================================ WARNING: inconsistent lock state 4.14.305-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor.0/11578 [HC0[0]:SC1[1]:HE1:SE0] takes: (&(&local->client_conns_lock)->rlock){+.?.}, at: [] spin_lock include/linux/spinlock.h:317 [inline] (&(&local->client_conns_lock)->rlock){+.?.}, at: [] rxrpc_put_one_client_conn net/rxrpc/conn_client.c:905 [inline] (&(&local->client_conns_lock)->rlock){+.?.}, at: [] rxrpc_put_client_conn+0x661/0xac0 net/rxrpc/conn_client.c:957 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152 spin_lock include/linux/spinlock.h:317 [inline] rxrpc_get_client_conn net/rxrpc/conn_client.c:306 [inline] rxrpc_connect_call+0x2bb/0x3e10 net/rxrpc/conn_client.c:692 rxrpc_new_client_call+0x8f4/0x1a10 net/rxrpc/call_object.c:276 rxrpc_new_client_call_for_sendmsg net/rxrpc/sendmsg.c:531 [inline] rxrpc_do_sendmsg+0x8dc/0xfb0 net/rxrpc/sendmsg.c:583 rxrpc_sendmsg+0x3cf/0x5f0 net/rxrpc/af_rxrpc.c:543 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 irq event stamp: 39752 hardirqs last enabled at (39752): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (39752): [] _raw_spin_unlock_irqrestore+0x79/0xe0 kernel/locking/spinlock.c:192 hardirqs last disabled at (39751): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (39751): [] _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:160 softirqs last enabled at (38828): [] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (39691): [] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (39691): [] irq_exit+0x193/0x240 kernel/softirq.c:409 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&(&local->client_conns_lock)->rlock); lock(&(&local->client_conns_lock)->rlock); *** DEADLOCK *** 3 locks held by syz-executor.0/11578: #0: (sb_writers#6){.+.+}, at: [] file_start_write include/linux/fs.h:2714 [inline] #0: (sb_writers#6){.+.+}, at: [] vfs_write+0x3d8/0x4d0 fs/read_write.c:543 #1: (&sb->s_type->i_mutex_key#15){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #1: (&sb->s_type->i_mutex_key#15){+.+.}, at: [] generic_file_write_iter+0x99/0x650 mm/filemap.c:3205 #2: (rcu_callback){....}, at: [] __rcu_reclaim kernel/rcu/rcu.h:185 [inline] #2: (rcu_callback){....}, at: [] rcu_do_batch kernel/rcu/tree.c:2699 [inline] #2: (rcu_callback){....}, at: [] invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline] #2: (rcu_callback){....}, at: [] __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline] #2: (rcu_callback){....}, at: [] rcu_process_callbacks+0x84e/0x1180 kernel/rcu/tree.c:2946 stack backtrace: CPU: 0 PID: 11578 Comm: syz-executor.0 Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_usage_bug.cold+0x42e/0x570 kernel/locking/lockdep.c:2589 valid_state kernel/locking/lockdep.c:2602 [inline] mark_lock_irq kernel/locking/lockdep.c:2796 [inline] mark_lock+0xb4d/0x1050 kernel/locking/lockdep.c:3194 mark_irqflags kernel/locking/lockdep.c:3072 [inline] __lock_acquire+0xc81/0x3f20 kernel/locking/lockdep.c:3448 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152 spin_lock include/linux/spinlock.h:317 [inline] rxrpc_put_one_client_conn net/rxrpc/conn_client.c:905 [inline] rxrpc_put_client_conn+0x661/0xac0 net/rxrpc/conn_client.c:957 rxrpc_put_connection net/rxrpc/ar-internal.h:862 [inline] rxrpc_rcu_destroy_call+0x83/0x190 net/rxrpc/call_object.c:653 __rcu_reclaim kernel/rcu/rcu.h:195 [inline] rcu_do_batch kernel/rcu/tree.c:2699 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline] rcu_process_callbacks+0x780/0x1180 kernel/rcu/tree.c:2946 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x193/0x240 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:796 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:60 