sched: RT throttling activated
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5224/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=7329, q=97 ncpus=2)
task:syz-executor.4 state:R running task stack:22784 pid:5224 ppid:5134 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6625
preempt_schedule_irq+0xfb/0x1b0 kernel/sched/core.c:6937
irqentry_exit+0x57/0x80 kernel/entry/common.c:433
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:filemap_get_read_batch+0x699/0xc90 mm/filemap.c:2397
Code: 7d a3 25 00 4c 89 ac 24 88 00 00 00 bf 40 00 00 00 44 89 e6 e8 a8 e4 cf ff 41 80 fc 3f 0f 87 90 01 00 00 e8 09 e2 cf ff eb 29 02 e2 cf ff 48 8b 44 24 40 42 80 3c 30 00 48 8b 5c 24 18 74 08
RSP: 0018:ffffc90004f57320 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8880200aba80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004f57450 R08: ffffffff81ba8674 R09: fffff94000353f69
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0001a9fb40
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffffd4000353f69
filemap_get_pages+0x327/0x20c0 mm/filemap.c:2594
filemap_read+0x45a/0x1170 mm/filemap.c:2693
call_read_iter include/linux/fs.h:1845 [inline]
generic_file_splice_read+0x240/0x640 fs/splice.c:402
do_splice_to fs/splice.c:885 [inline]
splice_direct_to_actor+0x40c/0xbd0 fs/splice.c:956
do_splice_direct+0x283/0x3d0 fs/splice.c:1065
do_sendfile+0x620/0xff0 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1317 [inline]
__se_sys_sendfile64+0x100/0x1e0 fs/read_write.c:1309
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x45f679
RSP: 002b:00007f69d57a01a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 000000000052bf00 RCX: 000000000045f679
RDX: 0000000020000000 RSI: 0000000000000003 RDI: 0000000000000003
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 00008080fffffffe R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004f0998 R14: 00000000004b0443 R15: 00007f69d57a06bc
rcu: rcu_preempt kthread starved for 10537 jiffies! g7329 f0x0 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:26552 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6625
schedule+0xc3/0x180 kernel/sched/core.c:6701
schedule_timeout+0x1bd/0x310 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x2c6/0x1010 kernel/rcu/tree.c:1608
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1807
kthread+0x270/0x300 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5231 Comm: syz-executor.0 Not tainted 6.3.0-rc6-syzkaller-00046-gde4664485abb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x0/0x90 kernel/kcov.c:305
Code: 89 11 48 c7 44 0a 08 03 00 00 00 48 89 44 0a 10 48 89 74 0a 18 4c 89 44 0a 20 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 0f 1e fa 4c 8b 04 24 65 48 8b 15 e0 47 79 7e 65 8b 05 e1 47 79
RSP: 0018:ffffc900001e0e88 EFLAGS: 00000046
RAX: ffffffff817d71e2 RBX: 0000002b50565227 RCX: ffff88807e7b9d40
RDX: 0000000080010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000003 R08: ffffffff817d71d8 R09: ffffed10173256e1
R10: 0000000000000000 R11: dffffc0000000001 R12: 7fffffffffffffff
R13: ffff8880b992b700 R14: ffff8880b99281c0 R15: 0000000000000000
FS: 00007ff189aa9700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000730004 CR3: 000000006905b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tick_program_event+0x8c/0x120 kernel/time/tick-oneshot.c:44
hrtimer_interrupt+0x54a/0x980 kernel/time/hrtimer.c:1824
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
__sysvec_apic_timer_interrupt+0x13f/0x480 arch/x86/kernel/apic/apic.c:1113
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1107
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:iter_file_splice_write+0x256/0xfe0 fs/splice.c:717
Code: e8 6f da e2 ff 48 8b 54 24 40 48 c7 84 24 40 01 00 00 00 00 00 00 48 89 d0 48 c1 e8 03 48 89 84 24 a8 00 00 00 42 0f b6 04 20 <84> c0 0f 85 12 0d 00 00 48 63 1a b9 10 00 00 00 48 89 d8 48 f7 e1
RSP: 0018:ffffc90004f37800 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: 0000000000038498 RCX: ffffc90004f37920
RDX: ffff88802a295938 RSI: 1ffff920009e6fbc RDI: ffffc90004f37940
RBP: ffffc90004f37a30 R08: 0000000000000004 R09: fffffbfff205b64d
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffffc90004f37c60 R14: 0000000000000004 R15: ffff88802b410280
do_splice_from fs/splice.c:856 [inline]
direct_splice_actor+0xe7/0x1c0 fs/splice.c:1022
splice_direct_to_actor+0x4c4/0xbd0 fs/splice.c:977
do_splice_direct+0x283/0x3d0 fs/splice.c:1065
do_sendfile+0x620/0xff0 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1317 [inline]
__se_sys_sendfile64+0x100/0x1e0 fs/read_write.c:1309
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x45f679
Code: 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff189aa91a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 000000000052bfa0 RCX: 000000000045f679
RDX: 0000000020000000 RSI: 0000000000000003 RDI: 0000000000000003
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 00008080fffffffe R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004f0998 R14: 00000000004b0443 R15: 00007ff189aa96bc
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.054 msecs