rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2664 jiffies s: 279149 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10966 Comm: syz-executor.1 Not tainted 6.10.0-rc3-next-20240611-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:io_serial_in+0x76/0xb0 drivers/tty/serial/8250/8250_port.c:406
Code: 60 c8 54 fc 89 e9 41 d3 e6 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 11 d7 ba fc 44 03 33 44 89 f2 ec <0f> b6 c0 5b 41 5e 41 5f 5d c3 cc cc cc cc 89 e9 80 e1 07 38 c1 7c
RSP: 0018:ffffc90000007228 EFLAGS: 00000002
RAX: 1ffffffff295e400 RBX: ffffffff94af23a0 RCX: 0000000000000000
RDX: 00000000000003fd RSI: 0000000000000000 RDI: 0000000000000020
RBP: 0000000000000000 R08: ffffffff853e7f86 R09: 1ffff11003f91046
R10: dffffc0000000000 R11: ffffffff853e7f40 R12: ffffffff94af2632
R13: ffffffff94af2632 R14: 00000000000003fd R15: dffffc0000000000
FS: 00007f2e700156c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4515b86fe0 CR3: 000000006a5de000 CR4: 00000000003506f0
Call Trace:
serial_in drivers/tty/serial/8250/8250.h:137 [inline]
serial_lsr_in drivers/tty/serial/8250/8250.h:159 [inline]
wait_for_lsr drivers/tty/serial/8250/8250_port.c:2068 [inline]
wait_for_xmitr+0x151/0x360 drivers/tty/serial/8250/8250_port.c:2086
serial8250_console_write+0xe74/0x1ed0 drivers/tty/serial/8250/8250_port.c:3401
console_emit_next_record kernel/printk/printk.c:2975 [inline]
console_flush_all+0x880/0xf50 kernel/printk/printk.c:3047
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3118
vprintk_emit+0x7a1/0x900 kernel/printk/printk.c:2420
_printk+0xd5/0x120 kernel/printk/printk.c:2447
printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
show_trace_log_lvl+0x43a/0x520 arch/x86/kernel/dumpstack.c:285
sched_show_task+0x578/0x740 kernel/sched/core.c:7432
report_rtnl_holders+0x1ba/0x2d0 net/core/rtnetlink.c:104
call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792
expire_timers kernel/time/timer.c:1843 [inline]
__run_timers kernel/time/timer.c:2417 [inline]
__run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428
run_timer_base kernel/time/timer.c:2437 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:io_cqring_wait io_uring/io_uring.c:2496 [inline]
RIP: 0010:__do_sys_io_uring_enter io_uring/io_uring.c:3289 [inline]
RIP: 0010:__se_sys_io_uring_enter+0x18c3/0x2670 io_uring/io_uring.c:3181
Code: e8 03 42 0f b6 04 20 84 c0 48 8b 54 24 10 0f 85 26 04 00 00 80 23 f7 48 8d 1d 00 00 00 00 48 89 d0 48 c1 e8 03 42 80 3c 20 00 <74> 0f 48 8b 7c 24 10 e8 21 7f 54 fd 48 8b 54 24 10 48 89 1a 48 8b
RSP: 0018:ffffc9000c367c60 EFLAGS: 00000246
RAX: 1ffff110041d76ad RBX: ffffffff84a4d877 RCX: 0000000000040000
RDX: ffff888020ebb568 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9000c367f00 R08: ffffffff84a4d5ab R09: 1ffff110041d73c3
R10: dffffc0000000000 R11: ffffed10041d73c4 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff8880691a2000 R15: ffff8880691a22d0
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2e6f27cea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2e700150c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f2e6f3b3f80 RCX: 00007f2e6f27cea9
RDX: 00000000000045d0 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007f2e6f2ebff4 R08: 0000000000000000 R09: 0000000001000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f2e6f3b3f80 R15: 00007ffd8bc5f6b8
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6724
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8db/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
__sys_sendto+0x3a4/0x4f0 net/socket.c:2192
__do_sys_sendto net/socket.c:2204 [inline]
__se_sys_sendto net/socket.c:2200 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2200
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4d9227eb9c
RSP: 002b:00007fffcecb4310 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f4d92ee4620 RCX: 00007f4d9227eb9c
RDX: 0000000000000058 RSI: 00007f4d92ee4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fffcecb4364 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f4d92ee4670 R15: 0000000000000000
DEBUG: waiting rtnl_mutex for 4555 jiffies.
task:kworker/0:5 state:D stack:19640 pid:5171 tgid:5171 ppid:2 flags:0x00004000
Workqueue: infiniband ib_cache_event_task
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
ib_get_eth_speed+0x153/0x800 drivers/infiniband/core/verbs.c:1983
rxe_query_port+0x76/0x260 drivers/infiniband/sw/rxe/rxe_verbs.c:55
__ib_query_port drivers/infiniband/core/device.c:2067 [inline]
ib_query_port+0x166/0x7d0 drivers/infiniband/core/device.c:2099
ib_cache_update+0x1a9/0xb80 drivers/infiniband/core/cache.c:1494
ib_cache_event_task+0xf3/0x1e0 drivers/infiniband/core/cache.c:1568
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409