INFO: task syz-executor.1:3942 blocked for more than 143 seconds.
Not tainted 6.2.0-rc1-syzkaller-00068-gbff687b3dad6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:23816 pid:3942 ppid:5104 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
rwsem_down_read_slowpath+0x5f9/0x930 kernel/locking/rwsem.c:1095
__down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
exit_mm+0xcc/0x2c0 kernel/exit.c:539
do_exit+0x5c7/0x2150 kernel/exit.c:854
do_group_exit+0x1fd/0x2b0 kernel/exit.c:1012
__do_sys_exit_group kernel/exit.c:1023 [inline]
__se_sys_exit_group kernel/exit.c:1021 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1021
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6aa108c0a9
RSP: 002b:00007fffe36d2b18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f6aa108c0a9
RDX: 00007f6aa103df5b RSI: ffffffffffffffb8 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007fffe36d2c00
</TASK>
INFO: task syz-executor.1:3943 blocked for more than 144 seconds.
Not tainted 6.2.0-rc1-syzkaller-00068-gbff687b3dad6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:21576 pid:3943 ppid:5104 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6690
__mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline]
attr_data_get_block+0x315/0x2d70 fs/ntfs3/attrib.c:919
ntfs_get_block_vbo+0x31f/0xc40 fs/ntfs3/inode.c:573
do_mpage_readpage+0x970/0x1c50 fs/mpage.c:208
mpage_read_folio+0xf7/0x1c0 fs/mpage.c:379
filemap_read_folio+0x187/0x7d0 mm/filemap.c:2426
filemap_create_folio mm/filemap.c:2555 [inline]
filemap_get_pages+0xadb/0x10d0 mm/filemap.c:2607
filemap_read+0x3cf/0xea0 mm/filemap.c:2694
call_read_iter include/linux/fs.h:2180 [inline]
generic_file_splice_read+0x1ff/0x5d0 fs/splice.c:309
do_splice_to fs/splice.c:793 [inline]
splice_direct_to_actor+0x41b/0xc00 fs/splice.c:865
do_splice_direct+0x279/0x3d0 fs/splice.c:974
do_sendfile+0x5fb/0xf80 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64+0x14f/0x1b0 fs/read_write.c:1309
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6aa108c0a9
RSP: 002b:00007f6aa1e3b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f6aa11abf80 RCX: 00007f6aa108c0a9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f6aa10e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffe36d28df R14: 00007f6aa1e3b300 R15: 0000000000022000
</TASK>
INFO: task syz-executor.1:3949 blocked for more than 146 seconds.
Not tainted 6.2.0-rc1-syzkaller-00068-gbff687b3dad6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:22056 pid:3949 ppid:5104 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6690
__mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline]
attr_data_get_block+0x315/0x2d70 fs/ntfs3/attrib.c:919
ntfs_file_mmap+0x437/0x6b0 fs/ntfs3/file.c:296
call_mmap include/linux/fs.h:2191 [inline]
mmap_region+0xfe6/0x1e20 mm/mmap.c:2621
do_mmap+0x8d9/0xf30 mm/mmap.c:1411
vm_mmap_pgoff+0x19e/0x2b0 mm/util.c:520
ksys_mmap_pgoff+0x48c/0x6d0 mm/mmap.c:1457
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6aa108c0a9
RSP: 002b:00007f6aa1e1a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f6aa11ac050 RCX: 00007f6aa108c0a9
RDX: 0000000000800006 RSI: 0000000002047ffb RDI: 0000000020001000
RBP: 00007f6aa10e7ae9 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffe36d28df R14: 00007f6aa1e1a300 R15: 0000000000022000
</TASK>
INFO: task syz-executor.1:3950 blocked for more than 146 seconds.
