====================================================== WARNING: possible circular locking dependency detected 4.19.0-rc5+ #243 Not tainted ------------------------------------------------------ syz-executor2/11780 is trying to acquire lock: 00000000c41faeff ((wq_completion)bond_dev->name){+.+.}, at: flush_workqueue+0x2db/0x1e10 kernel/workqueue.c:2652 kobject: 'loop5' (00000000049cab0f): kobject_uevent_env but task is already holding lock: 000000005264394c (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] 000000005264394c (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40e/0xc20 net/core/rtnetlink.c:4727 which lock already depends on the new lock. kobject: 'loop5' (00000000049cab0f): fill_kobj_path: path = '/devices/virtual/block/loop5' the existing dependency chain (in reverse order) is: -> #2 (rtnl_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x1700 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'loop3' (0000000036c33e3a): kobject_uevent_env rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 kobject: 'loop3' (0000000036c33e3a): fill_kobj_path: path = '/devices/virtual/block/loop3' bond_netdev_notify drivers/net/bonding/bond_main.c:1303 [inline] bond_netdev_notify_work+0x44/0xd0 drivers/net/bonding/bond_main.c:1313 process_one_work+0xc90/0x1b90 kernel/workqueue.c:2153 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 kthread+0x35a/0x420 kernel/kthread.c:246 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 -> #1 ((work_completion)(&(&nnw->work)->work)){+.+.}: process_one_work+0xc0a/0x1b90 kernel/workqueue.c:2129 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 kthread+0x35a/0x420 kernel/kthread.c:246 CPU: 0 PID: 11800 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #243 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 -> #0 Call Trace: ( __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 (wq_completion)bond_dev->name ){+.+.} fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 : lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3900 flush_workqueue+0x30a/0x1e10 kernel/workqueue.c:2655 drain_workqueue+0x2a9/0x640 kernel/workqueue.c:2820 destroy_workqueue+0xc6/0x9c0 kernel/workqueue.c:4155 __alloc_workqueue_key+0xed8/0x1170 kernel/workqueue.c:4138 bond_init+0x265/0x940 drivers/net/bonding/bond_main.c:4727 register_netdevice+0x332/0x10f0 net/core/dev.c:8410 bond_newlink+0x49/0xa0 drivers/net/bonding/bond_netlink.c:453 rtnl_newlink+0xec6/0x1d40 net/core/rtnetlink.c:3118 rtnetlink_rcv_msg+0x46a/0xc20 net/core/rtnetlink.c:4730 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2447 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4748 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116 __sys_sendmsg+0x11d/0x280 net/socket.c:2154 __do_sys_sendmsg net/socket.c:2163 [inline] __se_sys_sendmsg net/socket.c:2161 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2161 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: Chain exists of: (wq_completion)bond_dev->name --> (work_completion)(&(&nnw->work)->work) --> rtnl_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- __should_failslab+0x124/0x180 mm/failslab.c:32 lock(rtnl_mutex should_failslab+0x9/0x14 mm/slab_common.c:1557 ); slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node_trace+0x270/0x740 mm/slab.c:3661 lock((work_completion)(&(&nnw->work)->work) ); lock(rtnl_mutex __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696 ); lock( __kmalloc_reserve.isra.39+0x41/0xe0 net/core/skbuff.c:137 (wq_completion)bond_dev->name __alloc_skb+0x155/0x770 net/core/skbuff.c:205 ); *** DEADLOCK *** 1 lock held by syz-executor2/11780: #0: 000000005264394c ( rtnl_mutex ){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] ){+.+.}, at: rtnetlink_rcv_msg+0x40e/0xc20 net/core/rtnetlink.c:4727 stack backtrace: alloc_skb include/linux/skbuff.h:997 [inline] __ip6_append_data.isra.47+0x2738/0x3530 net/ipv6/ip6_output.c:1425 ip6_append_data+0x1bc/0x2d0 net/ipv6/ip6_output.c:1587 rawv6_sendmsg+0x15a8/0x4630 net/ipv6/raw.c:926 inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 __sys_sendto+0x3d7/0x670 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa6a1744c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fa6a1744c90 RCX: 0000000000457579 RDX: 000000000000ffa7 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000072bfa0 R08: 0000000020000180 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6a17456d4 R13: 00000000004c3935 R14: 00000000004d57d8 R15: 0000000000000005 CPU: 1 PID: 11780 Comm: syz-executor2 Not tainted 4.19.0-rc5+ #243 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:1221 check_prev_add kernel/locking/lockdep.c:1861 [inline] check_prevs_add kernel/locking/lockdep.c:1974 [inline] validate_chain kernel/locking/lockdep.c:2415 [inline] __lock_acquire+0x33e4/0x4ec0 kernel/locking/lockdep.c:3411 lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3900 flush_workqueue+0x30a/0x1e10 kernel/workqueue.c:2655 drain_workqueue+0x2a9/0x640 kernel/workqueue.c:2820 destroy_workqueue+0xc6/0x9c0 kernel/workqueue.c:4155 __alloc_workqueue_key+0xed8/0x1170 kernel/workqueue.c:4138 bond_init+0x265/0x940 drivers/net/bonding/bond_main.c:4727 register_netdevice+0x332/0x10f0 net/core/dev.c:8410 bond_newlink+0x49/0xa0 drivers/net/bonding/bond_netlink.c:453 rtnl_newlink+0xec6/0x1d40 net/core/rtnetlink.c:3118 rtnetlink_rcv_msg+0x46a/0xc20 net/core/rtnetlink.c:4730 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2447 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4748 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116 __sys_sendmsg+0x11d/0x280 net/socket.c:2154 __do_sys_sendmsg net/socket.c:2163 [inline] __se_sys_sendmsg net/socket.c:2161 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2161 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6df560ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000006 RBP: 000000000072c0e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6df560b6d4 R13: 00000000004c38b9 R14: 00000000004d5700 R15: 00000000ffffffff nla_parse: 5 callbacks suppressed netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. kobject: 'loop2' (00000000ff357245): kobject_uevent_env kobject: 'loop2' (00000000ff357245): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'bcsf0' (000000002ab6fd80): kobject_cleanup, parent (null) kobject: 'bcsf0' (000000002ab6fd80): calling ktype release kobject: 'loop3' (0000000036c33e3a): kobject_uevent_env kobject: 'bcsf0': free name kobject: 'loop3' (0000000036c33e3a): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'bcsf0' (000000007cc75e0e): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop1' (00000000fd19516b): kobject_uevent_env kobject: 'bcsf0' (000000007cc75e0e): kobject_uevent_env kobject: 'loop1' (00000000fd19516b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'bcsf0' (000000007cc75e0e): fill_kobj_path: path = '/devices/virtual/net/bcsf0' kobject: 'loop5' (00000000049cab0f): kobject_uevent_env kobject: 'queues' (000000002d06e39e): kobject_add_internal: parent: 'bcsf0', set: '' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'queues' (000000002d06e39e): kobject_uevent_env kobject: 'queues' (000000002d06e39e): kobject_uevent_env: filter function caused the event to drop! CPU: 0 PID: 11821 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #243 kobject: 'loop5' (00000000049cab0f): fill_kobj_path: path = '/devices/virtual/block/loop5' 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 kobject: 'loop0' (000000009c6148fb): kobject_uevent_env fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 kobject: 'loop0' (000000009c6148fb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'rx-0' (00000000a3b08771): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (00000000a3b08771): kobject_uevent_env kobject: 'rx-0' (00000000a3b08771): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/rx-0' kobject: 'tx-0' (0000000046ffa562): kobject_add_internal: parent: 'queues', set: 'queues' __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node+0x26e/0x730 mm/slab.c:3642 kobject: 'tx-0' (0000000046ffa562): kobject_uevent_env __alloc_skb+0x119/0x770 net/core/skbuff.c:193 kobject: 'tx-0' (0000000046ffa562): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/tx-0' alloc_skb include/linux/skbuff.h:997 [inline] __ip6_append_data.isra.47+0x2738/0x3530 net/ipv6/ip6_output.c:1425 kobject: 'brif' (00000000c05d4d39): kobject_add_internal: parent: 'bcsf0', set: '' ip6_append_data+0x1bc/0x2d0 net/ipv6/ip6_output.c:1587 rawv6_sendmsg+0x15a8/0x4630 net/ipv6/raw.c:926 inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 __sys_sendto+0x3d7/0x670 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa6a1744c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fa6a1744c90 RCX: 0000000000457579 RDX: 000000000000ffa7 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000072bfa0 R08: 0000000020000180 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6a17456d4 R13: 00000000004c3935 R14: 00000000004d57d8 R15: 0000000000000005 netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. kobject: 'brif' (00000000c05d4d39): kobject_cleanup, parent 000000007cc75e0e kobject: 'loop5' (00000000049cab0f): kobject_uevent_env kobject: 'brif' (00000000c05d4d39): auto cleanup kobject_del kobject: 'loop5' (00000000049cab0f): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'brif' (00000000c05d4d39): calling ktype release kobject: 'loop3' (0000000036c33e3a): kobject_uevent_env kobject: (00000000c05d4d39): dynamic_kobj_release kobject: 'brif': free name kobject: 'loop3' (0000000036c33e3a): fill_kobj_path: path = '/devices/virtual/block/loop3' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop1' (00000000fd19516b): kobject_uevent_env kobject: 'rx-0' (00000000a3b08771): kobject_cleanup, parent 000000002d06e39e CPU: 0 PID: 11842 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #243 kobject: 'loop1' (00000000fd19516b): fill_kobj_path: path = '/devices/virtual/block/loop1' 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 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 kobject: 'rx-0' (00000000a3b08771): auto cleanup 'remove' event kobject: 'rx-0' (00000000a3b08771): kobject_uevent_env kobject: 'rx-0' (00000000a3b08771): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/rx-0' kobject: 'rx-0' (00000000a3b08771): auto cleanup kobject_del kobject: 'rx-0' (00000000a3b08771): calling ktype release __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 kobject: 'rx-0': free name slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node_trace+0x270/0x740 mm/slab.c:3661 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696 kobject: 'tx-0' (0000000046ffa562): kobject_cleanup, parent 000000002d06e39e __kmalloc_reserve.isra.39+0x41/0xe0 net/core/skbuff.c:137 __alloc_skb+0x155/0x770 net/core/skbuff.c:205 kobject: 'tx-0' (0000000046ffa562): auto cleanup 'remove' event kobject: 'tx-0' (0000000046ffa562): kobject_uevent_env alloc_skb include/linux/skbuff.h:997 [inline] __ip6_append_data.isra.47+0x2738/0x3530 net/ipv6/ip6_output.c:1425 kobject: 'tx-0' (0000000046ffa562): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/tx-0' kobject: 'tx-0' (0000000046ffa562): auto cleanup kobject_del kobject: 'tx-0' (0000000046ffa562): calling ktype release kobject: 'tx-0': free name ip6_append_data+0x1bc/0x2d0 net/ipv6/ip6_output.c:1587 kobject: 'queues' (000000002d06e39e): kobject_cleanup, parent (null) rawv6_sendmsg+0x15a8/0x4630 net/ipv6/raw.c:926 kobject: 'queues' (000000002d06e39e): calling ktype release kobject: 'queues' (000000002d06e39e): kset_release kobject: 'queues': free name kobject: 'bcsf0' (000000007cc75e0e): kobject_uevent_env inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 kobject: 'bcsf0' (000000007cc75e0e): fill_kobj_path: path = '/devices/virtual/net/bcsf0' sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 __sys_sendto+0x3d7/0x670 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa6a1744c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fa6a1744c90 RCX: 0000000000457579 RDX: 000000000000ffa7 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000072bfa0 R08: 0000000020000180 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6a17456d4 R13: 00000000004c3935 R14: 00000000004d57d8 R15: 0000000000000005 netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. kobject: 'loop2' (00000000ff357245): kobject_uevent_env netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. kobject: 'loop2' (00000000ff357245): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'bcsf0' (000000007cc75e0e): kobject_cleanup, parent (null) kobject: 'loop5' (00000000049cab0f): kobject_uevent_env kobject: 'bcsf0' (000000007cc75e0e): calling ktype release kobject: 'loop5' (00000000049cab0f): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'bcsf0': free name kobject: 'loop1' (00000000fd19516b): kobject_uevent_env kobject: 'bcsf0' (00000000b41ac2a6): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop1' (00000000fd19516b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'bcsf0' (00000000b41ac2a6): kobject_uevent_env kobject: 'bcsf0' (00000000b41ac2a6): fill_kobj_path: path = '/devices/virtual/net/bcsf0' kobject: 'loop4' (0000000045417e16): kobject_uevent_env kobject: 'queues' (00000000e234b2a1): kobject_add_internal: parent: 'bcsf0', set: '' kobject: 'loop4' (0000000045417e16): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'queues' (00000000e234b2a1): kobject_uevent_env kobject: 'loop3' (0000000036c33e3a): kobject_uevent_env kobject: 'queues' (00000000e234b2a1): kobject_uevent_env: filter function caused the event to drop! FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'rx-0' (0000000065a0fa61): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop3' (0000000036c33e3a): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'rx-0' (0000000065a0fa61): kobject_uevent_env CPU: 1 PID: 11862 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #243 kobject: 'rx-0' (0000000065a0fa61): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/rx-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+0x1c4/0x2b4 lib/dump_stack.c:113 kobject: 'tx-0' (000000007c536cdc): kobject_add_internal: parent: 'queues', set: 'queues' fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 kobject: 'tx-0' (000000007c536cdc): kobject_uevent_env kobject: 'tx-0' (000000007c536cdc): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/tx-0' kobject: 'brif' (00000000886a0492): kobject_add_internal: