rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P7104/2:b..l P4644/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=23769, q=1251887 ncpus=2)
task:jbd2/sda1-8 state:R running task stack:24240 pid:4644 tgid:4644 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6997
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__outw arch/x86/include/asm/shared/io.h:23 [inline]
RIP: 0010:iowrite16+0x37/0x90 lib/iomap.c:213
Code: 88 d3 fc 48 81 fb 00 00 04 00 72 0a e8 92 88 d3 fc 66 89 2b eb 59 48 81 fb 01 00 01 00 72 0d e8 7f 88 d3 fc 89 e8 89 da 66 ef 43 8b 2d 71 88 48 0a 31 ff 89 ee e8 a8 8c d3 fc 85 ed 74 2b e8
RSP: 0018:ffffc9000e19ee98 EFLAGS: 00000293
RAX: 0000000000000002 RBX: 000000000001c010 RCX: ffff88802f719e00
RDX: 000000000001c010 RSI: 000000000001c010 RDI: 0000000000000002
RBP: 0000000000000002 R08: ffffffff853280cf R09: 1ffffffff2039cad
R10: dffffc0000000000 R11: ffffffff8533db00 R12: 1ffff11004ace948
R13: 1ffff92001c33df0 R14: dffffc0000000000 R15: dffffc0000000000
vp_notify+0x57/0x80 drivers/virtio/virtio_pci_common.c:45
virtqueue_notify+0x6a/0xd0 drivers/virtio/virtio_ring.c:2370
virtscsi_add_cmd+0x5fc/0x6e0 drivers/scsi/virtio_scsi.c:512
virtscsi_queuecommand+0x694/0xaf0 drivers/scsi/virtio_scsi.c:602
scsi_dispatch_cmd drivers/scsi/scsi_lib.c:1608 [inline]
scsi_queue_rq+0x1d7c/0x2e90 drivers/scsi/scsi_lib.c:1850
blk_mq_dispatch_rq_list+0xb89/0x1b30 block/blk-mq.c:2032
__blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
__blk_mq_sched_dispatch_requests+0xb8a/0x1840 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xcb/0x140 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x9a5/0xae0 block/blk-mq.c:2245
blk_mq_flush_plug_list+0x1127/0x1890 block/blk-mq.c:2797
__blk_flush_plug+0x420/0x500 block/blk-core.c:1199
blk_finish_plug+0x5e/0x80 block/blk-core.c:1226
jbd2_journal_commit_transaction+0x34ec/0x67e0 fs/jbd2/commit.c:794
kjournald2+0x41c/0x7b0 fs/jbd2/journal.c:201
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
task:syz.3.390 state:R running task stack:24408 pid:7104 tgid:7100 ppid:5245 flags:0x20000000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6854
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6878
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__local_bh_enable_ip+0x179/0x200 kernel/softirq.c:389
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline]
__dev_queue_xmit+0x1764/0x3e80 net/core/dev.c:4451
dev_queue_xmit include/linux/netdevice.h:3094 [inline]
neigh_hh_output include/net/neighbour.h:526 [inline]
neigh_output include/net/neighbour.h:540 [inline]
ip_finish_output2+0xd41/0x1390 net/ipv4/ip_output.c:236
ip_local_out net/ipv4/ip_output.c:130 [inline]
__ip_queue_xmit+0x118c/0x1b80 net/ipv4/ip_output.c:536
__tcp_transmit_skb+0x2544/0x3b30 net/ipv4/tcp_output.c:1466
tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline]
tcp_send_syn_data net/ipv4/tcp_output.c:4059 [inline]
tcp_connect+0x2c21/0x4940 net/ipv4/tcp_output.c:4145
tcp_v4_connect+0x1127/0x1ba0 net/ipv4/tcp_ipv4.c:341
__inet_stream_connect+0x262/0xf30 net/ipv4/af_inet.c:679
tcp_sendmsg_fastopen+0x3a2/0x5d0 net/ipv4/tcp.c:1038
tcp_sendmsg_locked+0x4a23/0x50a0 net/ipv4/tcp.c:1090
tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1357
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x1a6/0x270 net/socket.c:745
__sys_sendto+0x39b/0x4f0 net/socket.c:2210
__do_sys_sendto net/socket.c:2222 [inline]
__se_sys_sendto net/socket.c:2218 [inline]
__ia32_sys_sendto+0xdd/0x100 net/socket.c:2218
do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
__do_fast_syscall_32+0xb4/0x110 arch/x86/entry/common.c:386
do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f35579
RSP: 002b:00000000f567456c EFLAGS: 00000206 ORIG_RAX: 0000000000000171
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000200007fd RDI: 0000000020e68000
RBP: 0000000000000010 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10581 jiffies! g23769 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:25952 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.11.0-syzkaller-10622-gaa486552a110 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:89 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x8c/0x290 mm/kasan/generic.c:189
Code: 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 0f 85 c9 01 00 00 <49> ff c3 48 ff c5 75 ee e9 1e 01 00 00 45 89 dc 41 83 e4 07 0f 84
RSP: 0018:ffffc900001e70d0 EFLAGS: 00000246
RAX: ffffffff8a146f01 RBX: 1ffff9200003ce3e RCX: ffffffff8a146fcd
RDX: 0000000000000001 RSI: 0000000000000038 RDI: ffffc900001e71f0
RBP: fffffffffffffffa R08: ffffc900001e7227 R09: 1ffff9200003ce44
R10: dffffc0000000000 R11: fffff5200003ce3f R12: ffffc900001e73b0
R13: ffffc900001e71e0 R14: dffffc0000000001 R15: fffff5200003ce45
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f51122e2 CR3: 000000006fe34000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__asan_memset+0x23/0x50 mm/kasan/shadow.c:84
ip_vs_conn_in_get_proto+0xbd/0x690 net/netfilter/ipvs/ip_vs_conn.c:339
ip_vs_in_hook+0x688/0x2280 net/netfilter/ipvs/ip_vs_core.c:1994
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312
NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
__netif_receive_skb_one_core net/core/dev.c:5662 [inline]
__netif_receive_skb+0x2bf/0x650 net/core/dev.c:5775
process_backlog+0x662/0x15b0 net/core/dev.c:6107
__napi_poll+0xcb/0x490 net/core/dev.c:6771
napi_poll net/core/dev.c:6840 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6962
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
run_ksoftirqd+0xca/0x130 kernel/softirq.c:927
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244