rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P9522/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=36393, q=169892 ncpus=2)
task:syz.2.958 state:R running task stack:24896 pid:9522 tgid:9519 ppid:5832 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7078
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:lock_is_held_type+0x13b/0x190
Code: 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 42 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc9000c54f1f8 EFLAGS: 00000206
RAX: 192ce4f53cf89600 RBX: 0000000000000000 RCX: ffff88802f1dda00
RDX: ffff88802f1dda00 RSI: ffffffff8c0aaae0 RDI: ffffffff8c5edce0
RBP: 0000000000000002 R08: ffffffff8bbe97a7 R09: 1ffffffff284e310
R10: dffffc0000000000 R11: fffffbfff284e311 R12: 0000000000000246
R13: ffff88802f1dda00 R14: 00000000ffffffff R15: ffff888023497018
lock_is_held include/linux/lockdep.h:249 [inline]
xa_entry include/linux/xarray.h:1220 [inline]
xas_descend lib/xarray.c:207 [inline]
xas_load+0x19c/0x5c0 lib/xarray.c:245
xa_load+0x1fc/0x350 lib/xarray.c:1477
page_cache_ra_unbounded+0x25b/0x720 mm/readahead.c:250
do_sync_mmap_readahead+0x499/0x970
filemap_fault+0x8a9/0x1490 mm/filemap.c:3335
__do_fault+0x135/0x390 mm/memory.c:4907
do_read_fault mm/memory.c:5322 [inline]
do_fault mm/memory.c:5456 [inline]
do_pte_missing mm/memory.c:3979 [inline]
handle_pte_fault+0x39eb/0x5ed0 mm/memory.c:5801
__handle_mm_fault mm/memory.c:5944 [inline]
handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6112
do_user_addr_fault arch/x86/mm/fault.c:1389 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x2b9/0x8b0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:get_sigset_argpack fs/select.c:783 [inline]
RIP: 0010:__do_sys_pselect6 fs/select.c:799 [inline]
RIP: 0010:__se_sys_pselect6+0xb8/0x3f0 fs/select.c:793
Code: 31 ff 48 89 de e8 68 f3 84 ff 48 85 db 4c 89 74 24 58 74 31 48 b8 00 f0 ff ff ff 7f 00 00 48 39 d8 48 19 c0 48 09 d8 0f 01 cb <48> 8b 08 48 8b 40 08 48 89 44 24 18 48 89 4c 24 20 e8 52 ee 84 ff
RSP: 0018:ffffc9000c54fde0 EFLAGS: 00050206
RAX: 00000000200001c0 RBX: 00000000200001c0 RCX: ffff88802f1dda00
RDX: ffffc900054f9000 RSI: 00000000200001c0 RDI: 0000000000000000
RBP: ffffc9000c54ff00 R08: ffffffff821a8548 R09: 00000000200001c0
R10: dffffc0000000000 R11: fffffbfff2030aef R12: 1ffff920018a9fc8
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
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: 0033:0x7f1b0c985d29
RSP: 002b:00007f1b0d7d9038 EFLAGS: 00000246 ORIG_RAX: 000000000000010e
RAX: ffffffffffffffda RBX: 00007f1b0cb75fa0 RCX: 00007f1b0c985d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f1b0ca01b08 R08: 0000000000000000 R09: 00000000200001c0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1b0cb75fa0 R15: 00007ffd56770668
rcu: rcu_preempt kthread starved for 233 jiffies! g36393 f0x0 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:26264 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 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
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: 9527 Comm: syz.2.958 Not tainted 6.13.0-rc6-syzkaller-00036-gfbfd64d25c7a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:194 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:246 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x35/0x90 kernel/kcov.c:314
Code: 14 25 80 d4 03 00 65 8b 05 60 5c 64 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 5b 83 ba 1c 16 00 00 00 74 52 8b 82 f8 15 00 00 <83> f8 03 75 47 48 8b 8a 00 16 00 00 44 8b 8a fc 15 00 00 49 c1 e1
RSP: 0018:ffffc90003755c68 EFLAGS: 00000046
RAX: 0000000000000002 RBX: 0000000000000001 RCX: ffff8880276b9e00
