INFO: task kworker/u4:5:1490 blocked for more than 143 seconds.
Not tainted 5.15.119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:5 state:D stack:19744 pid: 1490 ppid: 2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
rwsem_down_write_slowpath+0xebb/0x15c0 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x164/0x170 kernel/locking/rwsem.c:1542
unregister_shrinker+0x60/0x320 mm/vmscan.c:678
nfsd_reply_cache_shutdown+0x2d/0x260 fs/nfsd/nfscache.c:215
nfsd_exit_net+0x1f/0x50 fs/nfsd/nfsctl.c:1507
ops_exit_list net/core/net_namespace.c:169 [inline]
cleanup_net+0x6ce/0xb60 net/core/net_namespace.c:596
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2307
worker_thread+0xaca/0x1280 kernel/workqueue.c:2454
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
INFO: task syz-executor.2:26900 blocked for more than 143 seconds.
Not tainted 5.15.119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23584 pid:26900 ppid: 3535 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6514
__mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
xfs_qm_dqfree_one+0x66/0x170 fs/xfs/xfs_qm.c:1607
xfs_qm_shrink_scan+0x314/0x3d0 fs/xfs/xfs_qm.c:523
do_shrink_slab+0x542/0xda0 mm/vmscan.c:758
shrink_slab+0x233/0x960 mm/vmscan.c:918
drop_slab_node+0xed/0x180 mm/vmscan.c:953
drop_slab+0x8b/0x120 mm/vmscan.c:963
drop_caches_sysctl_handler+0xb3/0x160 fs/drop_caches.c:66
proc_sys_call_handler+0x541/0x8a0 fs/proc/proc_sysctl.c:587
do_iter_readv_writev+0x594/0x7a0
do_iter_write+0x1ea/0x760 fs/read_write.c:855
iter_file_splice_write+0x806/0xfa0 fs/splice.c:689
do_splice_from fs/splice.c:767 [inline]
direct_splice_actor+0xe3/0x1c0 fs/splice.c:936
splice_direct_to_actor+0x500/0xc10 fs/splice.c:891
do_splice_direct+0x285/0x3d0 fs/splice.c:979
do_sendfile+0x625/0xff0 fs/read_write.c:1249
__do_sys_sendfile64 fs/read_write.c:1311 [inline]
__se_sys_sendfile64+0xfc/0x1e0 fs/read_write.c:1303
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fb232756389
RSP: 002b:00007fb230cc8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fb232875f80 RCX: 00007fb232756389
RDX: 0000000020002080 RSI: 0000000000000004 RDI: 0000000000000005
RBP: 00007fb2327a1493 R08: 0000000000000000 R09: 0000000000000000
R10: 0100000000000875 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffbdc55b9f R14: 00007fb230cc8300 R15: 0000000000022000
INFO: task syz-executor.1:26912 blocked for more than 144 seconds.
Not tainted 5.15.119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:24760 pid:26912 ppid: 3525 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
rwsem_down_write_slowpath+0xebb/0x15c0 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x164/0x170 kernel/locking/rwsem.c:1542
prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
alloc_super+0x757/0x940 fs/super.c:270
sget_fc+0x21e/0x630 fs/super.c:541
get_tree_bdev+0x26b/0x620 fs/super.c:1273
vfs_get_tree+0x88/0x270 fs/super.c:1508
do_new_mount+0x28b/0xae0 fs/namespace.c:2994
do_mount fs/namespace.c:3337 [inline]
__do_sys_mount fs/namespace.c:3545 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f28a6cb88ba
RSP: 002b:00007f28a5228f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00000000000096cb RCX: 00007f28a6cb88ba
RDX: 0000000020009700 RSI: 0000000020009740 RDI: 00007f28a5228fe0
RBP: 00007f28a5229020 R08: 00007f28a5229020 R09: 0000000002000000
R10: 0000000002000000 R11: 0000000000000202 R12: 0000000020009700
R13: 0000000020009740 R14: 00007f28a5228fe0 R15: 0000000020000000
INFO: task syz-executor.5:26913 blocked for more than 144 seconds.
