| Date | Name | Commit | Repro | Result |
|---|---|---|---|---|
| 2026/02/05 | lts (merge base) | e50b81c50fcb | C | [report] KASAN: slab-out-of-bounds Write in __bpf_get_stackid |
| 2026/02/05 | upstream (ToT) | f14faaf3a1fb | C | Didn't crash |
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| Date | Name | Commit | Repro | Result |
|---|---|---|---|---|
| 2026/02/05 | lts (merge base) | e50b81c50fcb | C | [report] KASAN: slab-out-of-bounds Write in __bpf_get_stackid |
| 2026/02/05 | upstream (ToT) | f14faaf3a1fb | C | Didn't crash |
| Kernel | Title | Rank 🛈 | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| linux-6.6 | KASAN: slab-out-of-bounds Write in __bpf_get_stackid origin:lts-only | 21 | C | error | 11 | 1d09h | 182d | 0/2 | upstream: reported C repro on 2025/08/11 20:18 | |
| linux-6.1 | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | 21 | C | 3 | 1d09h | 2d05h | 0/3 | upstream: reported C repro on 2026/02/08 05:29 | ||
| upstream | KASAN: slab-out-of-bounds Write in __bpf_get_stackid bpf | 21 | C | error | 170 | 101d | 196d | 29/29 | fixed on 2026/01/07 12:29 |
================================================================== BUG: KASAN: slab-out-of-bounds in __bpf_get_stackid+0x6fa/0x960 kernel/bpf/stackmap.c:274 Write of size 56 at addr ffff888110372690 by task syz.2.17/375 CPU: 1 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 Call Trace: <IRQ> __dump_stack+0x21/0x24 lib/dump_stack.c:88 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106 print_address_description+0x71/0x200 mm/kasan/report.c:316 print_report+0x4a/0x60 mm/kasan/report.c:420 kasan_report+0x122/0x150 mm/kasan/report.c:524 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189 memcpy+0x44/0x70 mm/kasan/shadow.c:66 __bpf_get_stackid+0x6fa/0x960 kernel/bpf/stackmap.c:274 ____bpf_get_stackid_pe kernel/bpf/stackmap.c:365 [inline] bpf_get_stackid_pe+0x2ee/0x400 kernel/bpf/stackmap.c:334 bpf_prog_fa73c8c086b491e8+0x21/0x31 bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline] __bpf_prog_run include/linux/filter.h:607 [inline] bpf_prog_run include/linux/filter.h:614 [inline] bpf_overflow_handler+0x3d0/0x5e0 kernel/events/core.c:10238 __perf_event_overflow+0x437/0x620 kernel/events/core.c:9448 perf_swevent_hrtimer+0x400/0x5b0 kernel/events/core.c:10879 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x3d5/0xa00 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x3c7/0x8c0 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline] __sysvec_apic_timer_interrupt+0x11e/0x440 arch/x86/kernel/apic/apic.c:1124 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1118 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:_perf_ioctl kernel/events/core.c:5778 [inline] RIP: 0010:perf_ioctl+0x147a/0x1e70 kernel/events/core.c:5837 Code: 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 40 02 00 00 0f 85 3e 09 00 00 4c 89 f8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <e8> 41 6a d7 ff 45 31 ff e9 6e ff ff ff e8 34 6a d7 ff 41 bf ea ff RSP: 0018:ffffc90000a67be0 EFLAGS: 00010246 RAX: ffffffff8199f62d RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88811362bcc0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000a67e80 R08: ffff888114a0c007 R09: 1ffff11022941800 R10: dffffc0000000000 R11: ffffed1022941801 R12: 0000000040042408 R13: dffffc0000000000 R14: fffff5200014cf8c R15: ffffc900007e5000 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7faf49f9aeb9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffff5c41af8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007faf4a215fa0 RCX: 00007faf49f9aeb9 RDX: 0000000000000004 RSI: 0000000040042408 RDI: 0000000000000005 RBP: 00007faf4a008c1f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007faf4a215fac