===================================================== WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected 5.0.0-rc4+ #50 Not tainted ----------------------------------------------------- syz-executor3/19224 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: 00000000a7e82dcc (&ctx->fault_pending_wqh){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline] 00000000a7e82dcc (&ctx->fault_pending_wqh){+.+.}, at: userfaultfd_ctx_read+0x690/0x2060 fs/userfaultfd.c:1040 and this task is already holding: 000000001edbb470 (&ctx->fd_wqh){....}, at: spin_lock_irq include/linux/spinlock.h:354 [inline] 000000001edbb470 (&ctx->fd_wqh){....}, at: userfaultfd_ctx_read+0x25e/0x2060 fs/userfaultfd.c:1036 which would create a new lock dependency: (&ctx->fd_wqh){....} -> (&ctx->fault_pending_wqh){+.+.} but this new dependency connects a SOFTIRQ-irq-safe lock: (&(&ctx->ctx_lock)->rlock){..-.} ... which became SOFTIRQ-irq-safe at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __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+0xa7/0x6e0 fs/aio.c:610 percpu_ref_put_many include/linux/percpu-refcount.h:285 [inline] percpu_ref_put include/linux/percpu-refcount.h:301 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x50c/0x6b0 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2452 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2773 [inline] rcu_process_callbacks+0xc4a/0x1680 kernel/rcu/tree.c:2754 __do_softirq+0x30b/0xb11 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:654 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:646 smpboot_thread_fn+0x6ab/0xa10 kernel/smpboot.c:164 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 to a SOFTIRQ-irq-unsafe lock: (&ctx->fault_pending_wqh){+.+.} ... which became SOFTIRQ-irq-unsafe at: ... lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __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] handle_userfault+0x901/0x2510 fs/userfaultfd.c:461 do_anonymous_page mm/memory.c:2921 [inline] handle_pte_fault mm/memory.c:3785 [inline] __handle_mm_fault+0x4563/0x55a0 mm/memory.c:3911 handle_mm_fault+0x4ec/0xc80 mm/memory.c:3948 do_user_addr_fault arch/x86/mm/fault.c:1475 [inline] __do_page_fault+0x5da/0xd60 arch/x86/mm/fault.c:1541 do_page_fault+0xe6/0x7d8 arch/x86/mm/fault.c:1572 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143 copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:180 copy_page_from_iter_iovec lib/iov_iter.c:294 [inline] copy_page_from_iter+0x3df/0x900 lib/iov_iter.c:907 skb_copy_datagram_from_iter+0x3ce/0x660 net/core/datagram.c:576 tcp_send_rcvq+0x35a/0x5c0 net/ipv4/tcp_input.c:4666 tcp_sendmsg_locked+0x3278/0x3e80 net/ipv4/tcp.c:1232 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1443 inet_sendmsg+0x1af/0x740 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 __sys_sendto+0x387/0x5f0 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+0x1a3/0x800 arch/x86/entry/common.c:290 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-executor3/19224: #0: 000000001edbb470 (&ctx->fd_wqh){....}, at: spin_lock_irq include/linux/spinlock.h:354 [inline] #0: 000000001edbb470 (&ctx->fd_wqh){....}, at: userfaultfd_ctx_read+0x25e/0x2060 fs/userfaultfd.c:1036 the dependencies between SOFTIRQ-irq-safe lock and the holding lock: -> (&(&ctx->ctx_lock)->rlock){..-.} { IN-SOFTIRQ-W at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __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+0xa7/0x6e0 fs/aio.c:610 percpu_ref_put_many include/linux/percpu-refcount.h:285 [inline] percpu_ref_put include/linux/percpu-refcount.h:301 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x50c/0x6b0 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2452 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2773 [inline] rcu_process_callbacks+0xc4a/0x1680 kernel/rcu/tree.c:2754 __do_softirq+0x30b/0xb11 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:654 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:646 smpboot_thread_fn+0x6ab/0xa10 kernel/smpboot.c:164 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 INITIAL USE at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __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+0xa7/0x6e0 fs/aio.c:610 percpu_ref_put_many include/linux/percpu-refcount.h:285 [inline] percpu_ref_put include/linux/percpu-refcount.h:301 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x50c/0x6b0 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2452 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2773 [inline] rcu_process_callbacks+0xc4a/0x1680 kernel/rcu/tree.c:2754 __do_softirq+0x30b/0xb11 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:654 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:646 smpboot_thread_fn+0x6ab/0xa10 kernel/smpboot.c:164 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 } ... key at: [] __key.51971+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] aio_poll+0x7b9/0x14e0 fs/aio.c:1772 __io_submit_one fs/aio.c:1875 [inline] io_submit_one+0xc39/0x1050 fs/aio.c:1908 __do_sys_io_submit fs/aio.c:1953 [inline] __se_sys_io_submit fs/aio.c:1923 [inline] __x64_sys_io_submit+0x1c4/0x5d0 fs/aio.c:1923 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> (&ctx->fd_wqh){....