netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. block (null): Could not allocate knbd recv work queue. ------------[ cut here ]------------ ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 WARNING: CPU: 1 PID: 23137 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Modules linked in: CPU: 1 PID: 23137 Comm: syz-executor.5 Not tainted 5.16.0-rc3-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 80 28 05 8a 4c 89 ee 48 c7 c7 80 1c 05 8a e8 c1 cf 21 05 <0f> 0b 83 05 b5 91 b2 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0000:ffffc900040ef0e0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815f1d88 RDI: fffff5200081de0e RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ebb2e R11: 0000000000000000 R12: ffffffff89adf560 R13: ffffffff8a052300 R14: ffffffff816612a0 R15: 1ffff9200081de27 FS: 00007f93b0c1b700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fab57d95fc0 CR3: 000000006d8d8000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_object_assert_init lib/debugobjects.c:895 [inline] debug_object_assert_init+0x1f4/0x2e0 lib/debugobjects.c:866 debug_timer_assert_init kernel/time/timer.c:739 [inline] debug_assert_init kernel/time/timer.c:784 [inline] try_to_del_timer_sync+0x6d/0x110 kernel/time/timer.c:1229 del_timer_sync+0x138/0x1b0 kernel/time/timer.c:1382 cleanup_srcu_struct+0x14c/0x2f0 kernel/rcu/srcutree.c:379 blk_mq_hw_sysfs_release+0x147/0x190 block/blk-mq-sysfs.c:40 kobject_cleanup lib/kobject.c:705 [inline] kobject_release lib/kobject.c:736 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:753 blk_mq_release+0x259/0x430 block/blk-mq.c:3546 blk_release_queue+0x186/0x320 block/blk-sysfs.c:799 kobject_cleanup lib/kobject.c:705 [inline] kobject_release lib/kobject.c:736 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:753 disk_release+0x19a/0x260 block/genhd.c:1120 device_release+0x9f/0x240 drivers/base/core.c:2230 kobject_cleanup lib/kobject.c:705 [inline] kobject_release lib/kobject.c:736 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:753 put_device+0x1b/0x30 drivers/base/core.c:3501 put_disk block/genhd.c:1372 [inline] blk_cleanup_disk+0x6b/0x80 block/genhd.c:1388 nbd_dev_add+0x92e/0xcd0 drivers/block/nbd.c:1832 nbd_genl_connect+0x11f3/0x1930 drivers/block/nbd.c:1948 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:731 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:792 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2496 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f93b1ce7ae9 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:00007f93b0c1b188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f93b1dfb0f0 RCX: 00007f93b1ce7ae9 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000006 RBP: 00007f93b1d41ff7 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc4a7715df R14: 00007f93b0c1b300 R15: 0000000000022000