netlink: 'syz-executor2': attribute type 13 has an invalid length. netlink: 'syz-executor2': attribute type 13 has an invalid length. ====================================================== WARNING: possible circular locking dependency detected 4.19.0-rc5+ #242 Not tainted ------------------------------------------------------ syz-executor2/9464 is trying to acquire lock: 0000000033f0d94c ((wq_completion)bond_dev->name){+.+.}, at: flush_workqueue+0x2db/0x1e10 kernel/workqueue.c:2652 but task is already holding lock: 0000000085353477 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] 0000000085353477 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40e/0xc20 net/core/rtnetlink.c:4727 which lock already depends on the new lock. 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 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 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 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 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 -> #0 ((wq_completion)bond_dev->name){+.+.}: 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 ---- ---- lock(rtnl_mutex); lock((work_completion)(&(&nnw->work)->work)); lock(rtnl_mutex); lock((wq_completion)bond_dev->name); *** DEADLOCK *** 1 lock held by syz-executor2/9464: #0: 0000000085353477 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 0000000085353477 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40e/0xc20 net/core/rtnetlink.c:4727 stack backtrace: CPU: 0 PID: 9464 Comm: syz-executor2 Not tainted 4.19.0-rc5+ #242 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 kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env 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 kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3900 flush_workqueue+0x30a/0x1e10 kernel/workqueue.c:2655 kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env drain_workqueue+0x2a9/0x640 kernel/workqueue.c:2820 kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' 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:00007ff4c5e1ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff4c5e1b6d4 R13: 00000000004c38b9 R14: 00000000004d5700 R15: 00000000ffffffff kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'gre0' (00000000f442ef9a): kobject_cleanup, parent (null) kobject: 'gre0' (00000000f442ef9a): auto cleanup 'remove' event kobject: 'gre0' (00000000f442ef9a): kobject_uevent_env kobject: 'gre0' (00000000f442ef9a): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'gre0' (00000000f442ef9a): calling ktype release kobject: 'gre0': free name kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'rx-0' (00000000c37ab256): kobject_cleanup, parent 0000000043c5339c kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'rx-0' (00000000c37ab256): auto cleanup 'remove' event kobject: 'rx-0' (00000000c37ab256): kobject_uevent_env kobject: 'rx-0' (00000000c37ab256): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'rx-0' (00000000c37ab256): auto cleanup kobject_del kobject: 'rx-0' (00000000c37ab256): calling ktype release kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'rx-0': free name kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'tx-0' (00000000ad501fdb): kobject_cleanup, parent 0000000043c5339c kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'tx-0' (00000000ad501fdb): auto cleanup 'remove' event kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'tx-0' (00000000ad501fdb): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'tx-0' (00000000ad501fdb): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'tx-0' (00000000ad501fdb): auto cleanup kobject_del kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'tx-0' (00000000ad501fdb): calling ktype release kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'tx-0': free name kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'queues' (0000000043c5339c): kobject_cleanup, parent (null) kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'queues' (0000000043c5339c): calling ktype release kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'queues' (0000000043c5339c): kset_release kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'queues': free name kobject: 'tunl0' (0000000089da53c6): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'tunl0' (0000000089da53c6): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' netlink: 'syz-executor1': attribute type 3 has an invalid length. kobject: 'loop5' (0000000012f2be33): kobject_uevent_env netlink: 'syz-executor1': attribute type 3 has an invalid length. kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'tunl0' (0000000089da53c6): kobject_cleanup, parent (null) kobject: 'tunl0' (0000000089da53c6): auto cleanup 'remove' event