rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=4e94/1/0x4000000000000000 softirq=147909/147914 fqs=2
rcu: (detected by 0, t=10502 jiffies, g=196865, q=50 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6530 Comm: syz-executor.0 Not tainted 6.4.0-rc5-syzkaller-00133-g25041a4c02c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:__lock_acquire+0xc1f/0x5f30 kernel/locking/lockdep.c:5085
Code: 20 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 00 9d 52 91 e8 09 8d 71 00 48 0f a3 1d 71 13 ed 0f <0f> 83 c9 0f 00 00 48 8d 1c 5b 48 c1 e3 06 48 81 c3 20 a1 52 91 48
RSP: 0018:ffffc900001e0b18 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 0000000000000b12 RCX: ffffffff81658987
RDX: fffffbfff22a53cd RSI: 0000000000000008 RDI: ffffffff91529e60
RBP: ffff88807923bb80 R08: 0000000000000000 R09: ffffffff91529e67
R10: fffffbfff22a53cc R11: 0000000000000000 R12: 0000000000000040
R13: ffff88807923c6e2 R14: 0000000000000001 R15: ffff88807923c6c0
FS: 00007f6b67e59700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6b5d81e000 CR3: 000000007d615000 CR4: 0000000000350ee0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5705 [inline]
lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5670
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:350 [inline]
advance_sched+0xd2/0xd20 net/sched/sch_taprio.c:929
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x5fa/0xbe0 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x320/0x7b0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200
Code: 96 f6 8e 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be a8 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1e fa 65 8b 05 6d 75 7f 7e 89 c1 48 8b 34 24 81 e1 00 01 00
RSP: 0018:ffffc9000afe76e0 EFLAGS: 00000212
RAX: 0000000000016902 RBX: 0000000000000200 RCX: ffffc9000be86000
RDX: 0000000000040000 RSI: ffffffff81685ea5 RDI: 0000000000000007
RBP: ffffffff8d264eb8 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000200 R11: 205d303335365420 R12: 0000000000000000
R13: ffffffff8d264e60 R14: dffffc0000000000 R15: 0000000000000001
console_emit_next_record arch/x86/include/asm/irqflags.h:42 [inline]
console_flush_all+0x61b/0xcc0 kernel/printk/printk.c:2933
console_unlock+0xb8/0x1f0 kernel/printk/printk.c:3007
vprintk_emit+0x1bd/0x600 kernel/printk/printk.c:2307
vprintk+0x84/0xa0 kernel/printk/printk_safe.c:50
_printk+0xbf/0xf0 kernel/printk/printk.c:2328
set_capacity_and_notify+0x1fb/0x2c0 block/genhd.c:85
loop_set_size drivers/block/loop.c:237 [inline]
loop_configure+0xe57/0x1880 drivers/block/loop.c:1100
lo_ioctl+0x930/0x1990 drivers/block/loop.c:1550
blkdev_ioctl+0x372/0x7f0 block/ioctl.c:615
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6b6708bf57
Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 c4 57 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6b67e58f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6b6708bf57
RDX: 0000000000000003 RSI: 0000000000004c00 RDI: 0000000000000004
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000001508
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6b67e58fdc R14: 00007f6b67e58fe0 R15: 0000000020003f82
rcu: rcu_preempt kthread starved for 10498 jiffies! g196865 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:28320 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
schedule_timeout+0x14e/0x2b0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1609
rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1808
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 5108 Comm: kworker/0:6 Not tainted 6.4.0-rc5-syzkaller-00133-g25041a4c02c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Workqueue: events drain_vmap_area_work
RIP: 0010:csd_lock_wait kernel/smp.c:285 [inline]
RIP: 0010:smp_call_function_many_cond+0x684/0x15a0 kernel/smp.c:828
Code: 0b 00 85 ed 74 48 48 8b 44 24 08 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 b3 40 0b 00 f3 90 41 0f b6 04 24 <40> 38 c5 7c 08 84 c0 0f 85 ad 0c 00 00 8b 43 08 31 ff 83 e0 01 41
RSP: 0018:ffffc9000465fa40 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9943220 RCX: 0000000000000000
RDX: ffff888020779dc0 RSI: ffffffff8179059d RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed1017328645
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f50dbb831b8 CR3: 000000002912f000 CR4: 0000000000350ef0
Call Trace:
on_each_cpu_cond_mask+0x5a/0xa0 kernel/smp.c:996
__purge_vmap_area_lazy+0x207/0x1e60 mm/vmalloc.c:1750
drain_vmap_area_work+0x54/0xd0 mm/vmalloc.c:1804