Not tainted 6.2.0-rc1-syzkaller-00068-gbff687b3dad6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:22760 pid:3950 ppid:5104 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
io_schedule+0x83/0x100 kernel/sched/core.c:8811
folio_wait_bit_common+0x83a/0x12a0 mm/filemap.c:1297
__folio_lock mm/filemap.c:1660 [inline]
folio_lock include/linux/pagemap.h:938 [inline]
__filemap_get_folio+0x566/0x1250 mm/filemap.c:1932
truncate_inode_pages_range+0x594/0x1690 mm/truncate.c:377
truncate_inode_pages mm/truncate.c:448 [inline]
truncate_pagecache mm/truncate.c:743 [inline]
truncate_setsize+0xcb/0xf0 mm/truncate.c:768
ntfs_truncate fs/ntfs3/file.c:395 [inline]
ntfs3_setattr+0x5a5/0xca0 fs/ntfs3/file.c:696
notify_change+0xe50/0x1100 fs/attr.c:482
do_truncate+0x200/0x2f0 fs/open.c:65
handle_truncate fs/namei.c:3216 [inline]
do_open fs/namei.c:3561 [inline]
path_openat+0x272b/0x2dd0 fs/namei.c:3714
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_open fs/open.c:1334 [inline]
__se_sys_open fs/open.c:1330 [inline]
__x64_sys_open+0x221/0x270 fs/open.c:1330
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6aa108c0a9
RSP: 002b:00007f6aa1df9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f6aa11ac120 RCX: 00007f6aa108c0a9
RDX: 0000000000000000 RSI: 000000000014d27e RDI: 0000000020000180
RBP: 00007f6aa10e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffe36d28df R14: 00007f6aa1df9300 R15: 0000000000022000
</TASK>
INFO: task syz-executor.1:3951 blocked for more than 147 seconds.
Not tainted 6.2.0-rc1-syzkaller-00068-gbff687b3dad6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:26360 pid:3951 ppid:5104 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
rwsem_down_read_slowpath+0x5f9/0x930 kernel/locking/rwsem.c:1095
__down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260
mmap_read_lock+0x17/0x50 include/linux/mmap_lock.h:117
do_user_addr_fault+0x4b7/0xcb0 arch/x86/mm/fault.c:1379
handle_page_fault arch/x86/mm/fault.c:1519 [inline]
exc_page_fault+0x7a/0x110 arch/x86/mm/fault.c:1575
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f6aa1031b74
RSP: 002b:00007f6aa1dd8190 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f6aa10f6cdb
RDX: 000000000010b0a3 RSI: 00000000000000a0 RDI: 00007f6aa10e68f1
RBP: 00007f6aa10e7ae9 R08: 00007fffe3758080 R09: 0000000000000010
R10: 00007fffe37580b8 R11: 000000000003f93a R12: 0000000000000000
R13: 00007fffe36d28df R14: 00007f6aa1dd8300 R15: 0000000000022000
</TASK>
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d326f50 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d327750 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d326d80 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by kworker/u4:4/75:
#0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc900015f7d00 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:2/897:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc9000555fd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
1 lock held by kworker/u4:6/2853:
2 locks held by getty/4750:
#0: ffff88814a6f3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
2 locks held by syz-executor.3/5107:
#0: ffff8880769360e0 (&type->s_umount_key#102){++++}-{3:3}, at: deactivate_super+0x96/0xd0 fs/super.c:362
#1: ffffffff8d32c3f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#1: ffffffff8d32c3f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x860 kernel/rcu/tree_exp.h:946
1 lock held by syz-executor.5/5114:
#0: ffff88807bd340e0 (&type->s_umount_key#102){++++}-{3:3}, at: deactivate_super+0x96/0xd0 fs/super.c:362
2 locks held by kworker/0:3/5117:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90004c2fd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:4/5168:
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90005257d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:5/5169:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90005267d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:6/5172:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90005287d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:7/5202:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc900052f7d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:8/5207:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90005317d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:9/5212:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc900052d7d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:10/9635:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90003b87d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:11/9636:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90003b07d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:12/9637:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90003ab7d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:13/9639:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90003cafd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:14/9788:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc9000569fd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:15/10017:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc9000610fd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
