BUG: sleeping function called from invalid context at mm/slab.h:421 in_atomic(): 1, irqs_disabled(): 1, pid: 9421, name: syz-executor6 5 locks held by syz-executor6/9421: #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) (sb_internal){.+.+}, at: sb_start_intwrite include/linux/fs.h:1597 [inline] #2: (ptrval) (sb_internal){.+.+}, at: ext4_evict_inode+0x720/0x1aa0 fs/ext4/inode.c:250 #3: (ptrval) (jbd2_handle){++++}, at: start_this_handle+0x581/0x1250 fs/jbd2/transaction.c:385 #4: (ptrval) (&(&ei->i_raw_lock)->rlock){+.+.}, at: spin_lock include/linux/spinlock.h:310 [inline] #4: (ptrval) (&(&ei->i_raw_lock)->rlock){+.+.}, at: ext4_do_update_inode fs/ext4/inode.c:5120 [inline] #4: (ptrval) (&(&ei->i_raw_lock)->rlock){+.+.}, at: ext4_mark_iloc_dirty+0x295/0x2e90 fs/ext4/inode.c:5741 irq event stamp: 218554 hardirqs last enabled at (218553): [] lookup_bh_lru fs/buffer.c:1271 [inline] hardirqs last enabled at (218553): [] __find_get_block+0x2b8/0xe50 fs/buffer.c:1283 hardirqs last disabled at (218554): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (218404): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (218357): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (218357): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 0 PID: 9421 Comm: syz-executor6 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:__read_once_size include/linux/compiler.h:188 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:69 [inline] RIP: 0010:write_comp_data+0x22/0x70 kernel/kcov.c:122 RSP: 0018:ffff8801a36ef1f8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd9 RAX: 0000000000000000 RBX: ffff8801cdce6430 RCX: ffffffff8206eaf8 RDX: 0000000000000002 RSI: 000000000000000f RDI: 0000000000000005 RBP: ffff8801a36ef1f8 R08: ffff8801d0a281c0 R09: ffffed0039b9ccfd R10: ffffed0039b9ccfd R11: ffff8801cdce67eb R12: ffff8801c02b7600 R13: 0000000000000002 R14: ffff8801cdce6248 R15: ffff8801c02b7630 __sanitizer_cov_trace_const_cmp4+0x16/0x20 kernel/kcov.c:188 ext4_do_update_inode fs/ext4/inode.c:5194 [inline] ext4_mark_iloc_dirty+0x14b8/0x2e90 fs/ext4/inode.c:5741 ext4_orphan_del+0x8c4/0xed0 fs/ext4/namei.c:2897 ext4_evict_inode+0xba6/0x1aa0 fs/ext4/inode.c:319 evict+0x4a6/0x960 fs/inode.c:557 iput_final fs/inode.c:1519 [inline] iput+0x62d/0xa80 fs/inode.c:1545 dentry_unlink_inode+0x49a/0x620 fs/dcache.c:376 d_delete+0x1d7/0x220 fs/dcache.c:2426 vfs_rmdir+0x38b/0x470 fs/namei.c:3863 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:00007ffd31680898 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00000000004556e7 RDX: 0000000000000000 RSI: 00007ffd31682640 RDI: 00007ffd31682640 RBP: 00007ffd31682640 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000202 R12: 0000000001174940 R13: 0000000000000000 R14: 0000000000000067 R15: 000000000001dd66 random: crng init done can: request_module (can-proto-0) failed. can: request_module (can-proto-0) failed. gfs2: gfs2 mount does not exist “‘hMþ=ôå=²¨: renamed from lo gfs2: gfs2 mount does not exist IPVS: ftp: loaded support on port[0] = 21