| Title | Replies (including bot) | Last reply |
|---|---|---|
| [syzbot] Monthly trace report (Feb 2026) | 0 (1) | 2026/02/23 08:39 |
| [syzbot] [trace?] [bpf?] KASAN: slab-use-after-free Read in bpf_trace_run2 (3) | 0 (7) | 2026/02/21 23:34 |
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| Title | Replies (including bot) | Last reply |
|---|---|---|
| [syzbot] Monthly trace report (Feb 2026) | 0 (1) | 2026/02/23 08:39 |
| [syzbot] [trace?] [bpf?] KASAN: slab-use-after-free Read in bpf_trace_run2 (3) | 0 (7) | 2026/02/21 23:34 |
| Kernel | Title | Rank 🛈 | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| upstream | KASAN: slab-use-after-free Read in bpf_trace_run2 bpf trace | 19 | C | error | 653 | 697d | 715d | 25/29 | fixed on 2024/05/22 23:16 | |
| upstream | KASAN: slab-use-after-free Read in bpf_trace_run2 (2) bpf trace | 19 | syz | error | 123 | 487d | 504d | 28/29 | fixed on 2025/05/06 15:33 | |
| android-54 | BUG: unable to handle kernel paging request in bpf_trace_run2 | 8 | C | 4 | 1836d | 1991d | 0/2 | auto-obsoleted due to no activity on 2023/04/17 21:30 | ||
| upstream | KASAN: vmalloc-out-of-bounds Read in bpf_trace_run2 trace bpf | 17 | C | done | done | 5 | 1834d | 1992d | 20/29 | fixed on 2021/04/13 19:14 |
| Created | Duration | User | Patch | Repo | Result |
|---|---|---|---|---|---|
| 2026/02/21 23:34 | 15m | kartikey406@gmail.com | patch | upstream | log |
| 2026/02/21 12:07 | 16m | kartikey406@gmail.com | patch | upstream | log |
| 2026/02/21 10:45 | 15m | kartikey406@gmail.com | patch | upstream | log |
| 2026/02/21 06:41 | 15m | kartikey406@gmail.com | patch | upstream | log |
| 2026/02/21 05:41 | 15m | kartikey406@gmail.com | patch | upstream | log |
| 2026/02/21 05:19 | 16m | kartikey406@gmail.com | patch | upstream | log |
================================================================== BUG: KASAN: slab-use-after-free in __bpf_trace_run kernel/trace/bpf_trace.c:2085 [inline] BUG: KASAN: slab-use-after-free in bpf_trace_run2+0x2c4/0x840 kernel/trace/bpf_trace.c:2129 Read of size 8 at addr ffff888059440880 by task kworker/u4:2/30 CPU: 0 UID: 0 PID: 30 Comm: kworker/u4:2 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: bat_events batadv_mcast_mla_update Call Trace: <TASK> dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xba/0x230 mm/kasan/report.c:482 kasan_report+0x117/0x150 mm/kasan/report.c:595 __bpf_trace_run kernel/trace/bpf_trace.c:2085 [inline] bpf_trace_run2+0x2c4/0x840 kernel/trace/bpf_trace.c:2129 __do_trace_kfree include/trace/events/kmem.h:97 [inline] trace_kfree include/trace/events/kmem.h:97 [inline] kfree+0x5b2/0x630 mm/slub.c:6447 batadv_mcast_mla_list_free net/batman-adv/multicast.c:667 [inline] __batadv_mcast_mla_update net/batman-adv/multicast.c:924 [inline] batadv_mcast_mla_update+0x3380/0x3740 net/batman-adv/multicast.c:946 process_one_work kernel/workqueue.c:3275 [inline] process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439 kthread+0x388/0x470 kernel/kthread.c:467 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK> Allocated by task 7677: kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 poison_kmalloc_redzone mm/kasan/common.c:398 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:415 kasan_kmalloc include/linux/kasan.h:263 [inline] __kmalloc_cache_noprof+0x31c/0x660 mm/slub.c:5358 kmalloc_noprof include/linux/slab.h:950 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] bpf_raw_tp_link_attach+0x278/0x700 kernel/bpf/syscall.c:4264 bpf_raw_tracepoint_open+0x1b2/0x220 kernel/bpf/syscall.c:4312 __sys_bpf+0x846/0x950 kernel/bpf/syscall.c:6270 __do_sys_bpf kernel/bpf/syscall.c:6341 [inline] __se_sys_bpf kernel/bpf/syscall.c:6339 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6339 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 1049: kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:253 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2692 [inline] slab_free mm/slub.c:6143 [inline] kfree+0x1c1/0x630 mm/slub.c:6461 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 do_softirq+0x76/0xd0 kernel/softirq.c:523 __local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450 local_bh_enable include/linux/bottom_half.h:33 [inline] __alloc_skb+0x1aa/0x7d0 net/core/skbuff.c:697 alloc_skb include/linux/skbuff.h:1383 [inline] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:819 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:876 [inline] nsim_dev_trap_report_work+0x29a/0xb80 drivers/net/netdevsim/dev.c:922 process_one_work kernel/workqueue.c:3275 [inline] process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439 kthread+0x388/0x470 kernel/kthread.c:467 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Last potentially related work creation: kasan_save_stack+0x3e/0x60 mm/kasan/common.c:57 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:556 __call_rcu_common kernel/rcu/tree.c:3131 [inline] call_rcu+0xee/0x890 kernel/rcu/tree.c:3251 bpf_link_put_direct kernel/bpf/syscall.c:3323 [inline] bpf_link_release+0x6b/0x80 kernel/bpf/syscall.c:3330 __fput+0x44f/0xa70 fs/file_table.c:469 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888059440800 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 128 bytes inside of freed 192-byte region [ffff888059440800, ffff8880594408c0) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x59440 flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000000 ffff88801ac413c0 dead000000000100 dead000000000122 raw: 0000000000000000 0000000800100010 00000000f5000000 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 0x1d2cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 6361, tgid 6360 (syz.5.357), ts 150596059693, free_ts 150584593785 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 