------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: percpu_counter hint: 0x0 WARNING: CPU: 1 PID: 12235 at lib/debugobjects.c:481 debug_print_object+0x168/0x250 lib/debugobjects.c:481 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 12235 Comm: syz-executor.2 Not tainted 5.3.0-rc6-next-20190826 #73 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+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2dc/0x755 kernel/panic.c:220 __warn.cold+0x2f/0x3c kernel/panic.c:581 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:debug_print_object+0x168/0x250 lib/debugobjects.c:481 Code: dd 60 6c e6 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd 60 6c e6 87 48 c7 c7 c0 61 e6 87 e8 20 31 01 fe <0f> 0b 83 05 f3 67 83 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3 RSP: 0018:ffff8880587c7938 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815bd606 RDI: ffffed100b0f8f19 RBP: ffff8880587c7978 R08: ffff888056bf02c0 R09: ffffed1015d24109 R10: ffffed1015d24108 R11: ffff8880ae920847 R12: 0000000000000001 R13: ffffffff8935e800 R14: 0000000000000000 R15: ffff8880a1bf1310 __debug_check_no_obj_freed lib/debugobjects.c:963 [inline] debug_check_no_obj_freed+0x2d4/0x43f lib/debugobjects.c:994 kfree+0xf8/0x2c0 mm/slab.c:3755 ext4_fill_super+0x8cb/0xcc80 fs/ext4/super.c:4684 mount_bdev+0x304/0x3c0 fs/super.c:1407 ext4_mount+0x35/0x40 fs/ext4/super.c:6019 legacy_get_tree+0x113/0x220 fs/fs_context.c:651 vfs_get_tree+0x8f/0x380 fs/super.c:1482 do_new_mount fs/namespace.c:2796 [inline] do_mount+0x13b3/0x1c30 fs/namespace.c:3116 ksys_mount+0xdb/0x150 fs/namespace.c:3325 __do_sys_mount fs/namespace.c:3339 [inline] __se_sys_mount fs/namespace.c:3336 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3336 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c2ca Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 9d 8d fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 7a 8d fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007f6cc03daa88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f6cc03dab40 RCX: 000000000045c2ca RDX: 00007f6cc03daae0 RSI: 0000000020000000 RDI: 00007f6cc03dab00 RBP: 0000000000001000 R08: 00007f6cc03dab40 R09: 00007f6cc03daae0 R10: 0000000000000001 R11: 0000000000000206 R12: 0000000000000003 R13: 00000000004c89d6 R14: 00000000004df8f8 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..