| Title | Replies (including bot) | Last reply |
|---|---|---|
| [syzbot] [kernel?] general protection fault in __cpa_flush_tlb | 1 (3) | 2025/07/03 08:45 |
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| Title | Replies (including bot) | Last reply |
|---|---|---|
| [syzbot] [kernel?] general protection fault in __cpa_flush_tlb | 1 (3) | 2025/07/03 08:45 |
| Created | Duration | User | Patch | Repo | Result |
|---|---|---|---|---|---|
| 2025/07/03 01:02 | 35m | hdanton@sina.com | patch | linux-next | OK log |
================================================================== BUG: KASAN: out-of-bounds in __cpa_flush_tlb+0x46/0x270 arch/x86/mm/pat/set_memory.c:407 Read of size 8 at addr ffffc90003397920 by task syz-executor/5960 CPU: 0 UID: 0 PID: 5960 Comm: syz-executor Not tainted 6.16.0-rc4-next-20250630-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: <IRQ> dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xd2/0x2b0 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 __cpa_flush_tlb+0x46/0x270 arch/x86/mm/pat/set_memory.c:407 csd_do_func kernel/smp.c:134 [inline] __flush_smp_call_function_queue+0x370/0xaa0 kernel/smp.c:540 __sysvec_call_function_single+0xa8/0x3d0 arch/x86/kernel/smp.c:271 instr_sysvec_call_function_single arch/x86/kernel/smp.c:266 [inline] sysvec_call_function_single+0x9e/0xc0 arch/x86/kernel/smp.c:266 </IRQ> <TASK> asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709 RIP: 0010:finish_task_switch+0x26b/0x950 kernel/sched/core.c:5181 Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 e9 27 05 00 00 4c 8b 75 d0 4c 89 e7 e8 2f db e0 09 e8 3a 0e 36 00 fb 4c 8b 65 c0 <49> 8d bc 24 18 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 RSP: 0018:ffffc9000453f5f8 EFLAGS: 00000282 RAX: 312751dada94af00 RBX: 0000000000000000 RCX: 312751dada94af00 RDX: 0000000000000000 RSI: ffffffff8d992cd0 RDI: ffffffff8be31d00 RBP: ffffc9000453f650 R08: ffffffff8fa17437 R09: 1ffffffff1f42e86 R10: dffffc0000000000 R11: fffffbfff1f42e87 R12: ffff888021ed9e00 R13: dffffc0000000000 R14: ffff888023f2da00 R15: ffff8880b863ab18 context_switch kernel/sched/core.c:5316 [inline] __schedule+0x16fd/0x4d00 kernel/sched/core.c:6696 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6876 preempt_schedule+0xae/0xc0 kernel/sched/core.c:6900 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12 idr_preload_end+0x126/0x200 include/linux/idr.h:191 alloc_pid+0x35c/0xab0 kernel/pid.c:241 copy_process+0x198e/0x3c00 kernel/fork.c:2184 kernel_clone+0x21e/0x870 kernel/fork.c:2598 __do_sys_clone kernel/fork.c:2741 [inline] __se_sys_clone kernel/fork.c:2725 [inline] __x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2725 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd22b785193 Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00 RSP: 002b:00007fff68c51808 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd22b785193 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 00005555595c77d0 R11: 0000000000000246 R12: 0000000000000000 R13: 00000000000927c0 R14: 00000000000295d0 R15: 00007fff68c519a0 </TASK> The buggy address belongs to the virtual mapping at [ffffc90003390000, ffffc90003399000) created by: copy_process+0x54b/0x3c00 kernel/fork.c:1998 The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x76b10 memcg:ffff88807849f502 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000004 0000000000000000 00000001ffffffff ffff88807849f502 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_ZERO|__GFP_NOWARN), pid 10519, tgid 10519 (syz.1.2188), ts 169318727845, free_ts 167753086937 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1848 prep_new_page mm/page_alloc.c:1856 [inline] get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3855 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5145 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419 alloc_frozen_pages_noprof mm/mempolicy.c:2490 [inline] alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2510 vm_area_alloc_pages mm/vmalloc.c:3642 [inline] __vmalloc_area_node mm/vmalloc.c:3720 [inline] __vmalloc_node_range_noprof+0x97d/0x12f0 mm/vmalloc.c:3893 __vmalloc_node_noprof+0xc2/0x110 mm/vmalloc.c:3956 alloc_thread_stack_node kernel/fork.c:310 [inline] dup_task_struct+0x3e7/0x860 kernel/fork.c:876 copy_process+0x54b/0x3c00 kernel/fork.c:1998 kernel_clone+0x21e/0x870 kernel/fork.c:2598 __do_sys_clone3 kernel/fork.c:2902 [inline] __se_sys_clone3+0x256/0x2d0 kernel/fork.c:2881 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 