=============================
WARNING: suspicious RCU usage
4.17.0-rc2+ #14 Not tainted
-----------------------------
include/linux/rcupdate.h:304 Illegal context switch in RCU read-side critical section!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
6 locks held by syz-executor5/4518:
#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_data_sem){++++}, at: ext4_truncate+0xe6d/0x1640 fs/ext4/inode.c:4458
#5: (ptrval) (rcu_read_lock){....}, at: find_get_entry+0x0/0xb90 mm/filemap.c:2673
stack backtrace:
CPU: 0 PID: 4518 Comm: syz-executor5 Not tainted 4.17.0-rc2+ #14
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
netlink: 'syz-executor4': attribute type 8 has an invalid length.
lockdep_rcu_suspicious+0x14a/0x153 kernel/locking/lockdep.c:4592
rcu_preempt_sleep_check include/linux/rcupdate.h:303 [inline]
___might_sleep+0x26d/0x320 kernel/sched/core.c:6153
__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:lock_is_held_type+0x18b/0x210 kernel/locking/lockdep.c:3960
RSP: 0018:ffff88019e6c60b8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffd9
RAX: dffffc0000000000 RBX: 0000000000000286 RCX: 0000000000000000
RDX: 1ffffffff11a315d RSI: ffffffff88d8e660 RDI: 0000000000000286
RBP: ffff88019e6c60d8 R08: ffffed003b5c46c3 R09: ffffed003b5c46c2
R10: ffffed003b5c46c2 R11: ffff8801dae23613 R12: ffff88019e6be500
R13: 0000000000000001 R14: dffffc0000000000 R15: ffff88019e6c63b8
lock_is_held include/linux/lockdep.h:344 [inline]
rcu_read_lock_held+0xa9/0xc0 kernel/rcu/update.c:333
radix_tree_deref_slot include/linux/radix-tree.h:241 [inline]
find_get_entry+0x835/0xb90 mm/filemap.c:1433
netlink: 'syz-executor4': attribute type 8 has an invalid length.
pagecache_get_page+0x116/0xe20 mm/filemap.c:1541
find_get_page_flags include/linux/pagemap.h:278 [inline]
ext4_mb_load_buddy_gfp+0x502/0x1e70 fs/ext4/mballoc.c:1145
ext4_free_blocks+0xb35/0x2ae0 fs/ext4/mballoc.c:4875
ext4_remove_blocks fs/ext4/extents.c:2555 [inline]
ext4_ext_rm_leaf fs/ext4/extents.c:2711 [inline]
ext4_ext_remove_space+0x27cc/0x4b60 fs/ext4/extents.c:2944
ext4_ext_truncate+0x1d1/0x220 fs/ext4/extents.c:4638
ext4_truncate+0xecd/0x1640 fs/ext4/inode.c:4463
ext4_evict_inode+0xb4b/0x1aa0 fs/ext4/inode.c:289
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: 0033:0x4550f7
RSP: 002b:00007ffe06a6a7d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00000000004550f7
RDX: 0000000000000000 RSI: 00007ffe06a6c580 RDI: 00007ffe06a6c580
RBP: 00007ffe06a6c580 R08: 0000000000000000 R09: 0000000000000001
R10: 000000000000000a R11: 0000000000000206 R12: 0000000000f23940
R13: 0000000000000000 R14: 0000000000000160 R15: 0000000000015751
BUG: sleeping function called from invalid context at mm/slab.h:421
in_atomic(): 1, irqs_disabled(): 1, pid: 4518, name: syz-executor5
6 locks held by syz-executor5/4518:
#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_data_sem){++++}, at: ext4_truncate+0xe6d/0x1640 fs/ext4/inode.c:4458
#5: (ptrval) (rcu_read_lock){....}, at: find_get_entry+0x0/0xb90 mm/filemap.c:2673
irq event stamp: 424392
hardirqs last enabled at (424391): [] lookup_bh_lru fs/buffer.c:1271 [inline]
hardirqs last enabled at (424391): [] __find_get_block+0x2b8/0xe50 fs/buffer.c:1283
hardirqs last disabled at (424392): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625
softirqs last enabled at (424380): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311
softirqs last disabled at (424373): [] invoke_softirq kernel/softirq.c:365 [inline]
