INFO: task syz.5.414:7908 blocked for more than 143 seconds.
Not tainted 6.13.0-rc2-syzkaller-00130-g150b567e0d57 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.414 state:D stack:28176 pid:7908 tgid:7894 ppid:5824 flags:0x00000004
Call Trace:
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_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1694
inode_lock_nested include/linux/fs.h:853 [inline]
filename_create+0x260/0x540 fs/namei.c:4080
do_mkdirat+0xbd/0x3a0 fs/namei.c:4326
__do_sys_mkdir fs/namei.c:4354 [inline]
__se_sys_mkdir fs/namei.c:4352 [inline]
__x64_sys_mkdir+0x6c/0x80 fs/namei.c:4352
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: 0033:0x7f5ece385d19
RSP: 002b:00007f5ecf1f3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f5ece576160 RCX: 00007f5ece385d19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000240
RBP: 00007f5ece401a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f5ece576160 R15: 00007fffbc5f96c8
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc2-syzkaller-00130-g150b567e0d57 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0xff6/0x1040 kernel/hung_task.c:397
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
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 7914 Comm: syz.5.414 Not tainted 6.13.0-rc2-syzkaller-00130-g150b567e0d57 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:folio_pgdat include/linux/mm.h:1883 [inline]
RIP: 0010:slab_pgdat mm/slab.h:206 [inline]
RIP: 0010:__memcg_slab_free_hook+0x22c/0x310 mm/memcontrol.c:3034
Code: 84 f2 00 00 00 48 c1 e8 3a 48 8d 1c c5 80 4c 41 9a 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 97 d9 f7 ff 48 8b 2b <48> 8b 5c 24 20 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 65 0f
RSP: 0018:ffffc90002e357b0 EFLAGS: 00000246
RAX: 1ffffffff3482990 RBX: ffffffff9a414c80 RCX: ffffffff81a7271c
RDX: dffffc0000000000 RSI: ffffffff8c5f9760 RDI: 0000000000000000
RBP: ffff88813fffb540 R08: ffffffff901963f7 R09: 1ffffffff2032c7e
R10: dffffc0000000000 R11: fffffbfff2032c7f R12: 1ffff1102815d1bb
R13: 0000000000000000 R14: ffff888027214080 R15: dffffc0000000000
FS: 00007f5ecf1d26c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc83dea56c0 CR3: 0000000029090000 CR4: 0000000000350ef0
Call Trace:
memcg_slab_free_hook mm/slub.c:2178 [inline]
slab_free mm/slub.c:4595 [inline]
kmem_cache_free+0x222/0x410 mm/slub.c:4700
free_buffer_head+0x54/0x240 fs/buffer.c:3031
try_to_free_buffers+0x2fa/0x3b0 fs/buffer.c:2972
shrink_folio_list+0x241e/0x5ca0 mm/vmscan.c:1433
evict_folios+0x3c86/0x5800 mm/vmscan.c:4593
try_to_shrink_lruvec+0x9a6/0xc70 mm/vmscan.c:4789
lru_gen_shrink_lruvec mm/vmscan.c:4938 [inline]
shrink_lruvec+0x53c/0x3160 mm/vmscan.c:5693
shrink_node_memcgs mm/vmscan.c:5929 [inline]
shrink_node+0xb15/0x3e50 mm/vmscan.c:5970
shrink_zones mm/vmscan.c:6215 [inline]
do_try_to_free_pages+0x78c/0x1cf0 mm/vmscan.c:6277
try_to_free_mem_cgroup_pages+0x48c/0xab0 mm/vmscan.c:6609
try_charge_memcg+0x8c7/0x1150 mm/memcontrol.c:2238
obj_cgroup_charge_pages+0x91/0x230 mm/memcontrol.c:2646
obj_cgroup_charge+0x380/0x5d0 mm/memcontrol.c:2937
__memcg_slab_post_alloc_hook+0x1b1/0x7e0 mm/memcontrol.c:2998
memcg_slab_post_alloc_hook mm/slub.c:2152 [inline]
slab_post_alloc_hook mm/slub.c:4114 [inline]
slab_alloc_node mm/slub.c:4153 [inline]
kmem_cache_alloc_noprof+0x287/0x380 mm/slub.c:4160
alloc_buffer_head+0x2a/0x290 fs/buffer.c:3015
folio_alloc_buffers+0x31f/0x640 fs/buffer.c:924
create_empty_buffers+0x3a/0x530 fs/buffer.c:1662
block_read_full_folio+0x244/0xae0 fs/buffer.c:2377
filemap_read_folio+0x14a/0x3b0 mm/filemap.c:2366
do_read_cache_folio+0x373/0x5b0 mm/filemap.c:3826
read_mapping_folio include/linux/pagemap.h:1011 [inline]
dir_get_folio fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x16c/0x590 fs/sysv/dir.c:154
sysv_inode_by_name+0x98/0x2a0 fs/sysv/dir.c:370
sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
lookup_open fs/namei.c:3627 [inline]
open_last_lookups fs/namei.c:3748 [inline]
path_openat+0x11a9/0x3590 fs/namei.c:3984
do_filp_open+0x27f/0x4e0 fs/namei.c:4014
do_sys_openat2+0x13e/0x1d0 fs/open.c:1402
do_sys_open fs/open.c:1417 [inline]
__do_sys_openat fs/open.c:1433 [inline]
__se_sys_openat fs/open.c:1428 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1428
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: 0033:0x7f5ece385d19
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:00007f5ecf1d2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f5ece576240 RCX: 00007f5ece385d19
RDX: 0000000000000000 RSI: 0000000020000080 RDI: ffffffffffffff9c
RBP: 00007f5ece401a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5ece576240 R15: 00007fffbc5f96c8