INFO: task syz.3.166:6761 blocked for more than 143 seconds.
Not tainted 6.11.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.166 state:D stack:22648 pid:6761 tgid:6760 ppid:5710 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
jfs_flush_journal+0x72c/0xec0 fs/jfs/jfs_logmgr.c:1564
jfs_sync_fs+0x80/0xa0 fs/jfs/super.c:684
sync_filesystem+0x1c8/0x230 fs/sync.c:66
jfs_remount+0x136/0x6b0 fs/jfs/super.c:432
reconfigure_super+0x445/0x880 fs/super.c:1083
vfs_cmd_reconfigure fs/fsopen.c:263 [inline]
vfs_fsconfig_locked fs/fsopen.c:292 [inline]
__do_sys_fsconfig fs/fsopen.c:473 [inline]
__se_sys_fsconfig+0xb6e/0xf80 fs/fsopen.c:345
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: 0033:0x7f73ef179e79
RSP: 002b:00007f73efeab038 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007f73ef315f80 RCX: 00007f73ef179e79
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 000000000000000a
RBP: 00007f73ef1e793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f73ef315f80 R15: 00007ffe71d87248
Showing all locks held in the system:
3 locks held by kworker/u8:0/11:
#0: ffff88802a726948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88802a726948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90000107d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90000107d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa72588 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4194
1 lock held by khungtaskd/30:
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
3 locks held by kworker/u8:2/35:
#0: ffff888015489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff888015489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90000ab7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90000ab7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa72588 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
6 locks held by kworker/u8:7/2509:
#0: ffff8880162e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff8880162e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc900096c7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc900096c7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa659d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
#3: ffffffff8fa72588 (rtnl_mutex){+.+.}-{3:3}, at: wiphy_unregister+0x236/0xb00 net/wireless/core.c:1100
#4: ffff8880459d8768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:6014 [inline]
#4: ffff8880459d8768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_unregister+0x240/0xb00 net/wireless/core.c:1101
#5: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline]
#5: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:958
2 locks held by kworker/u8:9/2560:
#0: ffff8880b933e998 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560
#1: ffff8880b9328948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:989
2 locks held by dhcpcd/4884:
#0: ffff888060f3f678 (nlk_cb_mutex-ROUTE){+.+.}-{3:3}, at: netlink_dump+0xcb/0xd80 net/netlink/af_netlink.c:2271
#1: ffffffff8fa72588 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#1: ffffffff8fa72588 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_dumpit+0x99/0x200 net/core/rtnetlink.c:6506
2 locks held by getty/4968:
#0: ffff88802b2c20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by syz.3.166/6761:
#0: ffff888021412470 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:471 [inline]
#0: ffff888021412470 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 fs/fsopen.c:345
#1: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: vfs_cmd_reconfigure fs/fsopen.c:262 [inline]
#1: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: vfs_fsconfig_locked fs/fsopen.c:292 [inline]
#1: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:473 [inline]
#1: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: __se_sys_fsconfig+0xb64/0xf80 fs/fsopen.c:345
1 lock held by syz.3.238/7432:
#0: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.4.271/7818:
#0: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.3.288/7937:
#0: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.0.300/8053:
#0: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.3.342/8405:
#0: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888055d380e0 (&type->s_umount_key#78){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz-executor/8525:
#0: ffffffff8fa72588 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa72588 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
1 lock held by syz-executor/8618:
#0: ffffffff8fa72588 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa72588 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
7 locks held by syz-executor/8750:
#0: ffff88802feaa420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2881 [inline]
#0: ffff88802feaa420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
#1: ffff888019680488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff888023157f08 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8f30eb48 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
#4: ffff88806a70b0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#4: ffff88806a70b0e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1094 [inline]
#4: ffff88806a70b0e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1292
#5: ffff88806a708250 (&devlink->lock_key#26){+.+.}-{3:3}, at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1672
#6: ffffffff8fa72588 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x71/0x5c0 drivers/net/netdevsim/netdev.c:773
1 lock held by syz-executor/8801:
#0: ffffffff8fa72588 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa72588 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
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
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 2534 Comm: kworker/u8:8 Not tainted 6.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:get_running_cputimer include/linux/sched/cputime.h:73 [inline]
RIP: 0010:account_group_exec_runtime include/linux/sched/cputime.h:164 [inline]
RIP: 0010:update_curr_task+0x7c/0x370 kernel/sched/fair.c:1132
Code: 16 e8 f8 48 14 00 84 c0 75 0d 80 3d df 24 7b 0e 00 0f 84 ec 01 00 00 49 8d 9f 10 09 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <74> 08 48 89 df e8 5a 2e 92 00 4c 8b 23 49 8d 9c 24 98 01 00 00 48
RSP: 0018:ffffc90009a17808 EFLAGS: 00000046
RAX: 1ffff110054188a2 RBX: ffff88802a0c4510 RCX: ffffffff81657ac9
RDX: 0000000000000000 RSI: ffffffff8c3f9ae0 RDI: ffffffff8c3f9aa0
RBP: ffffffffffdb1c8d R08: ffffffff8ff6cbaf R09: 1ffffffff1fed975
R10: dffffc0000000000 R11: fffffbfff1fed976 R12: 0000001daaa61b3f
R13: dffffc0000000000 R14: 0000000000003e42 R15: ffff88802a0c3c00
FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f96b68e8178 CR3: 0000000023bcc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
update_curr+0x55a/0xac0 kernel/sched/fair.c:1173
enqueue_entity+0x63/0x1930 kernel/sched/fair.c:5293
enqueue_task_fair+0x173/0x920 kernel/sched/fair.c:6774
enqueue_task+0x1a5/0x300 kernel/sched/core.c:1979
activate_task kernel/sched/core.c:2009 [inline]
ttwu_do_activate+0x1d1/0x7e0 kernel/sched/core.c:3582
ttwu_queue kernel/sched/core.c:3846 [inline]
try_to_wake_up+0x884/0x1470 kernel/sched/core.c:4167
kick_pool+0x45c/0x620 kernel/workqueue.c:1281
process_one_work kernel/workqueue.c:3189 [inline]
process_scheduled_works+0x745/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
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