kernel msg: ebtables bug: please report to author: Hook order must be followed ====================================================== WARNING: possible circular locking dependency detected 4.19.0-rc2+ #96 Not tainted ------------------------------------------------------ syz-executor1/771 is trying to acquire lock: 00000000bad07a70 (&(&u->lock)->rlock/1){+.+.}, at: sk_diag_dump_icons net/unix/diag.c:82 [inline] 00000000bad07a70 (&(&u->lock)->rlock/1){+.+.}, at: sk_diag_fill.isra.5+0xa57/0x10e0 net/unix/diag.c:144 but task is already holding lock: 0000000018a06f31 (rlock-AF_UNIX){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline] 0000000018a06f31 (rlock-AF_UNIX){+.+.}, at: sk_diag_dump_icons net/unix/diag.c:64 [inline] 0000000018a06f31 (rlock-AF_UNIX){+.+.}, at: sk_diag_fill.isra.5+0x962/0x10e0 net/unix/diag.c:144 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (rlock-AF_UNIX){+.+.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152 skb_queue_tail+0x26/0x150 net/core/skbuff.c:2918 unix_dgram_sendmsg+0xfa3/0x1750 net/unix/af_unix.c:1802 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 ___sys_sendmsg+0x51d/0x930 net/socket.c:2114 __sys_sendmmsg+0x246/0x6d0 net/socket.c:2209 __do_sys_sendmmsg net/socket.c:2238 [inline] __se_sys_sendmmsg net/socket.c:2235 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2235 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&(&u->lock)->rlock/1){+.+.}: lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3901 _raw_spin_lock_nested+0x33/0x50 kernel/locking/spinlock.c:354 sk_diag_dump_icons net/unix/diag.c:82 [inline] sk_diag_fill.isra.5+0xa57/0x10e0 net/unix/diag.c:144 sk_diag_dump net/unix/diag.c:178 [inline] unix_diag_dump+0x35f/0x550 net/unix/diag.c:206 netlink_dump+0x519/0xd50 net/netlink/af_netlink.c:2233 __netlink_dump_start+0x4f1/0x6f0 net/netlink/af_netlink.c:2329 netlink_dump_start include/linux/netlink.h:213 [inline] unix_diag_handler_dump+0x3fc/0x7d0 net/unix/diag.c:307 __sock_diag_cmd net/core/sock_diag.c:232 [inline] sock_diag_rcv_msg+0x31d/0x410 net/core/sock_diag.c:263 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2454 sock_diag_rcv+0x2a/0x40 net/core/sock_diag.c:274 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1343 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 sock_write_iter+0x35e/0x5c0 net/socket.c:900 call_write_iter include/linux/fs.h:1807 [inline] do_iter_readv_writev+0x8b0/0xa80 fs/read_write.c:680 do_iter_write+0x185/0x5f0 fs/read_write.c:959 vfs_writev+0x1f1/0x360 fs/read_write.c:1004 do_writev+0x11a/0x310 fs/read_write.c:1039 __do_sys_writev fs/read_write.c:1112 [inline] __se_sys_writev fs/read_write.c:1109 [inline] __x64_sys_writev+0x75/0xb0 fs/read_write.c:1109 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(rlock-AF_UNIX); lock(&(&u->lock)->rlock/1); lock(rlock-AF_UNIX); lock(&(&u->lock)->rlock/1); *** DEADLOCK *** 5 locks held by syz-executor1/771: #0: 00000000f07bf5ee (sock_diag_mutex){+.+.}, at: sock_diag_rcv+0x1b/0x40 net/core/sock_diag.c:273 #1: 000000000c3befc1 (sock_diag_table_mutex){+.+.}, at: __sock_diag_cmd net/core/sock_diag.c:227 [inline] #1: 000000000c3befc1 (sock_diag_table_mutex){+.+.}, at: sock_diag_rcv_msg+0x1a6/0x410 net/core/sock_diag.c:263 #2: 00000000f421fa7e (nlk_cb_mutex-SOCK_DIAG){+.+.}, at: netlink_dump+0x9f/0xd50 net/netlink/af_netlink.c:2189 #3: 0000000044ecdea0 (unix_table_lock){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline] #3: 0000000044ecdea0 (unix_table_lock){+.+.}, at: unix_diag_dump+0x10a/0x550 net/unix/diag.c:192 #4: 0000000018a06f31 (rlock-AF_UNIX){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline] #4: 0000000018a06f31 (rlock-AF_UNIX){+.+.}, at: sk_diag_dump_icons net/unix/diag.c:64 [inline] #4: 0000000018a06f31 (rlock-AF_UNIX){+.+.