IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready 8021q: adding VLAN 0 to HW filter on device batadv0 8021q: adding VLAN 0 to HW filter on device batadv0 ===================================================== WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected 4.19.57 #30 Not tainted ----------------------------------------------------- syz-executor.3/8131 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: 00000000110d9ec2 (&ctx->fd_wqh){....}, at: spin_lock include/linux/spinlock.h:329 [inline] 00000000110d9ec2 (&ctx->fd_wqh){....}, at: aio_poll fs/aio.c:1741 [inline] 00000000110d9ec2 (&ctx->fd_wqh){....}, at: __io_submit_one fs/aio.c:1849 [inline] 00000000110d9ec2 (&ctx->fd_wqh){....}, at: io_submit_one+0xef2/0x2eb0 fs/aio.c:1885 and this task is already holding: 000000005f298072 (&(&ctx->ctx_lock)->rlock){..-.}, at: spin_lock_irq include/linux/spinlock.h:354 [inline] 000000005f298072 (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll fs/aio.c:1739 [inline] 000000005f298072 (&(&ctx->ctx_lock)->rlock){..-.}, at: __io_submit_one fs/aio.c:1849 [inline] 000000005f298072 (&(&ctx->ctx_lock)->rlock){..-.}, at: io_submit_one+0xead/0x2eb0 fs/aio.c:1885 which would create a new lock dependency: (&(&ctx->ctx_lock)->rlock){..-.} -> (&ctx->fd_wqh){....} but this new dependency connects a SOFTIRQ-irq-safe lock: (&(&ctx->ctx_lock)->rlock){..-.} ... which became SOFTIRQ-irq-safe at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] free_ioctx_users+0x2d/0x490 fs/aio.c:614 percpu_ref_put_many include/linux/percpu-refcount.h:284 [inline] percpu_ref_put include/linux/percpu-refcount.h:300 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x407/0x540 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:236 [inline] rcu_do_batch kernel/rcu/tree.c:2584 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881 __do_softirq+0x25c/0x921 kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1067 do_softirq.part.0+0x11a/0x170 kernel/softirq.c:336 do_softirq kernel/softirq.c:328 [inline] __local_bh_enable_ip+0x211/0x270 kernel/softirq.c:189 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline] _raw_spin_unlock_bh+0x31/0x40 kernel/locking/spinlock.c:200 spin_unlock_bh include/linux/spinlock.h:374 [inline] __ip6_ins_rt+0x5f/0x80 net/ipv6/route.c:1165 ip6_route_add+0x5a/0xd0 net/ipv6/route.c:3210 addrconf_prefix_route.isra.0+0x358/0x4f0 net/ipv6/addrconf.c:2346 addrconf_add_linklocal+0x284/0x3c0 net/ipv6/addrconf.c:3137 addrconf_addr_gen+0x34d/0x3a0 net/ipv6/addrconf.c:3262 addrconf_dev_config+0x1ea/0x2c0 net/ipv6/addrconf.c:3305 addrconf_notify+0x393/0x22e0 net/ipv6/addrconf.c:3536 notifier_call_chain+0xc2/0x230 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1747 call_netdevice_notifiers net/core/dev.c:1765 [inline] __dev_notify_flags+0x121/0x2c0 net/core/dev.c:7536 dev_change_flags+0x101/0x150 net/core/dev.c:7572 do_setlink+0x1604/0x34c0 net/core/rtnetlink.c:2428 rtnl_newlink+0xbad/0x1610 net/core/rtnetlink.c:3047 rtnetlink_rcv_msg+0x463/0xb00 net/core/rtnetlink.c:4747 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4765 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x537/0x720 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 __sys_sendto+0x262/0x380 net/socket.c:1787 __do_sys_sendto net/socket.c:1799 [inline] __se_sys_sendto net/socket.c:1795 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1795 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe to a SOFTIRQ-irq-unsafe lock: (&ctx->fault_pending_wqh){+.+.} ... which became SOFTIRQ-irq-unsafe at: ... lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_release+0x4d6/0x720 fs/userfaultfd.c:922 __fput+0x2dd/0x8b0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x145/0x1c0 kernel/task_work.c:113 get_signal+0x1baa/0x1fc0 kernel/signal.c:2385 do_signal+0x95/0x1960 arch/x86/kernel/signal.c:821 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: &(&ctx->ctx_lock)->rlock --> &ctx->fd_wqh --> &ctx->fault_pending_wqh Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ctx->fault_pending_wqh); local_irq_disable(); lock(&(&ctx->ctx_lock)->rlock); lock(&ctx->fd_wqh); lock(&(&ctx->ctx_lock)->rlock); *** DEADLOCK *** 1 lock held by syz-executor.3/8131: #0: 000000005f298072 (&(&ctx->ctx_lock)->rlock){..-.}, at: spin_lock_irq include/linux/spinlock.h:354 [inline] #0: 000000005f298072 (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll fs/aio.c:1739 [inline] #0: 000000005f298072 (&(&ctx->ctx_lock)->rlock){..-.}, at: __io_submit_one fs/aio.c:1849 [inline] #0: 000000005f298072 (&(&ctx->ctx_lock)->rlock){..-.