INFO: task kworker/u4:11:15987 blocked for more than 143 seconds.
Not tainted 6.2.0-rc4-syzkaller-00350-gedc00350d205 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:11 state:D stack:17312 pid:15987 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:4)
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
queue_log_writer+0x215/0x300 fs/reiserfs/journal.c:2980
check_journal_end fs/reiserfs/journal.c:3676 [inline]
do_journal_end+0xa38/0x4a30 fs/reiserfs/journal.c:4042
reiserfs_write_inode+0x1f8/0x2a0 fs/reiserfs/inode.c:1779
write_inode fs/fs-writeback.c:1451 [inline]
__writeback_single_inode+0x4d6/0x670 fs/fs-writeback.c:1663
writeback_sb_inodes+0x812/0x1050 fs/fs-writeback.c:1889
wb_writeback+0x41f/0x7b0 fs/fs-writeback.c:2063
wb_do_writeback fs/fs-writeback.c:2206 [inline]
wb_workfn+0x3cb/0xef0 fs/fs-writeback.c:2246
process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task syz-executor.4:24006 blocked for more than 143 seconds.
Not tainted 6.2.0-rc4-syzkaller-00350-gedc00350d205 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:18936 pid:24006 ppid:5116 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
bit_wait+0xe/0xc0 kernel/sched/wait_bit.c:199
__wait_on_bit+0xb5/0x170 kernel/sched/wait_bit.c:49
__inode_wait_for_writeback fs/fs-writeback.c:1472 [inline]
inode_wait_for_writeback+0x211/0x2c0 fs/fs-writeback.c:1484
evict+0x277/0x620 fs/inode.c:661
xattr_unlink fs/reiserfs/xattr.c:96 [inline]
lookup_and_delete_xattr fs/reiserfs/xattr.c:494 [inline]
reiserfs_xattr_set_handle+0xae5/0xec0 fs/reiserfs/xattr.c:529
reiserfs_xattr_set+0x417/0x530 fs/reiserfs/xattr.c:633
__vfs_removexattr+0x44a/0x480 fs/xattr.c:497
__vfs_removexattr_locked+0x1fe/0x400 fs/xattr.c:532
vfs_removexattr+0x104/0x2b0 fs/xattr.c:554
ovl_do_removexattr fs/overlayfs/overlayfs.h:272 [inline]
ovl_removexattr fs/overlayfs/overlayfs.h:280 [inline]
ovl_make_workdir+0x5b9/0xdf0 fs/overlayfs/super.c:1361
ovl_get_workdir+0x2e4/0x410 fs/overlayfs/super.c:1444
ovl_fill_super+0x19d7/0x2790 fs/overlayfs/super.c:2000
mount_nodev+0x52/0xe0 fs/super.c:1405
legacy_get_tree+0xea/0x180 fs/fs_context.c:610
vfs_get_tree+0x88/0x270 fs/super.c:1489
do_new_mount+0x289/0xad0 fs/namespace.c:3145
do_mount fs/namespace.c:3488 [inline]
__do_sys_mount fs/namespace.c:3697 [inline]
__se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674
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: 0033:0x7fdeec48c0c9
RSP: 002b:00007fdeed0fc168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fdeec5abf80 RCX: 00007fdeec48c0c9
RDX: 0000000020000080 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 00007fdeec4e7ae9 R08: 0000000020000480 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe17238cdf R14: 00007fdeed0fc300 R15: 0000000000022000
</TASK>
INFO: task syz-executor.4:24026 blocked for more than 144 seconds.
Not tainted 6.2.0-rc4-syzkaller-00350-gedc00350d205 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:22552 pid:24026 ppid:5116 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
wb_wait_for_completion+0x155/0x280 fs/fs-writeback.c:192
sync_inodes_sb+0x283/0xaa0 fs/fs-writeback.c:2725
sync_filesystem+0x16b/0x220 fs/sync.c:64
reiserfs_remount+0x1a9/0x19d0 fs/reiserfs/super.c:1445
reconfigure_super+0x3bc/0x7b0 fs/super.c:935
do_remount fs/namespace.c:2807 [inline]
path_mount+0xd20/0x10c0 fs/namespace.c:3467
do_mount fs/namespace.c:3488 [inline]
__do_sys_mount fs/namespace.c:3697 [inline]
__se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674
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: 0033:0x7fdeec48d5fa
RSP: 002b:00007fdee2ffdf88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdeec48d5fa
RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 0000000000000000
RBP: 00007fdee2ffe020 R08: 00007fdee2ffe020 R09: 0000000001a484bc
R10: 0000000001a484bc R11: 0000000000000206 R12: 00000000200000c0
R13: 0000000020000100 R14: 00007fdee2ffdfe0 R15: 00000000200007c0
</TASK>
INFO: task syz-executor.5:24021 blocked for more than 144 seconds.
