 14:29 | upstream | aef17cb3d3c4 | 5d7e17ca | .config | console log | report | info | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-qemu2-arm64-mte | KASAN: slab-use-after-free Read in __linkwatch_run_queue | ||
2025/06/02 13:25 | upstream | cd2e103d57e5 | aaaaf5ea | .config | console log | report | info | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-qemu2-arm64-mte | KASAN: invalid-access Read in __linkwatch_run_queue | ||
2025/06/17 18:15 | net-next | 3b5b1c428260 | 417d98fa | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | KASAN: slab-use-after-free Read in __linkwatch_run_queue | ||
2025/06/13 16:12 | bpf-next | af91af33c168 | 98683f8f | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-bpf-next-kasan-gce | KASAN: slab-use-after-free Read in __linkwatch_run_queue | ||
2025/05/23 02:21 | net-next | ea15e046263b | fa44301a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | KASAN: slab-use-after-free Read in __linkwatch_run_queue |