------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: hrtimer hint: isotp_rx_timer_handler+0x0/0x160 net/can/isotp.c:1415 WARNING: CPU: 1 PID: 19 at lib/debugobjects.c:508 debug_print_object lib/debugobjects.c:505 [inline] WARNING: CPU: 1 PID: 19 at lib/debugobjects.c:508 __debug_check_no_obj_freed lib/debugobjects.c:987 [inline] WARNING: CPU: 1 PID: 19 at lib/debugobjects.c:508 debug_check_no_obj_freed+0x44b/0x650 lib/debugobjects.c:1018 Modules linked in: CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 5.13.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:debug_print_object lib/debugobjects.c:505 [inline] RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:987 [inline] RIP: 0010:debug_check_no_obj_freed+0x44b/0x650 lib/debugobjects.c:1018 Code: 4c 89 ef e8 47 38 c6 fd 4d 8b 45 00 48 c7 c7 c0 a8 92 8a 48 c7 c6 e0 a4 92 8a 48 89 da 44 89 f1 4d 89 f9 31 c0 e8 c5 57 4a fd <0f> 0b 48 ba 00 00 00 00 00 fc ff df ff 05 3f 5c 37 0a 48 8b 5c 24 RSP: 0018:ffffc90000d977c8 EFLAGS: 00010246 RAX: 21690da8d4a10100 RBX: ffffffff8a92aa80 RCX: ffff888012c4d4c0 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: ffff8880251382b8 R08: ffffffff816564b2 R09: ffffed1017365f90 R10: ffffed1017365f90 R11: 0000000000000000 R12: ffff8880251382b4 R13: ffffffff8a30f240 R14: 0000000000000000 R15: ffffffff88e03110 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe4919f690 CR3: 000000007f659000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: free_pages_prepare mm/page_alloc.c:1303 [inline] __free_pages_ok+0x2f5/0x1180 mm/page_alloc.c:1572 kfree+0x287/0x2d0 mm/slub.c:4209 sk_prot_free net/core/sock.c:1747 [inline] __sk_destruct+0x5d6/0x830 net/core/sock.c:1832 rcu_do_batch kernel/rcu/tree.c:2558 [inline] rcu_core+0x906/0x14b0 kernel/rcu/tree.c:2793 __do_softirq+0x372/0x7a6 kernel/softirq.c:559 run_ksoftirqd+0xa2/0x100 kernel/softirq.c:921 smpboot_thread_fn+0x618/0xa50 kernel/smpboot.c:165 kthread+0x39a/0x3c0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294