3 locks held by kworker/0:17/11837:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc9000b7d7d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
#2: ffffffff8d32c3f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#2: ffffffff8d32c3f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x384/0x860 kernel/rcu/tree_exp.h:946
2 locks held by kworker/0:18/16730:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc900036bfd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
1 lock held by syz-executor.1/3942:
#0: ffff88807f276a58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88807f276a58 (&mm->mmap_lock){++++}-{3:3}, at: exit_mm+0xcc/0x2c0 kernel/exit.c:539
3 locks held by syz-executor.1/3943:
#0: ffff88807e670460 (sb_writers#19){.+.+}-{0:0}, at: do_sendfile+0x5d6/0xf80 fs/read_write.c:1254
#1: ffff8880274dec80 (mapping.invalidate_lock#9){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline]
#1: ffff8880274dec80 (mapping.invalidate_lock#9){.+.+}-{3:3}, at: filemap_create_folio mm/filemap.c:2547 [inline]
#1: ffff8880274dec80 (mapping.invalidate_lock#9){.+.+}-{3:3}, at: filemap_get_pages+0xa30/0x10d0 mm/filemap.c:2607
#2: ffff8880274de840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline]
#2: ffff8880274de840 (&ni->ni_lock/4){+.+.}-{3:3}, at: attr_data_get_block+0x315/0x2d70 fs/ntfs3/attrib.c:919
2 locks held by syz-executor.1/3949:
#0: ffff88807f276a58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline]
#0: ffff88807f276a58 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x14d/0x2b0 mm/util.c:518
#1: ffff8880274de840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline]
#1: ffff8880274de840 (&ni->ni_lock/4){+.+.}-{3:3}, at: attr_data_get_block+0x315/0x2d70 fs/ntfs3/attrib.c:919
3 locks held by syz-executor.1/3950:
#0: ffff88807e670460 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:508
#1: ffff8880274deae0 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880274deae0 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: do_truncate+0x1ec/0x2f0 fs/open.c:63
#2: ffff8880274de840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1122 [inline]
#2: ffff8880274de840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_truncate fs/ntfs3/file.c:393 [inline]
#2: ffff8880274de840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs3_setattr+0x596/0xca0 fs/ntfs3/file.c:696
1 lock held by syz-executor.1/3951:
#0: ffff88807f276a58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock+0x17/0x50 include/linux/mmap_lock.h:117
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc1-syzkaller-00068-gbff687b3dad6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcd5/0xd20 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4425 Comm: klogd Not tainted 6.2.0-rc1-syzkaller-00068-gbff687b3dad6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:preempt_latency_start kernel/sched/core.c:5688 [inline]
RIP: 0010:preempt_count_add+0xa4/0x180 kernel/sched/core.c:5711
Code: ff 7f 39 d8 75 44 4c 8b 74 24 18 4c 89 f7 e8 13 ab 0d 00 85 c0 74 0a 45 31 f6 31 ff e8 05 ab 0d 00 65 48 8b 1c 25 40 98 03 00 <48> 81 c3 28 14 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48
RSP: 0018:ffffc9000314f320 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88807e7757c0 RCX: ffffffff8aba9100
RDX: dffffc0000000000 RSI: ffffffff81e156cd RDI: ffffffff813d1143
RBP: 1ffff92000629e84 R08: 0000000000000000 R09: ffffc9000314f4f0
R10: fffff52000629e90 R11: 1ffff92000629e8e R12: ffffc9000314f458
R13: ffffc9000314f468 R14: ffffffff813d1143 R15: dffffc0000000000
FS: 00007fb65f588800(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556832848 CR3: 000000001c35a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
unwind_next_frame+0xc3/0x24c0 arch/x86/kernel/unwind_orc.c:452
arch_stack_walk+0xb2/0xe0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x104/0x1e0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x3d/0x60 mm/kasan/common.c:52
__kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:325
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slab.h:761 [inline]
slab_alloc_node mm/slub.c:3452 [inline]
kmem_cache_alloc_node+0x1dc/0x390 mm/slub.c:3497
__alloc_skb+0xd7/0x2c0 net/core/skbuff.c:552
alloc_skb include/linux/skbuff.h:1270 [inline]
alloc_skb_with_frags+0xb4/0x780 net/core/skbuff.c:6195
sock_alloc_send_pskb+0x938/0xa70 net/core/sock.c:2741
unix_dgram_sendmsg+0x5b7/0x2130 net/unix/af_unix.c:1943
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg net/socket.c:734 [inline]
__sys_sendto+0x46e/0x5f0 net/socket.c:2117
__do_sys_sendto net/socket.c:2129 [inline]
__se_sys_sendto net/socket.c:2125 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:2125
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb65f7240ac
Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10
RSP: 002b:00007ffcda4dff58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb65f7240ac
RDX: 0000000000000089 RSI: 000055ca4b980580 RDI: 0000000000000003
RBP: 000055ca4b976910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000001 R14: 00007fb65f89f77d R15: 00007ffcda4e0068
</TASK>