R14: 00007faf4a215fa0 R15: 00007faf4a215fa0 </TASK> Allocated by task 375: kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:53 kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:380 [inline] __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389 kasan_kmalloc include/linux/kasan.h:212 [inline] __do_kmalloc_node mm/slab_common.c:938 [inline] __kmalloc_node+0xb2/0x1e0 mm/slab_common.c:945 kmalloc_node include/linux/slab.h:589 [inline] __bpf_map_area_alloc kernel/bpf/syscall.c:328 [inline] bpf_map_area_alloc+0x4b/0xe0 kernel/bpf/syscall.c:341 prealloc_elems_and_freelist+0x8a/0x1e0 kernel/bpf/stackmap.c:51 stack_map_alloc+0x3a7/0x530 kernel/bpf/stackmap.c:117 find_and_alloc_map kernel/bpf/syscall.c:133 [inline] map_create+0x49c/0xd80 kernel/bpf/syscall.c:1126 __sys_bpf+0x34e/0x850 kernel/bpf/syscall.c:4987 __do_sys_bpf kernel/bpf/syscall.c:5109 [inline] __se_sys_bpf kernel/bpf/syscall.c:5107 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5107 x64_sys_call+0x488/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 The buggy address belongs to the object at ffff888110372680 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 16 bytes inside of 64-byte region [ffff888110372680, ffff8881103726c0) The buggy address belongs to the physical page: page:ffffea000440dc80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x110372 flags: 0x4000000000000200(slab|zone=1) raw: 4000000000000200 0000000000000000 dead000000000122 ffff888100042780 raw: 0000000000000000 0000000000200020 00000001ffffffff 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 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 364, tgid 364 (syz-executor), ts 31188271111, free_ts 31092581716 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2643 prep_new_page+0x1c/0x110 mm/page_alloc.c:2650 get_page_from_freelist+0x2d12/0x2d80 mm/page_alloc.c:4554 __alloc_pages+0x1d9/0x480 mm/page_alloc.c:5868 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1 allocate_slab mm/slub.c:1967 [inline] new_slab+0x98/0x3d0 mm/slub.c:2020 ___slab_alloc+0x6bd/0xb20 mm/slub.c:3177 __slab_alloc+0x5e/0xa0 mm/slub.c:3263 slab_alloc_node mm/slub.c:3348 [inline] __kmem_cache_alloc_node+0x203/0x2c0 mm/slub.c:3423 kmalloc_trace+0x29/0xb0 mm/slab_common.c:1028 kmalloc include/linux/slab.h:563 [inline] call_modprobe kernel/kmod.c:79 [inline] __request_module+0x2a7/0x910 kernel/kmod.c:170 dev_load+0x5b/0xb0 net/core/dev_ioctl.c:449 dev_ioctl+0x3c6/0xd10 net/core/dev_ioctl.c:514 sock_do_ioctl+0x252/0x330 net/socket.c:1208 sock_ioctl+0x4ca/0x720 net/socket.c:1311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856 page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1551 [inline] free_pcp_prepare mm/page_alloc.c:1625 [inline] free_unref_page_prepare+0x742/0x750 mm/page_alloc.c:3589 free_unref_page+0x95/0x540 mm/page_alloc.c:3687 free_the_page mm/page_alloc.c:836 [inline] __free_pages+0x67/0x100 mm/page_alloc.c:5957 __free_slab+0xca/0x1a0 mm/slub.c:2044 free_slab mm/slub.c:2059 [inline] discard_slab mm/slub.c:2065 [inline] __unfreeze_partials+0x160/0x190 mm/slub.c:2614 put_cpu_partial+0xa9/0x100 mm/slub.c:2690 __slab_free+0x1c4/0x280 mm/slub.c:3589 do_slab_free mm/slub.c:3666 [inline] ___cache_free+0xbf/0xd0 mm/slub.c:3722 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0xc6/0x140 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x14a/0x170 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x24/0x80 mm/kasan/common.c:311 kasan_slab_alloc include/linux/kasan.h:202 [inline] slab_post_alloc_hook+0x4f/0x2d0 mm/slab.h:768 slab_alloc_node mm/slub.c:3382 [inline] __kmem_cache_alloc_node+0x192/0x2c0 mm/slub.c:3423 __do_kmalloc_node mm/slab_common.c:937 [inline] __kmalloc_node+0xa1/0x1e0 mm/slab_common.c:945 