parent: 'bcsf0', set: '' __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node+0x26e/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:997 [inline] __ip6_append_data.isra.47+0x2738/0x3530 net/ipv6/ip6_output.c:1425 ip6_append_data+0x1bc/0x2d0 net/ipv6/ip6_output.c:1587 rawv6_sendmsg+0x15a8/0x4630 net/ipv6/raw.c:926 inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 __sys_sendto+0x3d7/0x670 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa6a1744c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fa6a1744c90 RCX: 0000000000457579 RDX: 000000000000ffa7 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000072bfa0 R08: 0000000020000180 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6a17456d4 R13: 00000000004c3935 R14: 00000000004d57d8 R15: 0000000000000005 netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. kobject: 'brif' (00000000886a0492): kobject_cleanup, parent 00000000b41ac2a6 kobject: 'brif' (00000000886a0492): auto cleanup kobject_del kobject: 'brif' (00000000886a0492): calling ktype release kobject: (00000000886a0492): dynamic_kobj_release kobject: 'brif': free name kobject: 'loop2' (00000000ff357245): kobject_uevent_env kobject: 'loop2' (00000000ff357245): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000049cab0f): kobject_uevent_env kobject: 'loop5' (00000000049cab0f): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000fd19516b): kobject_uevent_env kobject: 'loop1' (00000000fd19516b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'rx-0' (0000000065a0fa61): kobject_cleanup, parent 00000000e234b2a1 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'rx-0' (0000000065a0fa61): auto cleanup 'remove' event kobject: 'loop3' (0000000036c33e3a): kobject_uevent_env CPU: 0 PID: 11877 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #243 kobject: 'loop3' (0000000036c33e3a): fill_kobj_path: path = '/devices/virtual/block/loop3' 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 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 kobject: 'rx-0' (0000000065a0fa61): kobject_uevent_env kobject: 'rx-0' (0000000065a0fa61): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/rx-0' kobject: 'rx-0' (0000000065a0fa61): auto cleanup kobject_del kobject: 'rx-0' (0000000065a0fa61): calling ktype release kobject: 'rx-0': free name __should_failslab+0x124/0x180 mm/failslab.c:32 kobject: 'tx-0' (000000007c536cdc): kobject_cleanup, parent 00000000e234b2a1 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node_trace+0x270/0x740 mm/slab.c:3661 kobject: 'tx-0' (000000007c536cdc): auto cleanup 'remove' event __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696 __kmalloc_reserve.isra.39+0x41/0xe0 net/core/skbuff.c:137 __alloc_skb+0x155/0x770 net/core/skbuff.c:205 kobject: 'tx-0' (000000007c536cdc): kobject_uevent_env kobject: 'tx-0' (000000007c536cdc): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/tx-0' alloc_skb include/linux/skbuff.h:997 [inline] __ip6_append_data.isra.47+0x2738/0x3530 net/ipv6/ip6_output.c:1425 kobject: 'tx-0' (000000007c536cdc): auto cleanup kobject_del kobject: 'tx-0' (000000007c536cdc): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000e234b2a1): kobject_cleanup, parent (null) ip6_append_data+0x1bc/0x2d0 net/ipv6/ip6_output.c:1587 rawv6_sendmsg+0x15a8/0x4630 net/ipv6/raw.c:926 kobject: 'queues' (00000000e234b2a1): calling ktype release kobject: 'queues' (00000000e234b2a1): kset_release kobject: 'queues': free name kobject: 'bcsf0' (00000000b41ac2a6): kobject_uevent_env inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 kobject: 'bcsf0' (00000000b41ac2a6): fill_kobj_path: path = '/devices/virtual/net/bcsf0' sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 __sys_sendto+0x3d7/0x670 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa6a1744c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fa6a1744c90 RCX: 0000000000457579 RDX: 000000000000ffa7 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000072bfa0 R08: 0000000020000180 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6a17456d4 R13: 00000000004c3935 R14: 00000000004d57d8 R15: 0000000000000005 kobject: 'loop2' (00000000ff357245): kobject_uevent_env kobject: 'bcsf0' (00000000b41ac2a6): kobject_cleanup, parent (null) kobject: 'bcsf0' (00000000b41ac2a6): calling ktype release kobject: 'bcsf0': free name kobject: 'bcsf0' (00000000b797315f): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'bcsf0' (00000000b797315f): kobject_uevent_env kobject: 'bcsf0' (00000000b797315f): fill_kobj_path: path = '/devices/virtual/net/bcsf0' kobject: 'loop2' (00000000ff357245): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'queues' (00000000127af254): kobject_add_internal: parent: 'bcsf0', set: '' kobject: 'loop5' (00000000049cab0f): kobject_uevent_env kobject: 'queues' (00000000127af254): kobject_uevent_env