INFO: task syz.0.351:7625 blocked for more than 143 seconds.
Not tainted 6.11.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.351 state:D stack:27872 pid:7625 tgid:7616 ppid:5419 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 include/linux/pagemap.h:1050 [inline]
truncate_inode_pages_range+0xb93/0xe80 mm/truncate.c:396
kill_bdev block/bdev.c:90 [inline]
set_blocksize+0x2b2/0x370 block/bdev.c:172
sb_set_blocksize+0x47/0x120 block/bdev.c:181
efs_fill_super+0x118/0xc60 fs/efs/super.c:265
get_tree_bdev+0x36f/0x610 fs/super.c:1635
vfs_get_tree+0x8f/0x380 fs/super.c:1800
do_new_mount fs/namespace.c:3472 [inline]
path_mount+0x14e6/0x1f20 fs/namespace.c:3799
do_mount fs/namespace.c:3812 [inline]
__do_sys_mount fs/namespace.c:4020 [inline]
__se_sys_mount fs/namespace.c:3997 [inline]
__x64_sys_mount+0x294/0x320 fs/namespace.c:3997
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: 0033:0x7fe36ed79e79
RSP: 002b:00007fe36fb3b038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe36ef16130 RCX: 00007fe36ed79e79
RDX: 00000000200001c0 RSI: 0000000020000240 RDI: 00000000200011c0
RBP: 00007fe36ede793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe36ef16130 R15: 00007ffd32f37948
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8ddb5be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8ddb5be0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8ddb5be0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6626
2 locks held by kworker/0:2/943:
2 locks held by getty/4976:
#0: ffff88802b85e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002ef62f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2211
3 locks held by kworker/1:4/5272:
#0: ffff888015880948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc9000405fd80 (free_ipc_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffffffff8ddc1378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:328
3 locks held by kworker/u8:20/6640:
#0: ffff88802ae5a948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc90003637d80 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xcf/0x14d0 net/ipv6/addrconf.c:4194
2 locks held by syz.1.339/7544:
1 lock held by syz.0.351/7625:
#0: ffff88802bacc0e0 (&type->s_umount_key#89/1){+.+.}-{3:3}, at: alloc_super+0x23d/0xbd0 fs/super.c:344
1 lock held by syz-executor/8103:
1 lock held by syz.1.348/8240:
1 lock held by syz-executor/8320:
#0: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6644
2 locks held by syz.3.440/8477:
#0: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x213/0x10c0 net/core/dev_ioctl.c:783
#1: ffffffff8ddc1378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:296
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc5-syzkaller #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8103 Comm: syz-executor Not tainted 6.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:preempt_count_sub+0x63/0x160 kernel/sched/core.c:5692
Code: 96 13 85 c9 75 1b 65 8b 05 b2 80 a9 7e 89 c2 81 e2 ff ff ff 7f 39 d3 7f 17 81 fb fe 00 00 00 76 71 f7 db 65 01 1d 95 80 a9 7e <5b> c3 cc cc cc cc 90 e8 91 93 25 03 85 c0 74 51 48 c7 c0 f4 29 13
RSP: 0018:ffffc90003a676b0 EFLAGS: 00000297
RAX: 0000000080000001 RBX: 00000000ffffffff RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff813cf0e5 RDI: 0000000000000001
RBP: ffffc90003a67a50 R08: 0000000000000006 R09: ffffc90003a679f0
R10: ffffc90003a67a50 R11: 0000000000000000 R12: ffffc90003a60000
R13: ffffc90003a68000 R14: ffffc90003a67a58 R15: ffffc90003a679f0
FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563b3bbfc5f0 CR3: 000000000db7c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_next_frame+0x11ef/0x23a0 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
save_stack+0x162/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x8d/0x400 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1094 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2612
vfree+0x181/0x7a0 mm/vmalloc.c:3364
kcov_put kernel/kcov.c:438 [inline]
kcov_put+0x2a/0x40 kernel/kcov.c:434
kcov_close+0x10/0x20 kernel/kcov.c:534
__fput+0x408/0xbb0 fs/file_table.c:422
task_work_run+0x14e/0x250 kernel/task_work.c:228
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xaa3/0x2bb0 kernel/exit.c:882
do_group_exit+0xd3/0x2a0 kernel/exit.c:1031
get_signal+0x25fd/0x2770 kernel/signal.c:2917
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
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: 0033:0x7fd4605abf65
Code: Unable to access opcode bytes at 0x7fd4605abf3b.
RSP: 002b:00007ffd766ac620 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 0000000000000020 RCX: 00007fd4605abf65
RDX: 00007ffd766ac660 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffd766ac6bc R08: 0000000000000000 R09: 00007fd4613f3080
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 0000000000096348 R14: 0000000000095bca R15: 00007ffd766ac710