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INFO: rcu detected stall in sys_mprotect (6)

Status: auto-obsoleted due to no activity on 2023/04/20 15:51
Subsystems: kernel
[Documentation on labels]
First crash: 527d, last: 476d
▶ ▼ Similar bugs (7)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in sys_mprotect (3) kernel 3 1577d 1576d 0/26 closed as invalid on 2020/01/09 08:13
upstream INFO: rcu detected stall in sys_mprotect (2) kernel 1 1577d 1577d 0/26 closed as invalid on 2020/01/08 05:23
linux-5.15 INFO: rcu detected stall in sys_mprotect 1 6d17h 6d17h 0/3 upstream: reported on 2024/04/26 17:12
upstream INFO: rcu detected stall in sys_mprotect (5) kernel 1 795d 795d 0/26 auto-closed as invalid on 2022/05/29 03:15
upstream INFO: rcu detected stall in sys_mprotect (4) mm 1 860d 860d 0/26 closed as invalid on 2022/02/08 10:00
upstream INFO: rcu detected stall in sys_mprotect kernel 3 1613d 1613d 0/26 closed as invalid on 2019/12/04 14:04
upstream INFO: rcu detected stall in sys_mprotect (7) mm 9 107d 335d 0/26 auto-obsoleted due to no activity on 2024/04/15 19:55

Sample crash report:
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10500 ticks this GP) idle=dd4c/1/0x4000000000000000 softirq=59147/59147 fqs=0
	(t=10501 jiffies g=85873 q=79 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10500 jiffies! g85873 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=51195
rcu: rcu_preempt kthread starved for 10501 jiffies! g85873 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28360 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0xb8a/0x5450 kernel/sched/core.c:6555
 schedule+0xde/0x1b0 kernel/sched/core.c:6631
 schedule_timeout+0x14e/0x2a0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1654
 rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1853
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 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
CPU: 0 PID: 18749 Comm: modprobe Not tainted 6.1.0-syzkaller-13822-g6feb57c2fd7c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:121 [inline]
RIP: 0010:rcu_is_watching+0xd/0xb0 kernel/rcu/tree.c:713
Code: fa 48 c7 c7 40 dc 4d 8a e8 00 a7 9a 08 65 8a 05 55 b5 98 7e 0f b6 c0 c3 0f 1f 44 00 00 f3 0f 1e fa 55 53 65 ff 05 9b 9b 98 7e <e8> be a6 9a 08 48 c7 c3 28 60 03 00 83 f8 07 89 c5 77 7a 48 8d 3c
RSP: 0018:ffffc90000007e00 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffffffff8e72dcc0 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff81710a96 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: ffff8880b982b880 R14: ffff8880b982b780 R15: ffff88802012a340
FS:  00007ff84a942800(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32c2c000 CR3: 000000002a7a7000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 rcu_read_lock_held_common kernel/rcu/update.c:108 [inline]
 rcu_read_lock_sched_held+0x20/0x70 kernel/rcu/update.c:123
 trace_hrtimer_expire_entry include/trace/events/timer.h:235 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1682 [inline]
 __hrtimer_run_queues+0xac8/0xfb0 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x320/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
 __sysvec_apic_timer_interrupt+0x180/0x640 arch/x86/kernel/apic/apic.c:1113
 sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1107
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:write_comp_data+0x3c/0x90 kernel/kcov.c:236
Code: 01 00 00 49 89 f8 65 48 8b 14 25 00 ac 03 00 a9 00 01 ff 00 74 0e 85 f6 74 59 8b 82 6c 15 00 00 85 c0 74 4f 8b 82 48 15 00 00 <83> f8 03 75 44 48 8b 82 50 15 00 00 8b 92 4c 15 00 00 48 8b 38 48
RSP: 0018:ffffc9000361f560 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007ff84ac8d000 RCX: ffffffff81008092
RDX: ffff88805a75d7c0 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 0000000000000001 R08: 0000000000000007 R09: ffffffffff600000
R10: 00007ff84ac8d000 R11: 0000000000094001 R12: ffffc9000361f698
R13: 0000000000000000 R14: ffff88805a75d7c0 R15: 0000000000000dc0
