rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P12990/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=159377, q=765 ncpus=2)
task:modprobe state:R running task stack:24992 pid:12990 tgid:12990 ppid:12902 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x11/0x90 kernel/kcov.c:313
Code: 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 14 25 00 d7 03 00 <65> 8b 05 80 46 70 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 5b 83
RSP: 0018:ffffc90009677418 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff888021809e00
RDX: ffff888021809e00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90009677610 R08: ffffffff8bac91dc R09: fffffbfff2a68408
R10: dffffc0000000000 R11: fffffbfff2a68408 R12: ffff8880a248440c
R13: 0000000000000000 R14: ffff888025e23050 R15: 0000000000000001
mt_locked lib/maple_tree.c:781 [inline]
mt_slot lib/maple_tree.c:788 [inline]
mas_slot lib/maple_tree.c:821 [inline]
mas_validate_parent_slot lib/maple_tree.c:7400 [inline]
mt_validate+0x9dc/0x4aa0 lib/maple_tree.c:7589
validate_mm+0xe7/0x530 mm/mmap.c:329
do_vmi_align_munmap+0x15dd/0x18c0 mm/mmap.c:2759
do_vmi_munmap+0x261/0x2f0 mm/mmap.c:2830
mmap_region+0x72f/0x2090 mm/mmap.c:2881
do_mmap+0x8f9/0x1010 mm/mmap.c:1468
vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588
ksys_mmap_pgoff+0x4f1/0x720 mm/mmap.c:1514
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: 0033:0x7feb3ab7bb74
RSP: 002b:00007ffda2c5b6c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffda2c5b708 RCX: 00007feb3ab7bb74
RDX: 0000000000000005 RSI: 0000000000123000 RDI: 00007feb3a90b000
RBP: 00007ffda2c5be60 R08: 0000000000000000 R09: 0000000000028000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007feb3ab575c0
R13: 00007ffda2c5bee8 R14: 0000000000027f38 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 9615 jiffies! g159377 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:25232 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 12987 Comm: syz.0.926 Not tainted 6.11.0-rc5-syzkaller-00050-g3ec3f5fc4a91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:obj_cgroup_charge+0x350/0x5d0 mm/memcontrol.c:2919
Code: 44 24 60 42 80 3c 23 00 74 08 4c 89 ff e8 58 d9 f7 ff f6 44 24 61 02 0f 85 ca 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 45 31 f6 <80> 7c 24 0c 00 75 4f 48 8b 5c 24 20 48 89 d8 48 c1 e8 0c 31 d2 89
RSP: 0018:ffffc900036575a0 EFLAGS: 00000246
RAX: 15148e4fd9cedf00 RBX: 1ffff920006caec0 RCX: ffffffff81703f6a
RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c606f40
RBP: ffffc900036576a0 R08: ffffffff9373496f R09: 1ffffffff26e692d
R10: dffffc0000000000 R11: fffffbfff26e692e R12: dffffc0000000000
R13: 1ffff920006caebc R14: 0000000000000000 R15: ffffc90003657600
FS: 00007fc1db5ae6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb746a65215 CR3: 000000005c00c000 CR4: 0000000000350ef0
Call Trace:
__memcg_slab_post_alloc_hook+0x1b1/0x7e0 mm/memcontrol.c:3012
memcg_slab_post_alloc_hook mm/slub.c:2160 [inline]
slab_post_alloc_hook mm/slub.c:3998 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_noprof+0x1de/0x2a0 mm/slub.c:4044
alloc_buffer_head+0x2a/0x290 fs/buffer.c:3025
folio_alloc_buffers+0x241/0x5b0 fs/buffer.c:929
create_empty_buffers+0x3a/0x740 fs/buffer.c:1671
block_read_full_folio+0x25c/0xcd0 fs/buffer.c:2387
filemap_read_folio+0x1a2/0x790 mm/filemap.c:2355
do_read_cache_folio+0x134/0x820 mm/filemap.c:3789
do_read_cache_page+0x30/0x200 mm/filemap.c:3855
read_mapping_page include/linux/pagemap.h:907 [inline]
dir_get_page fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
lookup_one_qstr_excl+0x121/0x260 fs/namei.c:1633
filename_create+0x297/0x540 fs/namei.c:3980
do_mkdirat+0xbd/0x3a0 fs/namei.c:4225
__do_sys_mkdirat fs/namei.c:4248 [inline]
__se_sys_mkdirat fs/namei.c:4246 [inline]
__x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4246
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: 0033:0x7fc1da779e79
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc1db5ae038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fc1da916130 RCX: 00007fc1da779e79
RDX: 00000000000001ff RSI: 0000000020001540 RDI: ffffffffffffff9c
RBP: 00007fc1da7e793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc1da916130 R15: 00007ffd864a3198