INFO: task syz.0.1982:16146 blocked for more than 143 seconds.
Not tainted 6.11.0-rc7-syzkaller-00135-gb7718454f937 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1982 state:D stack:26480 pid:16146 tgid:16146 ppid:14759 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
hugetlb_wp+0x1e16/0x2980 mm/hugetlb.c:6027
hugetlb_fault+0x1f64/0x27f0 mm/hugetlb.c:6579
handle_mm_fault+0x956/0xa60 mm/memory.c:5847
do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f8d04051529
RSP: 002b:00007ffda85b9ea0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffffff7fffff
RDX: bceea18d3c23fc22 RSI: 0000000020800000 RDI: 00005555659b53c8
RBP: 00007f8d04337a80 R08: 00007f8d04000000 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000003 R12: 00000000001d459e
R13: 00007ffda85b9fa0 R14: 0000000000000032 R15: fffffffffffffffe
INFO: task syz.0.1982:16148 blocked for more than 145 seconds.
Not tainted 6.11.0-rc7-syzkaller-00135-gb7718454f937 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1982 state:D stack:28352 pid:16148 tgid:16146 ppid:14759 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
io_schedule+0xbf/0x130 kernel/sched/core.c:7401
folio_wait_bit_common+0x3d8/0x9b0 mm/filemap.c:1307
__folio_lock mm/filemap.c:1645 [inline]
folio_lock include/linux/pagemap.h:1050 [inline]
folio_lock include/linux/pagemap.h:1046 [inline]
__filemap_get_folio+0x6ab/0xae0 mm/filemap.c:1898
filemap_lock_folio include/linux/pagemap.h:690 [inline]
filemap_lock_hugetlb_folio include/linux/hugetlb.h:795 [inline]
hugetlb_fault+0x1605/0x27f0 mm/hugetlb.c:6531
handle_mm_fault+0x956/0xa60 mm/memory.c:5847
do_user_addr_fault+0x7a3/0x13f0 arch/x86/mm/fault.c:1389
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:rep_movs_alternative+0x33/0x70 arch/x86/lib/copy_user_64.S:58
Code: 40 83 f9 08 73 21 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 48 8b 06 <48> 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb
RSP: 0018:ffffc90003897c48 EFLAGS: 00050246
RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000000008
RDX: fffff52000712f98 RSI: ffffc90003897cb8 RDI: 000000002001ed50
RBP: 000000002001ed50 R08: 0000000000000000 R09: fffff52000712f97
R10: ffffc90003897cbf R11: 0000000000000000 R12: ffffc90003897cb8
R13: 000000002001ed58 R14: 0000000000000000 R15: 0000000020019680
copy_user_generic arch/x86/include/asm/uaccess_64.h:110 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:131 [inline]
_inline_copy_to_user include/linux/uaccess.h:181 [inline]
_copy_to_user+0xac/0xc0 lib/usercopy.c:26
copy_to_user include/linux/uaccess.h:209 [inline]
msr_read+0x155/0x250 arch/x86/kernel/msr.c:69
vfs_read+0x1d4/0xbd0 fs/read_write.c:474
ksys_read+0x12f/0x260 fs/read_write.c:619
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8d0417def9
RSP: 002b:00007f8d04f72038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f8d04335f80 RCX: 00007f8d0417def9
RDX: 0000000000018ff8 RSI: 0000000020019680 RDI: 0000000000000004
RBP: 00007f8d041f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8d04335f80 R15: 00007ffda85b9d38
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8ddb9fe0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8ddb9fe0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8ddb9fe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6626
2 locks held by getty/4991:
#0: ffff8880309020a0 (&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+0xfc8/0x1490 drivers/tty/n_tty.c:2211
2 locks held by syz.1.1862/15559:
#0: ffffffff8fad3d70 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8e1c36e8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0xe3/0x1b20 fs/nfsd/nfsctl.c:1956
2 locks held by syz.0.1982/16146:
#0: ffff8880265b1580 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:694 [inline]
#0: ffff8880265b1580 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x1e2/0x8f0 mm/memory.c:6015
#1: ffff888021282458 (&hugetlb_fault_mutex_table[i]){+.+.}-{3:3}, at: hugetlb_wp+0x1e16/0x2980 mm/hugetlb.c:6027
3 locks held by syz.0.1982/16148:
#0: ffff8880321cba98 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:153 [inline]
#0: ffff8880321cba98 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5895 [inline]
#0: ffff8880321cba98 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x3a9/0x6a0 mm/memory.c:5946
#1: ffff888021282458 (&hugetlb_fault_mutex_table[i]){+.+.}-{3:3}, at: hugetlb_fault+0x313/0x27f0 mm/hugetlb.c:6451
