rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8439/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=29805, q=391 ncpus=2)
task:syz.1.956 state:R running task stack:24672 pid:8439 tgid:8439 ppid:7759 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
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:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:244 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0x90 kernel/kcov.c:313
Code: 44 0a 20 e9 b5 b0 5c 0a 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 4c 8b 04 24 <65> 48 8b 14 25 00 d7 03 00 65 8b 05 80 46 70 7e 25 00 01 ff 00 74
RSP: 0018:ffffc9000344f698 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88807cd21e00
RDX: ffff88807cd21e00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000344f890 R08: ffffffff8baccac4 R09: ffffffff8baccb75
R10: 0000000000000003 R11: ffff88807cd21e00 R12: 1ffff92000689ef7
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff888022b4d8b8
mt_locked lib/maple_tree.c:781 [inline]
mt_slot lib/maple_tree.c:788 [inline]
mas_slot lib/maple_tree.c:821 [inline]
mt_validate_nulls lib/maple_tree.c:7542 [inline]
mt_validate+0x42c4/0x4aa0 lib/maple_tree.c:7596
validate_mm+0xe7/0x530 mm/mmap.c:329
__split_vma+0xaca/0xc30 mm/mmap.c:2511
split_vma mm/mmap.c:2537 [inline]
vma_modify+0x268/0x350 mm/mmap.c:2578
vma_modify_flags include/linux/mm.h:3309 [inline]
mprotect_fixup+0x3ea/0xa90 mm/mprotect.c:639
do_mprotect_pkey+0x908/0xe00 mm/mprotect.c:822
__do_sys_mprotect mm/mprotect.c:843 [inline]
__se_sys_mprotect mm/mprotect.c:840 [inline]
__x64_sys_mprotect+0x80/0x90 mm/mprotect.c:840
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: 0033:0x7f11d6779fb7
RSP: 002b:00007fff4abf7028 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f11d76146c0 RCX: 00007f11d6779fb7
RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f11d75f5000
RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000021000 R11: 0000000000000206 R12: 00007fff4abf7180
R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10538 jiffies! g29805 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:24976 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
kthread+0x2f2/0x390 kernel/kthread.c:389
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8429 Comm: syz.0.955 Not tainted 6.11.0-rc5-syzkaller-00057-g86987d84b968 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:unwind_get_return_address+0x4b/0xc0 arch/x86/kernel/unwind_orc.c:369
Code: e8 03 42 0f b6 04 30 84 c0 75 72 8b 2b 31 ff 89 ee e8 a9 6a 52 00 85 ed 74 4a 48 83 c3 48 49 89 df 49 c1 ef 03 43 80 3c 37 00 <74> 08 48 89 df e8 1b a9 b9 00 48 8b 3b e8 63 70 1e 00 89 c5 31 ff
RSP: 0018:ffffc900034af718 EFLAGS: 00000046
RAX: 0000000000000002 RBX: ffffc900034af788 RCX: 0000000000040000
RDX: ffff88807c1c1e00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff814125c7 R09: ffffffff814140bf
R10: 0000000000000003 R11: ffff88807c1c1e00 R12: ffff88807c1c1e00
R13: ffffffff817f2f00 R14: dffffc0000000000 R15: 1ffff92000695ef1
FS: 00007fc0de5ff6c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f11d6915f8c CR3: 000000006853c000 CR4: 0000000000350ef0
Call Trace:
arch_stack_walk+0x125/0x1b0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3988 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044
__sigqueue_alloc+0x42e/0x540 kernel/signal.c:428
__send_signal_locked+0x22f/0xdc0 kernel/signal.c:1119
do_send_sig_info kernel/signal.c:1301 [inline]
group_send_sig_info+0x292/0x310 kernel/signal.c:1451
bpf_send_signal_common+0x2dd/0x430 kernel/trace/bpf_trace.c:881
____bpf_send_signal kernel/trace/bpf_trace.c:886 [inline]
bpf_send_signal+0x19/0x30 kernel/trace/bpf_trace.c:884
bpf_prog_7ba5217f62dcd359+0x40/0x48
bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline]
__bpf_prog_run include/linux/filter.h:691 [inline]
bpf_prog_run include/linux/filter.h:698 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2406 [inline]
bpf_trace_run2+0x2ee/0x540 kernel/trace/bpf_trace.c:2447
trace_sys_enter+0x93/0xd0 include/trace/events/syscalls.h:18
syscall_trace_enter+0xf8/0x150 kernel/entry/common.c:61
syscall_enter_from_user_mode_work include/linux/entry-common.h:168 [inline]
syscall_enter_from_user_mode include/linux/entry-common.h:198 [inline]
do_syscall_64+0xcc/0x230 arch/x86/entry/common.c:79
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc0deb15849
Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25
RSP: 002b:00007fc0de5feb40 EFLAGS: 00000246 ORIG_RAX: 000000000000000f
RAX: ffffffffffffffda RBX: 00007fc0ded15f88 RCX: 00007fc0deb15849
RDX: 00007fc0de5feb40 RSI: 00007fc0de5fec70 RDI: 0000000000000011
RBP: 00007fc0ded15f80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc0ded15f8c
R13: 0000000000000000 R14: 00007ffdeafcd4f0 R15: 00007ffdeafcd5d8