=============================
WARNING: suspicious RCU usage
4.17.0-rc2+ #31 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
1 lock held by jbd2/sda1-8/2272:
#0: (ptrval) (rcu_read_lock){....}, at: hctx_lock+0x7a/0x1d0 block/blk-mq.c:570
stack backtrace:
CPU: 0 PID: 2272 Comm: jbd2/sda1-8 Not tainted 4.17.0-rc2+ #31
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
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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa1/0xc0 kernel/locking/spinlock.c:184
RSP: 0000:ffff8801cc57d778 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffd9
RAX: dffffc0000000000 RBX: 0000000000000286 RCX: 0000000000000000
RDX: 1ffffffff11a315d RSI: ffff8801cc572ab8 RDI: 0000000000000286
RBP: ffff8801cc57d788 R08: ffff8801cc572ab8 R09: 0000000000000006
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d22457e0
R13: ffff8801d2245818 R14: 0000000000000286 R15: 00000000d1c35001
spin_unlock_irqrestore include/linux/spinlock.h:365 [inline]
virtscsi_kick_cmd+0xcb/0x130 drivers/scsi/virtio_scsi.c:478
virtscsi_queuecommand+0x98a/0xe30 drivers/scsi/virtio_scsi.c:569
scsi_dispatch_cmd+0x3ea/0xcb0 drivers/scsi/scsi_lib.c:1761
scsi_queue_rq+0x1531/0x1ed0 drivers/scsi/scsi_lib.c:2064
blk_mq_dispatch_rq_list+0xe0a/0x2490 block/blk-mq.c:1223
blk_mq_do_dispatch_sched+0x23b/0x560 block/blk-mq-sched.c:120
blk_mq_sched_dispatch_requests+0x63b/0xa60 block/blk-mq-sched.c:216
__blk_mq_run_hw_queue+0x156/0x200 block/blk-mq.c:1334
__blk_mq_delay_run_hw_queue+0x488/0x520 block/blk-mq.c:1402
blk_mq_run_hw_queue+0x1c2/0x390 block/blk-mq.c:1439
blk_mq_sched_insert_requests+0x1b4/0x250 block/blk-mq-sched.c:478
blk_mq_flush_plug_list+0xa79/0x1120 block/blk-mq.c:1689
blk_flush_plug_list+0x1b3/0xb00 block/blk-core.c:3688
blk_finish_plug+0x58/0xa2 block/blk-core.c:3752
jbd2_journal_commit_transaction+0x45d0/0x8c18 fs/jbd2/commit.c:774
kjournald2+0x26c/0xb30 fs/jbd2/journal.c:229
kthread+0x345/0x410 kernel/kthread.c:238
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412
BUG: sleeping function called from invalid context at mm/slab.h:421
in_atomic(): 1, irqs_disabled(): 1, pid: 2272, name: jbd2/sda1-8
1 lock held by jbd2/sda1-8/2272:
#0: (ptrval) (rcu_read_lock){....}, at: hctx_lock+0x7a/0x1d0 block/blk-mq.c:570
irq event stamp: 36262
hardirqs last enabled at (36261): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
hardirqs last enabled at (36261): [] _raw_spin_unlock_irqrestore+0x74/0xc0 kernel/locking/spinlock.c:184
hardirqs last disabled at (36262): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625
softirqs last enabled at (35844): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311
softirqs last disabled at (35769): [] invoke_softirq kernel/softirq.c:365 [inline]
softirqs last disabled at (35769): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405
CPU: 0 PID: 2272 Comm: jbd2/sda1-8 Not tainted 4.17.0-rc2+ #31
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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa1/0xc0 kernel/locking/spinlock.c:184
RSP: 0000:ffff8801cc57d778 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffd9
RAX: dffffc0000000000 RBX: 0000000000000286 RCX: 0000000000000000
RDX: 1ffffffff11a315d RSI: ffff8801cc572ab8 RDI: 0000000000000286
RBP: ffff8801cc57d788 R08: ffff8801cc572ab8 R09: 0000000000000006
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d22457e0
R13: ffff8801d2245818 R14: 0000000000000286 R15: 00000000d1c35001
spin_unlock_irqrestore include/linux/spinlock.h:365 [inline]
virtscsi_kick_cmd+0xcb/0x130 drivers/scsi/virtio_scsi.c:478
virtscsi_queuecommand+0x98a/0xe30 drivers/scsi/virtio_scsi.c:569
scsi_dispatch_cmd+0x3ea/0xcb0 drivers/scsi/scsi_lib.c:1761
scsi_queue_rq+0x1531/0x1ed0 drivers/scsi/scsi_lib.c:2064
blk_mq_dispatch_rq_list+0xe0a/0x2490 block/blk-mq.c:1223
blk_mq_do_dispatch_sched+0x23b/0x560 block/blk-mq-sched.c:120
blk_mq_sched_dispatch_requests+0x63b/0xa60 block/blk-mq-sched.c:216
__blk_mq_run_hw_queue+0x156/0x200 block/blk-mq.c:1334
__blk_mq_delay_run_hw_queue+0x488/0x520 block/blk-mq.c:1402
blk_mq_run_hw_queue+0x1c2/0x390 block/blk-mq.c:1439
blk_mq_sched_insert_requests+0x1b4/0x250 block/blk-mq-sched.c:478
blk_mq_flush_plug_list+0xa79/0x1120 block/blk-mq.c:1689
blk_flush_plug_list+0x1b3/0xb00 block/blk-core.c:3688
blk_finish_plug+0x58/0xa2 block/blk-core.c:3752
jbd2_journal_commit_transaction+0x45d0/0x8c18 fs/jbd2/commit.c:774
kjournald2+0x26c/0xb30 fs/jbd2/journal.c:229
kthread+0x345/0x410 kernel/kthread.c:238
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412
random: crng init done
netlink: 16 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 16 bytes leftover after parsing attributes in process `syz-executor0'.
WARNING: CPU: 1 PID: 11111 at include/net/sock.h:644 sk_del_node_init include/net/sock.h:644 [inline]
WARNING: CPU: 1 PID: 11111 at include/net/sock.h:644 smc_unhash_sk+0x345/0x4a0 net/smc/af_smc.c:92