kobject: 'tunl0' (0000000089da53c6): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'tunl0' (0000000089da53c6): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' netlink: 'syz-executor1': attribute type 3 has an invalid length. kobject: 'tunl0' (0000000089da53c6): calling ktype release kobject: 'tunl0': free name kobject: 'loop4' (00000000324f83f1): kobject_uevent_env netlink: 'syz-executor1': attribute type 3 has an invalid length. kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rx-0' (00000000e9b9fafb): kobject_cleanup, parent 000000008908a1ac kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'rx-0' (00000000e9b9fafb): auto cleanup 'remove' event kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'rx-0' (00000000e9b9fafb): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'rx-0' (00000000e9b9fafb): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'rx-0' (00000000e9b9fafb): auto cleanup kobject_del kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'rx-0' (00000000e9b9fafb): calling ktype release kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rx-0': free name kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'tx-0' (00000000f3880055): kobject_cleanup, parent 000000008908a1ac kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'tx-0' (00000000f3880055): auto cleanup 'remove' event kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'tx-0' (00000000f3880055): kobject_uevent_env kobject: 'tx-0' (00000000f3880055): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'tx-0' (00000000f3880055): auto cleanup kobject_del kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'tx-0' (00000000f3880055): calling ktype release kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'tx-0': free name kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'queues' (000000008908a1ac): kobject_cleanup, parent (null) kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'queues' (000000008908a1ac): calling ktype release kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'queues' (000000008908a1ac): kset_release kobject: 'queues': free name kobject: 'lo' (000000009edd3434): kobject_uevent_env kobject: 'lo' (000000009edd3434): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'lo' (000000009edd3434): kobject_cleanup, parent (null) kobject: 'lo' (000000009edd3434): auto cleanup 'remove' event kobject: 'lo' (000000009edd3434): kobject_uevent_env kobject: 'lo' (000000009edd3434): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'lo' (000000009edd3434): calling ktype release kobject: 'lo': free name kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env sctp: [Deprecated]: syz-executor1 (pid 9614) Use of int in maxseg socket option. Use struct sctp_assoc_value instead kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' CPU: 0 PID: 9617 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #242 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop4' (00000000324f83f1): kobject_uevent_env Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' __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 mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc_track_caller+0x2d0/0x750 mm/slab.c:3733 memdup_user+0x2c/0xa0 mm/util.c:160 map_update_elem+0x24a/0xd50 kernel/bpf/syscall.c:769 __do_sys_bpf kernel/bpf/syscall.c:2370 [inline] __se_sys_bpf kernel/bpf/syscall.c:2341 [inline] __x64_sys_bpf+0x32d/0x510 kernel/bpf/syscall.c:2341 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:00007faf4b20bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007faf4b20bc90 RCX: 0000000000457579 RDX: 0000000000000018 RSI: 0000000020000140 RDI: 0000000000000002 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007faf4b20c6d4 R13: 00000000004bd926 R14: 00000000004cc298 R15: 0000000000000004 kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env sctp: [Deprecated]: syz-executor1 (pid 9614) Use of int in maxseg socket option. Use struct sctp_assoc_value instead kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000080576286): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 netlink: 'syz-executor0': attribute type 9 has an invalid length. kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' CPU: 0 PID: 9636 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #242 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 sctp: [Deprecated]: syz-executor1 (pid 9638) Use of int in maxseg socket option. Use struct sctp_assoc_value instead kobject: 'ip6tnl1' (00000000e2315050): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'ip6tnl1' (00000000e2315050): kobject_uevent_env kobject: 'ip6tnl1' (00000000e2315050): fill_kobj_path: path = '/devices/virtual/net/ip6tnl1' __should_failslab+0x124/0x180 mm/failslab.c:32 kobject: 'queues' (00000000bde3706f): kobject_add_internal: parent: 'ip6tnl1', set: '' should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x2d4/0x760 mm/slab.c:3727 kmalloc include/linux/slab.h:518 [inline] map_update_elem+0x325/0xd50 kernel/bpf/syscall.c:783 __do_sys_bpf kernel/bpf/syscall.c:2370 [inline] __se_sys_bpf kernel/bpf/syscall.c:2341 [inline] __x64_sys_bpf+0x32d/0x510 kernel/bpf/syscall.c:2341 kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'queues' (00000000bde3706f): kobject_uevent_env kobject: 'queues' (00000000bde3706f): kobject_uevent_env: filter function caused the event to drop! 