RDX: ffff8880276b9e00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 1ffff920006eabd2 R08: ffffffff8bbeaf6f R09: 1ffffd40002e7d80
R10: dffffc0000000000 R11: fffff940002e7d81 R12: 0000000000000003
R13: ffffc90003755e80 R14: 0000000000000001 R15: ffffc90003755e90
FS: 00007f1b0d7976c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7faac21f0b CR3: 000000004c186000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
xa_head_locked include/linux/xarray.h:1211 [inline]
xas_create+0xff/0x1ae0 lib/xarray.c:650
xas_store+0x98/0x1890 lib/xarray.c:788
page_cache_delete mm/filemap.c:140 [inline]
__filemap_remove_folio+0x4e9/0x670 mm/filemap.c:223
__remove_mapping+0x86f/0xad0 mm/vmscan.c:798
shrink_folio_list+0x2caf/0x57e0 mm/vmscan.c:1474
shrink_inactive_list mm/vmscan.c:1967 [inline]
shrink_list mm/vmscan.c:2205 [inline]
shrink_lruvec+0x16db/0x2f30 mm/vmscan.c:5734
shrink_node_memcgs mm/vmscan.c:5936 [inline]
shrink_node+0x12a4/0x2e10 mm/vmscan.c:5977
shrink_zones mm/vmscan.c:6222 [inline]
do_try_to_free_pages+0x69d/0x1b20 mm/vmscan.c:6284
try_to_free_mem_cgroup_pages+0x4b8/0xaf0 mm/vmscan.c:6616
try_charge_memcg+0x8c7/0x1150 mm/memcontrol.c:2238
try_charge mm/memcontrol-v1.h:19 [inline]
charge_memcg+0x9f/0x170 mm/memcontrol.c:4497
__mem_cgroup_charge+0x27/0x80 mm/memcontrol.c:4512
mem_cgroup_charge include/linux/memcontrol.h:646 [inline]
filemap_add_folio+0xb7/0x380 mm/filemap.c:957
page_cache_ra_unbounded+0x32c/0x720 mm/readahead.c:273
do_sync_mmap_readahead+0x499/0x970
filemap_fault+0x8a9/0x1490 mm/filemap.c:3335
__do_fault+0x135/0x390 mm/memory.c:4907
do_read_fault mm/memory.c:5322 [inline]
do_fault mm/memory.c:5456 [inline]
do_pte_missing mm/memory.c:3979 [inline]
handle_pte_fault+0x39eb/0x5ed0 mm/memory.c:5801
__handle_mm_fault mm/memory.c:5944 [inline]
handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6112
do_user_addr_fault arch/x86/mm/fault.c:1389 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x2b9/0x8b0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:rep_movs_alternative+0x30/0x70 arch/x86/lib/copy_user_64.S:57
Code: f9 40 73 40 83 f9 08 73 21 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 <48> 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08
RSP: 0018:ffffc90003757d08 EFLAGS: 00050202
RAX: 0000000000000001 RBX: 00000000200001c0 RCX: 000000000000000c
RDX: 0000000000000001 RSI: 00000000200001c0 RDI: ffff8880126ecca0
RBP: ffff8880126ecca0 R08: 0000000000000003 R09: ffffed10024dd995
R10: dffffc0000000000 R11: ffffed10024dd995 R12: 00000000200001c0
R13: 000000000000000c R14: ffff8880126ecca0 R15: 000000000000000c
copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline]
_inline_copy_from_user include/linux/uaccess.h:178 [inline]
_copy_from_user+0x7f/0xc0 lib/usercopy.c:18
copy_from_user include/linux/uaccess.h:212 [inline]
copy_from_sockptr_offset include/linux/sockptr.h:48 [inline]
copy_from_sockptr include/linux/sockptr.h:61 [inline]
memdup_sockptr_noprof include/linux/sockptr.h:130 [inline]
sctp_setsockopt+0xcc/0x11c0 net/sctp/socket.c:4595
do_sock_setsockopt+0x3af/0x720 net/socket.c:2313
__sys_setsockopt net/socket.c:2338 [inline]
__do_sys_setsockopt net/socket.c:2344 [inline]
__se_sys_setsockopt net/socket.c:2341 [inline]
__x64_sys_setsockopt+0x1ee/0x280 net/socket.c:2341
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: 0033:0x7f1b0c985d29
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:00007f1b0d797038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f1b0cb76160 RCX: 00007f1b0c985d29
RDX: 0000000000000072 RSI: 0000000000000084 RDI: 0000000000000004
RBP: 00007f1b0ca01b08 R08: 000000000000000c R09: 0000000000000000
R10: 00000000200001c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f1b0cb76160 R15: 00007ffd56770668