Not tainted 5.15.119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:23584 pid:26913 ppid: 3533 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
schedule_timeout+0xac/0x300 kernel/time/timer.c:1860
do_wait_for_common+0x2d9/0x480 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x48/0x60 kernel/sched/completion.c:138
xfs_buf_iowait+0xb4/0x400 fs/xfs/xfs_buf.c:1573
xfs_buf_delwri_pushbuf+0x2cf/0x4b0 fs/xfs/xfs_buf.c:2251
xfs_qm_flush_one+0x266/0x350 fs/xfs/xfs_qm.c:1249
xfs_qm_dquot_walk+0x22a/0x4a0 fs/xfs/xfs_qm.c:86
xfs_qm_quotacheck+0x34e/0x640 fs/xfs/xfs_qm.c:1339
xfs_qm_mount_quotas+0x328/0x610 fs/xfs/xfs_qm.c:1441
xfs_mountfs+0x162b/0x1ca0 fs/xfs/xfs_mount.c:904
xfs_fs_fill_super+0x100c/0x1240 fs/xfs/xfs_super.c:1658
get_tree_bdev+0x3fe/0x620 fs/super.c:1303
vfs_get_tree+0x88/0x270 fs/super.c:1508
do_new_mount+0x28b/0xae0 fs/namespace.c:2994
do_mount fs/namespace.c:3337 [inline]
__do_sys_mount fs/namespace.c:3545 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fb0502978ba
RSP: 002b:00007fb04e807f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00000000000096cb RCX: 00007fb0502978ba
RDX: 0000000020009700 RSI: 0000000020009740 RDI: 00007fb04e807fe0
RBP: 00007fb04e808020 R08: 00007fb04e808020 R09: 0000000002000000
R10: 0000000002000000 R11: 0000000000000202 R12: 0000000020009700
R13: 0000000020009740 R14: 00007fb04e807fe0 R15: 0000000020000000
INFO: task syz-executor.4:26931 blocked for more than 144 seconds.
Not tainted 5.15.119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24600 pid:26931 ppid: 3526 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
rwsem_down_write_slowpath+0xebb/0x15c0 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x164/0x170 kernel/locking/rwsem.c:1542
prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
alloc_super+0x757/0x940 fs/super.c:270
sget_fc+0x21e/0x630 fs/super.c:541
get_tree_bdev+0x26b/0x620 fs/super.c:1273
vfs_get_tree+0x88/0x270 fs/super.c:1508
do_new_mount+0x28b/0xae0 fs/namespace.c:2994
do_mount fs/namespace.c:3337 [inline]
__do_sys_mount fs/namespace.c:3545 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f41788a78ba
RSP: 002b:00007f4176e17f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00000000000096cb RCX: 00007f41788a78ba
RDX: 0000000020009700 RSI: 0000000020009740 RDI: 00007f4176e17fe0
RBP: 00007f4176e18020 R08: 00007f4176e18020 R09: 0000000002000000
R10: 0000000002000000 R11: 0000000000000202 R12: 0000000020009700
R13: 0000000020009740 R14: 00007f4176e17fe0 R15: 0000000020000000
INFO: task syz-executor.3:26937 blocked for more than 145 seconds.
Not tainted 5.15.119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25504 pid:26937 ppid: 3528 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
rwsem_down_write_slowpath+0xebb/0x15c0 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x164/0x170 kernel/locking/rwsem.c:1542
prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
alloc_super+0x757/0x940 fs/super.c:270
sget+0x1f6/0x4d0 fs/super.c:624
mount_bdev+0xf0/0x3f0 fs/super.c:1351
legacy_get_tree+0xeb/0x180 fs/fs_context.c:610
vfs_get_tree+0x88/0x270 fs/super.c:1508
do_new_mount+0x28b/0xae0 fs/namespace.c:2994
do_mount fs/namespace.c:3337 [inline]
__do_sys_mount fs/namespace.c:3545 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f049c6ae8ba
RSP: 002b:00007f049ac1ef88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000001ee53 RCX: 00007f049c6ae8ba
RDX: 0000000020000000 RSI: 000000002001ee80 RDI: 00007f049ac1efe0
RBP: 00007f049ac1f020 R08: 00007f049ac1f020 R09: 0000000000a00840
R10: 0000000000a00840 R11: 0000000000000202 R12: 0000000020000000
R13: 000000002001ee80 R14: 00007f049ac1efe0 R15: 0000000020001340
INFO: task syz-executor.0:26941 blocked for more than 145 seconds.