}, at: sk_diag_fill.isra.5+0x962/0x10e0 net/unix/diag.c:144 stack backtrace: CPU: 0 PID: 771 Comm: syz-executor1 Not tainted 4.19.0-rc2+ #96 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+0x1c4/0x2b4 lib/dump_stack.c:113 print_circular_bug.isra.33.cold.54+0x1bd/0x27d kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1862 [inline] check_prevs_add kernel/locking/lockdep.c:1975 [inline] validate_chain kernel/locking/lockdep.c:2416 [inline] __lock_acquire+0x33e4/0x4ec0 kernel/locking/lockdep.c:3412 lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3901 _raw_spin_lock_nested+0x33/0x50 kernel/locking/spinlock.c:354 sk_diag_dump_icons net/unix/diag.c:82 [inline] sk_diag_fill.isra.5+0xa57/0x10e0 net/unix/diag.c:144 sk_diag_dump net/unix/diag.c:178 [inline] unix_diag_dump+0x35f/0x550 net/unix/diag.c:206 netlink_dump+0x519/0xd50 net/netlink/af_netlink.c:2233 __netlink_dump_start+0x4f1/0x6f0 net/netlink/af_netlink.c:2329 netlink_dump_start include/linux/netlink.h:213 [inline] unix_diag_handler_dump+0x3fc/0x7d0 net/unix/diag.c:307 __sock_diag_cmd net/core/sock_diag.c:232 [inline] sock_diag_rcv_msg+0x31d/0x410 net/core/sock_diag.c:263 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2454 sock_diag_rcv+0x2a/0x40 net/core/sock_diag.c:274 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1343 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 sock_write_iter+0x35e/0x5c0 net/socket.c:900 call_write_iter include/linux/fs.h:1807 [inline] do_iter_readv_writev+0x8b0/0xa80 fs/read_write.c:680 do_iter_write+0x185/0x5f0 fs/read_write.c:959 vfs_writev+0x1f1/0x360 fs/read_write.c:1004 kernel msg: ebtables bug: please report to author: Hook order must be followed do_writev+0x11a/0x310 fs/read_write.c:1039 __do_sys_writev fs/read_write.c:1112 [inline] __se_sys_writev fs/read_write.c:1109 [inline] __x64_sys_writev+0x75/0xb0 fs/read_write.c:1109 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4572d9 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9599bc0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f9599bc16d4 RCX: 00000000004572d9 RDX: 0000000000000001 RSI: 00000000200000c0 RDI: 0000000000000006 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d87e0 R14: 00000000004c8c56 R15: 0000000000000000 kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000c3114f32): kobject_uevent_env kobject: 'loop3' (00000000c3114f32): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000004d9b981e): kobject_uevent_env kobject: 'loop4' (000000004d9b981e): fill_kobj_path: path = '/devices/virtual/block/loop4' netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kernel msg: ebtables bug: please report to author: Hook order must be followed netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop5' (00000000ec7b946a): kobject_uevent_env kobject: 'loop5' (00000000ec7b946a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000c3114f32): kobject_uevent_env kobject: 'loop3' (00000000c3114f32): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000ec7b946a): kobject_uevent_env kobject: 'loop5' (00000000ec7b946a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000004d9b981e): kobject_uevent_env kobject: 'loop4' (000000004d9b981e): fill_kobj_path: path = '/devices/virtual/block/loop4' netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kernel msg: ebtables bug: please report to author: Hook order must be followed netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kobject: 'loop3' (00000000c3114f32): kobject_uevent_env kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop3' (00000000c3114f32): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000ec7b946a): kobject_uevent_env kobject: 'loop5' (00000000ec7b946a): fill_kobj_path: path = '/devices/virtual/block/loop5' kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop4' (000000004d9b981e): kobject_uevent_env kobject: 'loop4' (000000004d9b981e): fill_kobj_path: path = '/devices/virtual/block/loop4' kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop2' (00000000dbe15551): kobject_uevent_env netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000c3114f32): kobject_uevent_env kobject: 'loop3' (00000000c3114f32): fill_kobj_path: path = '/devices/virtual/block/loop3' netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kernel msg: ebtables bug: please report to author: Hook order must be followed netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000c3114f32): kobject_uevent_env kobject: 'loop3' (00000000c3114f32): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000ec7b946a): kobject_uevent_env kobject: 'loop5' (00000000ec7b946a): fill_kobj_path: path = '/devices/virtual/block/loop5' kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop4' (000000004d9b981e): kobject_uevent_env kobject: 'loop4' (000000004d9b981e): fill_kobj_path: path = '/devices/virtual/block/loop4' kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000c3114f32): kobject_uevent_env kobject: 'loop3' (00000000c3114f32): fill_kobj_path: path = '/devices/virtual/block/loop3' kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000ec7b946a): kobject_uevent_env kobject: 'loop5' (00000000ec7b946a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000004d9b981e): kobject_uevent_env kobject: 'loop4' (000000004d9b981e): fill_kobj_path: path = '/devices/virtual/block/loop4' kernel msg: ebtables bug: please report to author: Hook order must be followed nla_parse: 6 callbacks suppressed netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kernel msg: ebtables bug: please report to author: Hook order must be followed netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000c3114f32): kobject_uevent_env kobject: 'loop3' (00000000c3114f32): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kernel msg: ebtables bug: please report to author: Hook order must be followed netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000c3114f32): kobject_uevent_env kobject: 'loop3' (00000000c3114f32): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop4' (000000004d9b981e): kobject_uevent_env kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop4' (000000004d9b981e): fill_kobj_path: path = '/devices/virtual/block/loop4' netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000c3114f32): kobject_uevent_env kobject: 'loop3' (00000000c3114f32): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000ec7b946a): kobject_uevent_env netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kobject: 'loop5' (00000000ec7b946a): fill_kobj_path: path = '/devices/virtual/block/loop5' kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000c3114f32): kobject_uevent_env kobject: 'loop3' (00000000c3114f32): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0' kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop4' (000000004d9b981e): kobject_uevent_env netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kobject: 'loop4' (000000004d9b981e): fill_kobj_path: path = '/devices/virtual/block/loop4' netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000c3114f32): kobject_uevent_env kobject: 'loop3' (00000000c3114f32): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000ec7b946a): kobject_uevent_env kobject: 'loop5' (00000000ec7b946a): fill_kobj_path: path = '/devices/virtual/block/loop5' kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kernel msg: ebtables bug: please report to author: Hook order must be followed kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000dbe15551): kobject_uevent_env kobject: 'loop2' (00000000dbe15551): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000c3114f32): kobject_uevent_env kobject: 'loop3' (00000000c3114f32): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (0000000056fee8ef): kobject_uevent_env kobject: 'loop1' (0000000056fee8ef): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000917fbd0f): kobject_uevent_env kobject: 'loop0' (00000000917fbd0f): fill_kobj_path: path = '/devices/virtual/block/loop0'