kobject: 'queues' (00000000127af254): kobject_uevent_env: filter function caused the event to drop! FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'rx-0' (00000000154a58c7): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop5' (00000000049cab0f): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'rx-0' (00000000154a58c7): kobject_uevent_env kobject: 'loop0' (000000009c6148fb): kobject_uevent_env kobject: 'rx-0' (00000000154a58c7): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/rx-0' kobject: 'loop0' (000000009c6148fb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'tx-0' (00000000e2b9de6c): kobject_add_internal: parent: 'queues', set: 'queues' CPU: 0 PID: 11895 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #243 kobject: 'tx-0' (00000000e2b9de6c): kobject_uevent_env 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 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 kobject: 'tx-0' (00000000e2b9de6c): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/tx-0' kobject: 'brif' (0000000054957a0f): kobject_add_internal: parent: 'bcsf0', set: '' __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node+0x26e/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:997 [inline] __ip6_append_data.isra.47+0x2738/0x3530 net/ipv6/ip6_output.c:1425 ip6_append_data+0x1bc/0x2d0 net/ipv6/ip6_output.c:1587 rawv6_sendmsg+0x15a8/0x4630 net/ipv6/raw.c:926 inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 __sys_sendto+0x3d7/0x670 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa6a1744c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fa6a1744c90 RCX: 0000000000457579 RDX: 000000000000ffa7 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000072bfa0 R08: 0000000020000180 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6a17456d4 R13: 00000000004c3935 R14: 00000000004d57d8 R15: 0000000000000005 kobject: 'loop1' (00000000fd19516b): kobject_uevent_env kobject: 'brif' (0000000054957a0f): kobject_cleanup, parent 00000000b797315f kobject: 'loop1' (00000000fd19516b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'brif' (0000000054957a0f): auto cleanup kobject_del kobject: 'brif' (0000000054957a0f): calling ktype release kobject: 'loop5' (00000000049cab0f): kobject_uevent_env kobject: (0000000054957a0f): dynamic_kobj_release kobject: 'loop5' (00000000049cab0f): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'brif': free name kobject: 'loop3' (0000000036c33e3a): kobject_uevent_env kobject: 'loop3' (0000000036c33e3a): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'rx-0' (00000000154a58c7): kobject_cleanup, parent 00000000127af254 kobject: 'rx-0' (00000000154a58c7): auto cleanup 'remove' event kobject: 'rx-0' (00000000154a58c7): kobject_uevent_env kobject: 'rx-0' (00000000154a58c7): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/rx-0' kobject: 'rx-0' (00000000154a58c7): auto cleanup kobject_del kobject: 'rx-0' (00000000154a58c7): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (00000000e2b9de6c): kobject_cleanup, parent 00000000127af254 kobject: 'tx-0' (00000000e2b9de6c): auto cleanup 'remove' event kobject: 'tx-0' (00000000e2b9de6c): kobject_uevent_env kobject: 'tx-0' (00000000e2b9de6c): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/tx-0' kobject: 'tx-0' (00000000e2b9de6c): auto cleanup kobject_del kobject: 'tx-0' (00000000e2b9de6c): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000127af254): kobject_cleanup, parent (null) kobject: 'queues' (00000000127af254): calling ktype release kobject: 'queues' (00000000127af254): kset_release kobject: 'queues': free name kobject: 'bcsf0' (00000000b797315f): kobject_uevent_env kobject: 'bcsf0' (00000000b797315f): fill_kobj_path: path = '/devices/virtual/net/bcsf0' kobject: 'loop2' (00000000ff357245): kobject_uevent_env kobject: 'loop2' (00000000ff357245): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'bcsf0' (00000000b797315f): kobject_cleanup, parent (null) kobject: 'bcsf0' (00000000b797315f): calling ktype release kobject: 'bcsf0': free name kobject: 'bcsf0' (0000000051ca1f4a): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'bcsf0' (0000000051ca1f4a): kobject_uevent_env kobject: 'bcsf0' (0000000051ca1f4a): fill_kobj_path: path = '/devices/virtual/net/bcsf0' kobject: 'loop4' (0000000045417e16): kobject_uevent_env kobject: 'queues' (0000000076c53870): kobject_add_internal: parent: 'bcsf0', set: '' kobject: 'loop4' (0000000045417e16): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'queues' (0000000076c53870): kobject_uevent_env kobject: 'loop1' (00000000fd19516b): kobject_uevent_env kobject: 'queues' (0000000076c53870): kobject_uevent_env: filter function caused the event to drop! kobject: 'loop1' (00000000fd19516b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'rx-0' (000000005b4af898): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (000000005b4af898): kobject_uevent_env