INFO: task syz.0.17:5945 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.17 state:D stack:24784 pid:5945 ppid:5894 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
schedule+0xbd/0x170 kernel/sched/core.c:6773
xlog_grant_head_wait+0x35c/0x820 fs/xfs/xfs_log.c:307
xlog_grant_head_check+0x25e/0x380 include/linux/spinlock.h:-1
xfs_log_reserve+0x348/0x970 fs/xfs/xfs_log.c:486
xfs_trans_reserve+0x225/0x690 fs/xfs/xfs_trans.c:194
xfs_trans_alloc+0x3df/0x790 fs/xfs/xfs_trans.c:283
xfs_trans_alloc_inode+0xb1/0x340 fs/xfs/xfs_trans.c:1190
xfs_attr_set+0x930/0x13e0 fs/xfs/libxfs/xfs_attr.c:1075
xfs_attr_change fs/xfs/xfs_xattr.c:117 [inline]
xfs_xattr_set+0x119/0x210 fs/xfs/xfs_xattr.c:162
__vfs_setxattr+0x431/0x470 fs/xattr.c:201
__vfs_setxattr_noperm+0x12d/0x5e0 fs/xattr.c:235
vfs_setxattr+0x16c/0x2f0 fs/xattr.c:322
do_setxattr fs/xattr.c:630 [inline]
path_setxattr+0x362/0x550 fs/xattr.c:659
__do_sys_setxattr fs/xattr.c:677 [inline]
__se_sys_setxattr fs/xattr.c:673 [inline]
__x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:673
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f240e38f749
RSP: 002b:00007fff63dfad78 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f240e5e5fa0 RCX: 00007f240e38f749
RDX: 0000200000000240 RSI: 0000200000000140 RDI: 0000200000000080
RBP: 00007f240e413f91 R08: 0000000000000002 R09: 0000000000000000
R10: 000000000000fe26 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f240e5e5fa0 R14: 00007f240e5e5fa0 R15: 0000000000000005
Showing all locks held in the system:
3 locks held by kworker/u4:1/12:
#0: ffff88802c346d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#0: ffff88802c346d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#1: ffffc90000117d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#1: ffffc90000117d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#2: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x14e0 net/ipv6/addrconf.c:4158
2 locks held by kworker/1:0/23:
#0: ffff888017872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#0: ffff888017872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#1: ffffc900001d7d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#1: ffffc900001d7d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
1 lock held by khungtaskd/29:
#0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
4 locks held by kworker/u4:8/2922:
#0: ffff8880b8e3c018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffffc9000c3a7d00 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#1: ffffc9000c3a7d00 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#2: ffff8880b8e29598 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x123/0x270 kernel/time/timer.c:999
#3: ffffffff97131cc8 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x6c/0x4b0 lib/debugobjects.c:709
4 locks held by kworker/u4:9/2949:
#0: ffff888017871538 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#0: ffff888017871538 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#1: ffffc9000c4e7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#1: ffffc9000c4e7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#2: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:286
#3: ffffffff8cd358f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#3: ffffffff8cd358f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x360/0x830 kernel/rcu/tree_exp.h:1004
2 locks held by getty/5525:
#0: ffff8880311520a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000326e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x425/0x1380 drivers/tty/n_tty.c:2217
3 locks held by kworker/1:3/5847:
#0: ffff888017870938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#0: ffff888017870938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#1: ffffc90004c3fd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#1: ffffc90004c3fd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#2: ffff88807d01f240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x26c/0x3170 drivers/net/netdevsim/fib.c:1491
3 locks held by syz.0.17/5945:
#0: ffff888023e38418 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412
#1: ffff88805e1492c8 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#1: ffff88805e1492c8 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: vfs_setxattr+0x145/0x2f0 fs/xattr.c:321
#2: ffff888023e38608 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0xb1/0x340 fs/xfs/xfs_trans.c:1190
3 locks held by syz.1.18/5975:
#0: ffff8880307e0418 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412
#1: ffff88805e112248 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#1: ffff88805e112248 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: vfs_setxattr+0x145/0x2f0 fs/xattr.c:321
#2: ffff8880307e0608 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0xb1/0x340 fs/xfs/xfs_trans.c:1190
3 locks held by syz.2.19/6010:
#0: ffff88807cda6418 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412
#1: ffff88805e112a08 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#1: ffff88805e112a08 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: vfs_setxattr+0x145/0x2f0 fs/xattr.c:321
#2: ffff88807cda6608 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0xb1/0x340 fs/xfs/xfs_trans.c:1190
3 locks held by syz.3.20/6040:
#0: ffff888079798418 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412
