IPVS: ftp: loaded support on port[0] = 21 binder: BINDER_SET_CONTEXT_MGR already set binder: 22164:22171 ioctl 40046207 0 returned -16 ------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: timer_list hint: xprt_init_autodisconnect+0x0/0x160 net/sunrpc/xprt.c:235 WARNING: CPU: 1 PID: 22178 at lib/debugobjects.c:325 debug_print_object+0x160/0x250 lib/debugobjects.c:325 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 22178 Comm: syz-executor.4 Not tainted 4.19.192-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x5a kernel/panic.c:541 report_bug+0x262/0x2b0 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:debug_print_object+0x160/0x250 lib/debugobjects.c:325 Code: dd 00 eb b3 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 00 eb b3 88 48 c7 c7 20 df b3 88 e8 e0 94 7a 04 <0f> 0b 83 05 c3 e9 af 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 RSP: 0018:ffff8880ba107d20 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff814df6b1 RDI: ffffed1017420f96 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: ffffffff8c66105b R12: ffffffff89f90980 R13: ffffffff81530ba0 R14: ffff8880920e2af0 R15: dffffc0000000000 __debug_check_no_obj_freed lib/debugobjects.c:785 [inline] debug_check_no_obj_freed+0x271/0x490 lib/debugobjects.c:817 kfree+0xb9/0x210 mm/slab.c:3821 __rcu_reclaim kernel/rcu/rcu.h:231 [inline] rcu_do_batch kernel/rcu/tree.c:2584 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] rcu_process_callbacks+0xa0d/0x18b0 kernel/rcu/tree.c:2881 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:535 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:334 [inline] RIP: 0010:deref_stack_reg+0x13d/0x1d0 arch/x86/kernel/unwind_orc.c:328 Code: 89 ef e8 96 28 f7 ff 41 89 c0 31 c0 45 85 c0 75 32 48 8d 74 24 28 48 89 ef 4c 89 ea e8 cc fc ff ff 48 c1 ea 03 48 8b 6c 24 28 <48> b8 00 00 00 00 00 fc ff df 80 3c 02 00 75 4c 49 89 6d 00 b8 01 RSP: 0018:ffff88815661f630 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 RAX: ffffffff81377e5f RBX: 1ffff1102acc3ec7 RCX: 0000000000000000 RDX: 1ffff1102acc3f08 RSI: ffff88815661f658 RDI: ffff88815661fdf0 RBP: ffffffff81377e5f R08: ffffffff8b90d108 R09: ffffffff8b90d104 R10: ffff88815661f857 R11: 0000000000074071 R12: ffff88815661f7f8 R13: ffff88815661f840 R14: ffff888156618000 R15: ffffffff8b90d104 unwind_next_frame+0x9fc/0x1400 arch/x86/kernel/unwind_orc.c:502 __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 binder: 22164:22171 unknown command 0 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 binder: 22164:22171 ioctl c0306201 20000200 returned -22 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc mm/slab.c:3397 [inline] kmem_cache_alloc_trace+0x11a/0x380 mm/slab.c:3623 kmalloc include/linux/slab.h:515 [inline] alloc_fdtable+0x7e/0x280 fs/file.c:111 dup_fd+0x6a2/0xbf0 fs/file.c:310 copy_files kernel/fork.c:1390 [inline] copy_process.part.0+0x1e75/0x8260 kernel/fork.c:1900 copy_process kernel/fork.c:1709 [inline] _do_fork+0x22f/0xf30 kernel/fork.c:2218 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe 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:00007fa8e80f9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000101910b00 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe09d756df R14: 00007fa8e80f9300 R15: 0000000000022000 ======================================================