net_ratelimit: 544 callbacks suppressed
net_ratelimit: 43 callbacks suppressed
net_ratelimit: 17 callbacks suppressed
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4960/1:b..l.. P12372/1:b..l..
rcu: (detected by 1, t=10503 jiffies, g=102065, q=297 ncpus=2)
task:syz-executor state:R running task stack:21256 pid:12372 tgid:12372 ppid:12368 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5581 [inline]
__schedule+0x1b47/0x5b40 kernel/sched/core.c:7384
preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7563
preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:201 [inline]
_raw_spin_unlock+0x41/0x50 kernel/locking/spinlock.c:213
spin_unlock include/linux/spinlock.h:401 [inline]
copy_pte_range mm/memory.c:1392 [inline]
copy_pmd_range+0x5176/0x5c00 mm/memory.c:1453
copy_pud_range mm/memory.c:1490 [inline]
copy_p4d_range mm/memory.c:1514 [inline]
copy_page_range+0xcc2/0x12b0 mm/memory.c:1600
dup_mmap+0xf17/0x1dc0 mm/mmap.c:1819
dup_mm kernel/fork.c:1542 [inline]
copy_mm+0x115/0x470 kernel/fork.c:1594
copy_process+0x1ea2/0x4430 kernel/fork.c:2310
kernel_clone+0x2d7/0x940 kernel/fork.c:2774
__do_sys_clone kernel/fork.c:2916 [inline]
__se_sys_clone kernel/fork.c:2900 [inline]
__x64_sys_clone+0x1b6/0x230 kernel/fork.c:2900
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f069d7c6bd2
RSP: 002b:00007ffd21607290 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffd21607290 RCX: 00007f069d7c6bd2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffd2160741c R08: 0000000000000000 R09: 0000000000000001
R10: 000055557ae2e7d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 00000000000ccc28 R15: 00007ffd21607470
task:syslogd state:R running task stack:22216 pid:4960 tgid:4960 ppid:1 task_flags:0x400000 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5581 [inline]
__schedule+0x1b47/0x5b40 kernel/sched/core.c:7384
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7664
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:524 [inline]
irqentry_exit+0x14f/0x920 kernel/entry/common.c:154
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:unwind_next_frame+0x48e/0x2550 arch/x86/kernel/unwind_orc.c:520
Code: d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 b4 19 00 00 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 bf 19 00 00 0f b6 43 01 <83> e0 07 0f 84 7c 16 00 00 83 f8 01 4c 8b 6c 24 50 49 bc 00 00 00
RSP: 0018:ffffc90002e37460 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffffff91a7352e RCX: ffffffff90f68dac
RDX: ffffffff91a7352a RSI: ffffffff91a7352a RDI: ffffffff8c6df620
RBP: ffffffff8a8af6a0 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90002e37558 R11: ffffffff81b31fe0 R12: dffffc0000000000
R13: ffffffff91a7352f R14: ffffc90002e37508 R15: ffffffff90f68dac
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:264 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:296
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2780 [inline]
slab_free mm/slub.c:6630 [inline]
kfree+0x1c5/0x650 mm/slub.c:6923
skb_kfree_head net/core/skbuff.c:1083 [inline]
skb_free_head net/core/skbuff.c:1095 [inline]
skb_release_data+0x82e/0xa80 net/core/skbuff.c:1122
skb_release_all net/core/skbuff.c:1197 [inline]
__kfree_skb+0x5d/0x210 net/core/skbuff.c:1211
__unix_dgram_recvmsg+0x9e1/0xd70 net/unix/af_unix.c:2672
sock_recvmsg_nosec net/socket.c:1154 [inline]
sock_recvmsg+0x196/0x1e0 net/socket.c:1176
sock_read_iter+0x22a/0x2f0 net/socket.c:1245
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x595/0xa80 fs/read_write.c:574
ksys_read+0x150/0x270 fs/read_write.c:716
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd3c0186407
RSP: 002b:00007fffab9b4740 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fd3c0036c80 RCX: 00007fd3c0186407
RDX: 00000000000000ff RSI: 0000563b0e8eb950 RDI: 0000000000000000
RBP: 0000563b0e8eb910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000563b0e8eb9cc
R13: 0000000000000000 R14: 0000563b0e8eb950 R15: 0000563adfb33d98
rcu: rcu_preempt kthread starved for 10503 jiffies! g102065 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->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:27496 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5581 [inline]
__schedule+0x1b47/0x5b40 kernel/sched/core.c:7384
__schedule_loop kernel/sched/core.c:7461 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7476
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x1230 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9c/0x340 kernel/rcu/tree.c:2330
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G L Y syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP, [Y]=FORCED_BIND
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: 4b 85 02 e9 03 18 03 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 43 09 1e 00 fb f4 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffc900001c7e40 EFLAGS: 00000242
RAX: 0000000000ec0ddf RBX: ffffffff819c16bc RCX: 8000000000000001
RDX: 0000000000000001 RSI: ffffffff8e43d4e5 RDI: ffffffff8c6df680
RBP: ffffc900001c7f10 R08: ffff8880b8733e5b R09: 1ffff110170e67cb
R10: dffffc0000000000 R11: ffffed10170e67cc R12: 0000000000000000
R13: 1ffff11003cd83e8 R14: 1ffff92000038fd0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888124dbd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c282808 CR3: 000000004c740000 CR4: 00000000003526f0
Call Trace:
arch_safe_halt arch/x86/kernel/process.c:767 [inline]
default_idle+0x9/0x20 arch/x86/kernel/process.c:768
default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:199 [inline]
do_idle+0x1cc/0x540 kernel/sched/idle.c:355
cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:454
start_secondary+0x101/0x110 arch/x86/kernel/smpboot.c:312
common_startup_64+0x13e/0x157