Not tainted 6.2.0-rc4-syzkaller-00350-gedc00350d205 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:23240 pid:24021 ppid:5112 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
rwsem_down_read_slowpath+0x5f9/0x930 kernel/locking/rwsem.c:1095
__down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260
iterate_supers+0xb0/0x1f0 fs/super.c:722
ksys_sync+0xd5/0x1c0 fs/sync.c:104
__do_sys_sync+0xa/0x10 fs/sync.c:113
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: 0033:0x7f185a68c0c9
RSP: 002b:00007f185b323168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f185a7ac050 RCX: 00007f185a68c0c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f185a6e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff116d801f R14: 00007f185b323300 R15: 0000000000022000
</TASK>
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d326fd0 (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: ffffffff8d3277d0 (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: ffffffff8d326e00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4762:
#0: ffff88814a44c098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
2 locks held by kworker/1:4/5168:
#0: ffff8880b993a1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537
#1: ffff8880b9927748 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x611/0x9a0 kernel/sched/psi.c:976
2 locks held by kworker/u4:11/15987:
#0: ffff888017c53138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc9000bf6fd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
4 locks held by syz-executor.4/24006:
#0: ffff88801cf440e0 (&type->s_umount_key#85/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920 fs/super.c:228
#1: ffff88802c6d6460 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:508
#2: ffff8880724abe80 (&type->i_mutex_dir_key#13){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#2: ffff8880724abe80 (&type->i_mutex_dir_key#13){++++}-{3:3}, at: vfs_removexattr+0xed/0x2b0 fs/xattr.c:553
#3: ffff8880724ab7e0 (&type->i_mutex_dir_key#13/3){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline]
#3: ffff8880724ab7e0 (&type->i_mutex_dir_key#13/3){+.+.}-{3:3}, at: lookup_and_delete_xattr fs/reiserfs/xattr.c:486 [inline]
#3: ffff8880724ab7e0 (&type->i_mutex_dir_key#13/3){+.+.}-{3:3}, at: reiserfs_xattr_set_handle+0x521/0xec0 fs/reiserfs/xattr.c:529
2 locks held by syz-executor.4/24026:
#0: ffff88802c6d60e0 (&type->s_umount_key#89){++++}-{3:3}, at: do_remount fs/namespace.c:2804 [inline]
#0: ffff88802c6d60e0 (&type->s_umount_key#89){++++}-{3:3}, at: path_mount+0xcd8/0x10c0 fs/namespace.c:3467
#1: ffff88801e64e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88801e64e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x264/0xaa0 fs/fs-writeback.c:2723
1 lock held by syz-executor.5/24021:
#0: ffff88801cf440e0 (&type->s_umount_key#86){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
1 lock held by syz-executor.5/24116:
#0: ffff88802c6d60e0 (&type->s_umount_key#89){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
1 lock held by syz-executor.5/24119:
#0: ffff88802c6d60e0 (&type->s_umount_key#89){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
1 lock held by syz-executor.2/24245:
#0: ffff88802c6d60e0 (&type->s_umount_key#89){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
1 lock held by syz-executor.2/24251:
#0: ffff88802c6d60e0 (&type->s_umount_key#89){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
1 lock held by syz-executor.2/24255:
#0: ffff88802c6d60e0 (&type->s_umount_key#89){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
1 lock held by syz-executor.2/24260:
#0: ffff88802c6d60e0 (&type->s_umount_key#89){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
1 lock held by syz-executor.2/24264:
#0: ffff88802c6d60e0 (&type->s_umount_key#89){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
1 lock held by syz-executor.2/24266:
#0: ffff88802c6d60e0 (&type->s_umount_key#89){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
1 lock held by syz-executor.2/24268:
#0: ffff88802c6d60e0 (&type->s_umount_key#89){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
1 lock held by syz-executor.2/24275:
#0: ffff88802c6d60e0 (&type->s_umount_key#89){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc4-syzkaller-00350-gedc00350d205 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
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: 4423 Comm: klogd Not tainted 6.2.0-rc4-syzkaller-00350-gedc00350d205 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:jhash2 include/linux/jhash.h:129 [inline]
RIP: 0010:hash_stack lib/stackdepot.c:276 [inline]
RIP: 0010:__stack_depot_save+0xb4/0x4a0 lib/stackdepot.c:444
Code: fb c1 c3 06 31 eb 44 01 ef 41 29 dd 89 d9 c1 c1 08 44 31 e9 01 fb 89 c8 c1 c0 10 29 cf 31 f8 01 d9 29 c3 89 c5 c1 c5 13 31 dd <01> c8 29 e9 41 89 ed 41 c1 c5 04 41 31 cd 01 c5 83 c6 fd 48 83 c2
RSP: 0018:ffffc9000318f3d8 EFLAGS: 00000282
RAX: 000000000770306f RBX: 000000001addfa51 RCX: 000000003b11845e
RDX: ffffc9000318f4a4 RSI: 0000000000000017 RDI: 000000005eee28ac
RBP: 0000000099a5c1d0 R08: 0000000000000010 R09: 0000000000000001
R10: fffff52000631e68 R11: 1ffff92000631e66 R12: 0000000000002800
R13: 00000000846b2f34 R14: 0000000000000000 R15: ffffc9000318f480
FS: 00007f38fbb75800(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1fe26d34e0 CR3: 0000000029756000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
save_stack+0xf3/0x1e0 mm/page_owner.c:128
__reset_page_owner+0x52/0x1a0 mm/page_owner.c:148
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1446 [inline]
free_pcp_prepare+0x751/0x780 mm/page_alloc.c:1496
free_unref_page_prepare mm/page_alloc.c:3369 [inline]
free_unref_page+0x19/0x4c0 mm/page_alloc.c:3464
discard_slab mm/slub.c:2098 [inline]
__unfreeze_partials+0x1a5/0x1e0 mm/slub.c:2637
put_cpu_partial+0x106/0x170 mm/slub.c:2713
qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:302
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: 0033:0x7f38fbd110ac
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:00007ffcf294f488 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f38fbd110ac
RDX: 0000000000000047 RSI: 0000562ab6802760 RDI: 0000000000000003
RBP: 0000562ab67fa910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000001 R14: 00007f38fbe8c77d R15: 00007ffcf294f598
</TASK>