49 tgid 49 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1392 [inline] __free_frozen_pages+0xb80/0xd80 mm/page_alloc.c:2892 pagetable_free include/linux/mm.h:2896 [inline] pagetable_dtor_free include/linux/mm.h:2994 [inline] __tlb_remove_table+0x2d2/0x3b0 include/asm-generic/tlb.h:220 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2582 [inline] rcu_core+0xca8/0x1710 kernel/rcu/tree.c:2838 handle_softirqs+0x286/0x870 kernel/softirq.c:579 do_softirq+0xec/0x180 kernel/softirq.c:480 __local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:407 spin_unlock_bh include/linux/spinlock.h:396 [inline] batadv_nc_purge_paths+0x318/0x3b0 net/batman-adv/network-coding.c:471 batadv_nc_worker+0x369/0x610 net/batman-adv/network-coding.c:722 process_one_work kernel/workqueue.c:3239 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3322 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3403 kthread+0x70e/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Memory state around the buggy address: ffffc90003397800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90003397880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffc90003397900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffffc90003397980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90003397a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== ---------------- Code disassembly (best guess): 0: 0f 84 3c 01 00 00 je 0x142 6: 48 85 db test %rbx,%rbx 9: 0f 85 63 01 00 00 jne 0x172 f: e9 27 05 00 00 jmp 0x53b 14: 4c 8b 75 d0 mov -0x30(%rbp),%r14 18: 4c 89 e7 mov %r12,%rdi 1b: e8 2f db e0 09 call 0x9e0db4f 20: e8 3a 0e 36 00 call 0x360e5f 25: fb sti 26: 4c 8b 65 c0 mov -0x40(%rbp),%r12 * 2a: 49 8d bc 24 18 16 00 lea 0x1618(%r12),%rdi <-- trapping instruction 31: 00 32: 48 89 f8 mov %rdi,%rax 35: 48 c1 e8 03 shr $0x3,%rax 39: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax 3e: 84 c0 test %al,%al
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025/07/01 15:31 | linux-next | 1343433ed389 | 6e83b42d | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: out-of-bounds Read in __cpa_flush_tlb | ||
| 2025/07/01 06:19 | linux-next | 1343433ed389 | 6e83b42d | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: out-of-bounds Read in __cpa_flush_tlb | ||
| 2025/06/30 18:09 | linux-next | 1343433ed389 | fc9d8ee5 | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: out-of-bounds Read in __cpa_flush_tlb | ||
| 2025/07/01 22:08 | linux-next | 1343433ed389 | ffe4b334 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | general protection fault in __cpa_flush_tlb | ||
| 2025/06/30 09:17 | linux-next | 1343433ed389 | fc9d8ee5 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | general protection fault in __cpa_flush_tlb | ||
| 2025/07/03 05:59 | linux-next | 50c8770a42fa | 0cd59a8f | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: slab-out-of-bounds Read in __cpa_flush_tlb | ||
| 2025/07/02 15:49 | linux-next | 50c8770a42fa | 0cd59a8f | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: out-of-bounds Read in __cpa_flush_tlb | ||
| 2025/07/02 14:36 | linux-next | 50c8770a42fa | 0cd59a8f | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: stack-out-of-bounds Read in __cpa_flush_tlb | ||
| 2025/07/02 09:16 | linux-next | 1343433ed389 | ffe4b334 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: out-of-bounds Read in __cpa_flush_tlb | ||
| 2025/07/01 20:57 | linux-next | 1343433ed389 | ffe4b334 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: stack-out-of-bounds Read in __cpa_flush_tlb | ||
| 2025/07/01 12:53 | linux-next | 1343433ed389 | 6e83b42d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: out-of-bounds Read in __cpa_flush_tlb | ||
| 2025/07/01 10:52 | linux-next | 1343433ed389 | 6e83b42d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: out-of-bounds Read in __cpa_flush_tlb | ||
| 2025/07/01 10:52 | linux-next | 1343433ed389 | 6e83b42d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: out-of-bounds Read in __cpa_flush_tlb | ||
| 2025/06/30 22:53 | linux-next | 1343433ed389 | 6e83b42d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: out-of-bounds Read in __cpa_flush_tlb | ||
| 2025/06/30 10:58 | linux-next | 1343433ed389 | fc9d8ee5 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: out-of-bounds Read in __cpa_flush_tlb | ||
| 2025/06/30 10:57 | linux-next | 1343433ed389 | fc9d8ee5 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | KASAN: out-of-bounds Read in __cpa_flush_tlb |