INFO: task syz.8.25:6949 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.25 state:D stack:27688 pid:6949 tgid:6948 ppid:6782 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17fb/0x5570 kernel/sched/core.c:7239
__schedule_loop kernel/sched/core.c:7316 [inline]
schedule+0x160/0x2a0 kernel/sched/core.c:7331
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:7388
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x6ca/0x15e0 kernel/locking/mutex.c:821
scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
scsi_scan drivers/scsi/scsi_sysfs.c:151 [inline]
store_scan+0x4a6/0x540 drivers/scsi/scsi_sysfs.c:191
kernfs_fop_write_iter+0x3ad/0x540 fs/kernfs/file.c:345
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x5b1/0xb60 fs/read_write.c:687
ksys_write+0x14c/0x260 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0xfa/0x470 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f881279e0d9
RSP: 002b:00007f8811dfe028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8812a25fa0 RCX: 00007f881279e0d9
RDX: 0000000000000006 RSI: 0000200000000500 RDI: 0000000000000003
RBP: 00007f8812835024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8812a26038 R14: 00007f8812a25fa0 R15: 00007ffff4a843b8
INFO: task syz.8.25:6949 is blocked on a mutex likely owned by task syz.5.22:6946.
task:syz.5.22 state:D stack:25464 pid:6946 tgid:6945 ppid:6740 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17fb/0x5570 kernel/sched/core.c:7239
__schedule_loop kernel/sched/core.c:7316 [inline]
schedule+0x160/0x2a0 kernel/sched/core.c:7331
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:7388
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x6ca/0x15e0 kernel/locking/mutex.c:821
exp_funnel_lock kernel/rcu/tree_exp.h:343 [inline]
synchronize_rcu_expedited+0x389/0x770 kernel/rcu/tree_exp.h:961
blk_free_queue block/blk-core.c:307 [inline]
blk_put_queue+0xf1/0x150 block/blk-core.c:322
scsi_device_dev_release+0x55f/0xee0 drivers/scsi/scsi_sysfs.c:477
device_release+0xc0/0x1f0 drivers/base/core.c:-1
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x21e/0x550 lib/kobject.c:737
scsi_probe_and_add_lun+0x3188/0x49f0 drivers/scsi/scsi_scan.c:-1
__scsi_scan_target+0x1ec/0xe00 drivers/scsi/scsi_scan.c:1797
scsi_scan_channel drivers/scsi/scsi_scan.c:1885 [inline]
scsi_scan_host_selected+0x367/0x680 drivers/scsi/scsi_scan.c:1914
scsi_scan drivers/scsi/scsi_sysfs.c:151 [inline]
store_scan+0x4a6/0x540 drivers/scsi/scsi_sysfs.c:191
kernfs_fop_write_iter+0x3ad/0x540 fs/kernfs/file.c:345
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x5b1/0xb60 fs/read_write.c:687
ksys_write+0x14c/0x260 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0xfa/0x470 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fecddd9e0d9
RSP: 002b:00007fecdd3fe028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fecde025fa0 RCX: 00007fecddd9e0d9
RDX: 0000000000000006 RSI: 0000200000000500 RDI: 0000000000000003
RBP: 00007fecdde35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fecde026038 R14: 00007fecde025fa0 R15: 00007ffd848d2998
INFO: task syz.9.26:6952 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.26 state:D stack:27688 pid:6952 tgid:6951 ppid:6785 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17fb/0x5570 kernel/sched/core.c:7239
__schedule_loop kernel/sched/core.c:7316 [inline]
schedule+0x160/0x2a0 kernel/sched/core.c:7331
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:7388
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x6ca/0x15e0 kernel/locking/mutex.c:821
scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
scsi_scan drivers/scsi/scsi_sysfs.c:151 [inline]
store_scan+0x4a6/0x540 drivers/scsi/scsi_sysfs.c:191
kernfs_fop_write_iter+0x3ad/0x540 fs/kernfs/file.c:345
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x5b1/0xb60 fs/read_write.c:687
ksys_write+0x14c/0x260 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0xfa/0x470 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fb073d9e0d9
RSP: 002b:00007fb0733fe028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb074025fa0 RCX: 00007fb073d9e0d9
RDX: 0000000000000006 RSI: 0000200000000500 RDI: 0000000000000003
RBP: 00007fb073e35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb074026038 R14: 00007fb074025fa0 R15: 00007ffefce707e8
INFO: task syz.9.26:6952 is blocked on a mutex likely owned by task syz.5.22:6946.
