BUG: sleeping function called from invalid context at mm/slab.h:421 in_atomic(): 1, irqs_disabled(): 1, pid: 4533, name: syz-executor3 4 locks held by syz-executor3/4533: #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_unlinkat+0x3c4/0xa10 fs/namei.c:4019 #2: (ptrval) (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:713 [inline] #2: (ptrval) (&sb->s_type->i_mutex_key#10){+.+.}, at: vfs_unlink+0xd1/0x510 fs/namei.c:3961 #3: (ptrval) (jbd2_handle){++++}, at: start_this_handle+0x581/0x1250 fs/jbd2/transaction.c:385 irq event stamp: 850120 hardirqs last enabled at (850119): [] slab_alloc mm/slab.c:3385 [inline] hardirqs last enabled at (850119): [] kmem_cache_alloc+0x26f/0x760 mm/slab.c:3552 hardirqs last disabled at (850120): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (849920): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (849877): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (849877): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 0 PID: 4533 Comm: syz-executor3 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:__ext4_check_dir_entry+0x194/0x370 fs/ext4/dir.c:80 RSP: 0018:ffff8801a1087828 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd9 RAX: dffffc0000000000 RBX: ffff8801cc50a500 RCX: ffffffff81fe9493 RDX: 1ffff100398a1570 RSI: ffffffff81fe94a5 RDI: ffff8801cc50ab80 RBP: ffff8801a1087878 R08: ffff8801a107e1c0 R09: ffff8801b7b35bd0 R10: 0000000000000003 R11: 0000000000000004 R12: 000000000000001c R13: 0000000000004080 R14: ffff88019cef74f0 R15: ffff8801bc96500c ext4_generic_delete_entry+0x1f5/0x4e0 fs/ext4/namei.c:2314 ext4_delete_entry+0x34e/0x550 fs/ext4/namei.c:2360 ext4_unlink+0x620/0x11e0 fs/ext4/namei.c:3033 vfs_unlink+0x2db/0x510 fs/namei.c:3970 do_unlinkat+0x6b8/0xa10 fs/namei.c:4033 __do_sys_unlink fs/namei.c:4080 [inline] __se_sys_unlink fs/namei.c:4078 [inline] __x64_sys_unlink+0x42/0x50 fs/namei.c:4078 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4556c7 RSP: 002b:00007ffeb959ac48 EFLAGS: 00000206 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004556c7 RDX: 000000000190b9d3 RSI: 00007ffeb959ace0 RDI: 00007ffeb959ace0 RBP: 00007ffeb959c9f0 R08: 0000000000000000 R09: 0000000000000010 R10: 000000000000000a R11: 0000000000000206 R12: 000000000190b940 R13: 0000000000000000 R14: 00000000000001a5 R15: 000000000001ba29 random: crng init done can: request_module (can-proto-0) failed. 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 xprt_adjust_timeout: rq_timeout = 0! xprt_adjust_timeout: rq_timeout = 0! overlayfs: missing 'lowerdir' overlayfs: unrecognized mount option "rs*{UM]Qy;y$隨CBBf3^tx&lI=T.yw77$/jg5+GAhi<>dvohv |z Z߲biY9cz%mg" or missing value gfs2: gfs2 mount does not exist hM==: renamed from lo gfs2: gfs2 mount does not exist libceph: parse_ips bad ip '0.file'