------------[ 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: 1 PID: 12757 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Modules linked in: CPU: 1 PID: 12757 Comm: syz-executor.5 Not tainted 5.13.0-rc6-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 20 03 c3 89 4c 89 ee 48 c7 c7 20 f7 c2 89 e8 8d 7e 05 05 <0f> 0b 83 05 45 61 f6 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc90000dc0c58 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: ffff888079ba54c0 RSI: ffffffff815ce2a5 RDI: fffff520001b817d RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815c810e R11: 0000000000000000 R12: ffffffff896da7c0 R13: ffffffff89c2fd60 R14: ffffffff816487b0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe24656fd8 CR3: 000000006556a000 CR4: 00000000001506e0 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:1303 [inline] __free_pages_ok+0x254/0xce0 mm/page_alloc.c:1572 sk_prot_free net/core/sock.c:1767 [inline] __sk_destruct+0x6c6/0x900 net/core/sock.c:1852 sk_destruct+0xbd/0xe0 net/core/sock.c:1867 __sk_free+0xef/0x3d0 net/core/sock.c:1878 sk_free+0x78/0xa0 net/core/sock.c:1889 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/0x13b0 kernel/rcu/tree.c:2793 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559 invoke_softirq kernel/softirq.c:433 [inline] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 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:647 RIP: 0010:lock_acquire+0x1ef/0x740 kernel/locking/lockdep.c:5480 Code: 72 a7 7e 83 f8 01 0f 85 ee 03 00 00 9c 58 f6 c4 02 0f 85 d9 03 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffffc900190075e8 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff92003200ebf RCX: 000000003dfe94e6 RDX: 1ffff1100f374bd6 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff9026f8a7 R10: fffffbfff204df14 R11: 0000000000000000 R12: 0000000000000002 R13: ffffffff8bf79620 R14: 0000000000000000 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:267 [inline] rcu_read_lock include/linux/rcupdate.h:657 [inline] lock_page_memcg+0x66/0x7d0 mm/memcontrol.c:1982 page_remove_rmap+0x25/0x1430 mm/rmap.c:1345 zap_pte_range mm/memory.c:1270 [inline] zap_pmd_range mm/memory.c:1385 [inline] zap_pud_range mm/memory.c:1414 [inline] zap_p4d_range mm/memory.c:1435 [inline] unmap_page_range+0xea6/0x2890 mm/memory.c:1456 unmap_single_vma+0x198/0x300 mm/memory.c:1501 unmap_vmas+0x16d/0x2f0 mm/memory.c:1533 exit_mmap+0x2a8/0x590 mm/mmap.c:3208 __mmput+0x122/0x470 kernel/fork.c:1096 mmput+0x58/0x60 kernel/fork.c:1117 exit_mm kernel/exit.c:502 [inline] do_exit+0xb0a/0x2a60 kernel/exit.c:813 do_group_exit+0x125/0x310 kernel/exit.c:923 get_signal+0x47f/0x2150 kernel/signal.c:2835 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:789 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x180/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 Code: Unable to access opcode bytes at RIP 0x4665af. RSP: 002b:00007f0770b77188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: 000000000000003c RBX: 000000000056c038 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007fff8547b37f R14: 00007f0770b77300 R15: 0000000000022000