task:syz.5.22 state:D stack:25464 pid:6946 tgid:6945 ppid:6740 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17fb/0x5570 kernel/sched/core.c:7239
__schedule_loop kernel/sched/core.c:7316 [inline]
schedule+0x160/0x2a0 kernel/sched/core.c:7331
synchronize_rcu_expedited+0x580/0x770 kernel/rcu/tree_exp.h:976
blk_free_queue block/blk-core.c:307 [inline]
blk_put_queue+0xf1/0x150 block/blk-core.c:322
scsi_device_dev_release+0x55f/0xee0 drivers/scsi/scsi_sysfs.c:477
device_release+0xc0/0x1f0 drivers/base/core.c:-1
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x21e/0x550 lib/kobject.c:737
scsi_probe_and_add_lun+0x3188/0x49f0 drivers/scsi/scsi_scan.c:-1
__scsi_scan_target+0x1ec/0xe00 drivers/scsi/scsi_scan.c:1797
scsi_scan_channel drivers/scsi/scsi_scan.c:1885 [inline]
scsi_scan_host_selected+0x367/0x680 drivers/scsi/scsi_scan.c:1914
scsi_scan drivers/scsi/scsi_sysfs.c:151 [inline]
store_scan+0x4a6/0x540 drivers/scsi/scsi_sysfs.c:191
kernfs_fop_write_iter+0x3ad/0x540 fs/kernfs/file.c:345
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x5b1/0xb60 fs/read_write.c:687
ksys_write+0x14c/0x260 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0xfa/0x470 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fecddd9e0d9
RSP: 002b:00007fecdd3fe028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fecde025fa0 RCX: 00007fecddd9e0d9
RDX: 0000000000000006 RSI: 0000200000000500 RDI: 0000000000000003
RBP: 00007fecdde35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fecde026038 R14: 00007fecde025fa0 R15: 00007ffd848d2998
INFO: task syz.7.24:6954 blocked for more than 145 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.24 state:D stack:27720 pid:6954 tgid:6953 ppid:6780 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17fb/0x5570 kernel/sched/core.c:7239
__schedule_loop kernel/sched/core.c:7316 [inline]
schedule+0x160/0x2a0 kernel/sched/core.c:7331
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:7388
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x6ca/0x15e0 kernel/locking/mutex.c:821
scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
scsi_scan drivers/scsi/scsi_sysfs.c:151 [inline]
store_scan+0x4a6/0x540 drivers/scsi/scsi_sysfs.c:191
kernfs_fop_write_iter+0x3ad/0x540 fs/kernfs/file.c:345
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x5b1/0xb60 fs/read_write.c:687
ksys_write+0x14c/0x260 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0xfa/0x470 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fe22059e0d9
RSP: 002b:00007fe21fbfe028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe220825fa0 RCX: 00007fe22059e0d9
RDX: 0000000000000006 RSI: 0000200000000500 RDI: 0000000000000003
RBP: 00007fe220635024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe220826038 R14: 00007fe220825fa0 R15: 00007ffe16f8adc8
INFO: task syz.7.24:6954 is blocked on a mutex likely owned by task syz.5.22:6946.
task:syz.5.22 state:D stack:25464 pid:6946 tgid:6945 ppid:6740 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17fb/0x5570 kernel/sched/core.c:7239
__schedule_loop kernel/sched/core.c:7316 [inline]
schedule+0x160/0x2a0 kernel/sched/core.c:7331
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:7388
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x6ca/0x15e0 kernel/locking/mutex.c:821
exp_funnel_lock kernel/rcu/tree_exp.h:343 [inline]
synchronize_rcu_expedited+0x389/0x770 kernel/rcu/tree_exp.h:961
blk_free_queue block/blk-core.c:308 [inline]
blk_put_queue+0xfd/0x150 block/blk-core.c:322
scsi_device_dev_release+0x55f/0xee0 drivers/scsi/scsi_sysfs.c:477
device_release+0xc0/0x1f0 drivers/base/core.c:-1
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x21e/0x550 lib/kobject.c:737
scsi_probe_and_add_lun+0x3188/0x49f0 drivers/scsi/scsi_scan.c:-1
__scsi_scan_target+0x1ec/0xe00 drivers/scsi/scsi_scan.c:1797
scsi_scan_channel drivers/scsi/scsi_scan.c:1885 [inline]
scsi_scan_host_selected+0x367/0x680 drivers/scsi/scsi_scan.c:1914
scsi_scan drivers/scsi/scsi_sysfs.c:151 [inline]
store_scan+0x4a6/0x540 drivers/scsi/scsi_sysfs.c:191
kernfs_fop_write_iter+0x3ad/0x540 fs/kernfs/file.c:345
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x5b1/0xb60 fs/read_write.c:687
ksys_write+0x14c/0x260 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0xfa/0x470 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fecddd9e0d9
RSP: 002b:00007fecdd3fe028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fecde025fa0 RCX: 00007fecddd9e0d9
RDX: 0000000000000006 RSI: 0000200000000500 RDI: 0000000000000003
RBP: 00007fecdde35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fecde026038 R14: 00007fecde025fa0 R15: 00007ffd848d2998
Showing all locks held in the system:
locks held by kworker/u8:1/13: 3, on CPU#1:
#0: ffff888031c72940 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#0: ffff888031c72940 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0xa16/0x14c0 kernel/workqueue.c:3405
#1: ffffc90000127c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#1: ffffc90000127c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa16/0x14c0 kernel/workqueue.c:3405
#2: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#2: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x112/0x15c0 net/ipv6/addrconf.c:4229
locks held by khungtaskd/30: 1, last CPU#1:
#0: ffffffff8e53fb00 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#0: ffffffff8e53fb00 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#0: ffffffff8e53fb00 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2a/0x180 kernel/locking/lockdep.c:6793
locks held by kworker/u8:3/48: 3, on CPU#0:
#0: ffff88801aede140 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#0: ffff88801aede140 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0xa16/0x14c0 kernel/workqueue.c:3405