Not tainted 5.15.119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24536 pid:26941 ppid: 9941 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
rwsem_down_write_slowpath+0xebb/0x15c0 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x164/0x170 kernel/locking/rwsem.c:1542
register_shrinker_prepared mm/vmscan.c:653 [inline]
register_shrinker+0x49/0x120 mm/vmscan.c:665
nfsd_reply_cache_init+0x205/0x4c0 fs/nfsd/nfscache.c:185
nfsd_init_net+0x76/0x3a0 fs/nfsd/nfsctl.c:1477
ops_init+0x356/0x600 net/core/net_namespace.c:135
setup_net+0x358/0x9e0 net/core/net_namespace.c:329
copy_net_ns+0x395/0x5d0 net/core/net_namespace.c:473
create_new_namespaces+0x425/0x7a0 kernel/nsproxy.c:110
copy_namespaces+0x365/0x3b0 kernel/nsproxy.c:178
copy_process+0x1841/0x3ef0 kernel/fork.c:2201
kernel_clone+0x210/0x960 kernel/fork.c:2601
__do_sys_clone3 kernel/fork.c:2876 [inline]
__se_sys_clone3+0x3e1/0x430 kernel/fork.c:2860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f9e18efd389
RSP: 002b:00007f9e1742d038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007f9e1901d120 RCX: 00007f9e18efd389
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007f9e1742d050
RBP: 00007f9e18f48493 R08: 0000000000000000 R09: 0000000000000058
R10: 00007f9e1742d050 R11: 0000000000000246 R12: 0000000000000058
R13: 00007ffce3b268df R14: 00007f9e1742d300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91c5e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
4 locks held by kworker/u4:5/1490:
#0: ffff888011db5138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2280
#1: ffffc9000599fd20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2282
#2: ffffffff8d9d2510 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf1/0xb60 net/core/net_namespace.c:558
#3: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: unregister_shrinker+0x60/0x320 mm/vmscan.c:678
2 locks held by getty/3263:
#0: ffff888024dc4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900024a32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1da0 drivers/tty/n_tty.c:2147
3 locks held by syz-executor.2/26900:
#0: ffff88807f2a0460 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x600/0xff0 fs/read_write.c:1248
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: shrink_slab+0x125/0x960 mm/vmscan.c:908
#2: ffff888074320158 (&qinf->qi_tree_lock){+.+.}-{3:3}, at: xfs_qm_dqfree_one+0x66/0x170 fs/xfs/xfs_qm.c:1607
3 locks held by syz-executor.1/26912:
#0: ffff8880120de448 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: get_tree_bdev+0x197/0x620 fs/super.c:1263
#1: ffff88807b44e0e0 (&type->s_umount_key#61/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#2: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#2: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
3 locks held by syz-executor.5/26913:
#0: ffff888016eb20e0 (&type->s_umount_key#61/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffff888074320158 (&qinf->qi_tree_lock){+.+.}-{3:3}, at: xfs_qm_dquot_walk+0x132/0x4a0 fs/xfs/xfs_qm.c:73
#2: ffff888077356668 (&xfs_dquot_group_class){+.+.}-{3:3}, at: xfs_dqlock fs/xfs/xfs_dquot.h:133 [inline]
#2: ffff888077356668 (&xfs_dquot_group_class){+.+.}-{3:3}, at: xfs_qm_flush_one+0xca/0x350 fs/xfs/xfs_qm.c:1225
3 locks held by syz-executor.4/26931:
#0: ffff8880120e1208 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: get_tree_bdev+0x197/0x620 fs/super.c:1263
#1: ffff88807efba0e0 (&type->s_umount_key#61/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#2: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#2: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
3 locks held by syz-executor.3/26937:
#0: ffff8880120e0648 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: mount_bdev+0x8b/0x3f0 fs/super.c:1345