kobject: 'rx-0' (000000005b4af898): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/rx-0' kobject: 'tx-0' (00000000076a38ec): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (00000000076a38ec): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'tx-0' (00000000076a38ec): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/tx-0' kobject: 'loop4' (0000000045417e16): kobject_uevent_env kobject: 'brif' (000000003f73ead5): kobject_add_internal: parent: 'bcsf0', set: '' CPU: 1 PID: 11913 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #243 kobject: 'brif' (000000003f73ead5): kobject_cleanup, parent 0000000051ca1f4a 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 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 kobject: 'brif' (000000003f73ead5): auto cleanup kobject_del kobject: 'brif' (000000003f73ead5): calling ktype release kobject: (000000003f73ead5): dynamic_kobj_release __should_failslab+0x124/0x180 mm/failslab.c:32 kobject: 'brif': free name should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node_trace+0x270/0x740 mm/slab.c:3661 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696 __kmalloc_reserve.isra.39+0x41/0xe0 net/core/skbuff.c:137 kobject: 'loop4' (0000000045417e16): fill_kobj_path: path = '/devices/virtual/block/loop4' __alloc_skb+0x155/0x770 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:997 [inline] __ip6_append_data.isra.47+0x2738/0x3530 net/ipv6/ip6_output.c:1425 ip6_append_data+0x1bc/0x2d0 net/ipv6/ip6_output.c:1587 rawv6_sendmsg+0x15a8/0x4630 net/ipv6/raw.c:926 inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 __sys_sendto+0x3d7/0x670 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa6a1765c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fa6a1765c90 RCX: 0000000000457579 RDX: 000000000000ffa7 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000072bf00 R08: 0000000020000180 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6a17666d4 R13: 00000000004c3935 R14: 00000000004d57d8 R15: 0000000000000005 kobject: 'loop1' (00000000fd19516b): kobject_uevent_env kobject: 'loop1' (00000000fd19516b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000049cab0f): kobject_uevent_env kobject: 'loop5' (00000000049cab0f): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'rx-0' (000000005b4af898): kobject_cleanup, parent 0000000076c53870 kobject: 'rx-0' (000000005b4af898): auto cleanup 'remove' event kobject: 'rx-0' (000000005b4af898): kobject_uevent_env kobject: 'rx-0' (000000005b4af898): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/rx-0' kobject: 'rx-0' (000000005b4af898): auto cleanup kobject_del kobject: 'rx-0' (000000005b4af898): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (00000000076a38ec): kobject_cleanup, parent 0000000076c53870 kobject: 'loop3' (0000000036c33e3a): kobject_uevent_env kobject: 'tx-0' (00000000076a38ec): auto cleanup 'remove' event kobject: 'tx-0' (00000000076a38ec): kobject_uevent_env kobject: 'tx-0' (00000000076a38ec): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/tx-0' kobject: 'tx-0' (00000000076a38ec): auto cleanup kobject_del kobject: 'tx-0' (00000000076a38ec): calling ktype release kobject: 'loop3' (0000000036c33e3a): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'tx-0': free name kobject: 'queues' (0000000076c53870): kobject_cleanup, parent (null) kobject: 'queues' (0000000076c53870): calling ktype release kobject: 'queues' (0000000076c53870): kset_release kobject: 'queues': free name kobject: 'bcsf0' (0000000051ca1f4a): kobject_uevent_env kobject: 'bcsf0' (0000000051ca1f4a): fill_kobj_path: path = '/devices/virtual/net/bcsf0' kobject: 'loop2' (00000000ff357245): kobject_uevent_env kobject: 'loop2' (00000000ff357245): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'bcsf0' (0000000051ca1f4a): kobject_cleanup, parent (null) kobject: 'bcsf0' (0000000051ca1f4a): calling ktype release kobject: 'bcsf0': free name kobject: 'loop0' (000000009c6148fb): kobject_uevent_env nla_parse: 8 callbacks suppressed netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. kobject: 'loop0' (000000009c6148fb): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor2'. kobject: 'loop4' (0000000045417e16): kobject_uevent_env netlink: 7 bytes leftover after parsing attributes in process `syz-executor2'. kobject: 'loop4' (0000000045417e16): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'bcsf0' (000000007ac9ec57): kobject_add_internal: parent: 'net', set: 'devices' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'bcsf0' (000000007ac9ec57): kobject_uevent_env CPU: 1 PID: 11947 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #243 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop1' (00000000fd19516b): kobject_uevent_env Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 