} { INITIAL USE at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152 __wake_up_common_lock+0x19b/0x390 kernel/sched/wait.c:120 __wake_up+0xe/0x10 kernel/sched/wait.c:145 handle_userfault+0xdfb/0x2510 fs/userfaultfd.c:487 do_anonymous_page mm/memory.c:2921 [inline] handle_pte_fault mm/memory.c:3785 [inline] __handle_mm_fault+0x4563/0x55a0 mm/memory.c:3911 handle_mm_fault+0x4ec/0xc80 mm/memory.c:3948 do_user_addr_fault arch/x86/mm/fault.c:1475 [inline] __do_page_fault+0x5da/0xd60 arch/x86/mm/fault.c:1541 do_page_fault+0xe6/0x7d8 arch/x86/mm/fault.c:1572 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143 copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:180 copy_page_from_iter_iovec lib/iov_iter.c:294 [inline] copy_page_from_iter+0x3df/0x900 lib/iov_iter.c:907 skb_copy_datagram_from_iter+0x3ce/0x660 net/core/datagram.c:576 tcp_send_rcvq+0x35a/0x5c0 net/ipv4/tcp_input.c:4666 tcp_sendmsg_locked+0x3278/0x3e80 net/ipv4/tcp.c:1232 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1443 inet_sendmsg+0x1af/0x740 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 __sys_sendto+0x387/0x5f0 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+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe } ... key at: [] __key.44853+0x0/0x40 ... acquired at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __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+0x690/0x2060 fs/userfaultfd.c:1040 userfaultfd_read+0x1e0/0x2c0 fs/userfaultfd.c:1198 __vfs_read+0x116/0xb20 fs/read_write.c:416 vfs_read+0x194/0x3e0 fs/read_write.c:452 ksys_read+0x105/0x260 fs/read_write.c:578 __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:586 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe the dependencies between the lock to be acquired and SOFTIRQ-irq-unsafe lock: -> (&ctx->fault_pending_wqh){+.+.} { HARDIRQ-ON-W at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __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] handle_userfault+0x901/0x2510 fs/userfaultfd.c:461 do_anonymous_page mm/memory.c:2921 [inline] handle_pte_fault mm/memory.c:3785 [inline] __handle_mm_fault+0x4563/0x55a0 mm/memory.c:3911 handle_mm_fault+0x4ec/0xc80 mm/memory.c:3948 do_user_addr_fault arch/x86/mm/fault.c:1475 [inline] __do_page_fault+0x5da/0xd60 arch/x86/mm/fault.c:1541 do_page_fault+0xe6/0x7d8 arch/x86/mm/fault.c:1572 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143 copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:180 copy_page_from_iter_iovec lib/iov_iter.c:294 [inline] copy_page_from_iter+0x3df/0x900 lib/iov_iter.c:907 skb_copy_datagram_from_iter+0x3ce/0x660 net/core/datagram.c:576 tcp_send_rcvq+0x35a/0x5c0 net/ipv4/tcp_input.c:4666 tcp_sendmsg_locked+0x3278/0x3e80 net/ipv4/tcp.c:1232 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1443 inet_sendmsg+0x1af/0x740 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 __sys_sendto+0x387/0x5f0 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+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe SOFTIRQ-ON-W at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __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] handle_userfault+0x901/0x2510 fs/userfaultfd.c:461 do_anonymous_page mm/memory.c:2921 [inline] handle_pte_fault mm/memory.c:3785 [inline] __handle_mm_fault+0x4563/0x55a0 mm/memory.c:3911 handle_mm_fault+0x4ec/0xc80 mm/memory.c:3948 do_user_addr_fault arch/x86/mm/fault.c:1475 [inline] __do_page_fault+0x5da/0xd60 arch/x86/mm/fault.c:1541 do_page_fault+0xe6/0x7d8 arch/x86/mm/fault.c:1572 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143 copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:180 copy_page_from_iter_iovec lib/iov_iter.c:294 [inline] copy_page_from_iter+0x3df/0x900 lib/iov_iter.c:907 skb_copy_datagram_from_iter+0x3ce/0x660 net/core/datagram.c:576 tcp_send_rcvq+0x35a/0x5c0 net/ipv4/tcp_input.c:4666 tcp_sendmsg_locked+0x3278/0x3e80 net/ipv4/tcp.c:1232 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1443 inet_sendmsg+0x1af/0x740 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 __sys_sendto+0x387/0x5f0 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+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe INITIAL USE at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __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] handle_userfault+0x901/0x2510 fs/userfaultfd.c:461 do_anonymous_page mm/memory.c:2921 [inline] handle_pte_fault mm/memory.c:3785 [inline] __handle_mm_fault+0x4563/0x55a0 mm/memory.c:3911 handle_mm_fault+0x4ec/0xc80 mm/memory.c:3948 do_user_addr_fault arch/x86/mm/fault.c:1475 [inline] __do_page_fault+0x5da/0xd60 arch/x86/mm/fault.c:1541 do_page_fault+0xe6/0x7d8 arch/x86/mm/fault.c:1572 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143 copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:180 copy_page_from_iter_iovec lib/iov_iter.c:294 [inline] copy_page_from_iter+0x3df/0x900 lib/iov_iter.c:907 skb_copy_datagram_from_iter+0x3ce/0x660 net/core/datagram.c:576 tcp_send_rcvq+0x35a/0x5c0 net/ipv4/tcp_input.c:4666 tcp_sendmsg_locked+0x3278/0x3e80 net/ipv4/tcp.c:1232 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1443 inet_sendmsg+0x1af/0x740 