* syzbot <syzbot+882589c97d51a9de68eb@xxxxxxxxxxxxxxxxxxxxxxxxx> [241209 04:12]: > Hello, > > syzbot found the following issue on: > > HEAD commit: feffde684ac2 Merge tag 'for-6.13-rc1-tag' of git://git.ker.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=10b08020580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=50c7a61469ce77e7 > dashboard link: https://syzkaller.appspot.com/bug?extid=882589c97d51a9de68eb > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10e8a8df980000 Check hot fixes in case this is related to known issues. #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm mm-unstable > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/3bb09093023b/disk-feffde68.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/9e37e48dc48a/vmlinux-feffde68.xz > kernel image: https://storage.googleapis.com/syzbot-assets/36b46b3a6421/bzImage-feffde68.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+882589c97d51a9de68eb@xxxxxxxxxxxxxxxxxxxxxxxxx > > rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: > rcu: (detected by 0, t=17825 jiffies, g=10505, q=929 ncpus=2) > rcu: All QSes seen, last rcu_preempt kthread activity 11791 (4294964533-4294952742), jiffies_till_next_fqs=1, root ->qsmask 0x0 > rcu: rcu_preempt kthread starved for 11791 jiffies! g10505 f0x2 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:25784 pid:17 tgid:17 ppid:2 flags:0x00004000 > Call Trace: > <TASK> > context_switch kernel/sched/core.c:5369 [inline] > __schedule+0x1850/0x4c30 kernel/sched/core.c:6756 > __schedule_loop kernel/sched/core.c:6833 [inline] > schedule+0x14b/0x320 kernel/sched/core.c:6848 > schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99 > rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045 > rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247 > kthread+0x2f0/0x390 kernel/kthread.c:389 > ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 > ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 > </TASK> > 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: 6002 Comm: syz-executor Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 > RIP: 0010:__sanitizer_cov_trace_cmp8+0x0/0x90 kernel/kcov.c:293 > Code: 10 48 89 74 0a 18 4c 89 44 0a 20 c3 cc cc cc cc 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 0c 25 00 d6 03 00 65 8b 05 70 61 > RSP: 0018:ffffc90000a18c98 EFLAGS: 00000046 > RAX: ffffffff8bcbfbf7 RBX: ffff88805d8d6340 RCX: ffff88803141bc00 > RDX: 0000000000010000 RSI: ffff88805d8d6340 RDI: ffff88805d8d6340 > RBP: 1ffff1100bb1ac68 R08: ffffffff818d04c0 R09: 1ffffffff20328be > R10: dffffc0000000000 R11: fffffbfff20328bf R12: ffff8880b872c9d0 > R13: ffff8880b872c9d0 R14: ffff88805d8d6340 R15: ffff88805d8d6340 > FS: 000055557e00b500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f29e4db6bd0 CR3: 00000000622f2000 CR4: 00000000003526f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > <NMI> > </NMI> > <IRQ> > timerqueue_add+0x4b/0x290 lib/timerqueue.c:38 > enqueue_hrtimer+0x1b2/0x3c0 kernel/time/hrtimer.c:1084 > __run_hrtimer kernel/time/hrtimer.c:1756 [inline] > __hrtimer_run_queues+0x6cb/0xd30 kernel/time/hrtimer.c:1803 > hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865 > local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] > __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055 > instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] > sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049 > </IRQ> > <TASK> > asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 > RIP: 0010:mas_wr_store_type+0x2a/0x16c0 lib/maple_tree.c:4212 > Code: 55 41 57 41 56 41 55 41 54 53 48 81 ec c8 00 00 00 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 ad 78 d8 f5 4c 89 f0 48 c1 e8 03 <48> 89 84 24 80 00 00 00 42 80 3c 20 00 74 08 4c 89 f7 e8 5f 60 43 > RSP: 0018:ffffc900031174c0 EFLAGS: 00000a02 > RAX: 1ffff92000622ec4 RBX: 0000000000000000 RCX: ffff88803141bc00 > RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90003117620 > RBP: ffffc900031176f0 R08: ffffffff8bc6b87c R09: ffffffff8bc761f0 > R10: 0000000000000005 R11: ffff88803141bc00 R12: dffffc0000000000 > R13: ffffc90003117620 R14: ffffc90003117620 R15: dffffc0000000000 > mas_preallocate+0x27d/0x8d0 lib/maple_tree.c:5540 > vma_iter_prealloc mm/vma.h:349 [inline] > __mmap_new_vma mm/vma.c:2349 [inline] > __mmap_region+0x1b89/0x2cd0 mm/vma.c:2456 > mmap_region+0x1d0/0x2c0 mm/mmap.c:1347 > do_mmap+0x8f0/0x1000 mm/mmap.c:496 > vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:580 > 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: 0033:0x7fa71757ff53 > Code: f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 89 ca 41 f7 c1 ff 0f 00 00 75 14 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 25 c3 0f 1f 40 00 48 c7 c0 a8 ff ff ff 64 c7 > RSP: 002b:00007ffedb7e9bc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 > RAX: ffffffffffffffda RBX: fffffffffffff000 RCX: 00007fa71757ff53 > RDX: 0000000000000000 RSI: 0000000000801000 RDI: 0000000000000000 > RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 > R10: 0000000000020022 R11: 0000000000000246 R12: 00007ffedb7e9c30 > R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000 > </TASK> > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > If the report is already addressed, let syzbot know by replying with: > #syz fix: exact-commit-title > > If you want syzbot to run the reproducer, reply with: > #syz test: git://repo/address.git branch-or-commit-hash > If you attach or paste a git patch, syzbot will apply it before testing. > > If you want to overwrite report's subsystems, reply with: > #syz set subsystems: new-subsystem > (See the list of subsystem names on the web dashboard) > > If the report is a duplicate of another one, reply with: > #syz dup: exact-subject-of-another-report > > If you want to undo deduplication, reply with: > #syz undup