}, at: io_submit_one+0xead/0x2eb0 fs/aio.c:1885 the dependencies between SOFTIRQ-irq-safe lock and the holding lock: -> (&(&ctx->ctx_lock)->rlock){..-.} ops: 33 { IN-SOFTIRQ-W at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] free_ioctx_users+0x2d/0x490 fs/aio.c:614 percpu_ref_put_many include/linux/percpu-refcount.h:284 [inline] percpu_ref_put include/linux/percpu-refcount.h:300 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x407/0x540 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:236 [inline] rcu_do_batch kernel/rcu/tree.c:2584 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881 __do_softirq+0x25c/0x921 kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1067 do_softirq.part.0+0x11a/0x170 kernel/softirq.c:336 do_softirq kernel/softirq.c:328 [inline] __local_bh_enable_ip+0x211/0x270 kernel/softirq.c:189 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline] _raw_spin_unlock_bh+0x31/0x40 kernel/locking/spinlock.c:200 spin_unlock_bh include/linux/spinlock.h:374 [inline] __ip6_ins_rt+0x5f/0x80 net/ipv6/route.c:1165 ip6_route_add+0x5a/0xd0 net/ipv6/route.c:3210 addrconf_prefix_route.isra.0+0x358/0x4f0 net/ipv6/addrconf.c:2346 addrconf_add_linklocal+0x284/0x3c0 net/ipv6/addrconf.c:3137 addrconf_addr_gen+0x34d/0x3a0 net/ipv6/addrconf.c:3262 addrconf_dev_config+0x1ea/0x2c0 net/ipv6/addrconf.c:3305 addrconf_notify+0x393/0x22e0 net/ipv6/addrconf.c:3536 notifier_call_chain+0xc2/0x230 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1747 call_netdevice_notifiers net/core/dev.c:1765 [inline] __dev_notify_flags+0x121/0x2c0 net/core/dev.c:7536 dev_change_flags+0x101/0x150 net/core/dev.c:7572 do_setlink+0x1604/0x34c0 net/core/rtnetlink.c:2428 rtnl_newlink+0xbad/0x1610 net/core/rtnetlink.c:3047 rtnetlink_rcv_msg+0x463/0xb00 net/core/rtnetlink.c:4747 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4765 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x537/0x720 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 __sys_sendto+0x262/0x380 net/socket.c:1787 __do_sys_sendto net/socket.c:1799 [inline] __se_sys_sendto net/socket.c:1795 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1795 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe INITIAL USE at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] free_ioctx_users+0x2d/0x490 fs/aio.c:614 percpu_ref_put_many include/linux/percpu-refcount.h:284 [inline] percpu_ref_put include/linux/percpu-refcount.h:300 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x407/0x540 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:236 [inline] rcu_do_batch kernel/rcu/tree.c:2584 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881 __do_softirq+0x25c/0x921 kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1067 do_softirq.part.0+0x11a/0x170 kernel/softirq.c:336 do_softirq kernel/softirq.c:328 [inline] __local_bh_enable_ip+0x211/0x270 kernel/softirq.c:189 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline] _raw_spin_unlock_bh+0x31/0x40 kernel/locking/spinlock.c:200 spin_unlock_bh include/linux/spinlock.h:374 [inline] __ip6_ins_rt+0x5f/0x80 net/ipv6/route.c:1165 ip6_route_add+0x5a/0xd0 net/ipv6/route.c:3210 addrconf_prefix_route.isra.0+0x358/0x4f0 net/ipv6/addrconf.c:2346 addrconf_add_linklocal+0x284/0x3c0 net/ipv6/addrconf.c:3137 addrconf_addr_gen+0x34d/0x3a0 net/ipv6/addrconf.c:3262 addrconf_dev_config+0x1ea/0x2c0 net/ipv6/addrconf.c:3305 addrconf_notify+0x393/0x22e0 net/ipv6/addrconf.c:3536 notifier_call_chain+0xc2/0x230 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1747 call_netdevice_notifiers net/core/dev.c:1765 [inline] __dev_notify_flags+0x121/0x2c0 net/core/dev.c:7536 dev_change_flags+0x101/0x150 net/core/dev.c:7572 do_setlink+0x1604/0x34c0 net/core/rtnetlink.c:2428 rtnl_newlink+0xbad/0x1610 net/core/rtnetlink.c:3047 rtnetlink_rcv_msg+0x463/0xb00 net/core/rtnetlink.c:4747 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4765 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x537/0x720 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 __sys_sendto+0x262/0x380 net/socket.c:1787 __do_sys_sendto net/socket.c:1799 [inline] __se_sys_sendto net/socket.c:1795 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1795 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe } ... key at: [] __key.50195+0x0/0x40 ... acquired at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] aio_poll fs/aio.c:1741 [inline] __io_submit_one fs/aio.c:1849 [inline] io_submit_one+0xef2/0x2eb0 fs/aio.c:1885 __do_sys_io_submit fs/aio.c:1929 [inline] __se_sys_io_submit fs/aio.c:1900 [inline] __x64_sys_io_submit+0x1aa/0x520 fs/aio.c:1900 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe the dependencies between the lock to be acquired and SOFTIRQ-irq-unsafe lock: -> (&ctx->fault_pending_wqh){+.