softirqs last disabled at (424373): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405
CPU: 0 PID: 4518 Comm: syz-executor5 Not tainted 4.17.0-rc2+ #14
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:lock_is_held_type+0x18b/0x210 kernel/locking/lockdep.c:3960
RSP: 0018:ffff88019e6c60b8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffd9
RAX: dffffc0000000000 RBX: 0000000000000286 RCX: 0000000000000000
RDX: 1ffffffff11a315d RSI: ffffffff88d8e660 RDI: 0000000000000286
RBP: ffff88019e6c60d8 R08: ffffed003b5c46c3 R09: ffffed003b5c46c2
R10: ffffed003b5c46c2 R11: ffff8801dae23613 R12: ffff88019e6be500
R13: 0000000000000001 R14: dffffc0000000000 R15: ffff88019e6c63b8
lock_is_held include/linux/lockdep.h:344 [inline]
rcu_read_lock_held+0xa9/0xc0 kernel/rcu/update.c:333
radix_tree_deref_slot include/linux/radix-tree.h:241 [inline]
find_get_entry+0x835/0xb90 mm/filemap.c:1433
pagecache_get_page+0x116/0xe20 mm/filemap.c:1541
find_get_page_flags include/linux/pagemap.h:278 [inline]
ext4_mb_load_buddy_gfp+0x502/0x1e70 fs/ext4/mballoc.c:1145
ext4_free_blocks+0xb35/0x2ae0 fs/ext4/mballoc.c:4875
ext4_remove_blocks fs/ext4/extents.c:2555 [inline]
ext4_ext_rm_leaf fs/ext4/extents.c:2711 [inline]
ext4_ext_remove_space+0x27cc/0x4b60 fs/ext4/extents.c:2944
ext4_ext_truncate+0x1d1/0x220 fs/ext4/extents.c:4638
ext4_truncate+0xecd/0x1640 fs/ext4/inode.c:4463
ext4_evict_inode+0xb4b/0x1aa0 fs/ext4/inode.c:289
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: 0033:0x4550f7
RSP: 002b:00007ffe06a6a7d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00000000004550f7
RDX: 0000000000000000 RSI: 00007ffe06a6c580 RDI: 00007ffe06a6c580
RBP: 00007ffe06a6c580 R08: 0000000000000000 R09: 0000000000000001
R10: 000000000000000a R11: 0000000000000206 R12: 0000000000f23940
R13: 0000000000000000 R14: 0000000000000160 R15: 0000000000015751
random: crng init done
netlink: 'syz-executor4': attribute type 8 has an invalid length.
hfsplus: unable to find HFS+ superblock
hfsplus: unable to find HFS+ superblock
hfsplus: unable to find HFS+ superblock
QAT: Invalid ioctl
hfsplus: unable to find HFS+ superblock
QAT: Stopping all acceleration devices.
QAT: Invalid ioctl
QAT: Stopping all acceleration devices.
hfsplus: unable to find HFS+ superblock
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Stopping all acceleration devices.
QAT: Stopping all acceleration devices.
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Stopping all acceleration devices.
QAT: Stopping all acceleration devices.
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Stopping all acceleration devices.
QAT: Stopping all acceleration devices.
QAT: Invalid ioctl
QAT: Stopping all acceleration devices.
QAT: Invalid ioctl
QAT: Stopping all acceleration devices.
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Stopping all acceleration devices.
QAT: Stopping all acceleration devices.
QAT: Stopping all acceleration devices.
QAT: Stopping all acceleration devices.
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Stopping all acceleration devices.
QAT: Stopping all acceleration devices.
QAT: Invalid ioctl
QAT: Stopping all acceleration devices.
QAT: Stopping all acceleration devices.
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Stopping all acceleration devices.
QAT: Stopping all acceleration devices.
QAT: Invalid ioctl
QAT: Stopping all acceleration devices.
QAT: Invalid ioctl
QAT: Stopping all acceleration devices.
QAT: Invalid ioctl
QAT: Stopping all acceleration devices.