alloc_slab_page mm/slub.c:3269 [inline] allocate_slab+0x77/0x660 mm/slub.c:3458 new_slab mm/slub.c:3516 [inline] refill_objects+0x331/0x3c0 mm/slub.c:7153 refill_sheaf mm/slub.c:2818 [inline] __pcs_replace_empty_main+0x2b9/0x620 mm/slub.c:4592 alloc_from_pcs mm/slub.c:4695 [inline] slab_alloc_node mm/slub.c:4829 [inline] __kmalloc_cache_noprof+0x392/0x660 mm/slub.c:5353 kmalloc_noprof include/linux/slab.h:950 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] bpf_raw_tp_link_attach+0x278/0x700 kernel/bpf/syscall.c:4264 bpf_raw_tracepoint_open+0x1b2/0x220 kernel/bpf/syscall.c:4312 __sys_bpf+0x846/0x950 kernel/bpf/syscall.c:6270 __do_sys_bpf kernel/bpf/syscall.c:6341 [inline] __se_sys_bpf kernel/bpf/syscall.c:6339 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6339 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:467 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Memory state around the buggy address: ffff888059440780: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff888059440800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888059440880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ^ ffff888059440900: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888059440980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026/03/04 16:16 | upstream | 0031c06807cf | e6b6b96b | .config | console log | report | syz / log | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | ||
| 2026/02/20 11:34 | upstream | 8bf22c33e7a1 | 17d780d6 | .config | console log | report | syz / log | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | ||
| 2026/03/06 17:16 | upstream | 5ee8dbf54602 | 41d8037d | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/03/04 13:58 | upstream | 0031c06807cf | e6b6b96b | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/03/03 02:44 | upstream | af4e9ef3d784 | 28b83e23 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/03/01 20:05 | upstream | eb71ab2bf722 | 43249bac | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/03/01 09:48 | upstream | eb71ab2bf722 | 43249bac | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/28 11:18 | upstream | 4d349ee5c778 | 43249bac | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/28 01:48 | upstream | a75cb869a8cc | 2cf092b8 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/27 00:20 | upstream | 3f4a08e64442 | a2f13f71 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/27 00:14 | upstream | 3f4a08e64442 | a2f13f71 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/26 23:47 | upstream | 3f4a08e64442 | a2f13f71 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/26 01:49 | upstream | d9d32e5bd5a4 | e0f78d93 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/25 19:10 | upstream | 7dff99b35460 | c162cde9 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/25 13:23 | upstream | 7dff99b35460 | c162cde9 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/25 05:45 | upstream | 7dff99b35460 | 787dfb7c | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/24 10:54 | upstream | 7dff99b35460 | 96b1aa46 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/22 21:17 | upstream | 189f164e573e | 6e7b5511 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/22 11:27 | upstream | 32a92f8c8932 | 6e7b5511 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/22 10:09 | upstream | 32a92f8c8932 | 6e7b5511 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/20 18:22 | upstream | 8bf22c33e7a1 | 741f5161 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/20 10:17 | upstream | 8bf22c33e7a1 | 17d780d6 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/19 12:17 | upstream | 956b9cbd7f15 | 746545b8 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/18 14:03 | upstream | 2961f841b025 | 39751c21 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/16 13:40 | upstream | 0f2acd3148e0 | 1e62d198 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/15 07:44 | upstream | 3e48a11675c5 | 1e62d198 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/14 16:27 | upstream | 770aaedb461a | 1e62d198 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/02/14 14:04 | upstream | 770aaedb461a | 1e62d198 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: slab-use-after-free Read in bpf_trace_run2 | |||
| 2026/03/06 01:24 | upstream | 5ee8dbf54602 | 31e9c887 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: vmalloc-out-of-bounds Read in bpf_trace_run2 | |||
| 2026/03/03 15:32 | upstream | af4e9ef3d784 | 4180d919 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: vmalloc-out-of-bounds Read in bpf_trace_run2 | |||
| 2026/03/02 06:57 | upstream | 39c633261414 | 43249bac | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: vmalloc-out-of-bounds Read in bpf_trace_run2 | |||
| 2026/02/25 19:03 | upstream | 7dff99b35460 | c162cde9 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: vmalloc-out-of-bounds Read in bpf_trace_run2 | |||
| 2026/02/23 15:38 | upstream | 6de23f81a5e0 | 7c9658af | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: vmalloc-out-of-bounds Read in bpf_trace_run2 | |||
| 2026/02/18 19:36 | upstream | 2961f841b025 | 77d4d919 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: vmalloc-out-of-bounds Read in bpf_trace_run2 | |||
| 2026/02/17 23:13 | upstream | d295082ea672 | f4288eed | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: vmalloc-out-of-bounds Read in bpf_trace_run2 | |||
| 2026/02/16 00:52 | upstream | 26a4cfaff82a | 1e62d198 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: vmalloc-out-of-bounds Read in bpf_trace_run2 | |||
| 2026/02/15 16:01 | upstream | ca4ee40bf13d | 1e62d198 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: vmalloc-out-of-bounds Read in bpf_trace_run2 |