================================ WARNING: inconsistent lock state 5.9.0-rc3-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. modprobe/14119 [HC0[0]:SC1[1]:HE1:SE0] takes: ffffffff89c54ff8 (padata_works_lock){+.?.}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline] ffffffff89c54ff8 (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_bearer_enable+0x1e/0x30 net/tipc/bearer.c:1003 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: 1692 hardirqs last enabled at (1692): [] __local_bh_enable_ip+0x10f/0x1f0 kernel/softirq.c:200 hardirqs last disabled at (1691): [] __local_bh_enable_ip+0x154/0x1f0 kernel/softirq.c:177 softirqs last enabled at (256): [] fpu__clear+0x9d/0x150 arch/x86/kernel/fpu/core.c:378 softirqs last disabled at (1665): [] 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 *** 3 locks held by modprobe/14119: #0: ffffffff8a072960 (tomoyo_ss){....}-{0:0}, at: tomoyo_check_open_permission+0xe8/0x380 security/tomoyo/file.c:761 #1: ffffc90000007d68 ((&d->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:35 [inline] #1: ffffc90000007d68 ((&d->timer)){+.-.}-{0:0}, at: call_timer_fn+0xdb/0x760 kernel/time/timer.c:1403 #2: ffffffff89bd6a40 (rcu_read_lock){....}-{1:2}, at: buf_msg net/tipc/msg.h:198 [inline] #2: ffffffff89bd6a40 (rcu_read_lock){....}-{1:2}, at: tipc_bearer_xmit_skb+0x8c/0x3f0 net/tipc/bearer.c:516 stack backtrace: CPU: 0 PID: 14119 Comm: modprobe 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_local_irq_restore+0x2e/0x50 arch/x86/include/asm/paravirt.h:770 Code: 3c b6 89 53 48 89 fb 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 18 48 83 3d c1 e2 5c 08 00 74 0c 48 89 df 57 9d <0f> 1f 44 00 00 5b c3 0f 0b 48 c7 c7 48 3c b6 89 e8 cd f4 5a 00 eb RSP: 0018:ffffc9000cd8f640 EFLAGS: 00000282 RAX: 1ffffffff136c789 RBX: 0000000000000282 RCX: 1ffffffff1308b20 RDX: dffffc0000000000 RSI: ffffffff89bd6980 RDI: 0000000000000282 RBP: ffff88808bbf6300 R08: 0000000000000d40 R09: ffff88808bbf6be0 R10: fffffbfff1564d01 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88808bbf6be8 R14: ffff88808bbf6be8 R15: 0000000000000282 lock_is_held_type+0xbb/0xf0 kernel/locking/lockdep.c:5047 lock_is_held include/linux/lockdep.h:267 [inline] rcu_read_lock_sched_held+0x3a/0xb0 kernel/rcu/update.c:136 trace_kmalloc include/trace/events/kmem.h:46 [inline] trace_kmalloc+0xfd/0x130 include/trace/events/kmem.h:46 __do_kmalloc mm/slab.c:3656 [inline] __kmalloc+0x1c7/0x310 mm/slab.c:3664 kmalloc include/linux/slab.h:559 [inline] kzalloc include/linux/slab.h:666 [inline] tomoyo_encode2.part.0+0xe9/0x3a0 security/tomoyo/realpath.c:45 tomoyo_encode2 security/tomoyo/realpath.c:31 [inline] tomoyo_encode+0x28/0x50 security/tomoyo/realpath.c:80 tomoyo_realpath_from_path+0x186/0x620 security/tomoyo/realpath.c:288 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x272/0x380 security/tomoyo/file.c:771 tomoyo_file_open security/tomoyo/tomoyo.c:313 [inline] tomoyo_file_open+0xa3/0xd0 security/tomoyo/tomoyo.c:308 security_file_open+0x52/0x4f0 security/security.c:1574 do_dentry_open+0x358/0x11b0 fs/open.c:804 do_open fs/namei.c:3251 [inline] path_openat+0x1b9a/0x2730 fs/namei.c:3368 do_filp_open+0x17e/0x3c0 fs/namei.c:3395 do_sys_openat2+0x16d/0x420 fs/open.c:1168 do_sys_open fs/open.c:1184 [inline] __do_sys_open fs/open.c:1192 [inline] __se_sys_open fs/open.c:1188 [inline] __x64_sys_open+0x119/0x1c0 fs/open.c:1188 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f14cb5bf6f0 Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 19 30 2c 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 fe 9d 01 00 48 89 04 24 RSP: 002b:00007ffc0e3b3b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000561a8b3b7861 RCX: 00007f14cb5bf6f0 RDX: 00007ffc0e3b3da4 RSI: 0000000000080000 RDI: 00007ffc0e3b3d80 RBP: 0000000000000000 R08: 0000561a89bd6a9d R09: 0000000000000024 R10: 0000000000000073 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc0e3b3c4c R14: 0000561a8b3b6150 R15: 0000561a8b3b6290