process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [kworker/0:6:5108]
Modules linked in:
irq event stamp: 3613436
hardirqs last enabled at (3613435): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
hardirqs last disabled at (3613436): [] sysvec_apic_timer_interrupt+0xf/0xc0 arch/x86/kernel/apic/apic.c:1106
softirqs last enabled at (3563608): [] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last enabled at (3563608): [] __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
softirqs last disabled at (3563559): [] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last disabled at (3563559): [] __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
CPU: 0 PID: 5108 Comm: kworker/0:6 Not tainted 6.4.0-rc5-syzkaller-00133-g25041a4c02c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Workqueue: events drain_vmap_area_work
RIP: 0010:csd_lock_wait kernel/smp.c:285 [inline]
RIP: 0010:smp_call_function_many_cond+0x684/0x15a0 kernel/smp.c:828
Code: 0b 00 85 ed 74 48 48 8b 44 24 08 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 b3 40 0b 00 f3 90 41 0f b6 04 24 <40> 38 c5 7c 08 84 c0 0f 85 ad 0c 00 00 8b 43 08 31 ff 83 e0 01 41
RSP: 0018:ffffc9000465fa40 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9943220 RCX: 0000000000000000
RDX: ffff888020779dc0 RSI: ffffffff8179059d RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed1017328645
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f50dbb831b8 CR3: 000000002912f000 CR4: 0000000000350ef0
Call Trace:
on_each_cpu_cond_mask+0x5a/0xa0 kernel/smp.c:996
__purge_vmap_area_lazy+0x207/0x1e60 mm/vmalloc.c:1750
drain_vmap_area_work+0x54/0xd0 mm/vmalloc.c:1804
process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6530 Comm: syz-executor.0 Not tainted 6.4.0-rc5-syzkaller-00133-g25041a4c02c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:__remove_hrtimer+0x141/0x2a0 kernel/time/hrtimer.c:1127
Code: c0 48 89 f9 48 c1 e9 03 0f b6 0c 11 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 27 01 00 00 41 21 46 44 e8 af ad 10 00 <31> ff 44 89 ee e8 c5 a9 10 00 45 85 ed 0f 84 29 ff ff ff e8 97 ad
RSP: 0018:ffffc900001e0e00 EFLAGS: 00000046
RAX: 0000000000010002 RBX: ffff888078621340 RCX: 0000000000000000
RDX: ffff88807923bb80 RSI: ffffffff817398a1 RDI: ffff8880b992b884
RBP: ffff8880b992b940 R08: 0000000000000005 R09: 000000000000001f
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: ffff8880b992b840 R15: 0000000000000000
FS: 00007f6b67e59700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6b5d81e000 CR3: 000000007d615000 CR4: 0000000000350ee0
Call Trace:
__run_hrtimer kernel/time/hrtimer.c:1665 [inline]
__hrtimer_run_queues+0x4e0/0xbe0 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x320/0x7b0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200
Code: 96 f6 8e 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be a8 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1e fa 65 8b 05 6d 75 7f 7e 89 c1 48 8b 34 24 81 e1 00 01 00
RSP: 0018:ffffc9000afe76e0 EFLAGS: 00000212
RAX: 0000000000016902 RBX: 0000000000000200 RCX: ffffc9000be86000
RDX: 0000000000040000 RSI: ffffffff81685ea5 RDI: 0000000000000007
RBP: ffffffff8d264eb8 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000200 R11: 205d303335365420 R12: 0000000000000000
R13: ffffffff8d264e60 R14: dffffc0000000000 R15: 0000000000000001
console_emit_next_record arch/x86/include/asm/irqflags.h:42 [inline]
console_flush_all+0x61b/0xcc0 kernel/printk/printk.c:2933
console_unlock+0xb8/0x1f0 kernel/printk/printk.c:3007
vprintk_emit+0x1bd/0x600 kernel/printk/printk.c:2307
vprintk+0x84/0xa0 kernel/printk/printk_safe.c:50
_printk+0xbf/0xf0 kernel/printk/printk.c:2328
set_capacity_and_notify+0x1fb/0x2c0 block/genhd.c:85
loop_set_size drivers/block/loop.c:237 [inline]
loop_configure+0xe57/0x1880 drivers/block/loop.c:1100
lo_ioctl+0x930/0x1990 drivers/block/loop.c:1550
blkdev_ioctl+0x372/0x7f0 block/ioctl.c:615
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6b6708bf57
Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 c4 57 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6b67e58f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6b6708bf57
RDX: 0000000000000003 RSI: 0000000000004c00 RDI: 0000000000000004
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000001508
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6b67e58fdc R14: 00007f6b67e58fe0 R15: 0000000020003f82