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:00007faf4b20bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007faf4b20bc90 RCX: 0000000000457579 RDX: 0000000000000018 RSI: 0000000020000140 RDI: 0000000000000002 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 kobject: 'rx-0' (00000000e0c95b46): kobject_add_internal: parent: 'queues', set: 'queues' R10: 0000000000000000 R11: 0000000000000246 R12: 00007faf4b20c6d4 R13: 00000000004bd926 R14: 00000000004cc298 R15: 0000000000000004 kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'rx-0' (00000000e0c95b46): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'rx-0' (00000000e0c95b46): fill_kobj_path: path = '/devices/virtual/net/ip6tnl1/queues/rx-0' kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' CPU: 1 PID: 9654 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #242 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' (00000000d02c6709): 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' (00000000d02c6709): kobject_uevent_env kobject: 'tx-0' (00000000d02c6709): fill_kobj_path: path = '/devices/virtual/net/ip6tnl1/queues/tx-0' netlink: 'syz-executor0': attribute type 9 has an invalid length. kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' should_fail_alloc_page mm/page_alloc.c:3057 [inline] prepare_alloc_pages mm/page_alloc.c:4326 [inline] __alloc_pages_nodemask+0x34b/0xde0 mm/page_alloc.c:4364 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] pte_alloc_one+0x1b/0x1a0 arch/x86/mm/pgtable.c:35 do_huge_pmd_anonymous_page+0xba9/0x17e0 mm/huge_memory.c:686 create_huge_pmd mm/memory.c:3874 [inline] __handle_mm_fault+0x3880/0x53e0 mm/memory.c:4078 handle_mm_fault+0x54f/0xc70 mm/memory.c:4144 __do_page_fault+0x67d/0xed0 arch/x86/mm/fault.c:1395 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1470 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1161 RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:180 Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 RSP: 0018:ffff8801c04a7ca8 EFLAGS: 00010202 RAX: 0000000000000004 RBX: 0000000000200004 RCX: 0000000000000104 RDX: 0000000000200004 RSI: 0000000020200000 RDI: ffff88018f5fff00 RBP: ffff8801c04a7ce0 R08: ffffed0031ec0001 R09: ffffed0031ec0001 R10: ffffed0031ec0000 R11: 0000000000000003 R12: 0000000020200104 R13: 0000000020000100 R14: ffff88018f400000 R15: 00007ffffffff000 copy_from_user include/linux/uaccess.h:147 [inline] map_update_elem+0x35f/0xd50 kernel/bpf/syscall.c:788 __do_sys_bpf kernel/bpf/syscall.c:2370 [inline] __se_sys_bpf kernel/bpf/syscall.c:2341 [inline] __x64_sys_bpf+0x32d/0x510 kernel/bpf/syscall.c:2341 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:00007faf4b20bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007faf4b20bc90 RCX: 0000000000457579 RDX: 0000000000000018 RSI: 0000000020000140 RDI: 0000000000000002 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007faf4b20c6d4 R13: 00000000004bd926 R14: 00000000004cc298 R15: 0000000000000004 kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' IPVS: length: 196 != 24 kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' IPVS: length: 196 != 24 kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 9679 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #242 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 __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 mm/slab.c:3378 [inline] kmem_cache_alloc+0x2be/0x730 mm/slab.c:3552 ptlock_alloc+0x20/0x80 mm/memory.c:4773 ptlock_init include/linux/mm.h:1869 [inline] pgtable_page_ctor include/linux/mm.h:1903 [inline] pte_alloc_one+0x6b/0x1a0 arch/x86/mm/pgtable.c:38 do_huge_pmd_anonymous_page+0xba9/0x17e0 mm/huge_memory.c:686 create_huge_pmd mm/memory.c:3874 [inline] __handle_mm_fault+0x3880/0x53e0 mm/memory.c:4078 handle_mm_fault+0x54f/0xc70 mm/memory.c:4144 __do_page_fault+0x67d/0xed0 arch/x86/mm/fault.c:1395 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1470 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1161 RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:180 Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 RSP: 0018:ffff88019acc7ca8 EFLAGS: 00010202 RAX: 