INFO: rcu detected stall in sys_process_vm_writev (2)

Status: auto-obsoleted due to no activity on 2023/09/24 05:04
Subsystems: block cgroups
[Documentation on labels]
First crash: 1145d, last: 1145d
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in sys_process_vm_writev (3) cgroups block 1 1 789d 789d 0/29 auto-obsoleted due to no activity on 2024/09/14 02:49
upstream INFO: rcu detected stall in sys_process_vm_writev mm 1 2 1810d 1843d 0/29 auto-closed as invalid on 2021/11/28 06:21
linux-4.19 BUG: soft lockup in sys_process_vm_writev 1 1 1465d 1465d 0/1 auto-obsoleted due to no activity on 2022/12/08 06:45

Sample crash report:
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P8241/1:b..l
rcu: 	(detected by 1, t=10503 jiffies, g=355485, q=132 ncpus=2)
task:syz-executor.3  state:R  running task     stack:26256 pid:8241  ppid:5056   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0xc9a/0x5880 kernel/sched/core.c:6669
 preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:6981
 irqentry_exit+0x35/0x80 kernel/entry/common.c:433
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_is_held_type+0x0/0x140 kernel/locking/lockdep.c:5761
Code: 48 c7 c6 40 6d 4c 8a 48 c7 c7 a0 6a 4c 8a 89 44 24 04 e8 83 36 3b f7 0f 0b 8b 44 24 04 eb bd 66 66 2e 0f 1f 84 00 00 00 00 00 <f3> 0f 1e fa 41 57 41 56 41 55 41 bd ff ff ff ff 41 54 55 53 48 83
RSP: 0018:ffffc900056df3c0 EFLAGS: 00000246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9000dc4c000
RDX: 0000000000040000 RSI: 00000000ffffffff RDI: ffffffff8c7e1998
RBP: ffff888022570000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000094001 R12: ffff88814ba27800
R13: 00000000202ca000 R14: ffffea0001386fc0 R15: 00fff00000000000
 lock_is_held include/linux/lockdep.h:288 [inline]
 task_css include/linux/cgroup.h:437 [inline]
 blkcg_css.part.0+0xd2/0x1d0 block/blk-cgroup.c:110
 blkcg_css block/blk-cgroup.c:2118 [inline]
 blk_cgroup_congested+0x11b/0x2a0 block/blk-cgroup.c:2116
 __folio_throttle_swaprate+0x82/0x2a0 mm/swapfile.c:3647
 folio_throttle_swaprate include/linux/swap.h:663 [inline]
 wp_page_copy mm/memory.c:3100 [inline]
 do_wp_page+0xde5/0x33c0 mm/memory.c:3432
 handle_pte_fault mm/memory.c:4964 [inline]
 __handle_mm_fault+0x1635/0x41c0 mm/memory.c:5089
 handle_mm_fault+0x2af/0x9f0 mm/memory.c:5243
 faultin_page mm/gup.c:925 [inline]
 __get_user_pages+0x60a/0x10e0 mm/gup.c:1147
 __get_user_pages_locked mm/gup.c:1381 [inline]
 __gup_longterm_locked+0x720/0x2420 mm/gup.c:2079
 pin_user_pages_remote+0x101/0x160 mm/gup.c:3124
 process_vm_rw_single_vec mm/process_vm_access.c:105 [inline]
 process_vm_rw_core.constprop.0+0x43b/0x990 mm/process_vm_access.c:215
 process_vm_rw+0x29c/0x300 mm/process_vm_access.c:283
 __do_sys_process_vm_writev mm/process_vm_access.c:303 [inline]
 __se_sys_process_vm_writev mm/process_vm_access.c:298 [inline]
 __x64_sys_process_vm_writev+0xe3/0x1b0 mm/process_vm_access.c:298
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fefba28c389
RSP: 002b:00007fefbaf6d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000137
RAX: ffffffffffffffda RBX: 00007fefba3ac120 RCX: 00007fefba28c389
RDX: 0000000000000044 RSI: 0000000020c22000 RDI: 0000000000002c6f
RBP: 00007fefba2d7493 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000020c22fa0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fefba4cfb1f R14: 00007fefbaf6d300 R15: 0000000000022000
 </TASK>
rcu: rcu_preempt kthread starved for 9894 jiffies! g355485 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:28408 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0xc9a/0x5880 kernel/sched/core.c:6669
 schedule+0xde/0x1a0 kernel/sched/core.c:6745
 schedule_timeout+0x14e/0x2b0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1609
 rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1808
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x40/0x50 drivers/acpi/processor_idle.c:112
cdc_wdm 3-1:1.0: nonzero urb status received: -71
cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/06/26 04:59 upstream 547cc9be86f4 09ffe269 .config console log report info ci-upstream-kasan-gce INFO: rcu detected stall in sys_process_vm_writev
* Struck through repros no longer work on HEAD.