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KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64 (2)

Status: moderation: reported on 2024/08/30 11:59
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+ced4d9a8cadb5ef3adae@syzkaller.appspotmail.com
First crash: 259d, last: 22h58m
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64 kernel 334 298d 525d 0/28 auto-obsoleted due to no activity on 2024/08/19 05:50

Sample crash report:
Memory cgroup out of memory: Killed process 9206 (syz.4.1735) total-vm:95664kB, anon-rss:976kB, file-rss:20480kB, shmem-rss:0kB, UID:0 pgtables:96kB oom_score_adj:1000
==================================================================
BUG: KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64

read-write to 0xffffffff868099c0 of 8 bytes by interrupt on cpu 1:
 tick_do_update_jiffies64+0x113/0x1c0 kernel/time/tick-sched.c:118
 tick_sched_do_timer kernel/time/tick-sched.c:232 [inline]
 tick_nohz_handler+0x7f/0x2d0 kernel/time/tick-sched.c:290
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x20f/0x5a0 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x21a/0x460 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x5c/0x1d0 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x6f/0x80 arch/x86/kernel/apic/apic.c:1049
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
 console_flush_all+0x55b/0x730 arch/x86/include/asm/irqflags.h:-1
 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
 console_unlock+0xa1/0x330 kernel/printk/printk.c:3325
 vprintk_emit+0x388/0x650 kernel/printk/printk.c:2450
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2465
 vprintk+0x1d/0x30 kernel/printk/printk_safe.c:82
 _printk+0x79/0xa0 kernel/printk/printk.c:2475
 kauditd_printk_skb kernel/audit.c:546 [inline]
 kauditd_hold_skb+0x1b1/0x1c0 kernel/audit.c:581
 kauditd_send_queue+0x270/0x2c0 kernel/audit.c:766
 kauditd_thread+0x421/0x630 kernel/audit.c:890
 kthread+0x489/0x510 kernel/kthread.c:464
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

read to 0xffffffff868099c0 of 8 bytes by task 4014 on cpu 0:
 mem_cgroup_flush_stats_ratelimited+0x29/0x70 mm/memcontrol.c:643
 count_shadow_nodes+0x6a/0x230 mm/workingset.c:680
 do_shrink_slab+0x63/0x680 mm/shrinker.c:384
 shrink_slab_memcg mm/shrinker.c:550 [inline]
 shrink_slab+0x448/0x760 mm/shrinker.c:628
 shrink_node_memcgs mm/vmscan.c:5991 [inline]
 shrink_node+0x6c3/0x2110 mm/vmscan.c:6030
 shrink_zones mm/vmscan.c:6274 [inline]
 do_try_to_free_pages+0x3f6/0xcd0 mm/vmscan.c:6336
 try_to_free_mem_cgroup_pages+0x1ab/0x410 mm/vmscan.c:6664
 try_charge_memcg+0x3ab/0x870 mm/memcontrol.c:2304
 try_charge mm/memcontrol.c:2446 [inline]
 charge_memcg+0x51/0xc0 mm/memcontrol.c:4592
 mem_cgroup_swapin_charge_folio+0xcc/0x150 mm/memcontrol.c:4678
 __read_swap_cache_async+0x1df/0x350 mm/swap_state.c:444
 swap_cluster_readahead+0x277/0x3e0 mm/swap_state.c:616
 swapin_readahead+0xde/0x6f0 mm/swap_state.c:814
 do_swap_page+0x301/0x2460 mm/memory.c:4532
 handle_pte_fault mm/memory.c:6000 [inline]
 __handle_mm_fault mm/memory.c:6140 [inline]
 handle_mm_fault+0xb60/0x2ae0 mm/memory.c:6309
 do_user_addr_fault+0x636/0x1090 arch/x86/mm/fault.c:1337
 handle_page_fault arch/x86/mm/fault.c:1480 [inline]
 exc_page_fault+0x54/0xc0 arch/x86/mm/fault.c:1538
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

value changed: 0x0000000100004ebd -> 0x0000000100004ebe

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 4014 Comm: syz.4.10732 Not tainted 6.15.0-rc6-syzkaller-00188-gfee3e843b309 #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
==================================================================

Crashes (258):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/05/16 06:24 upstream fee3e843b309 cfde8269 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/15 05:15 upstream c94d59a126cb d6b2ee52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/14 18:27 upstream 9f35e33144ae a4fa04ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/14 06:06 upstream 405e6c37c89e 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/13 18:10 upstream e9565e23cd89 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/13 09:17 upstream e9565e23cd89 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/12 19:29 upstream 82f2b0b97b36 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/10 20:53 upstream bec6f00f120e 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/09 17:21 upstream 9c69f8884904 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/09 04:19 upstream 2c89c1b655c0 bb813bcc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/08 16:38 upstream d76bb1ebb558 dbf35fa1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/07 22:15 upstream 707df3375124 dbf35fa1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/06 12:05 upstream 01f95500a162 ae98e6b9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/05 07:46 upstream 92a09c47464d b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/04 20:55 upstream e8ab83e34bdc b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/04 02:53 upstream 2a239ffbebb5 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/03 10:10 upstream 95d3481af6dc b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/03 01:00 upstream 2bfcee565c3a b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/05/02 05:05 upstream ebd297a2affa 51b137cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/30 03:30 upstream ca91b9500108 85a5a23f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/28 21:00 upstream f15d97df5afa aeb6ec69 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/27 04:00 upstream 5bc1018675ec c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/25 22:01 upstream 02ddfb981de8 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/25 09:22 upstream 02ddfb981de8 e3715315 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/25 00:52 upstream e72e9e693307 9882047a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/24 01:07 upstream a79be02bba5c 73a168d0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/23 14:06 upstream bc3372351d0c 53a8b9bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/22 11:46 upstream a33b5a08cbbd 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/20 08:43 upstream 119009db2674 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/19 16:33 upstream 8560697b23dc 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/19 04:21 upstream 3088d26962e8 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/17 23:54 upstream b5c6891b2c5b 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/17 09:06 upstream cfb2e2c57aef 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/16 04:10 upstream 1a1d569a75f3 a95239b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/14 14:23 upstream 8ffd015db85f 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/13 03:28 upstream 7cdabafc0012 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/11 15:48 upstream 900241a5cc15 94486846 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/10 18:03 upstream 2eb959eeecc6 1ef3ab4d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/09 10:52 upstream a24588245776 47d015b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/08 16:41 upstream 0af2f6be1b42 a775275d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/07 05:38 upstream 0af2f6be1b42 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/06 14:46 upstream f4d2ef48250a 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/06 01:49 upstream a8662bcd2ff1 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/04 16:42 upstream e48e99b6edf4 1c4febdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/04 04:06 upstream a2cc6ff5ec8f d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/04/03 17:50 upstream a1b5bd45d4ee 996a9618 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/03/31 18:10 upstream 4e82c87058f4 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/03/30 12:58 upstream 7f2ff7b62617 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2025/03/29 23:42 upstream 7d06015d936c d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
2024/08/30 11:58 upstream 20371ba12063 ee2602b8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64
* Struck through repros no longer work on HEAD.