================================ WARNING: inconsistent lock state 5.9.0-rc3-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor.5/6878 [HC0[0]:SC1[1]:HE1:SE0] takes: ffffffff89c56b98 (padata_works_lock){+.?.}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline] ffffffff89c56b98 (padata_works_lock){+.?.}-{2:2}, at: padata_do_parallel+0x4d7/0x860 kernel/padata.c:220 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x1f3/0xae0 kernel/locking/lockdep.c:5006 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:354 [inline] padata_do_parallel+0x4d7/0x860 kernel/padata.c:220 pcrypt_aead_encrypt+0x39f/0x4d0 crypto/pcrypt.c:115 crypto_aead_encrypt+0xaa/0xf0 crypto/aead.c:94 tipc_aead_encrypt net/tipc/crypto.c:742 [inline] tipc_crypto_xmit+0x17a9/0x2690 net/tipc/crypto.c:1613 tipc_bearer_xmit_skb+0x180/0x3f0 net/tipc/bearer.c:523 tipc_enable_bearer+0xb1d/0xdc0 net/tipc/bearer.c:331 __tipc_nl_bearer_enable+0x2bf/0x390 net/tipc/bearer.c:995 __tipc_nl_compat_doit net/tipc/netlink_compat.c:371 [inline] tipc_nl_compat_doit+0x440/0x640 net/tipc/netlink_compat.c:393 tipc_nl_compat_handle net/tipc/netlink_compat.c:1278 [inline] tipc_nl_compat_recv+0x4ef/0xb40 net/tipc/netlink_compat.c:1321 genl_family_rcv_msg_doit net/netlink/genetlink.c:669 [inline] genl_family_rcv_msg net/netlink/genetlink.c:714 [inline] genl_rcv_msg+0x61d/0x980 net/netlink/genetlink.c:731 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2470 genl_rcv+0x24/0x40 net/netlink/genetlink.c:742 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 irq event stamp: 7472476 hardirqs last enabled at (7472476): [] __local_bh_enable_ip+0x10f/0x1f0 kernel/softirq.c:200 hardirqs last disabled at (7472475): [] __local_bh_enable_ip+0x154/0x1f0 kernel/softirq.c:177 softirqs last enabled at (7472366): [] tcp_close+0x8d2/0x11f0 net/ipv4/tcp.c:2579 softirqs last disabled at (7472437): [] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(padata_works_lock); lock(padata_works_lock); *** DEADLOCK *** 2 locks held by syz-executor.5/6878: #0: ffffc90000da8d68 ((&d->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:35 [inline] #0: ffffc90000da8d68 ((&d->timer)){+.-.}-{0:0}, at: call_timer_fn+0xdb/0x760 kernel/time/timer.c:1403 #1: ffffffff89bd6c80 (rcu_read_lock){....}-{1:2}, at: buf_msg net/tipc/msg.h:198 [inline] #1: ffffffff89bd6c80 (rcu_read_lock){....}-{1:2}, at: tipc_bearer_xmit_skb+0x8c/0x3f0 net/tipc/bearer.c:516 stack backtrace: CPU: 1 PID: 6878 Comm: syz-executor.5 Not tainted 5.9.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x198/0x1fd lib/dump_stack.c:118 print_usage_bug kernel/locking/lockdep.c:4020 [inline] valid_state kernel/locking/lockdep.c:3361 [inline] mark_lock_irq kernel/locking/lockdep.c:3560 [inline] mark_lock.cold+0x7a/0x7f kernel/locking/lockdep.c:4006 mark_usage kernel/locking/lockdep.c:3905 [inline] __lock_acquire+0x1126/0x5570 kernel/locking/lockdep.c:4380 lock_acquire+0x1f3/0xae0 kernel/locking/lockdep.c:5006 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:354 [inline] padata_do_parallel+0x4d7/0x860 kernel/padata.c:220 pcrypt_aead_encrypt+0x39f/0x4d0 crypto/pcrypt.c:115 crypto_aead_encrypt+0xaa/0xf0 crypto/aead.c:94 tipc_aead_encrypt net/tipc/crypto.c:742 [inline] tipc_crypto_xmit+0x17a9/0x2690 net/tipc/crypto.c:1613 tipc_bearer_xmit_skb+0x180/0x3f0 net/tipc/bearer.c:523 tipc_disc_timeout+0x84b/0xc90 net/tipc/discover.c:334 call_timer_fn+0x1ac/0x760 kernel/time/timer.c:1413 expire_timers kernel/time/timer.c:1458 [inline] __run_timers.part.0+0x67c/0xaa0 kernel/time/timer.c:1755 __run_timers kernel/time/timer.c:1736 [inline] run_timer_softirq+0xae/0x1a0 kernel/time/timer.c:1768 __do_softirq+0x1f7/0xa91 kernel/softirq.c:298 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0x9d/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x235/0x280 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x51/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:arch_static_branch_jump arch/x86/include/asm/jump_label.h:41 [inline] RIP: 0010:slab_want_init_on_alloc mm/slab.h:607 [inline] RIP: 0010:slab_alloc mm/slab.c:3309 [inline] RIP: 0010:kmem_cache_alloc+0x110/0x3a0 mm/slab.c:3482 Code: 54 24 08 0f 85 75 01 00 00 48 83 3d d1 c4 01 08 00 0f 84 40 02 00 00 4c 89 e7 57 9d 0f 1f 44 00 00 4c 8b 44 24 08 41 0f 18 08 11 01 00 00 f6 c7 01 0f 85 25 01 00 00 23 1d ac 5e fe 08 4c 89 RSP: 0018:ffffc900058c7ca0 EFLAGS: 00000282 RAX: 0000000000720533 RBX: 0000000000000dc0 RCX: 1ffffffff1565211 RDX: ffff88805f0f8440 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88821bc47c00 R08: ffff88809a211a80 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000282 R13: 0000000000000dc0 R14: ffff88821bc47c00 R15: 0000000000000200 kmem_cache_zalloc include/linux/slab.h:656 [inline] __alloc_file+0x21/0x350 fs/file_table.c:101 alloc_empty_file+0x6d/0x170 fs/file_table.c:151 alloc_file+0x5e/0x5a0 fs/file_table.c:193 alloc_file_pseudo+0x165/0x250 fs/file_table.c:233 sock_alloc_file+0x4f/0x190 net/socket.c:411 sock_map_fd net/socket.c:435 [inline] __sys_socket+0x13d/0x200 net/socket.c:1524 __do_sys_socket net/socket.c:1529 [inline] __se_sys_socket net/socket.c:1527 [inline] __x64_sys_socket+0x6f/0xb0 net/socket.c:1527 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460107 Code: 00 00 00 49 89 ca b8 36 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fa 88 fb ff c3 66 0f 1f 84 00 00 00 00 00 b8 29 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 dd 88 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffeccc94cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 0000000000747ca0 RCX: 0000000000460107 RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002 RBP: 00000000000007d0 R08: 0000000000006000 R09: 0000000000004000 R10: 00007ffeccc94da0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeccc95420 R14: 000000000007ccda R15: 0000000000000000