#1: ffff88803105e0e0 (&type->s_umount_key#86/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#2: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#2: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
2 locks held by syz-executor.0/26941:
#0: ffffffff8d9d2510 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x37b/0x5d0 net/core/net_namespace.c:469
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: register_shrinker_prepared mm/vmscan.c:653 [inline]
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: register_shrinker+0x49/0x120 mm/vmscan.c:665
2 locks held by syz-executor.5/26951:
#0: ffff8880340120e0 (&type->s_umount_key#23/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
2 locks held by syz-executor.2/26956:
#0: ffff8880342640e0 (&type->s_umount_key#23/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
2 locks held by syz-executor.1/26958:
#0: ffff88803425e0e0 (&type->s_umount_key#23/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
2 locks held by syz-executor.4/26961:
#0: ffff8880344540e0 (&type->s_umount_key#23/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
2 locks held by syz-executor.3/26964:
#0: ffff8880238520e0 (&type->s_umount_key#23/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
2 locks held by syz-executor.0/26967:
#0: ffff8880245680e0 (&type->s_umount_key#23/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
2 locks held by syz-executor.5/26978:
#0: ffff8880588cc0e0 (&type->s_umount_key#23/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
2 locks held by syz-executor.2/26979:
#0: ffff88801ed720e0 (&type->s_umount_key#23/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
2 locks held by syz-executor.1/26985:
#0: ffff88801b1b20e0 (&type->s_umount_key#23/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
2 locks held by syz-executor.4/26989:
#0: ffff88803771e0e0 (&type->s_umount_key#23/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
2 locks held by syz-executor.3/26992:
#0: ffff88807f3f60e0 (&type->s_umount_key#23/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
2 locks held by syz-executor.0/26995:
#0: ffff8880535620e0 (&type->s_umount_key#23/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
#1: ffffffff8c9ba430 (shrinker_rwsem){++++}-{3:3}, at: prealloc_shrinker+0x92/0x7c0 mm/vmscan.c:620
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 20696 Comm: kworker/u4:21 Not tainted 5.15.119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: phy8 ieee80211_iface_work
RIP: 0010:memset+0x1/0x40 mm/kasan/shadow.c:43
Code: 14 51 08 31 db eb d7 cc cc 89 f6 48 8b 0c 24 31 d2 e9 63 ef ff ff 0f 1f 00 89 f6 48 8b 0c 24 ba 01 00 00 00 e9 50 ef ff ff 55 <41> 56 53 48 89 d3 41 89 f6 48 89 fd 48 8b 4c 24 18 48 89 d6 ba 01
RSP: 0018:ffffc9000577f570 EFLAGS: 00000246
RAX: 0000000000000004 RBX: 0000000000000000 RCX: ffffc9000577f603
RDX: 0000000000000020 RSI: 0000000000000000 RDI: ffffc9000577f610
RBP: ffffc9000577f708 R08: 0000000000000c10 R09: ffff888054efdae2
R10: 0000000000000002 R11: dffffc0000000001 R12: ffffc9000577f610
R13: dffffc0000000000 R14: 1ffff92000aefec0 R15: ffff88807cde2800
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f8dbd3e600 CR3: 000000001edfa000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_parse_ch_switch_ie+0xe1/0x1050 net/mac80211/spectmgmt.c:33
ieee80211_ibss_process_chanswitch+0x291/0xf70 net/mac80211/ibss.c:803
ieee80211_rx_bss_info net/mac80211/ibss.c:1151 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1614 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1b47/0x2af0 net/mac80211/ibss.c:1643
ieee80211_iface_process_skb net/mac80211/iface.c:1441 [inline]
ieee80211_iface_work+0x78f/0xcc0 net/mac80211/iface.c:1495
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2307
worker_thread+0xaca/0x1280 kernel/workqueue.c:2454
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298