#2: ffff888033bccce8 (&resv_map->rw_sema){++++}-{3:3}, at: hugetlb_vma_lock_read mm/hugetlb.c:275 [inline]
#2: ffff888033bccce8 (&resv_map->rw_sema){++++}-{3:3}, at: hugetlb_vma_lock_read+0x105/0x140 mm/hugetlb.c:266
2 locks held by syz.2.2108/16784:
#0: ffff88807dd68b18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline]
#0: ffff88807dd68b18 (&mm->mmap_lock){++++}-{3:3}, at: process_vm_rw_single_vec mm/process_vm_access.c:105 [inline]
#0: ffff88807dd68b18 (&mm->mmap_lock){++++}-{3:3}, at: process_vm_rw_core.constprop.0+0x40d/0x9f0 mm/process_vm_access.c:216
#1: ffff888021282458 (&hugetlb_fault_mutex_table[i]){+.+.}-{3:3}, at: hugetlb_fault+0x313/0x27f0 mm/hugetlb.c:6451
6 locks held by syz-executor/16825:
#0: ffff888032e2a420 (sb_writers#11){.+.+}-{0:0}, at: ksys_write+0x12f/0x260 fs/read_write.c:643
#1: ffff88807892d488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x281/0x500 fs/kernfs/file.c:325
#2: ffffffff8de09e48 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_lock include/linux/cgroup.h:367 [inline]
#2: ffffffff8de09e48 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_kn_lock_live+0x139/0x570 kernel/cgroup/cgroup.c:1662
#3: ffffffff8dc5dd90 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_attach_lock kernel/cgroup/cgroup.c:2428 [inline]
#3: ffffffff8dc5dd90 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_procs_write_start+0x18f/0x660 kernel/cgroup/cgroup.c:2932
#4: ffffffff8de09c10 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_lock kernel/cgroup/cgroup.c:2430 [inline]
#4: ffffffff8de09c10 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_lock kernel/cgroup/cgroup.c:2426 [inline]
#4: ffffffff8de09c10 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_procs_write_start+0x19b/0x660 kernel/cgroup/cgroup.c:2932
#5: ffffffff8ddc5778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:328
3 locks held by syz.4.2145/16988:
#0: ffffffff8fa20290 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d6/0x700 net/core/net_namespace.c:504
#1: ffffffff8fa35ca8 (rtnl_mutex){+.+.}-{3:3}, at: setup_net+0x621/0xb40 net/core/net_namespace.c:365
#2: ffffffff8ddc5778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:296
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller-00135-gb7718454f937 #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+0x116/0x1f0 lib/dump_stack.c:119
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 987 Comm: kworker/u8:5 Not tainted 6.11.0-rc7-syzkaller-00135-gb7718454f937 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:kasan_check_range+0x12/0x1a0 mm/kasan/generic.c:188
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 50 01 00 00 48 89 f8 41 54 <44> 0f b6 c2 48 01 f0 55 53 0f 82 c6 00 00 00 48 b8 ff ff ff ff ff
RSP: 0018:ffffc90004297888 EFLAGS: 00000002
RAX: ffffffff90144d98 RBX: 1ffff92000852f15 RCX: ffffffff8169d04b
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90144d98
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff90144d9f R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: ffffffff9a4b3f58 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efecab07060 CR3: 0000000078590000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
cpumask_test_cpu include/linux/cpumask.h:562 [inline]
cpu_online include/linux/cpumask.h:1105 [inline]
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0xbb/0x560 kernel/locking/lockdep.c:5730
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
__debug_check_no_obj_freed lib/debugobjects.c:979 [inline]
debug_check_no_obj_freed+0x1d0/0x600 lib/debugobjects.c:1020
slab_free_hook mm/slub.c:2223 [inline]
slab_free mm/slub.c:4477 [inline]
kmem_cache_free+0x26f/0x3a0 mm/slub.c:4552
skb_kfree_head net/core/skbuff.c:1082 [inline]
skb_kfree_head net/core/skbuff.c:1079 [inline]
skb_free_head+0x18a/0x1d0 net/core/skbuff.c:1096
skb_release_data+0x75c/0x980 net/core/skbuff.c:1123
skb_release_all net/core/skbuff.c:1188 [inline]
__kfree_skb net/core/skbuff.c:1202 [inline]
sk_skb_reason_drop+0x133/0x200 net/core/skbuff.c:1240
kfree_skb_reason include/linux/skbuff.h:1260 [inline]
kfree_skb include/linux/skbuff.h:1269 [inline]
ieee80211_iface_work+0x437/0xf00 net/mac80211/iface.c:1644
cfg80211_wiphy_work+0x445/0x760 net/wireless/core.c:440
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3393
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