------------[ 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: 20809 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Modules linked in: CPU: 1 PID: 20809 Comm: syz-executor.2 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+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 e0 70 c2 89 4c 89 ee 48 c7 c7 e0 64 c2 89 e8 17 15 02 05 <0f> 0b 83 05 c5 1a f6 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc90000dd8c90 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: ffff888016be0000 RSI: ffffffff815c1465 RDI: fffff520001bb184 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815bb29e R11: 0000000000000000 R12: ffffffff896d9140 R13: ffffffff89c26b20 R14: ffffffff8163ba40 R15: dffffc0000000000 FS: 00007fdbdc239700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000568000 CR3: 0000000077ea8000 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 kfree+0xd1/0x2c0 mm/slab.c:3802 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/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:qlist_free_all+0x67/0x110 mm/kasan/quarantine.c:160 Code: ab b8 81 48 c1 e8 03 42 c6 04 28 fb e8 42 7a ff ff 48 85 db 75 52 9c 58 f6 c4 02 0f 85 a4 00 00 00 48 85 db 74 01 fb 48 85 ed <74> 73 48 89 ee 4d 85 e4 4c 89 e7 74 38 48 63 87 80 00 00 00 48 8b RSP: 0018:ffffc90017d2f6c8 EFLAGS: 00000286 RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff2046af2 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff8880312cbc00 R08: 0000000000000001 R09: ffffffff9022e8b7 R10: 0000000000000001 R11: 000000000000003f R12: 0000000000000000 R13: dffffc0000000000 R14: ffffc90017d2f710 R15: ffffea0000000000 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:272 __kasan_slab_alloc+0x8b/0xa0 mm/kasan/common.c:438 kasan_slab_alloc include/linux/kasan.h:236 [inline] slab_post_alloc_hook mm/slab.h:524 [inline] slab_alloc mm/slab.c:3323 [inline] kmem_cache_alloc+0x275/0x530 mm/slab.c:3507 ptlock_alloc+0x1d/0x70 mm/memory.c:5312 ptlock_init include/linux/mm.h:2223 [inline] pgtable_pte_page_ctor include/linux/mm.h:2250 [inline] __pte_alloc_one include/asm-generic/pgalloc.h:66 [inline] pte_alloc_one+0x68/0x230 arch/x86/mm/pgtable.c:33 __pte_alloc+0x1f/0x2d0 mm/memory.c:440 copy_pte_range mm/memory.c:947 [inline] copy_pmd_range mm/memory.c:1064 [inline] copy_pud_range mm/memory.c:1101 [inline] copy_p4d_range mm/memory.c:1125 [inline] copy_page_range+0x18bf/0x3fe0 mm/memory.c:1198 dup_mmap kernel/fork.c:598 [inline] dup_mm+0x9e7/0x1380 kernel/fork.c:1374 copy_mm kernel/fork.c:1426 [inline] copy_process+0x5e19/0x70f0 kernel/fork.c:2115 kernel_clone+0xe7/0xab0 kernel/fork.c:2502 __do_sys_fork+0x8a/0xc0 kernel/fork.c:2565 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdbdc239188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff0abb75bf R14: 00007fdbdc239300 R15: 0000000000022000