#1: ffffc90000b87c40 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#1: ffffc90000b87c40 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0xa16/0x14c0 kernel/workqueue.c:3405
#2: ffffffff8f93f708 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xfe/0x890 net/core/net_namespace.c:673
locks held by kworker/u8:5/188: 2, on CPU#0:
#0: ffff88813fe3c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#0: ffff88813fe3c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xa16/0x14c0 kernel/workqueue.c:3405
#1: ffffc9000313fc40 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#1: ffffc9000313fc40 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa16/0x14c0 kernel/workqueue.c:3405
locks held by kworker/u8:6/1039: 3, on CPU#0:
#0: ffff88813fe3c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#0: ffff88813fe3c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xa16/0x14c0 kernel/workqueue.c:3405
#1: ffffc900054a7c40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#1: ffffc900054a7c40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0xa16/0x14c0 kernel/workqueue.c:3405
#2: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:313
locks held by kworker/u8:9/2960: 2, on CPU#0:
#0: ffff88813fe3c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#0: ffff88813fe3c140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xa16/0x14c0 kernel/workqueue.c:3405
#1: ffffc9000d1a7c40 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#1: ffffc9000d1a7c40 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa16/0x14c0 kernel/workqueue.c:3405
locks held by syslogd/4952: 1, last CPU#0:
#0: ffff8880b863b2a0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x160 kernel/sched/core.c:667
locks held by getty/5358: 2, on CPU#0:
#0: ffff8880355170a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900032332e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x456/0x1350 drivers/tty/n_tty.c:2211
locks held by kworker/0:4/5783: 3, last CPU#0:
#0: ffff8880b863b2a0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x160 kernel/sched/core.c:667
#1: ffff8880b8624408 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:218 [inline]
#1: ffff8880b8624408 (psi_seq){-.-.}-{0:0}, at: __schedule+0x2a4b/0x5570 kernel/sched/core.c:7233
#2: ffff888056fc5120 (&r->consumer_lock#2){+.+.}-{3:3}, at: spin_lock_bh include/linux/spinlock.h:353 [inline]
#2: ffff888056fc5120 (&r->consumer_lock#2){+.+.}-{3:3}, at: ptr_ring_consume_bh include/linux/ptr_ring.h:375 [inline]
#2: ffff888056fc5120 (&r->consumer_lock#2){+.+.}-{3:3}, at: wg_packet_decrypt_worker+0x90b/0xda0 drivers/net/wireguard/receive.c:499
locks held by syz.5.22/6946: 6, on CPU#1:
#0: ffff88801d764ef0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88807cb68460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88807cb68460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff8880549a2480 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
#5: ffffffff8e545168 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:343 [inline]
#5: ffffffff8e545168 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x389/0x770 kernel/rcu/tree_exp.h:961
locks held by syz.8.25/6949: 5, on CPU#0:
#0: ffff888079d5c9b0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88805a0d6460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88805a0d6460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff888068b88480 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.9.26/6952: 5, on CPU#0:
#0: ffff888034104630 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88807a850460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88807a850460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff88805678d880 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.7.24/6954: 5, on CPU#1:
#0: ffff88807eb0a0f0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88807a494460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88807a494460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff88805678e080 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.0.27/7406: 5, on CPU#0:
#0: ffff888035af5430 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88807aaca460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88807aaca460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff8880538f5080 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.4.28/7409: 5, on CPU#0:
#0: ffff8880317d4d30 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff888068b08460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff888068b08460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff888054a23080 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.2.30/7425: 5, on CPU#1:
#0: ffff88807ac79430 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88807c068460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88807c068460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff888053a71c80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by kworker/0:8/7431: 3, on CPU#0:
#0: ffff88813ff37140 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#0: ffff88813ff37140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa16/0x14c0 kernel/workqueue.c:3405
#1: ffffc9000477fc40 (netdev_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#1: ffffc9000477fc40 (netdev_work){+.+.}-{0:0}, at: process_scheduled_works+0xa16/0x14c0 kernel/workqueue.c:3405
#2: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: netdev_work_proc+0x6b/0x770 net/core/netdev_work.c:132
locks held by syz.1.29/7433: 5, on CPU#1:
#0: ffff888034a98d30 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88802bdb0460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88802bdb0460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff8880535dd480 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.3.31/7436: 5, on CPU#0:
#0: ffff888079ba5cf0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88807fc90460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88807fc90460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff8880537ba080 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.5.32/7608: 5, on CPU#1:
#0: ffff88807f139970 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff888079c74460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff888079c74460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff88804f8a5080 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.7.34/7637: 5, on CPU#1:
#0: ffff88807f12e2b0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88802f3d0460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88802f3d0460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff8880535e0880 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.6.33/7644: 5, on CPU#1:
#0: ffff888079aa6ef0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff888031240460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff888031240460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff88804fa7ac80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.8.35/7651: 5, on CPU#0:
#0: ffff88802aee27f0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88807d128460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88807d128460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff88804f0ad080 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.9.36/7654: 5, on CPU#0:
#0: ffff888025294630 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff8880572e6460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff8880572e6460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff88804f249880 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.0.37/7763: 5, on CPU#0:
#0: ffff88806fca2ef0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff8880617b8460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff8880617b8460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff888050753880 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.2.38/7823: 5, on CPU#1:
#0: ffff888079d5d270 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88807cf3c460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88807cf3c460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff88804c5d1880 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.4.39/7841: 5, on CPU#0:
#0: ffff88807745cd30 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88807fc22460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88807fc22460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff888033654c80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.3.41/7845: 5, on CPU#0:
#0: ffff88807f12ed30 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff888078064460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff888078064460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff88804be80c80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.1.40/7848: 5, on CPU#0:
#0: ffff88807928beb0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88804e284460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88804e284460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff8880505fb080 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.5.42/7900: 5, on CPU#1:
#0: ffff888076c770b0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88804e720460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88804e720460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff88804be6cc80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.6.43/8033: 5, on CPU#0:
#0: ffff8880493a40f0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff8880314ae460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff8880314ae460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff888049394480 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.8.45/8045: 5, on CPU#1:
#0: ffff8880306d6630 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88804d376460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88804d376460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff88804c9f3880 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.9.46/8071: 5, on CPU#0:
#0: ffff88801d760630 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88804a506460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88804a506460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff88807a574c80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.7.44/8074: 5, on CPU#0:
#0: ffff8880719527f0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88807cfe4460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88807cfe4460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff8880567f1880 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.0.47/8111: 5, on CPU#0:
#0: ffff88807a155270 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88802b15a460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88802b15a460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff888054bca080 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.2.48/8220: 5, on CPU#1:
#0: ffff888070449970 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88807b2ea460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88807b2ea460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff888052c96480 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.3.49/8255: 5, on CPU#0:
#0: ffff88807f10e0f0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88805c3ca460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88805c3ca460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff888044beec80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.1.51/8301: 5, on CPU#1:
#0: ffff88807123ad30 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88804431e460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88804431e460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff888046bdb480 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.4.50/8310: 5, on CPU#0:
#0: ffff8880772675f0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88807e676460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88807e676460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff88807a5af480 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz.5.52/8313: 5, on CPU#0:
#0: ffff888079bc77b0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x242/0x310 fs/file.c:1259
#1: ffff88807fc44460 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2739 [inline]
#1: ffff88807fc44460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb60 fs/read_write.c:683
#2: ffff88807e4a7080 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e1/0x540 fs/kernfs/file.c:336
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#3: ffff8880284123c8 (kn->active#58){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x234/0x540 fs/kernfs/file.c:337
#4: ffff888027ac40d8 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x18c/0x680 drivers/scsi/scsi_scan.c:1906
locks held by syz-executor/8316: 1, on CPU#0:
#0: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#0: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#0: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x89f/0x1c70 net/core/rtnetlink.c:4158
locks held by syz-executor/8357: 1, on CPU#0:
#0: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#0: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#0: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x89f/0x1c70 net/core/rtnetlink.c:4158
locks held by syz-executor/8367: 1, on CPU#0:
#0: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#0: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#0: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x89f/0x1c70 net/core/rtnetlink.c:4158
locks held by syz-executor/8373: 1, on CPU#1:
#0: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#0: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x460/0x19e0 net/ipv4/devinet.c:978
locks held by syz-executor/8375: 1, on CPU#0:
#0: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#0: ffffffff8f94cc00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x460/0x19e0 net/ipv4/devinet.c:978
locks held by dhcpcd/8377: 2, on CPU#0:
#0: ffff88805c380258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1713 [inline]
#0: ffff88805c380258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x33/0xd50 net/packet/af_packet.c:3229
#1: ffffffff8e545168 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:343 [inline]
#1: ffffffff8e545168 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x389/0x770 kernel/rcu/tree_exp.h:961
locks held by dhcpcd/8378: 1, on CPU#0:
#0: ffff88802e9c0258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1713 [inline]
#0: ffff88802e9c0258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x33/0xd50 net/packet/af_packet.c:3229
locks held by dhcpcd/8389: 1, on CPU#1:
#0: ffff88805bc1e258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1713 [inline]
#0: ffff88805bc1e258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x33/0xd50 net/packet/af_packet.c:3229
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
nmi_cpu_backtrace+0x270/0x2d0 lib/nmi_backtrace.c:123
nmi_trigger_cpumask_backtrace+0x179/0x360 lib/nmi_backtrace.c:66
trigger_all_cpu_backtrace include/linux/nmi.h:164 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x131/0x170 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
watchdog+0x16cc/0x1730 kernel/hung_task.c:561
kthread+0x387/0x470 kernel/kthread.c:436
ret_from_fork+0x50c/0xb60 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 8387 Comm: kworker/u8:12 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:rcu_preempt_read_exit kernel/rcu/tree_plugin.h:398 [inline]
RIP: 0010:__rcu_read_unlock+0x32/0xe0 kernel/rcu/tree_plugin.h:435
Code: 53 49 bf 00 00 00 00 00 fc ff df 65 48 8b 3d 9d 6f 40 11 48 8d 9f c4 04 00 00 49 89 dc 49 c1 ec 03 43 0f b6 04 3c 84 c0 75 4d 0b 75 1d 4c 8d b7 c8 04 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04
RSP: 0018:ffffc9000d0b74f0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880468504c4 RCX: 8000000000000001
RDX: 0000000000000004 RSI: ffffffff8df68e6f RDI: ffff888046850000
RBP: 1ffffffff210f401 R08: ffffc9000d0b79e0 R09: 0000000000000000
R10: ffffc9000d0b7618 R11: fffff52001a16ec5 R12: 1ffff11008d0a098
R13: ffffffff8175a82b R14: ffffc9000d0b75c8 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff88812577d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557c269b3168 CR3: 000000007a17e000 CR4: 00000000003526f0
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:873 [inline]
class_rcu_destructor include/linux/rcupdate.h:1183 [inline]
unwind_next_frame+0x1bab/0x2550 arch/x86/kernel/unwind_orc.c:709
arch_stack_walk+0x117/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa5/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3a/0x70 mm/kasan/common.c:78
poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
__kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:415
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5334 [inline]
__kmalloc_node_track_caller_noprof+0x4c3/0x740 mm/slub.c:5471
kmalloc_reserve net/core/skbuff.c:637 [inline]
__alloc_skb+0x2bd/0x7a0 net/core/skbuff.c:715
alloc_skb include/linux/skbuff.h:1384 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:819 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:876 [inline]
nsim_dev_trap_report_work+0x25b/0xb30 drivers/net/netdevsim/dev.c:922
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa84/0x14c0 kernel/workqueue.c:3405
worker_thread+0xa49/0xfb0 kernel/workqueue.c:3486
kthread+0x387/0x470 kernel/kthread.c:436
ret_from_fork+0x50c/0xb60 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245