+.} ops: 182 { HARDIRQ-ON-W at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_release+0x4d6/0x720 fs/userfaultfd.c:922 __fput+0x2dd/0x8b0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x145/0x1c0 kernel/task_work.c:113 get_signal+0x1baa/0x1fc0 kernel/signal.c:2385 do_signal+0x95/0x1960 arch/x86/kernel/signal.c:821 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe SOFTIRQ-ON-W at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_release+0x4d6/0x720 fs/userfaultfd.c:922 __fput+0x2dd/0x8b0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x145/0x1c0 kernel/task_work.c:113 get_signal+0x1baa/0x1fc0 kernel/signal.c:2385 do_signal+0x95/0x1960 arch/x86/kernel/signal.c:821 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe INITIAL USE at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline] userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe } ... key at: [] __key.43729+0x0/0x40 ... acquired at: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline] userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> (&ctx->fd_wqh){....} ops: 184 { INITIAL USE at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] userfaultfd_ctx_read fs/userfaultfd.c:1042 [inline] userfaultfd_read+0x262/0x18c0 fs/userfaultfd.c:1204 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe } ... key at: [] __key.43732+0x0/0x40 ... acquired at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] aio_poll fs/aio.c:1741 [inline] __io_submit_one fs/aio.c:1849 [inline] io_submit_one+0xef2/0x2eb0 fs/aio.c:1885 __do_sys_io_submit fs/aio.c:1929 [inline] __se_sys_io_submit fs/aio.c:1900 [inline] __x64_sys_io_submit+0x1aa/0x520 fs/aio.c:1900 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe stack backtrace: CPU: 0 PID: 8131 Comm: syz-executor.3 Not tainted 4.19.57 #30 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 print_bad_irq_dependency kernel/locking/lockdep.c:1568 [inline] check_usage.cold+0x611/0x946 kernel/locking/lockdep.c:1600 check_irq_usage kernel/locking/lockdep.c:1656 [inline] check_prev_add_irq kernel/locking/lockdep_states.h:8 [inline] check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1974 [inline] validate_chain kernel/locking/lockdep.c:2415 [inline] __lock_acquire+0x1ee4/0x48f0 kernel/locking/lockdep.c:3411 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] aio_poll fs/aio.c:1741 [inline] __io_submit_one fs/aio.c:1849 [inline] io_submit_one+0xef2/0x2eb0 fs/aio.c:1885 __do_sys_io_submit fs/aio.c:1929 [inline] __se_sys_io_submit fs/aio.c:1900 [inline] __x64_sys_io_submit+0x1aa/0x520 fs/aio.c:1900 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4597c9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2276776c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004597c9 RDX: 0000000020000000 RSI: 0000000000000001 RDI: 00007f2276778000 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f22767776d4 R13: 00000000004c0b97 R14: 00000000004d3908 R15: 00000000ffffffff kobject: 'loop3' (00000000cca82e5a): kobject_uevent_env kobject: 'loop3' (00000000cca82e5a): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000c9df48b7): kobject_uevent_env kobject: 'loop2' (00000000c9df48b7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000ff887faa): kobject_uevent_env kobject: 'loop1' (00000000ff887faa): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000dcf095d7): kobject_uevent_env kobject: 'loop4' (00000000dcf095d7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000000e2a3a1d): kobject_uevent_env kobject: 'loop5' (000000000e2a3a1d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000003e3fdb66): kobject_uevent_env kobject: 'loop0' (000000003e3fdb66): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000cca82e5a): kobject_uevent_env kobject: 'loop3' (00000000cca82e5a): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000c9df48b7): kobject_uevent_env kobject: 'loop2' (00000000c9df48b7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000000e2a3a1d): kobject_uevent_env kobject: 'loop5' (000000000e2a3a1d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000dcf095d7): kobject_uevent_env kobject: 'loop4' (00000000dcf095d7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000ff887faa): kobject_uevent_env kobject: 'loop1' (00000000ff887faa): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000003e3fdb66): kobject_uevent_env kobject: 'loop0' (000000003e3fdb66): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000c9df48b7): kobject_uevent_env