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 __sys_sendto+0x387/0x5f0 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+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe } ... key at: [] __key.44850+0x0/0x40 ... acquired at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __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+0x690/0x2060 fs/userfaultfd.c:1040 userfaultfd_read+0x1e0/0x2c0 fs/userfaultfd.c:1198 __vfs_read+0x116/0xb20 fs/read_write.c:416 vfs_read+0x194/0x3e0 fs/read_write.c:452 ksys_read+0x105/0x260 fs/read_write.c:578 __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:586 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe stack backtrace: CPU: 1 PID: 19224 Comm: syz-executor3 Not tainted 5.0.0-rc4+ #50 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+0x1db/0x2d0 lib/dump_stack.c:113 print_bad_irq_dependency kernel/locking/lockdep.c:1573 [inline] check_usage.cold+0x5e2/0x917 kernel/locking/lockdep.c:1605 check_irq_usage kernel/locking/lockdep.c:1661 [inline] check_prev_add_irq kernel/locking/lockdep_states.h:8 [inline] check_prev_add kernel/locking/lockdep.c:1871 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2350 [inline] __lock_acquire+0x2169/0x4a30 kernel/locking/lockdep.c:3338 lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __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+0x690/0x2060 fs/userfaultfd.c:1040 userfaultfd_read+0x1e0/0x2c0 fs/userfaultfd.c:1198 __vfs_read+0x116/0xb20 fs/read_write.c:416 vfs_read+0x194/0x3e0 fs/read_write.c:452 ksys_read+0x105/0x260 fs/read_write.c:578 __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:586 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458089 Code: 6d 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f3e1c693c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458089 RDX: 0000000000000064 RSI: 0000000020009f9c RDI: 0000000000000008 RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3e1c6946d4 R13: 00000000004c3b77 R14: 00000000004d8500 R15: 00000000ffffffff kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' FAT-fs (loop3): Unrecognized mount option "nnonumtail=1" or missing value kobject: 'loop1' (000000001854f9c1): kobject_uevent_env kobject: 'loop1' (000000001854f9c1): fill_kobj_path: path = '/devices/virtual/block/loop1' audit: type=1400 audit(1548796255.040:128): avc: denied { create } for pid=19233 comm="syz-executor1" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=1 kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'kvm' (00000000ea92e6a7): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000ea92e6a7): fill_kobj_path: path = '/devices/virtual/misc/kvm' audit: type=1400 audit(1548796255.110:129): avc: denied { write } for pid=19233 comm="syz-executor1" path="socket:[65195]" dev="sockfs" ino=65195 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=1 kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (00000000ea92e6a7): kobject_uevent_env kobject: 'kvm' (00000000ea92e6a7): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (000000001854f9c1): kobject_uevent_env kobject: 'loop1' (000000001854f9c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000ea92e6a7): kobject_uevent_env kobject: 'kvm' (00000000ea92e6a7): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' FAT-fs (loop3): Unrecognized mount option "nnonumtail=1" or missing value kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000001854f9c1): kobject_uevent_env kobject: 'loop1' (000000001854f9c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000001854f9c1): kobject_uevent_env kobject: 'loop1' (000000001854f9c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000001854f9c1): kobject_uevent_env kobject: 'loop1' (000000001854f9c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000001854f9c1): kobject_uevent_env kobject: 'loop1' (000000001854f9c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000001854f9c1): kobject_uevent_env kobject: 'loop1' (000000001854f9c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' cgroup: fork rejected by pids controller in /syz5 kobject: 'loop1' (000000001854f9c1): kobject_uevent_env kobject: 'loop1' (000000001854f9c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000001854f9c1): kobject_uevent_env kobject: 'loop1' (000000001854f9c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000001854f9c1): kobject_uevent_env kobject: 'loop1' (000000001854f9c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000001854f9c1): kobject_uevent_env kobject: 'loop1' (000000001854f9c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000001854f9c1): kobject_uevent_env kobject: 'loop1' (000000001854f9c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000034e393f): kobject_uevent_env kobject: 'loop3' (00000000034e393f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000f33d4685): kobject_uevent_env kobject: 'loop5' (00000000f33d4685): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000e88ab05a): kobject_uevent_env kobject: 'loop4' (00000000e88ab05a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000f38431c2): kobject_uevent_env kobject: 'loop0' (00000000f38431c2): fill_kobj_path: path = '/devices/virtual/block/loop0'