0000000000000004 RBX: 0000000000200004 RCX: 0000000000000104 RDX: 0000000000200004 RSI: 0000000020200000 RDI: ffff88018f9fff00 RBP: ffff88019acc7ce0 R08: ffffed0031f40001 R09: ffffed0031f40001 R10: ffffed0031f40000 R11: 0000000000000003 R12: 0000000020200104 R13: 0000000020000100 R14: ffff88018f800000 R15: 00007ffffffff000 copy_from_user include/linux/uaccess.h:147 [inline] map_update_elem+0x35f/0xd50 kernel/bpf/syscall.c:788 __do_sys_bpf kernel/bpf/syscall.c:2370 [inline] __se_sys_bpf kernel/bpf/syscall.c:2341 [inline] __x64_sys_bpf+0x32d/0x510 kernel/bpf/syscall.c:2341 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:00007faf4b20bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007faf4b20bc90 RCX: 0000000000457579 RDX: 0000000000000018 RSI: 0000000020000140 RDI: 0000000000000002 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007faf4b20c6d4 R13: 00000000004bd926 R14: 00000000004cc298 R15: 0000000000000004 kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' netlink: 4 bytes leftover after parsing attributes in process `syz-executor1'. kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 4 bytes leftover after parsing attributes in process `syz-executor1'. kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env netlink: 4 bytes leftover after parsing attributes in process `syz-executor1'. kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env netlink: 'syz-executor2': attribute type 13 has an invalid length. netlink: 4 bytes leftover after parsing attributes in process `syz-executor1'. kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 'syz-executor2': attribute type 13 has an invalid length. kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' netlink: 4 bytes leftover after parsing attributes in process `syz-executor1'. kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env netlink: 4 bytes leftover after parsing attributes in process `syz-executor1'. kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' netlink: 20 bytes leftover after parsing attributes in process `syz-executor4'. kobject: 'loop5' (0000000012f2be33): kobject_uevent_env netlink: 20 bytes leftover after parsing attributes in process `syz-executor4'. kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 netlink: 4 bytes leftover after parsing attributes in process `syz-executor1'. CPU: 1 PID: 9977 Comm: syz-executor3 Not tainted 4.19.0-rc5+ #242 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 __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 mm/slab.c:3378 [inline] kmem_cache_alloc_trace+0x2d7/0x750 mm/slab.c:3618 kmalloc include/linux/slab.h:513 [inline] kzalloc include/linux/slab.h:707 [inline] tcp_sendmsg_fastopen net/ipv4/tcp.c:1144 [inline] tcp_sendmsg_locked+0x32f9/0x3f00 net/ipv4/tcp.c:1208 tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1443 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:00007fadd2af1c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fadd2af1c90 RCX: 0000000000457579 RDX: 000000000000d14b RSI: 0000000020000100 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000020b63fe4 R09: 000000000000001c R10: 0000000020000004 R11: 0000000000000246 R12: 00007fadd2af26d4 R13: 00000000004c3935 R14: 00000000004d57d8 R15: 0000000000000004 kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' netlink: 4 bytes leftover after parsing attributes in process `syz-executor1'. kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000080576286): kobject_uevent_env kobject: 'loop2' (0000000080576286): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000fe6c175b): kobject_uevent_env kobject: 'loop1' (00000000fe6c175b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000e8da6f58): kobject_uevent_env kobject: 'loop0' (00000000e8da6f58): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000012f2be33): kobject_uevent_env kobject: 'loop5' (0000000012f2be33): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000e7f88c23): kobject_uevent_env kobject: 'loop3' (00000000e7f88c23): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000324f83f1): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (00000000324f83f1): fill_kobj_path: path = '/devices/virtual/block/loop4' CPU: 1 PID: 10116 Comm: syz-executor2 Not tainted 4.19.0-rc5+ #242 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 __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 mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc_track_caller+0x2d0/0x750 mm/slab.c:3733 memdup_user+0x2c/0xa0 mm/util.c:160 map_get_next_key+0x51f/0x640 kernel/bpf/syscall.c:919 __do_sys_bpf kernel/bpf/syscall.c:2376 [inline] __se_sys_bpf kernel/bpf/syscall.c:2341 [inline] __x64_sys_bpf+0x357/0x510 kernel/bpf/syscall.c:2341 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290