kobject: 'loop2' (00000000c9df48b7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000000e2a3a1d): kobject_uevent_env kobject: 'loop5' (000000000e2a3a1d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000cca82e5a): kobject_uevent_env kobject: 'loop3' (00000000cca82e5a): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000dcf095d7): kobject_uevent_env kobject: 'loop4' (00000000dcf095d7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000ff887faa): kobject_uevent_env kobject: 'loop1' (00000000ff887faa): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000003e3fdb66): kobject_uevent_env kobject: 'loop0' (000000003e3fdb66): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000c9df48b7): kobject_uevent_env kobject: 'loop2' (00000000c9df48b7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000000e2a3a1d): kobject_uevent_env kobject: 'loop5' (000000000e2a3a1d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000cca82e5a): kobject_uevent_env kobject: 'loop3' (00000000cca82e5a): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000ff887faa): kobject_uevent_env kobject: 'loop1' (00000000ff887faa): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000dcf095d7): kobject_uevent_env kobject: 'loop4' (00000000dcf095d7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003e3fdb66): kobject_uevent_env kobject: 'loop0' (000000003e3fdb66): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000c9df48b7): kobject_uevent_env kobject: 'loop2' (00000000c9df48b7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000000e2a3a1d): kobject_uevent_env kobject: 'loop5' (000000000e2a3a1d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000cca82e5a): kobject_uevent_env kobject: 'loop3' (00000000cca82e5a): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000ff887faa): kobject_uevent_env kobject: 'loop1' (00000000ff887faa): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000dcf095d7): kobject_uevent_env kobject: 'loop4' (00000000dcf095d7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003e3fdb66): kobject_uevent_env kobject: 'loop0' (000000003e3fdb66): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000c9df48b7): kobject_uevent_env kobject: 'loop2' (00000000c9df48b7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000000e2a3a1d): kobject_uevent_env kobject: 'loop5' (000000000e2a3a1d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000ff887faa): kobject_uevent_env kobject: 'loop1' (00000000ff887faa): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000cca82e5a): kobject_uevent_env kobject: 'loop3' (00000000cca82e5a): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000dcf095d7): kobject_uevent_env kobject: 'loop4' (00000000dcf095d7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003e3fdb66): kobject_uevent_env kobject: 'loop0' (000000003e3fdb66): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000c9df48b7): kobject_uevent_env kobject: 'loop2' (00000000c9df48b7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000cca82e5a): kobject_uevent_env kobject: 'loop3' (00000000cca82e5a): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000000e2a3a1d): kobject_uevent_env kobject: 'loop5' (000000000e2a3a1d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000ff887faa): kobject_uevent_env kobject: 'loop1' (00000000ff887faa): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000dcf095d7): kobject_uevent_env kobject: 'loop4' (00000000dcf095d7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003e3fdb66): kobject_uevent_env kobject: 'loop0' (000000003e3fdb66): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000c9df48b7): kobject_uevent_env kobject: 'loop2' (00000000c9df48b7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000cca82e5a): kobject_uevent_env kobject: 'loop3' (00000000cca82e5a): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000000e2a3a1d): kobject_uevent_env kobject: 'loop5' (000000000e2a3a1d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000ff887faa): kobject_uevent_env kobject: 'loop1' (00000000ff887faa): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000dcf095d7): kobject_uevent_env kobject: 'loop4' (00000000dcf095d7): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003e3fdb66): kobject_uevent_env kobject: 'loop0' (000000003e3fdb66): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000c9df48b7): kobject_uevent_env kobject: 'loop2' (00000000c9df48b7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000cca82e5a): kobject_uevent_env kobject: 'loop3' (00000000cca82e5a): fill_kobj_path: path = '/devices/virtual/block/loop3'