================================ WARNING: inconsistent lock state 5.5.0-rc6-next-20200116-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor.3/11843 [HC0[0]:SC1[1]:HE1:SE0] takes: ffffffff8a03ce58 (ima_keys_lock){+.?.}, at: spin_lock include/linux/spinlock.h:338 [inline] ffffffff8a03ce58 (ima_keys_lock){+.?.}, at: ima_process_queued_keys+0x4f/0x320 security/integrity/ima/ima_asymmetric_keys.c:144 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4484 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] ima_queue_key security/integrity/ima/ima_asymmetric_keys.c:111 [inline] ima_post_key_create_or_update+0x234/0x470 security/integrity/ima/ima_asymmetric_keys.c:194 key_create_or_update+0x6b8/0xcb0 security/keys/key.c:944 load_system_certificate_list+0x1ba/0x25e certs/system_keyring.c:161 do_one_initcall+0x120/0x820 init/main.c:1109 do_initcall_level init/main.c:1182 [inline] do_initcalls init/main.c:1198 [inline] do_basic_setup init/main.c:1218 [inline] kernel_init_freeable+0x522/0x5d0 init/main.c:1402 kernel_init+0x12/0x1bf init/main.c:1309 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 irq event stamp: 17520 hardirqs last enabled at (17520): [] trace_hardirqs_on_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:41 hardirqs last disabled at (17519): [] trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42 softirqs last enabled at (14832): [] __do_softirq+0x6cd/0x98c kernel/softirq.c:319 softirqs last disabled at (15787): [] invoke_softirq kernel/softirq.c:373 [inline] softirqs last disabled at (15787): [] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(ima_keys_lock); lock(ima_keys_lock); *** DEADLOCK *** 4 locks held by syz-executor.3/11843: #0: ffff8880a652e428 (sb_writers#3){.+.+}, at: file_start_write include/linux/fs.h:2891 [inline] #0: ffff8880a652e428 (sb_writers#3){.+.+}, at: vfs_fallocate+0x7a2/0xa50 fs/open.c:308 #1: ffff8880967da848 (&sb->s_type->i_mutex_key#11){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #1: ffff8880967da848 (&sb->s_type->i_mutex_key#11){+.+.}, at: ext4_fallocate+0x2f3/0x3de0 fs/ext4/extents.c:4881 #2: ffff8880967da660 (&ei->i_data_sem){++++}, at: ext4_map_blocks+0x4b3/0x17e0 fs/ext4/inode.c:615 #3: ffffc90000007d50 ((&ima_key_queue_timer)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:172 [inline] #3: ffffc90000007d50 ((&ima_key_queue_timer)){+.-.}, at: call_timer_fn+0xe0/0x780 kernel/time/timer.c:1394 stack backtrace: CPU: 0 PID: 11843 Comm: syz-executor.3 Not tainted 5.5.0-rc6-next-20200116-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+0x197/0x210 lib/dump_stack.c:118 print_usage_bug.cold+0x327/0x378 kernel/locking/lockdep.c:3100 valid_state kernel/locking/lockdep.c:3111 [inline] mark_lock_irq kernel/locking/lockdep.c:3308 [inline] mark_lock+0xbb4/0x1220 kernel/locking/lockdep.c:3665 mark_usage kernel/locking/lockdep.c:3565 [inline] __lock_acquire+0x1e8e/0x4a00 kernel/locking/lockdep.c:3908 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4484 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] ima_process_queued_keys+0x4f/0x320 security/integrity/ima/ima_asymmetric_keys.c:144 ima_timer_handler+0x15/0x20 security/integrity/ima/ima_asymmetric_keys.c:46 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:218 [inline] RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:111 [inline] RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:360 [inline] RIP: 0010:trace_ext4_mark_inode_dirty include/trace/events/ext4.h:249 [inline] RIP: 0010:ext4_mark_inode_dirty+0x158/0x9c0 fs/ext4/inode.c:5762 Code: 83 fe 3f 0f 87 04 07 00 00 e8 04 05 6f ff 45 89 f6 be 08 00 00 00 4c 89 f0 48 c1 f8 06 48 8d 3c c5 40 2e a5 8a e8 38 6f ad ff <4c> 0f a3 35 50 9b 9e 08 41 0f 92 c6 31 ff 44 89 f6 e8 12 06 6f ff RSP: 0018:ffffc90001a2f3f8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: ffffc90001a2f508 RCX: ffffffff820692e8 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8aa52e40 RBP: ffffc90001a2f530 R08: 1ffffffff154a5c8 R09: fffffbfff154a5c9 R10: fffffbfff154a5c8 R11: ffffffff8aa52e47 R12: ffff8880967da708 R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000004801 ext4_dirty_inode+0xec/0x130 fs/ext4/inode.c:5802 __mark_inode_dirty+0x68e/0x1390 fs/fs-writeback.c:2258 mark_inode_dirty_sync include/linux/fs.h:2176 [inline] dquot_free_space include/linux/quotaops.h:385 [inline] dquot_free_block include/linux/quotaops.h:395 [inline] ext4_mb_new_blocks+0x1b31/0x39d0 fs/ext4/mballoc.c:4586 ext4_ext_map_blocks+0x23c9/0x3ac0 fs/ext4/extents.c:4433 ext4_map_blocks+0x52b/0x17e0 fs/ext4/inode.c:622 ext4_alloc_file_blocks+0x2f7/0xb60 fs/ext4/extents.c:4622 ext4_fallocate+0x1917/0x3de0 fs/ext4/extents.c:4903 vfs_fallocate+0x4aa/0xa50 fs/open.c:309 ioctl_preallocate+0x1a1/0x210 fs/ioctl.c:504 file_ioctl fs/ioctl.c:548 [inline] do_vfs_ioctl+0xeee/0x12e0 fs/ioctl.c:739 ksys_ioctl+0xaf/0x180 fs/ioctl.c:758 __do_sys_ioctl fs/ioctl.c:769 [inline] __se_sys_ioctl fs/ioctl.c:767 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:767 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b399 Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6c3100dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f6c3100e6d4 RCX: 000000000045b399 RDX: 0000000020000040 RSI: 000000004030582a RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000040d R14: 00000000004c5631 R15: 000000000075bf2c