hpet: Lost 1 RTC interrupts ------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff8880565bc890 object type: timer_list hint: rose_t0timer_expiry+0x0/0x150 include/linux/skbuff.h:2942 WARNING: lib/debugobjects.c:629 at debug_print_object+0x18e/0x2a0 lib/debugobjects.c:629, CPU#1: udevd/5359 Modules linked in: CPU: 1 UID: 0 PID: 5359 Comm: udevd Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:debug_print_object+0x19b/0x2a0 lib/debugobjects.c:629 Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4f 48 8d 3d f2 18 e4 0b 41 56 48 8b 14 dd c0 33 1c 8c 4c 89 e6 <67> 48 0f b9 3a 58 83 05 0c c5 d9 0b 01 48 83 c4 18 5b 5d 41 5c 41 RSP: 0000:ffffc90028b97958 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: ffffffff8c1c3300 RSI: ffffffff8c1c2f20 RDI: ffffffff90e6aac0 RBP: 0000000000000001 R08: ffff8880565bc890 R09: ffffffff8bb2c6e0 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c1c2f20 R13: ffffffff8bb2c720 R14: ffffffff8a84b230 R15: ffffc90028b97a58 FS: 00007fa6a5f40880(0000) GS:ffff8880d63db000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff8d15e9f00 CR3: 000000001cb6b000 CR4: 0000000000352ef0 DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002 DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:1116 [inline] debug_check_no_obj_freed+0x4da/0x630 lib/debugobjects.c:1146 slab_free_hook mm/slub.c:2620 [inline] slab_free mm/slub.c:6246 [inline] kfree+0x3d0/0x6c0 mm/slub.c:6561 rose_neigh_put include/net/rose.h:166 [inline] rose_timer_expiry+0x53f/0x630 net/rose/rose_timer.c:183 call_timer_fn+0x19a/0x640 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers+0x75f/0xaf0 kernel/time/timer.c:2374 __run_timer_base kernel/time/timer.c:2386 [inline] __run_timer_base kernel/time/timer.c:2378 [inline] run_timer_base+0x114/0x190 kernel/time/timer.c:2395 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405 handle_softirqs+0x1ea/0xa00 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0x56/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0033:0x55f9bf5728e0 Code: 00 75 f5 48 83 ec 18 48 89 7c 24 08 e8 49 f7 ff ff 48 8b 7c 24 08 48 8b 47 30 48 83 c4 18 c3 0f 1f 00 31 c0 c3 0f 1f 44 00 00 <41> 55 ba 08 00 00 00 41 54 55 48 89 fd 53 48 89 f3 48 8d 35 37 b2 RSP: 002b:00007ffe5a764658 EFLAGS: 00010202 RAX: 000000000000000d RBX: 000000000000000e RCX: 000055f9cdec6ca8 RDX: 0000000000000001 RSI: 00007ffe5a7647b1 RDI: 000055f9cdec6b60 RBP: 000055f9cdec6b60 R08: 0000000000000040 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe5a7647b1 R13: 00000000000000af R14: 00007ffe5a7647b1 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: b8 00 00 00 00 mov $0x0,%eax 5: 00 fc add %bh,%ah 7: ff lcall (bad) 8: df 48 89 fisttps -0x77(%rax) b: fa cli c: 48 c1 ea 03 shr $0x3,%rdx 10: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 14: 75 4f jne 0x65 16: 48 8d 3d f2 18 e4 0b lea 0xbe418f2(%rip),%rdi # 0xbe4190f 1d: 41 56 push %r14 1f: 48 8b 14 dd c0 33 1c mov -0x73e3cc40(,%rbx,8),%rdx 26: 8c 27: 4c 89 e6 mov %r12,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 58 pop %rax 30: 83 05 0c c5 d9 0b 01 addl $0x1,0xbd9c50c(%rip) # 0xbd9c543 37: 48 83 c4 18 add $0x18,%rsp 3b: 5b pop %rbx 3c: 5d pop %rbp 3d: 41 5c pop %r12 3f: 41 rex.B