BUG: sleeping function called from invalid context at mm/slab.h:421 in_atomic(): 1, irqs_disabled(): 1, pid: 4609, name: syz-executor7 4 locks held by syz-executor7/4609: #0: (ptrval) (sb_writers#4){.+.+}, at: sb_start_write include/linux/fs.h:1550 [inline] #0: (ptrval) (sb_writers#4){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:386 #1: (ptrval) (&type->i_mutex_dir_key/1){+.+.}, at: inode_lock_nested include/linux/fs.h:748 [inline] #1: (ptrval) (&type->i_mutex_dir_key/1){+.+.}, at: filename_create+0x1aa/0x5a0 fs/namei.c:3606 #2: (ptrval) (jbd2_handle){.+.+}, at: start_this_handle+0x581/0x1250 fs/jbd2/transaction.c:385 #3: (ptrval) (rcu_callback){....}, at: __rcu_reclaim kernel/rcu/rcu.h:168 [inline] #3: (ptrval) (rcu_callback){....}, at: rcu_do_batch kernel/rcu/tree.c:2675 [inline] #3: (ptrval) (rcu_callback){....}, at: invoke_rcu_callbacks kernel/rcu/tree.c:2930 [inline] #3: (ptrval) (rcu_callback){....}, at: __rcu_process_callbacks kernel/rcu/tree.c:2897 [inline] #3: (ptrval) (rcu_callback){....}, at: rcu_process_callbacks+0xa2c/0x15f0 kernel/rcu/tree.c:2914 irq event stamp: 837219 hardirqs last enabled at (837218): [] kmem_cache_free+0xa0/0x2d0 mm/slab.c:3757 hardirqs last disabled at (837219): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (837168): [] spin_unlock_bh include/linux/spinlock.h:355 [inline] softirqs last enabled at (837168): [] wb_wakeup_delayed+0xa7/0xf0 mm/backing-dev.c:284 softirqs last disabled at (837189): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (837189): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 1 PID: 4609 Comm: syz-executor7 Not tainted 4.17.0-rc2+ #23 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+0x1b9/0x294 lib/dump_stack.c:113 ___might_sleep.cold.87+0x11f/0x13a kernel/sched/core.c:6188 __might_sleep+0x95/0x190 kernel/sched/core.c:6141 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x2b9/0x760 mm/slab.c:3727 kmalloc_array include/linux/slab.h:631 [inline] kcalloc include/linux/slab.h:642 [inline] numa_crng_init drivers/char/random.c:798 [inline] crng_reseed+0x427/0x920 drivers/char/random.c:923 credit_entropy_bits+0x98d/0xa30 drivers/char/random.c:708 add_interrupt_randomness+0x494/0x860 drivers/char/random.c:1254 handle_irq_event_percpu+0xf9/0x1c0 kernel/irq/handle.c:191 handle_irq_event+0xa7/0x135 kernel/irq/handle.c:206 handle_edge_irq+0x20f/0x870 kernel/irq/chip.c:791 generic_handle_irq_desc include/linux/irqdesc.h:159 [inline] handle_irq+0x18c/0x2e7 arch/x86/kernel/irq_64.c:77 do_IRQ+0x78/0x190 arch/x86/kernel/irq.c:245 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:642 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:783 [inline] RIP: 0010:kmem_cache_free+0xb3/0x2d0 mm/slab.c:3757 RSP: 0018:ffff8801daf079d0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffd5 RAX: 0000000000000007 RBX: ffff8801b0fe0580 RCX: 1ffff10033a25175 RDX: 0000000000000000 RSI: ffff88019d128bb0 RDI: 0000000000000286 RBP: ffff8801daf079f0 R08: ffff88019d128b38 R09: 0000000000000002 R10: ffff88019d128300 R11: 0000000000000000 R12: ffff8801da988940 R13: 0000000000000286 R14: ffffffff81bf5f9f R15: ffff8801daf07c60 file_free_rcu+0x6f/0x90 fs/file_table.c:49 __rcu_reclaim