Hello, syzbot found the following issue on: HEAD commit: 274052a2b0ab Merge branch 'bpf-allocator' git tree: bpf-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=11a26bcd080000 kernel config: https://syzkaller.appspot.com/x/.config?x=924833c12349a8c0 dashboard link: https://syzkaller.appspot.com/bug?extid=5d1da78b375c3b5e6c2b compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=114109f5080000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11b3b56d080000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/be8eff3df48b/disk-274052a2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/cd3150e84ddd/vmlinux-274052a2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5d1da78b375c3b5e6c2b@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: percpu_counter hint: 0x0 WARNING: CPU: 0 PID: 3624 at lib/debugobjects.c:502 debug_print_object+0x16e/0x250 lib/debugobjects.c:502 Modules linked in: CPU: 0 PID: 3624 Comm: syz-executor257 Not tainted 5.19.0-syzkaller-14117-g274052a2b0ab #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:502 Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 60 0c 49 8a 4c 89 ee 48 c7 c7 00 00 49 8a e8 df f1 38 05 <0f> 0b 83 05 65 86 dd 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc90003edfa90 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: ffff8880773cbb00 RSI: ffffffff8161f148 RDI: fffff520007dbf44 RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000000 R12: ffffffff8a4b90c0 R13: ffffffff8a490520 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f0136485700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200004c0 CR3: 0000000072b25000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __debug_check_no_obj_freed lib/debugobjects.c:989 [inline] debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1020 slab_free_hook mm/slub.c:1729 [inline] slab_free_freelist_hook+0xeb/0x1c0 mm/slub.c:1780 slab_free mm/slub.c:3534 [inline] kfree+0xe2/0x580 mm/slub.c:4562 kvfree+0x42/0x50 mm/util.c:655 htab_map_alloc+0xc76/0x1620 kernel/bpf/hashtab.c:632 find_and_alloc_map kernel/bpf/syscall.c:131 [inline] map_create kernel/bpf/syscall.c:1105 [inline] __sys_bpf+0xa82/0x5f80 kernel/bpf/syscall.c:4938 __do_sys_bpf kernel/bpf/syscall.c:5060 [inline] __se_sys_bpf kernel/bpf/syscall.c:5058 [inline] __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:5058 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f01364d3919 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0136485318 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f013655b3e8 RCX: 00007f01364d3919 RDX: 0000000000000048 RSI: 00000000200004c0 RDI: 0000000000000000 RBP: 00007f013655b3e0 R08: 00007f0136485700 R09: 0000000000000000 R10: 00007f0136485700 R11: 0000000000000246 R12: 00007f013655b3ec R13: 00007ffee9a220af R14: 00007f0136485400 R15: 0000000000022000 </TASK> irq event stamp: 19441 hardirqs last enabled at (19445): [<ffffffff816188e8>] __down_trylock_console_sem+0x108/0x120 kernel/printk/printk.c:247 hardirqs last disabled at (19448): [<ffffffff816188ca>] __down_trylock_console_sem+0xea/0x120 kernel/printk/printk.c:245 softirqs last enabled at (19350): [<ffffffff814914c3>] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (19350): [<ffffffff814914c3>] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 softirqs last disabled at (19341): [<ffffffff814914c3>] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (19341): [<ffffffff814914c3>] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 ---[ end trace 0000000000000000 ]--- --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