 in_gate_area_no_mm+0x42/0x70 arch/x86/entry/vsyscall/vsyscall_64.c:345
 is_kernel_text include/linux/kallsyms.h:31 [inline]
 core_kernel_text+0x24/0xa0 kernel/extable.c:68
 kernel_text_address+0x11/0x80 kernel/extable.c:99
 __kernel_text_address+0xd/0x30 kernel/extable.c:79
 unwind_get_return_address arch/x86/kernel/unwind_orc.c:342 [inline]
 unwind_get_return_address+0x55/0xa0 arch/x86/kernel/unwind_orc.c:337
 arch_stack_walk+0x97/0xf0 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x90/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 __kasan_slab_alloc+0x82/0x90 mm/kasan/common.c:325
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slab.h:761 [inline]
 kmem_cache_alloc_bulk+0x418/0x840 mm/slub.c:4033
 mt_alloc_bulk lib/maple_tree.c:157 [inline]
 mas_alloc_nodes+0x309/0x810 lib/maple_tree.c:1256
 mas_node_count_gfp lib/maple_tree.c:1315 [inline]
 mas_preallocate+0x1bb/0x360 lib/maple_tree.c:5722
 __vma_adjust+0x192/0x1ae0 mm/mmap.c:715
 vma_adjust include/linux/mm.h:2793 [inline]
 __split_vma+0x2a9/0x5e0 mm/mmap.c:2236
 split_vma+0xa3/0xe0 mm/mmap.c:2269
 mprotect_fixup+0x705/0x960 mm/mprotect.c:626
 do_mprotect_pkey+0x6fd/0xa70 mm/mprotect.c:785
 __do_sys_mprotect mm/mprotect.c:812 [inline]
 __se_sys_mprotect mm/mprotect.c:809 [inline]
 __x64_sys_mprotect+0x78/0xb0 mm/mprotect.c:809
 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: 0033:0x7ff84ac8d297
Code: 44 00 00 b8 0b 00 00 00 0f 05 48 3d 01 f0 ff ff 73 01 c3 48 8d 0d 21 1f 01 00 f7 d8 89 01 48 83 c8 ff c3 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d 01 1f 01 00 f7 d8 89 01 48 83
RSP: 002b:00007ffdc20fd648 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007ff84ac6ba00 RCX: 00007ff84ac8d297
RDX: 0000000000000001 RSI: 0000000000001000 RDI: 00007ff84a9e5000
RBP: 00007ffdc20fd760 R08: 0000000000000000 R09: 00007ff84aade310
R10: 00007ff84a9e5d78 R11: 0000000000000206 R12: 00007ff84ac6ba00
R13: 0000000000000007 R14: 0000003f00000007 R15: 00007ff84a9cfd90
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18749 Comm: modprobe Not tainted 6.1.0-syzkaller-13822-g6feb57c2fd7c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:debug_lockdep_rcu_enabled+0x14/0x30 kernel/rcu/update.c:280
Code: 75 00 00 00 00 eb bc e8 fa fa ff ff eb bc 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 8b 05 5a 39 6d 04 85 c0 74 21 8b 05 58 6d 6d 04 <85> c0 74 17 65 48 8b 04 25 00 ac 03 00 8b 80 34 0a 00 00 85 c0 0f
RSP: 0018:ffffc90000007e10 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff81710b11 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: ffff8880b982b880 R14: ffff8880b982b780 R15: ffff88802012a340
FS:  00007ff84a942800(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32c2c000 CR3: 000000002a7a7000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 rcu_read_lock_held_common kernel/rcu/update.c:104 [inline]
 rcu_read_lock_sched_held+0x11/0x70 kernel/rcu/update.c:123
 trace_hrtimer_expire_exit include/trace/events/timer.h:282 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0xb43/0xfb0 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x320/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
 __sysvec_apic_timer_interrupt+0x180/0x640 arch/x86/kernel/apic/apic.c:1113
 sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1107
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:write_comp_data+0x3c/0x90 kernel/kcov.c:236
Code: 01 00 00 49 89 f8 65 48 8b 14 25 00 ac 03 00 a9 00 01 ff 00 74 0e 85 f6 74 59 8b 82 6c 15 00 00 85 c0 74 4f 8b 82 48 15 00 00 <83> f8 03 75 44 48 8b 82 50 15 00 00 8b 92 4c 15 00 00 48 8b 38 48
RSP: 0018:ffffc9000361f560 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007ff84ac8d000 RCX: ffffffff81008092
RDX: ffff88805a75d7c0 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 0000000000000001 R08: 0000000000000007 R09: ffffffffff600000
R10: 00007ff84ac8d000 R11: 0000000000094001 R12: ffffc9000361f698
R13: 0000000000000000 R14: ffff88805a75d7c0 R15: 0000000000000dc0
 in_gate_area_no_mm+0x42/0x70 arch/x86/entry/vsyscall/vsyscall_64.c:345
