INFO: task syz-executor.1:15977 blocked for more than 143 seconds.
Not tainted 6.7.0-rc7-syzkaller-00027-g505e701c0b2c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:26392 pid:15977 tgid:15976 ppid:15340 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x703/0xa40 kernel/locking/rwsem.c:1528
__super_lock fs/super.c:58 [inline]
super_lock+0x176/0x3a0 fs/super.c:117
user_get_super+0xd5/0x180 fs/super.c:1062
quotactl_block fs/quota/quota.c:890 [inline]
__do_sys_quotactl fs/quota/quota.c:955 [inline]
__se_sys_quotactl+0x523/0xa30 fs/quota/quota.c:917
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f9dd4e7cce9
RSP: 002b:00007f9dd5bc60c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f9dd4f9bf80 RCX: 00007f9dd4e7cce9
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: ffffffff80000802
RBP: 00007f9dd4ec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000380 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9dd4f9bf80 R15: 00007ffed3f54a58
INFO: task syz-executor.1:15980 blocked for more than 143 seconds.
Not tainted 6.7.0-rc7-syzkaller-00027-g505e701c0b2c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27600 pid:15980 tgid:15976 ppid:15340 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x703/0xa40 kernel/locking/rwsem.c:1528
__super_lock fs/super.c:58 [inline]
super_lock+0x176/0x3a0 fs/super.c:117
user_get_super+0xd5/0x180 fs/super.c:1062
quotactl_block fs/quota/quota.c:890 [inline]
__do_sys_quotactl fs/quota/quota.c:955 [inline]
__se_sys_quotactl+0x523/0xa30 fs/quota/quota.c:917
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f9dd4e7cce9
RSP: 002b:00007f9dd5ba50c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f9dd4f9c050 RCX: 00007f9dd4e7cce9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: ffffffff80000902
RBP: 00007f9dd4ec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f9dd4f9c050 R15: 00007ffed3f54a58
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u4:6/2455:
#0: ffff8880b983c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffff8880b9828808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
2 locks held by getty/4811:
#0: ffff88802af4a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015d72f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.1/15215:
1 lock held by syz-executor.1/15977:
#0: ffff88807d31e0e0 (&type->s_umount_key#104){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807d31e0e0 (&type->s_umount_key#104){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
1 lock held by syz-executor.1/15980:
#0: ffff88807d31e0e0 (&type->s_umount_key#104){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807d31e0e0 (&type->s_umount_key#104){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
1 lock held by syz-executor.1/16099:
#0: ffff88807d31e0e0 (&type->s_umount_key#104){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807d31e0e0 (&type->s_umount_key#104){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
1 lock held by syz-executor.1/16100:
#0: ffff88807d31e0e0 (&type->s_umount_key#104){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807d31e0e0 (&type->s_umount_key#104){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
1 lock held by syz-executor.1/16173:
#0: ffff88807d31e0e0 (&type->s_umount_key#104){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807d31e0e0 (&type->s_umount_key#104){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
1 lock held by syz-executor.1/16174:
#0: ffff88807d31e0e0 (&type->s_umount_key#104){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807d31e0e0 (&type->s_umount_key#104){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc7-syzkaller-00027-g505e701c0b2c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15215 Comm: syz-executor.1 Not tainted 6.7.0-rc7-syzkaller-00027-g505e701c0b2c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:kasan_check_range+0x5/0x290 mm/kasan/generic.c:186
Code: 01 0f 84 47 ff ff ff 48 ff c8 48 39 d8 0f 84 3b ff ff ff 48 89 df 48 c7 c6 76 8d 12 8d e8 83 0a e7 ff 90 0f 0b 66 0f 1f 00 55 <41> 57 41 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37
RSP: 0018:ffffc9001572f580 EFLAGS: 00000046
RAX: 0000000000000002 RBX: 00000000000000ac RCX: ffffffff816d3db4
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90dd7370
RBP: c2babd70e8ede3c3 R08: ffffffff90dd74b7 R09: 1ffffffff21bae96
R10: dffffc0000000000 R11: fffffbfff21bae97 R12: ffff88807ce09dc0
R13: ffff88807ce09dc0 R14: 0000000000000000 R15: ffff88807ce09dc0
FS: 00007f2b769ba6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c002075c48 CR3: 00000000268aa000 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]
hlock_class kernel/locking/lockdep.c:228 [inline]
__lock_acquire+0x1264/0x1fd0 kernel/locking/lockdep.c:5134
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
fs_reclaim_acquire+0xae/0x120 mm/page_alloc.c:3710
might_alloc include/linux/sched/mm.h:303 [inline]
bdev_getblk+0x46/0x6d0 fs/buffer.c:1425
__bread_gfp+0xac/0x420 fs/buffer.c:1474
sb_bread include/linux/buffer_head.h:324 [inline]
__exfat_ent_get fs/exfat/fatent.c:48 [inline]
exfat_ent_get+0x14d/0x400 fs/exfat/fatent.c:97
exfat_create_upcase_table+0x39f/0xfa0 fs/exfat/nls.c:795
__exfat_fill_super fs/exfat/super.c:594 [inline]
exfat_fill_super+0x119e/0x2a00 fs/exfat/super.c:646
get_tree_bdev+0x416/0x5b0 fs/super.c:1598
vfs_get_tree+0x8c/0x2a0 fs/super.c:1771
do_new_mount+0x28f/0xae0 fs/namespace.c:3337
do_mount fs/namespace.c:3677 [inline]
__do_sys_mount fs/namespace.c:3886 [inline]
__se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3863
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f2b75c7e3ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2b769b9ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f2b769b9f80 RCX: 00007f2b75c7e3ea
RDX: 0000000020001500 RSI: 0000000020000140 RDI: 00007f2b769b9f40
RBP: 0000000020001500 R08: 00007f2b769b9f80 R09: 0000000000000800
R10: 0000000000000800 R11: 0000000000000202 R12: 0000000020000140
R13: 00007f2b769b9f40 R14: 00000000000014fe R15: 0000000020004800