rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P19526/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=125105, q=264 ncpus=2)
task:syz-executor.3 state:R running task stack:26136 pid:19526 tgid:19523 ppid:15156 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7068
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:sctp_bind_addr_state+0xe1/0x1b0 net/sctp/bind_addr.c:413
Code: 00 74 08 4c 89 e7 e8 de 44 3d f7 4d 8b 1c 24 48 8d 7b 20 48 8b 74 24 08 e8 2c de cd 00 89 c5 31 ff 89 c6 e8 61 a9 d8 f6 85 ed <75> 62 e8 18 a5 d8 f6 eb 05 e8 11 a5 d8 f6 48 89 d8 48 c1 e8 03 42
RSP: 0018:ffffc900128af818 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff8880224c4b80 RCX: 0000000000040000
RDX: ffff888061d4da00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8abd59bf R09: ffffffff8ab743da
R10: 0000000000000002 R11: ffffffff8ab78a60 R12: ffffffff8f7c0390
R13: ffff8880224c4bbd R14: dffffc0000000000 R15: ffff888067e74088
sctp_copy_local_addr_list+0x2d7/0x500 net/sctp/protocol.c:162
sctp_bind_addr_copy+0xad/0x3b0 net/sctp/bind_addr.c:56
sctp_connect_new_asoc+0x2f3/0x6c0 net/sctp/socket.c:1095
sctp_sendmsg_new_asoc net/sctp/socket.c:1693 [inline]
sctp_sendmsg+0x219a/0x3520 net/sctp/socket.c:2004
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x1a6/0x270 net/socket.c:745
__sys_sendto+0x3a4/0x4f0 net/socket.c:2191
__do_sys_sendto net/socket.c:2203 [inline]
__se_sys_sendto net/socket.c:2199 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2199
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc988e7dea9
RSP: 002b:00007fc989c460c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fc988fabf80 RCX: 00007fc988e7dea9
RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000008
RBP: 00007fc988eca4a4 R08: 00000000200000c0 R09: 000000000000001c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000004d R14: 00007fc988fabf80 R15: 00007ffcf00a3508
rcu: rcu_preempt kthread starved for 10536 jiffies! g125105 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:25296 pid:16 tgid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2582
rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:1663
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1862
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 19513 Comm: syz-executor.5 Not tainted 6.9.0-rc5-syzkaller-00329-g5d12ed4bea43 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:mark_lock+0xa2/0x350 kernel/locking/lockdep.c:4656
Code: 00 8b 1b 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 00 55 f3 92 be 08 00 00 00 e8 16 b3 87 00 48 0f a3 1d 1e 67 80 11 <73> 10 48 69 c3 c8 00 00 00 48 8d 98 00 b4 c1 92 eb 68 48 c7 c0 60
RSP: 0018:ffffc9001242f5a8 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8172edda
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92f35500
RBP: 0000000000000008 R08: ffffffff92f35507 R09: 1ffffffff25e6aa0
R10: dffffc0000000000 R11: fffffbfff25e6aa1 R12: 0000000000000001
R13: dffffc0000000000 R14: 0000000000000100 R15: ffff888020874728
FS: 00007fdb9ab306c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1002ad9ae6 CR3: 00000000619c2000 CR4: 0000000000350ef0
Call Trace:
mark_usage kernel/locking/lockdep.c:4599 [inline]
__lock_acquire+0xc0a/0x1fd0 kernel/locking/lockdep.c:5091
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
debug_object_activate+0x16d/0x510 lib/debugobjects.c:708
debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
debug_activate kernel/time/hrtimer.c:478 [inline]
enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1090
__hrtimer_start_range_ns kernel/time/hrtimer.c:1265 [inline]
hrtimer_start_range_ns+0xaa0/0xc60 kernel/time/hrtimer.c:1305
posixtimer_rearm+0x1b4/0x3f0 kernel/time/posix-timers.c:267
dequeue_signal+0x249/0x5a0 kernel/signal.c:696
get_signal+0x602/0x1740 kernel/signal.c:2790
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb99e7dea7
Code: 14 25 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
RSP: 002b:00007fdb9ab300c8 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007fdb99fabf80 RCX: 00007fdb99e7dea9
RDX: 0000000000000000 RSI: 0000800000000006 RDI: 0000000020001300
RBP: 00007fdb99eca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000004d R14: 00007fdb99fabf80 R15: 00007ffc3629b728