 is_kernel_text include/linux/kallsyms.h:31 [inline]
 core_kernel_text+0x24/0xa0 kernel/extable.c:68
 kernel_text_address+0x11/0x80 kernel/extable.c:99
 __kernel_text_address+0xd/0x30 kernel/extable.c:79
 unwind_get_return_address arch/x86/kernel/unwind_orc.c:342 [inline]
 unwind_get_return_address+0x55/0xa0 arch/x86/kernel/unwind_orc.c:337
 arch_stack_walk+0x97/0xf0 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x90/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 __kasan_slab_alloc+0x82/0x90 mm/kasan/common.c:325
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slab.h:761 [inline]
 kmem_cache_alloc_bulk+0x418/0x840 mm/slub.c:4033
 mt_alloc_bulk lib/maple_tree.c:157 [inline]
 mas_alloc_nodes+0x309/0x810 lib/maple_tree.c:1256
 mas_node_count_gfp lib/maple_tree.c:1315 [inline]
 mas_preallocate+0x1bb/0x360 lib/maple_tree.c:5722
 __vma_adjust+0x192/0x1ae0 mm/mmap.c:715
 vma_adjust include/linux/mm.h:2793 [inline]
 __split_vma+0x2a9/0x5e0 mm/mmap.c:2236
 split_vma+0xa3/0xe0 mm/mmap.c:2269
 mprotect_fixup+0x705/0x960 mm/mprotect.c:626
 do_mprotect_pkey+0x6fd/0xa70 mm/mprotect.c:785
 __do_sys_mprotect mm/mprotect.c:812 [inline]
 __se_sys_mprotect mm/mprotect.c:809 [inline]
 __x64_sys_mprotect+0x78/0xb0 mm/mprotect.c:809
 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: 0033:0x7ff84ac8d297
Code: 44 00 00 b8 0b 00 00 00 0f 05 48 3d 01 f0 ff ff 73 01 c3 48 8d 0d 21 1f 01 00 f7 d8 89 01 48 83 c8 ff c3 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d 01 1f 01 00 f7 d8 89 01 48 83
RSP: 002b:00007ffdc20fd648 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007ff84ac6ba00 RCX: 00007ff84ac8d297
RDX: 0000000000000001 RSI: 0000000000001000 RDI: 00007ff84a9e5000
RBP: 00007ffdc20fd760 R08: 0000000000000000 R09: 00007ff84aade310
R10: 00007ff84a9e5d78 R11: 0000000000000206 R12: 00007ff84ac6ba00
R13: 0000000000000007 R14: 0000003f00000007 R15: 00007ff84a9cfd90
 </TASK>
CPU: 1 PID: 18760 Comm: syz-executor.3 Not tainted 6.1.0-syzkaller-13822-g6feb57c2fd7c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:csd_lock_wait kernel/smp.c:413 [inline]
RIP: 0010:smp_call_function_many_cond+0x43f/0x10a0 kernel/smp.c:987
Code: e6 e8 05 fb 0a 00 45 85 e4 74 48 48 8b 04 24 49 89 c5 83 e0 07 49 c1 ed 03 49 89 c4 4d 01 fd 41 83 c4 03 e8 33 fe 0a 00 f3 90 <41> 0f b6 45 00 41 38 c4 7c 08 84 c0 0f 85 4e 0a 00 00 8b 43 08 31
RSP: 0018:ffffc9000365f980 EFLAGS: 00000246
RAX: 0000000000040000 RBX: ffff8880b9843ce0 RCX: ffffc9000bf8f000
RDX: 0000000000040000 RSI: ffffffff8176538d RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003
R13: ffffed101730879d R14: 0000000000000001 R15: dffffc0000000000
FS:  00007faff7ffe700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faff95ad988 CR3: 00000000792f4000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 clock_was_set+0x615/0x870 kernel/time/hrtimer.c:974
 timekeeping_inject_offset+0x4b4/0x620 kernel/time/timekeeping.c:1395
 do_adjtimex+0x333/0xa40 kernel/time/timekeeping.c:2444
 do_clock_adjtime kernel/time/posix-timers.c:1118 [inline]
 __do_sys_clock_adjtime+0x163/0x270 kernel/time/posix-timers.c:1130
 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: 0033:0x7faff948c0d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007faff7ffe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007faff95abf80 RCX: 00007faff948c0d9
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000000
RBP: 00007faff94e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd303b2bdf R14: 00007faff7ffe300 R15: 0000000000022000
 </TASK>

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/12/20 05:30 upstream 6feb57c2fd7c c52b2efb .config console log report info ci-upstream-kasan-gce-root INFO: rcu detected stall in sys_mprotect
2022/11/22 17:23 upstream eb7081409f94 1c576c23 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in sys_mprotect
2023/01/12 11:16 linux-next 0a093b2893c7 96166539 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in sys_mprotect
* Struck through repros no longer work on HEAD.