kobject: 'bcsf0' (000000007ac9ec57): fill_kobj_path: path = '/devices/virtual/net/bcsf0' fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 kobject: 'queues' (00000000e702b580): kobject_add_internal: parent: 'bcsf0', set: '' kobject: 'loop1' (00000000fd19516b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000ff357245): kobject_uevent_env kobject: 'queues' (00000000e702b580): kobject_uevent_env __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 kobject: 'loop2' (00000000ff357245): fill_kobj_path: path = '/devices/virtual/block/loop2' slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node+0x26e/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:997 [inline] __ip6_append_data.isra.47+0x2738/0x3530 net/ipv6/ip6_output.c:1425 kobject: 'queues' (00000000e702b580): kobject_uevent_env: filter function caused the event to drop! ip6_append_data+0x1bc/0x2d0 net/ipv6/ip6_output.c:1587 kobject: 'rx-0' (0000000029eb2949): kobject_add_internal: parent: 'queues', set: 'queues' rawv6_sendmsg+0x15a8/0x4630 net/ipv6/raw.c:926 kobject: 'rx-0' (0000000029eb2949): kobject_uevent_env kobject: 'rx-0' (0000000029eb2949): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/rx-0' kobject: 'tx-0' (000000004de20f2f): kobject_add_internal: parent: 'queues', set: 'queues' inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 kobject: 'tx-0' (000000004de20f2f): kobject_uevent_env sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 __sys_sendto+0x3d7/0x670 net/socket.c:1788 kobject: 'tx-0' (000000004de20f2f): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/tx-0' kobject: 'brif' (0000000071883601): kobject_add_internal: parent: 'bcsf0', set: '' netlink: 7 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 netlink: 7 bytes leftover after parsing attributes in process `syz-executor1'. Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa6a1765c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fa6a1765c90 RCX: 0000000000457579 RDX: 000000000000ffa7 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000072bf00 R08: 0000000020000180 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6a17666d4 R13: 00000000004c3935 R14: 00000000004d57d8 R15: 0000000000000005 kobject: 'loop5' (00000000049cab0f): kobject_uevent_env kobject: 'brif' (0000000071883601): kobject_cleanup, parent 000000007ac9ec57 kobject: 'brif' (0000000071883601): auto cleanup kobject_del kobject: 'brif' (0000000071883601): calling ktype release kobject: (0000000071883601): dynamic_kobj_release kobject: 'brif': free name FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop5' (00000000049cab0f): fill_kobj_path: path = '/devices/virtual/block/loop5' CPU: 0 PID: 11975 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #243 kobject: 'loop1' (00000000fd19516b): kobject_uevent_env 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 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 kobject: 'loop1' (00000000fd19516b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (0000000036c33e3a): kobject_uevent_env kobject: 'loop3' (0000000036c33e3a): fill_kobj_path: path = '/devices/virtual/block/loop3' __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node_trace+0x270/0x740 mm/slab.c:3661 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696 __kmalloc_reserve.isra.39+0x41/0xe0 net/core/skbuff.c:137 __alloc_skb+0x155/0x770 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:997 [inline] __ip6_append_data.isra.47+0x2738/0x3530 net/ipv6/ip6_output.c:1425 ip6_append_data+0x1bc/0x2d0 net/ipv6/ip6_output.c:1587 rawv6_sendmsg+0x15a8/0x4630 net/ipv6/raw.c:926 inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 __sys_sendto+0x3d7/0x670 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa6a1744c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fa6a1744c90 RCX: 0000000000457579 RDX: 000000000000ffa7 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000072bfa0 R08: 0000000020000180 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6a17456d4 R13: 00000000004c3935 R14: 00000000004d57d8 R15: 0000000000000005 kobject: 'rx-0' (0000000029eb2949): kobject_cleanup, parent 00000000e702b580 kobject: 'rx-0' (0000000029eb2949): auto cleanup 'remove' event kobject: 'rx-0' (0000000029eb2949): kobject_uevent_env kobject: 'rx-0' (0000000029eb2949): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/rx-0' kobject: 'rx-0' (0000000029eb2949): auto cleanup kobject_del kobject: 'rx-0' (0000000029eb2949): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (000000004de20f2f): kobject_cleanup, parent 00000000e702b580 kobject: 'tx-0' (000000004de20f2f): auto cleanup 'remove' event kobject: 'tx-0' (000000004de20f2f): kobject_uevent_env kobject: 'tx-0' (000000004de20f2f): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/tx-0' kobject: 