BUG: sleeping function called from invalid context at mm/slab.h:421 in_atomic(): 1, irqs_disabled(): 1, pid: 4556, name: syz-executor0 4 locks held by syz-executor0/4556: #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: do_rmdir+0x37b/0x610 fs/namei.c:3899 #2: (ptrval) (&type->i_mutex_dir_key){++++}, at: inode_lock include/linux/fs.h:713 [inline] #2: (ptrval) (&type->i_mutex_dir_key){++++}, at: vfs_rmdir+0xe0/0x470 fs/namei.c:3840 #3: (ptrval) (jbd2_handle){.+.+}, at: start_this_handle+0x581/0x1250 fs/jbd2/transaction.c:385 irq event stamp: 921528 hardirqs last enabled at (921527): [] slab_alloc mm/slab.c:3385 [inline] hardirqs last enabled at (921527): [] kmem_cache_alloc+0x26f/0x760 mm/slab.c:3552 hardirqs last disabled at (921528): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (921392): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (921377): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (921377): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 0 PID: 4556 Comm: syz-executor0 Not tainted 4.17.0-rc2+ #24 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:kasan_check_write+0x1/0x20 mm/kasan/kasan.c:277 RSP: 0018:ffff8801a2e0fb60 EFLAGS: 00000293 ORIG_RAX: ffffffffffffffd9 RAX: ffff8801a2e06680 RBX: 1ffff100345c1f75 RCX: ffffffff820e20fa RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88019abb2710 RBP: ffff8801a2e0fc78 R08: ffffed00335764e3 R09: ffffed00335764e2 R10: ffffed00335764e2 R11: ffff88019abb2717 R12: ffff8801a82be7b0 R13: 000000000000000e R14: 0000000000000000 R15: ffff88019abb2530 vfs_rmdir+0x251/0x470 fs/namei.c:3851 do_rmdir+0x523/0x610 fs/namei.c:3911 __do_sys_rmdir fs/namei.c:3929 [inline] __se_sys_rmdir fs/namei.c:3927 [inline] __x64_sys_rmdir+0x36/0x40 fs/namei.c:3927 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4556e7 RSP: 002b:00007ffd3b5285b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00000000004556e7 RDX: 0000000000000000 RSI: 00007ffd3b52a360 RDI: 00007ffd3b52a360 RBP: 00007ffd3b52a360 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000206 R12: 0000000001480940 R13: 0000000000000000 R14: 000000000000021b R15: 000000000001d501 random: crng init done can: request_module (can-proto-0) failed. tmpfs: No value for mount option ' L' tmpfs: No value for mount option ' L' gfs2: gfs2 mount does not exist hM==: renamed from lo gfs2: gfs2 mount does not exist IPVS: ftp: loaded support on port[0] = 21 gfs2: gfs2 mount does not exist gfs2: gfs2 mount does not exist gfs2: gfs2 mount does not exist