rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4224/1:b..l
(detected by 1, t=10503 jiffies, g=12477, q=35 ncpus=2)
task:syz.0.192 state:R running task stack:24728 pid:4224 ppid:3726 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0x142d/0x4550 kernel/sched/core.c:6558
preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6727
preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6751
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
_raw_spin_unlock_irq+0x3c/0x40 kernel/locking/spinlock.c:202
spin_unlock_irq include/linux/spinlock.h:401 [inline]
loop_queue_work drivers/block/loop.c:896 [inline]
loop_queue_rq+0xa02/0xaf0 drivers/block/loop.c:1876
__blk_mq_issue_directly block/blk-mq.c:2622 [inline]
__blk_mq_try_issue_directly+0x4fe/0x820 block/blk-mq.c:2675
blk_mq_try_issue_directly+0x28/0x1f0 block/blk-mq.c:2699
blk_mq_submit_bio+0x1402/0x2300 block/blk-mq.c:3045
__submit_bio+0x261/0x2f0 block/blk-core.c:590
__submit_bio_noacct_mq block/blk-core.c:667 [inline]
submit_bio_noacct_nocheck+0x976/0xd10 block/blk-core.c:696
submit_bio_wait+0x102/0x200 block/bio.c:1319
xfs_rw_bdev+0x2d0/0x2f0 fs/xfs/xfs_bio_io.c:53
xlog_do_io+0x167/0x330 fs/xfs/xfs_log_recover.c:140
xlog_bread+0x30/0xc0 fs/xfs/xfs_log_recover.c:171
xlog_rseek_logrec_hdr+0x146/0x530 fs/xfs/xfs_log_recover.c:787
xlog_find_tail+0x262/0xf80 fs/xfs/xfs_log_recover.c:1280
xlog_recover+0xd9/0x560 fs/xfs/xfs_log_recover.c:3361
xfs_log_mount+0x3d1/0x700 fs/xfs/xfs_log.c:733
xfs_mountfs+0xcbb/0x1f00 fs/xfs/xfs_mount.c:819
xfs_fs_fill_super+0x1145/0x13a0 fs/xfs/xfs_super.c:1681
get_tree_bdev+0x3fe/0x620 fs/super.c:1355
vfs_get_tree+0x88/0x270 fs/super.c:1562
do_new_mount+0x2ba/0xb40 fs/namespace.c:3051
do_mount fs/namespace.c:3394 [inline]
__do_sys_mount fs/namespace.c:3602 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3579
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7f9337761a
RSP: 002b:00007f7f940d1e78 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f7f940d1f00 RCX: 00007f7f9337761a
RDX: 0000000020009580 RSI: 00000000200095c0 RDI: 00007f7f940d1ec0
RBP: 0000000020009580 R08: 00007f7f940d1f00 R09: 0000000000008080
R10: 0000000000008080 R11: 0000000000000206 R12: 00000000200095c0
R13: 00007f7f940d1ec0 R14: 000000000000957a R15: 0000000020009600
rcu: rcu_preempt kthread starved for 10542 jiffies! g12477 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:26688 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0x142d/0x4550 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
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: 4262 Comm: syz.3.202 Not tainted 6.1.96-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:147 [inline]
RIP: 0010:wrmsr arch/x86/include/asm/msr.h:254 [inline]
RIP: 0010:native_apic_msr_write+0x35/0x50 arch/x86/include/asm/apic.h:206
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 89 f6 31 d2 e9 df c6 28 03 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc90000007e60 EFLAGS: 00000046
RAX: 0000000000070a41 RBX: ffffffff8cb15a20 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 0000000000070a41 RDI: 0000000000000838
RBP: 0000000000070a41 R08: ffffffff817cdafd R09: fffffbfff1ce7046
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b98271c0
R13: dffffc0000000000 R14: 0000000000070a41 R15: dffffc0000000000
FS: 00007f60de9196c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31d0eff8 CR3: 000000005e7f9000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
apic_write arch/x86/include/asm/apic.h:394 [inline]
lapic_next_event+0x5b/0x70 arch/x86/kernel/apic/apic.c:478
clockevents_program_event+0x1c5/0x310 kernel/time/clockevents.c:334
hrtimer_interrupt+0x546/0x980 kernel/time/hrtimer.c:1825
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: f1 bc f5 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 0e 30 d5 f6 48 89 df e8 76 6d d6 f6 e8 c1 f9 fb f6 fb bf 01 00 00 00 e6 05 c9 f6 65 8b 05 87 12 6d 75 85 c0 74 02 5b c3 e8 34 36 6b
RSP: 0018:ffffc9000a5cfb30 EFLAGS: 00000286
RAX: 7f38f2cb214a8100 RBX: ffff88807a35ef00 RCX: ffffffff91c94103
RDX: dffffc0000000000 RSI: ffffffff8aec0240 RDI: 0000000000000001
RBP: ffffc9000a5cfc70 R08: dffffc0000000000 R09: ffffed100f46bde1
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100f46be73
R13: 000000001c000004 R14: 0000000000000021 R15: ffff88807a35f398
spin_unlock_irq include/linux/spinlock.h:401 [inline]
get_signal+0x154b/0x17d0 kernel/signal.c:2865
arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f60ddb75f17
Code: ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89
RSP: 002b:00007f60de9190f8 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007f60ddd03f68 RCX: 00007f60ddb75f19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f60ddd03f68
RBP: 00007f60ddd03f60 R08: 00007f60de9196c0 R09: 00007f60de9196c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f60ddd03f6c
R13: 000000000000000b R14: 00007ffd28d68010 R15: 00007ffd28d680f8
sched: RT throttling activated