'tx-0' (000000004de20f2f): auto cleanup kobject_del kobject: 'tx-0' (000000004de20f2f): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000e702b580): kobject_cleanup, parent (null) kobject: 'queues' (00000000e702b580): calling ktype release kobject: 'queues' (00000000e702b580): kset_release kobject: 'queues': free name kobject: 'bcsf0' (000000007ac9ec57): kobject_uevent_env kobject: 'bcsf0' (000000007ac9ec57): fill_kobj_path: path = '/devices/virtual/net/bcsf0' netlink: 7 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor4'. kobject: 'loop4' (0000000045417e16): kobject_uevent_env kobject: 'loop4' (0000000045417e16): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'bcsf0' (000000007ac9ec57): kobject_cleanup, parent (null) kobject: 'loop1' (00000000fd19516b): kobject_uevent_env kobject: 'bcsf0' (000000007ac9ec57): calling ktype release kobject: 'loop1' (00000000fd19516b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'bcsf0': free name kobject: 'loop5' (00000000049cab0f): kobject_uevent_env kobject: 'loop5' (00000000049cab0f): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000ff357245): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop2' (00000000ff357245): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000009c6148fb): kobject_uevent_env CPU: 1 PID: 11991 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #243 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 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 kobject: 'bcsf0' (00000000995c9386): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'bcsf0' (00000000995c9386): kobject_uevent_env kobject: 'loop0' (000000009c6148fb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'bcsf0' (00000000995c9386): fill_kobj_path: path = '/devices/virtual/net/bcsf0' kobject: 'loop0' (000000009c6148fb): kobject_uevent_env kobject: 'loop0' (000000009c6148fb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'queues' (000000003b934a7f): kobject_add_internal: parent: 'bcsf0', set: '' __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node+0x26e/0x730 mm/slab.c:3642 kobject: 'queues' (000000003b934a7f): kobject_uevent_env __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:997 [inline] __ip6_append_data.isra.47+0x2738/0x3530 net/ipv6/ip6_output.c:1425 kobject: 'loop4' (0000000045417e16): kobject_uevent_env kobject: 'queues' (000000003b934a7f): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (00000000bc1f9c2c): kobject_add_internal: parent: 'queues', set: 'queues' ip6_append_data+0x1bc/0x2d0 net/ipv6/ip6_output.c:1587 rawv6_sendmsg+0x15a8/0x4630 net/ipv6/raw.c:926 kobject: 'loop4' (0000000045417e16): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000fd19516b): kobject_uevent_env kobject: 'rx-0' (00000000bc1f9c2c): kobject_uevent_env kobject: 'rx-0' (00000000bc1f9c2c): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/rx-0' inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 kobject: 'loop1' (00000000fd19516b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'tx-0' (00000000673fd3e8): kobject_add_internal: parent: 'queues', set: 'queues' sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 __sys_sendto+0x3d7/0x670 net/socket.c:1788 kobject: 'tx-0' (00000000673fd3e8): kobject_uevent_env kobject: 'tx-0' (00000000673fd3e8): fill_kobj_path: path = '/devices/virtual/net/bcsf0/queues/tx-0' __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 kobject: 'brif' (00000000b94ae1ca): kobject_add_internal: parent: 'bcsf0', set: '' kobject: 'loop4' (0000000045417e16): kobject_uevent_env entry_SYSCALL_64_after_hwframe+0x49/0xbe kobject: 'loop4' (0000000045417e16): fill_kobj_path: path = '/devices/virtual/block/loop4' RIP: 0033:0x457579 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa6a1765c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fa6a1765c90 RCX: 0000000000457579 RDX: 000000000000ffa7 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000072bf00 R08: 0000000020000180 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6a17666d4 R13: 00000000004c3935 R14: 00000000004d57d8 R15: 0000000000000005 kobject: 'loop2' (00000000ff357245): kobject_uevent_env kobject: 'loop2' (00000000ff357245): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000049cab0f): kobject_uevent_env kobject: 'loop5' (00000000049cab0f): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000fd19516b): kobject_uevent_env kobject: 'brif' (00000000b94ae1ca): kobject_cleanup, parent 00000000995c9386 kobject: 'loop1' (00000000fd19516b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'brif' (00000000b94ae1ca): auto cleanup kobject_del FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop3' (0000000036c33e3a): kobject_uevent_env kobject: 'brif' (00000000b94ae1ca): calling ktype release kobject: (00000000b94ae1ca): dynamic_kobj_release