#1: ffff88805e14c908 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#1: ffff88805e14c908 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: vfs_setxattr+0x145/0x2f0 fs/xattr.c:321
#2: ffff888079798608 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0xb1/0x340 fs/xfs/xfs_trans.c:1190
3 locks held by syz.4.21/6075:
#0: ffff88802eee2418 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412
#1: ffff88805e114908 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#1: ffff88805e114908 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: vfs_setxattr+0x145/0x2f0 fs/xattr.c:321
#2: ffff88802eee2608 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0xb1/0x340 fs/xfs/xfs_trans.c:1190
3 locks held by syz.5.22/6111:
#0: ffff888053d36418 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412
#1: ffff88805e14e808 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#1: ffff88805e14e808 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: vfs_setxattr+0x145/0x2f0 fs/xattr.c:321
#2: ffff888053d36608 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0xb1/0x340 fs/xfs/xfs_trans.c:1190
3 locks held by syz.6.23/6152:
#0: ffff888026e58418 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412
#1: ffff88805e116808 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#1: ffff88805e116808 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: vfs_setxattr+0x145/0x2f0 fs/xattr.c:321
#2: ffff888026e58608 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0xb1/0x340 fs/xfs/xfs_trans.c:1190
3 locks held by syz.7.24/6190:
#0: ffff88804ff9a418 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412
#1: ffff888073f18b08 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#1: ffff888073f18b08 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: vfs_setxattr+0x145/0x2f0 fs/xattr.c:321
#2: ffff88804ff9a608 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0xb1/0x340 fs/xfs/xfs_trans.c:1190
3 locks held by syz.8.25/6225:
#0: ffff88804f1ce418 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412
#1: ffff888073ee8b08 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#1: ffff888073ee8b08 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: vfs_setxattr+0x145/0x2f0 fs/xattr.c:321
#2: ffff88804f1ce608 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0xb1/0x340 fs/xfs/xfs_trans.c:1190
1 lock held by syz-executor/6239:
#0: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
#0: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x76f/0xf10 net/core/rtnetlink.c:6469
2 locks held by dhcpcd/6255:
#0: ffff88804f880130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1767 [inline]
#0: ffff88804f880130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcc0 net/packet/af_packet.c:3258
#1: ffffffff8cd358f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#1: ffffffff8cd358f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x360/0x830 kernel/rcu/tree_exp.h:1004
1 lock held by dhcpcd/6256:
#0: ffff88807aed4130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1767 [inline]
#0: ffff88807aed4130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcc0 net/packet/af_packet.c:3258
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106
nmi_cpu_backtrace+0x39b/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf41/0xf80 kernel/hung_task.c:379
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1032 Comm: kworker/u4:6 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:lockdep_hardirqs_on_prepare+0xd1/0x760 kernel/locking/lockdep.c:4340
Code: 76 03 00 00 65 8b 05 66 c4 9b 7e 85 c0 0f 85 67 03 00 00 48 c7 c0 80 b4 e9 96 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 0b 05 00 00 <83> 3d 08 f2 82 15 00 75 6c 48 c7 44 24 40 00 00 00 00 9c 8f 44 24
RSP: 0018:ffffc9000466f0e0 EFLAGS: 00000097
RAX: 0000000000000004 RBX: 1ffff920008cde20 RCX: ffffffff96e9b403
RDX: dffffc0000000000 RSI: ffffffff8afc6f60 RDI: ffffffff8afc6f20
RBP: ffffc9000466f190 R08: ffffffff8e4a212f R09: 1ffffffff1c94425
R10: dffffc0000000000 R11: fffffbfff1c94426 R12: 0000000000000000
R13: ffffc9000466f240 R14: 0000000000080cc0 R15: 0000000000000286
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555b04ba4660 CR3: 000000000cb30000 CR4: 00000000003506e0
Call Trace:
trace_hardirqs_on+0x28/0x40 kernel/trace/trace_preemptirq.c:61
kasan_quarantine_put+0xd8/0x220 mm/kasan/quarantine.c:240
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1811 [inline]
slab_free_freelist_hook+0x130/0x1b0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
__kmem_cache_free+0xba/0x1f0 mm/slub.c:3843
ieee80211_inform_bss+0xba9/0x1060 net/mac80211/scan.c:160
rdev_inform_bss+0x106/0x410 net/wireless/rdev-ops.h:418
cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2986 [inline]
cfg80211_inform_bss_frame_data+0xb33/0x12b0 net/wireless/scan.c:3013
ieee80211_bss_info_update+0x70b/0x930 net/mac80211/scan.c:211
ieee80211_rx_bss_info net/mac80211/ibss.c:1124 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1613 [inline]
ieee80211_ibss_rx_queued_mgmt+0x17c9/0x2ac0 net/mac80211/ibss.c:1642
ieee80211_iface_process_skb net/mac80211/iface.c:1651 [inline]
ieee80211_iface_work+0x717/0xc70 net/mac80211/iface.c:1705
cfg80211_wiphy_work+0x225/0x260 net/wireless/core.c:437
process_one_work kernel/workqueue.c:2634 [inline]
process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711
worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293