BUG: sleeping function called from invalid context at mm/slab.h:421 in_atomic(): 1, irqs_disabled(): 1, pid: 7830, name: syz-executor2 4 locks held by syz-executor2/7830: #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: 170004 hardirqs last enabled at (170003): [] lookup_bh_lru fs/buffer.c:1271 [inline] hardirqs last enabled at (170003): [] __find_get_block+0x2b8/0xe50 fs/buffer.c:1283 hardirqs last disabled at (170004): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (169696): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (169679): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (169679): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 1 PID: 7830 Comm: syz-executor2 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:arch_local_irq_enable arch/x86/include/asm/paravirt.h:793 [inline] RIP: 0010:lookup_bh_lru fs/buffer.c:1271 [inline] RIP: 0010:__find_get_block+0x2f1/0xe50 fs/buffer.c:1283 RSP: 0018:ffff8801c818f450 EFLAGS: 00000293 ORIG_RAX: ffffffffffffffd9 RAX: ffff8801c8960500 RBX: ffff8801aea53888 RCX: 1ffff1003912c1ba RDX: 0000000000000000 RSI: ffffffff81cfbaea RDI: ffff8801c8960d34 RBP: ffff8801c818f5e0 R08: ffff8801c8960d38 R09: 0000000000000006 R10: ffff8801c8960500 R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8801aea53888 __getblk_gfp+0xd6/0xaf0 fs/buffer.c:1309 sb_getblk include/linux/buffer_head.h:327 [inline] __ext4_get_inode_loc+0x4c5/0x14a0 fs/ext4/inode.c:4526 ext4_get_inode_loc fs/ext4/inode.c:4639 [inline] ext4_reserve_inode_write+0xf8/0x260 fs/ext4/inode.c:5760 ext4_mark_inode_dirty+0x177/0xb20 fs/ext4/inode.c:5912 ext4_rmdir+0x8a6/0xd20 fs/ext4/namei.c:2971 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:00007ffef4217df8 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00000000004556e7 RDX: 0000000000000000 RSI: 00007ffef4219ba0 RDI: 00007ffef4219ba0 RBP: 00007ffef4219ba0 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000202 R12: 00000000016de940 R13: 0000000000000000 R14: 0000000000000038 R15: 0000000000019eae random: crng init done 9pnet_virtio: no channels available for device ./file0 can: request_module (can-proto-0) failed. can: request_module (can-proto-0) failed. tmpfs: No value for mount option 'e'UЂt D7].9*W Xa^wގxSWx"_41.rf&:G|A"' cgroup: cgroup2: unknown option "BoG:*y^RYR[RF$tnK8y2IxnZ#JG6}?*w!z(/ݑ4rlQ1A.hm" cgroup: cgroup2: unknown option "BoG:*y^RYR[RF$tnK8y2IxnZ#JG6}?*w!z(/ݑ4rlQ1A.hm" tmpfs: No value for mount option 'e'UЂt D7].9*W Xa^wގxSWx"_41.rf&:G|A"' EXT4-fs (sda1): Unrecognized mount option "pXAgK%%8)):. \4FbKྺ8hUIăJlGiF8ҏ_M `b۸>8߼4WNHqSdO~M?Jm8RqrZ NA9"Hh'%s _Q}zV8Ss" or missing value EXT4-fs (sda1): Unrecognized mount option "pXAgK%%8)):. \4FbKྺ8hUIăJlGiF8ҏ_M `b۸>8߼4WNHqSdO~M?Jm8RqrZ NA9"Hh'%s _Q}zV8Ss" or missing value xprt_adjust_timeout: rq_timeout = 0! xprt_adjust_timeout: rq_timeout = 0!