------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: hrtimer hint: isotp_rx_timer_handler+0x0/0x170 include/linux/list.h:71 WARNING: CPU: 0 PID: 15924 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Modules linked in: CPU: 0 PID: 15924 Comm: systemd-udevd Not tainted 5.13.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd a0 2b c3 89 4c 89 ee 48 c7 c7 a0 1f c3 89 e8 12 81 02 05 <0f> 0b 83 05 05 67 f4 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc90000007c58 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: ffff888068335580 RSI: ffffffff815e45a5 RDI: fffff52000000f7d RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815de40e R11: 0000000000000000 R12: ffffffff896dc940 R13: ffffffff89c325e0 R14: ffffffff8165ec90 R15: dffffc0000000000 FS: 00007f1cbc3a38c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000541198 CR3: 000000001ae19000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:987 [inline] debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1018 free_pages_prepare mm/page_alloc.c:1304 [inline] __free_pages_ok+0x251/0xcd0 mm/page_alloc.c:1580 sk_prot_free net/core/sock.c:1747 [inline] __sk_destruct+0x6c6/0x900 net/core/sock.c:1832 sk_destruct+0xbd/0xe0 net/core/sock.c:1847 __sk_free+0xef/0x3d0 net/core/sock.c:1858 sk_free+0x78/0xa0 net/core/sock.c:1869 sock_put include/net/sock.h:1813 [inline] can_rx_delete_receiver+0xbd/0xf0 net/can/af_can.c:497 rcu_do_batch kernel/rcu/tree.c:2558 [inline] rcu_core+0x7ab/0x1380 kernel/rcu/tree.c:2793 __do_softirq+0x29b/0x9bd kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:197 Code: 01 f0 4d 89 03 e9 63 fd ff ff b9 ff ff ff ff ba 08 00 00 00 4d 8b 03 48 0f bd ca 49 8b 45 00 48 63 c9 e9 64 ff ff ff 0f 1f 00 <65> 8b 05 79 ac 8b 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc900041e77b8 EFLAGS: 00000202 RAX: ffffffff81827f20 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffff888068335580 RDI: 0000000000000003 RBP: 00007f1cbb2170ba R08: 0000000000000000 R09: ffffffff90235967 R10: ffffffff81827f66 R11: 0000000000084087 R12: ffffc900041e78d8 R13: 0000000000000000 R14: ffff888068335580 R15: 0000000000000000 rcu_read_lock include/linux/rcupdate.h:658 [inline] is_bpf_text_address+0x50/0x160 kernel/bpf/core.c:704 kernel_text_address kernel/extable.c:151 [inline] kernel_text_address+0xbd/0xf0 kernel/extable.c:120 __kernel_text_address+0x9/0x30 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline] unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313 arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:357 ____kasan_slab_free mm/kasan/common.c:360 [inline] ____kasan_slab_free mm/kasan/common.c:325 [inline] __kasan_slab_free+0xfb/0x130 mm/kasan/common.c:368 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1583 [inline] slab_free_freelist_hook+0xdf/0x240 mm/slub.c:1608 slab_free mm/slub.c:3168 [inline] kmem_cache_free+0x8a/0x730 mm/slub.c:3184 putname+0xe1/0x120 fs/namei.c:259 filename_lookup+0x3c3/0x570 fs/namei.c:2464 do_readlinkat+0xcd/0x2f0 fs/stat.c:425 __do_sys_readlinkat fs/stat.c:452 [inline] __se_sys_readlinkat fs/stat.c:449 [inline] __x64_sys_readlinkat+0x93/0xf0 fs/stat.c:449 do_syscall_64+0x31/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f1cbb2170ba Code: 48 8b 0d e1 bd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 0b 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ae bd 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007fff80a8c9f8 EFLAGS: 00000206 ORIG_RAX: 000000000000010b RAX: ffffffffffffffda RBX: 000055ccc94fa830 RCX: 00007f1cbb2170ba RDX: 000055ccc94fa830 RSI: 000055ccc950c1f0 RDI: 00000000ffffff9c RBP: 0000000000000064 R08: 000055ccc935d670 R09: 0000000000000070 R10: 0000000000000063 R11: 0000000000000206 R12: 000055ccc950c1f0 R13: 00000000ffffff9c R14: 00007fff80a8ca50 R15: 0000000000000063