RSP: 0018:ffff88805335fb70 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc90005bb2000 RDX: 0000000000040000 RSI: ffffffff81688fc3 RDI: ffff88805335fd50 RBP: ffff8880af07bd80 R08: 0000000000001000 R09: ffffea0001378640 R10: ffff88804de19fff R11: 0000000000000000 R12: 0000000000001000 R13: 0000000000000000 R14: ffff88805335fdb8 R15: 0000000000e3f000 generic_perform_write+0x186/0x430 mm/filemap.c:3055 __generic_file_write_iter+0x227/0x590 mm/filemap.c:3180 generic_file_write_iter+0x36f/0x650 mm/filemap.c:3208 call_write_iter include/linux/fs.h:1780 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x44c/0x630 fs/read_write.c:482 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f64369d7e7f RSP: 002b:00007f6434f97f10 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f64369d7e7f RDX: 00000000013bd7ef RSI: 00007f642cb78000 RDI: 0000000000000003 RBP: 00007f642cb78000 R08: 0000000000000000 R09: 00000000000054e0 R10: 00000000013bd7ef R11: 0000000000000293 R12: 0000000000000000 R13: 00007f6434f97fdc R14: 00007f6434f97fe0 R15: 0000000020000142 audit: type=1804 audit(1677027485.482:408): pid=11578 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir1624314343/syzkaller.BVkh14/60/bus" dev="sda1" ino=13891 res=1 audit: type=1804 audit(1677027485.512:409): pid=11578 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.0" name="/root/syzkaller-testdir1624314343/syzkaller.BVkh14/60/bus" dev="sda1" ino=13891 res=1 ntfs: volume version 3.1. audit: type=1804 audit(1677027486.752:410): pid=11661 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir1624314343/syzkaller.BVkh14/61/bus" dev="sda1" ino=13880 res=1 audit: type=1804 audit(1677027486.752:411): pid=11661 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.0" name="/root/syzkaller-testdir1624314343/syzkaller.BVkh14/61/bus" dev="sda1" ino=13880 res=1 kvm: vcpu 0: requested 128 ns lapic timer period limited to 500000 ns audit: type=1804 audit(1677027487.962:412): pid=11712 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir1624314343/syzkaller.BVkh14/62/bus" dev="sda1" ino=13879 res=1 audit: type=1804 audit(1677027487.962:413): pid=11712 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.0" name="/root/syzkaller-testdir1624314343/syzkaller.BVkh14/62/bus" dev="sda1" ino=13879 res=1 unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 kvm: vcpu 0: requested 128 ns lapic timer period limited to 500000 ns audit: type=1800 audit(1677027488.642:414): pid=11775 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="file0" dev="sda1" ino=14215 res=0 audit: type=1804 audit(1677027488.652:415): pid=11775 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir4073173088/syzkaller.gx03Vo/74/file0" dev="sda1" ino=14215 res=1 9pnet: Insufficient options for proto=fd audit: type=1804 audit(1677027488.652:416): pid=11775 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.4" name="/root/syzkaller-testdir4073173088/syzkaller.gx03Vo/74/file0" dev="sda1" ino=14215 res=1 9pnet: Insufficient options for proto=fd kvm: vcpu 0: requested 128 ns lapic timer period limited to 500000 ns 9pnet: Insufficient options for proto=fd 9pnet: Insufficient options for proto=fd kvm: vcpu 0: requested 128 ns lapic timer period limited to 500000 ns audit: type=1800 audit(1677027490.483:417): pid=11835 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="file0" dev="sda1" ino=13921 res=0 audit: type=1800 audit(1677027490.533:418): pid=11834 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="file0" dev="sda1" ino=14219 res=0 audit: type=1804 audit(1677027490.703:419): pid=11835 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir1453942664/syzkaller.tAtoRd/66/file0" dev="sda1" ino=13921 res=1