kernel/rcu/rcu.h:178 [inline] rcu_do_batch kernel/rcu/tree.c:2675 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2930 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2897 [inline] rcu_process_callbacks+0x941/0x15f0 kernel/rcu/tree.c:2914 __do_softirq+0x2e0/0xaf5 kernel/softirq.c:285 invoke_softirq kernel/softirq.c:365 [inline] irq_exit+0x1d1/0x200 kernel/softirq.c:405 exiting_irq arch/x86/include/asm/apic.h:525 [inline] smp_apic_timer_interrupt+0x17e/0x710 arch/x86/kernel/apic/apic.c:1052 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863 RIP: 0010:memcg_kmem_put_cache+0x21/0xb0 mm/memcontrol.c:2297 RSP: 0018:ffff88019d137820 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff8801d3e3ecc0 RCX: 0000000000000078 RDX: 1ffff1003a7c7da8 RSI: 0000000001408040 RDI: ffff8801d3e3ed40 RBP: ffff88019d137828 R08: ffff88019d1375c8 R09: 0000000000000010 R10: 00000000274bed1e R11: 00000000f81f5552 R12: ffff8801a7c4ab00 R13: ffff8801d3e3ecc0 R14: ffff8801d3e3ecc0 R15: 0000000001408040 slab_post_alloc_hook mm/slab.h:448 [inline] slab_alloc mm/slab.c:3392 [inline] kmem_cache_alloc+0x2c7/0x760 mm/slab.c:3552 kmem_cache_zalloc include/linux/slab.h:691 [inline] journal_alloc_journal_head fs/jbd2/journal.c:2423 [inline] jbd2_journal_add_journal_head+0x1e7/0x5c0 fs/jbd2/journal.c:2490 jbd2_journal_get_create_access+0x42/0x600 fs/jbd2/transaction.c:1122 __ext4_journal_get_create_access+0x46/0x90 fs/ext4/ext4_jbd2.c:250 ext4_getblk+0x2a9/0x600 fs/ext4/inode.c:989 ext4_bread+0x8d/0x2a0 fs/ext4/inode.c:1016 ext4_append+0x14e/0x370 fs/ext4/namei.c:66 ext4_init_new_dir fs/ext4/namei.c:2588 [inline] ext4_mkdir+0x52a/0xe50 fs/ext4/namei.c:2635 vfs_mkdir+0x42e/0x6b0 fs/namei.c:3787 do_mkdirat+0x266/0x2f0 fs/namei.c:3810 __do_sys_mkdir fs/namei.c:3826 [inline] __se_sys_mkdir fs/namei.c:3824 [inline] __x64_sys_mkdir+0x5c/0x80 fs/namei.c:3824 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x454db7 RSP: 002b:00007ffe41c10058 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000079 RCX: 0000000000454db7 RDX: 00007ffe41c10d35 RSI: 00000000000001ff RDI: 00007ffe41c10d30 RBP: 00007ffe41c10080 R08: 0000000000000000 R09: 0000000000000005 R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000013 R13: 0000000000000000 R14: 00000000007000c0 R15: 0000000000001380 random: crng init done devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options sctp: [Deprecated]: syz-executor5 (pid 9793) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead overlayfs: unrecognized mount option "u¢)îž±‹te+ØJ©bl¢®ùÙAÀnŠ¦M‰à<|„L©£"¿ÏŠ²¶oß;øCØtèƒ4DCs¿øÁu.U9g¨tb|¨ôÝKM“ÃÇW2/öôFÙ¤hCQV@iþ&fJ(H WC%žKl\(H«4õãÖìÝ´4‚òÈ7þr¡Œgùw†`âä´Âè†ñ`‹ôe;°Ü±mÍC²¡ÈÙ‚Ò†µPd6&^¤ƒ²Ð¸=-ž÷gáBï?$Â›øs¥à™3Ð&lÕôüáKM°Š" or missing value overlayfs: unrecognized mount option "u¢)îž±‹te+ØJ©bl¢®ùÙAÀnŠ¦M‰à<|„L©£"¿ÏŠ²¶oß;øCØtèƒ4DCs¿øÁu.U9g¨tb|¨ôÝKM“ÃÇW2/öôFÙ¤hCQV@iþ&fJ(H WC%žKl\(H«4õãÖìÝ´4‚òÈ7þr¡Œgùw†`âä´Âè†ñ`‹ôe;°Ü±mÍC²¡ÈÙ‚Ò†µPd6&^¤ƒ²Ð¸=-ž÷gáBï?$Â›øs¥à™3Ð&lÕôüáKM°Š" or missing value gfs2: gfs2 mount does not exist “‘hMþî€°=ôå=²¨: renamed from lo gfs2: gfs2 mount does not exist IPVS: ftp: loaded support on port[0] = 21 EXT4-fs (sda1): re-mounted. Opts: EXT4-fs (sda1): Unrecognized mount option "" or missing value