INFO: task syz.3.226:6735 blocked for more than 143 seconds.
Not tainted 6.12.0-rc2-syzkaller-00307-g36c254515dc6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.226 state:D stack:24720 pid:6735 tgid:6733 ppid:5842 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0xef5/0x5750 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6774
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2591
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
coredump_wait fs/coredump.c:418 [inline]
do_coredump+0x82f/0x4160 fs/coredump.c:575
get_signal+0x237c/0x26d0 kernel/signal.c:2902
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0fe657fdc4
RSP: 002b:00007f0fe72a4ed0 EFLAGS: 00000246 ORIG_RAX: 000000000000002d
RAX: ffffffffffffffda RBX: 00007f0fe72a4fc0 RCX: 00007f0fe657fdc4
RDX: 0000000000001000 RSI: 00007f0fe72a5010 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00007f0fe72a4f68 R14: 00007f0fe72a5010 R15: 0000000000000000
Showing all locks held in the system:
3 locks held by kworker/u8:0/11:
#0: ffff88814c2b4948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204
#1: ffffc90000107d80 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
#2: ffffffff8fac34a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xcf/0x14d0 net/ipv6/addrconf.c:4196
1 lock held by khungtaskd/30:
#0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
3 locks held by kworker/u8:5/1169:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204
#1: ffffc90004cc7d80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
#2: ffffffff8fac34a8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0x51/0xc0 net/core/link_watch.c:276
1 lock held by dhcpcd/4899:
#0: ffffffff8fac34a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fac34a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6672
2 locks held by getty/4988:
#0: ffff88814c6c30a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
3 locks held by kworker/0:5/5285:
#0: ffff88801ac80948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204
#1: ffffc900042dfd80 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
#2: ffffffff8fac34a8 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
3 locks held by kworker/u8:9/5649:
#0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204
#1: ffffc90004797d80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
#2: ffffffff8faad890 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xb40 net/core/net_namespace.c:580
2 locks held by syz.3.226/6734:
3 locks held by kworker/u8:19/7782:
#0: ffff888145e8a948 ((wq_completion)cfg80211){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204
#1: ffffc90009a77d80 ((work_completion)(&(&rdev->dfs_update_channels_wk)->work)){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
#2: ffffffff8fac34a8 (rtnl_mutex){+.+.}-{3:3}, at: cfg80211_dfs_channels_update_work+0xd0/0x640 net/wireless/mlme.c:1021
2 locks held by kworker/u8:27/7791:
#0: ffff8880b873ee98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:593
#1: ffffc9000341fd80 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
1 lock held by syz-executor/8667:
#0: ffffffff8fac34a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fac34a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/8742:
#0: ffffffff8fac34a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fac34a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6672
7 locks held by syz-executor/8806:
#0: ffff88802e45c420 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12f/0x260 fs/read_write.c:736
#1: ffff88807d046088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x27b/0x500 fs/kernfs/file.c:325
#2: ffff88802772e4b8 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x500 fs/kernfs/file.c:326
#3: ffffffff8f069588 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd2/0x4b0 drivers/net/netdevsim/bus.c:216
#4: ffff888026d9d0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff888026d9d0e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888026d9d0e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
#5: ffff888026d9e250 (&devlink->lock_key#13){+.+.}-{3:3}, at: nsim_drv_remove+0x4a/0x1d0 drivers/net/netdevsim/dev.c:1672
#6: ffffffff8fac34a8 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x6f/0x6b0 drivers/net/netdevsim/netdev.c:773
1 lock held by syz.1.586/8906:
#0: ffffffff8ddc30f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc2-syzkaller-00307-g36c254515dc6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf0c/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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: 8906 Comm: syz.1.586 Not tainted 6.12.0-rc2-syzkaller-00307-g36c254515dc6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:xas_load+0x0/0x5b0 lib/xarray.c:237
Code: e7 f6 e9 e2 fa ff ff 4c 89 ff e8 8b d2 e7 f6 e9 a7 fa ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 41 57 41 56 41 55 41 54 55 48 89 fd 53 48 83 ec 18 e8
RSP: 0018:ffffc900055af0d0 EFLAGS: 00000093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81c1e498
RDX: ffff88806b9c5a00 RSI: ffffffff8b0675c3 RDI: ffffc900055af1a8
RBP: ffff88807bd02ad0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 1ffff92000ab5e31
R13: 0000000000000001 R14: ffff88807bd02b20 R15: ffffc900055af1a8
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005562c24c8a18 CR3: 000000000db7c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
xas_store+0xb1b/0x1960 lib/xarray.c:790
page_cache_delete mm/filemap.c:150 [inline]
__filemap_remove_folio+0x368/0x570 mm/filemap.c:233
filemap_remove_folio+0xc8/0x210 mm/filemap.c:265
truncate_inode_folio+0x49/0x70 mm/truncate.c:178
shmem_undo_range+0x36e/0x1170 mm/shmem.c:1028
shmem_truncate_range mm/shmem.c:1144 [inline]
shmem_evict_inode+0x3a3/0xba0 mm/shmem.c:1272
evict+0x409/0x970 fs/inode.c:725
iput_final fs/inode.c:1877 [inline]
iput fs/inode.c:1903 [inline]
iput+0x530/0x890 fs/inode.c:1889
dentry_unlink_inode+0x29c/0x480 fs/dcache.c:412
__dentry_kill+0x1d0/0x600 fs/dcache.c:615
shrink_kill fs/dcache.c:1060 [inline]
shrink_dentry_list+0x140/0x5d0 fs/dcache.c:1087
shrink_dcache_parent+0xe2/0x530 fs/dcache.c:1521
do_one_tree fs/dcache.c:1550 [inline]
shrink_dcache_for_umount+0xa1/0x3e0 fs/dcache.c:1567
generic_shutdown_super+0x76/0x3d0 fs/super.c:620
kill_anon_super fs/super.c:1237 [inline]
kill_litter_super+0x70/0xa0 fs/super.c:1247
deactivate_locked_super+0xbe/0x1a0 fs/super.c:473
deactivate_super+0xde/0x100 fs/super.c:506
cleanup_mnt+0x222/0x450 fs/namespace.c:1373
task_work_run+0x14e/0x250 kernel/task_work.c:228
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xadd/0x2d70 kernel/exit.c:939
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
get_signal+0x2658/0x26d0 kernel/signal.c:2917
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f720617dff9
Code: Unable to access opcode bytes at 0x7f720617dfcf.
RSP: 002b:00007ffc9a561708 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 00007ffc9a561830 RCX: 00007f720617dff9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7206335f8c
RBP: 00007f7206335f8c R08: 00007f7206f9c080 R09: 00007ffc9a5619ff
R10: 00007ffc9a561810 R11: 0000000000000246 R12: 000000000004292f
R13: 00007ffc9a561810 R14: 0000000000000032 R15: 00000000000428fd