kmalloc_node include/linux/slab.h:589 [inline] kvmalloc_node+0x28a/0x460 mm/util.c:592 kvmalloc include/linux/slab.h:716 [inline] kvzalloc include/linux/slab.h:724 [inline] bucket_table_alloc lib/rhashtable.c:184 [inline] rhashtable_rehash_alloc lib/rhashtable.c:360 [inline] rht_deferred_worker+0x2e8/0x14e0 lib/rhashtable.c:420 Memory state around the buggy address: ffff888110372580: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff888110372600: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff888110372680: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc ^ ffff888110372700: 00 00 00 00 00 00 00 03 fc fc fc fc fc fc fc fc ffff888110372780: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ================================================================== ---------------- Code disassembly (best guess): 0: 00 65 48 add %ah,0x48(%rbp) 3: 8b 04 25 28 00 00 00 mov 0x28,%eax a: 48 3b 84 24 40 02 00 cmp 0x240(%rsp),%rax 11: 00 12: 0f 85 3e 09 00 00 jne 0x956 18: 4c 89 f8 mov %r15,%rax 1b: 48 8d 65 d8 lea -0x28(%rbp),%rsp 1f: 5b pop %rbx 20: 41 5c pop %r12 22: 41 5d pop %r13 24: 41 5e pop %r14 26: 41 5f pop %r15 28: 5d pop %rbp 29: c3 ret * 2a: e8 41 6a d7 ff call 0xffd76a70 <-- trapping instruction 2f: 45 31 ff xor %r15d,%r15d 32: e9 6e ff ff ff jmp 0xffffffa5 37: e8 34 6a d7 ff call 0xffd76a70 3c: 41 rex.B 3d: bf .byte 0xbf 3e: ea (bad) 3f: ff .byte 0xff
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026/02/08 03:47 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | |
| 2026/02/05 01:30 | android14-6.1 | 775f23d50ca8 | ea10c935 | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | |
| 2026/02/05 00:50 | android14-6.1 | 775f23d50ca8 | ea10c935 | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | |
| 2026/02/05 00:08 | android14-6.1 | 775f23d50ca8 | ea10c935 | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | |
| 2026/02/10 09:53 | android14-6.1 | c9e2710a7bd0 | 4ab09a02 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/10 07:47 | android14-6.1 | c9e2710a7bd0 | 4ab09a02 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/10 04:13 | android14-6.1 | c9e2710a7bd0 | 4ab09a02 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/09 17:02 | android14-6.1 | c9e2710a7bd0 | df949cd9 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/09 10:09 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/09 05:00 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/09 04:24 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/09 03:37 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/09 01:51 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/09 01:51 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/09 01:51 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/09 01:14 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/08 20:55 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/08 17:23 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/08 11:48 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/08 10:06 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/08 02:25 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/08 01:13 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/07 22:07 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/07 21:36 | android14-6.1 | c9e2710a7bd0 | 4c131dc4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/07 14:02 | android14-6.1 | c9e2710a7bd0 | f20fc9f9 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/07 06:08 | android14-6.1 | c9e2710a7bd0 | f20fc9f9 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid | ||
| 2026/02/04 23:25 | android14-6.1 | 775f23d50ca8 | ea10c935 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | KASAN: slab-out-of-bounds Write in __bpf_get_stackid |