INFO: task syz-executor.0:7978 blocked for more than 143 seconds.
Not tainted 6.7.0-rc8-syzkaller-00159-ga4ab2706bb12 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:25808 pid:7978 tgid:7973 ppid:7749 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: 0033:0x7fe0f9a7cd29
RSP: 002b:00007fe0fa75a0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007fe0f9babf80 RCX: 00007fe0f9a7cd29
RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffff80000801
RBP: 00007fe0f9ac947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000140 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fe0f9babf80 R15: 00007ffea7d19dc8
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
3 locks held by kworker/u4:7/2798:
2 locks held by getty/4821:
#0: ffff88814a7e10a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
5 locks held by syz-executor.0/7591:
#0: ffff88803a87e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88803a87e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88803a87e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: mount_bdev+0x1eb/0x300 fs/super.c:1648
#1: ffffc900031f10f0 (&journal->j_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:813 [inline]
#1: ffffc900031f10f0 (&journal->j_mutex){+.+.}-{3:3}, at: lock_journal fs/reiserfs/journal.c:533 [inline]
#1: ffffc900031f10f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_end+0x399/0x4b40 fs/reiserfs/journal.c:4026
#2: ffffc900031f1180 (&journal->j_flush_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:813 [inline]
#2: ffffc900031f1180 (&journal->j_flush_mutex){+.+.}-{3:3}, at: flush_journal_list+0x18d/0x1c80 fs/reiserfs/journal.c:1368
#3: ffff88801d4fc090 (&jl->j_commit_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:813 [inline]
#3: ffff88801d4fc090 (&jl->j_commit_mutex){+.+.}-{3:3}, at: flush_commit_list+0x66a/0x1c50 fs/reiserfs/journal.c:1006
#4: ffff8880b983c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
1 lock held by syz-executor.0/7978:
#0: ffff88803a87e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88803a87e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
1 lock held by syz-executor.0/8145:
#0: ffff88803a87e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88803a87e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
1 lock held by syz-executor.0/8210:
#0: ffff88803a87e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88803a87e0e0 (&type->s_umount_key#24){++++}-{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-rc8-syzkaller-00159-ga4ab2706bb12 #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: 7591 Comm: syz-executor.0 Not tainted 6.7.0-rc8-syzkaller-00159-ga4ab2706bb12 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:80 [inline]
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:102 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
RIP: 0010:unwind_next_frame+0x507/0x29e0 arch/x86/kernel/unwind_orc.c:494
Code: e8 3f 48 01 c8 48 83 e0 fe 49 8d 5c 45 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 34 48 63 2b <48> 01 dd 48 89 ef 4c 89 f6 e8 cb b8 50 00 48 8d 43 04 4c 39 f5 4c
RSP: 0018:ffffc90016caea48 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8f79335c RCX: dffffc0000000000
RDX: ffffc9000c0c6000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: fffffffffbc6cd5c R08: ffffffff813dc335 R09: ffffc90016caec10
R10: 0000000000000003 R11: ffff88801a6f8000 R12: ffffffff8f79337c
R13: ffffffff8f793340 R14: ffffffff8b40008a R15: ffffffff8f793340
FS: 00007fbd455bc6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555a01938 CR3: 00000000631dc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x146/0x1a0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
__kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x6c/0x3c0 mm/slab.h:763
slab_alloc_node mm/slub.c:3478 [inline]
slab_alloc mm/slub.c:3486 [inline]
__kmem_cache_alloc_lru mm/slub.c:3493 [inline]
kmem_cache_alloc+0x19e/0x2b0 mm/slub.c:3502
mempool_alloc+0x194/0x590 mm/mempool.c:398
bio_alloc_bioset+0x26b/0x1400 block/bio.c:543
bio_alloc include/linux/bio.h:432 [inline]
submit_bh_wbc+0x27b/0x540 fs/buffer.c:2802
flush_journal_list+0x946/0x1c80 fs/reiserfs/journal.c:1496
flush_used_journal_lists+0x1256/0x15d0 fs/reiserfs/journal.c:1828
do_journal_end+0x3d51/0x4b40
do_journal_begin_r+0x970/0x1030
journal_begin+0x14c/0x360 fs/reiserfs/journal.c:3254
reiserfs_fill_super+0x1853/0x2620 fs/reiserfs/super.c:2104
mount_bdev+0x237/0x300 fs/super.c:1650
legacy_get_tree+0xef/0x190 fs/fs_context.c:662
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: 0033:0x7fbd46a7e42a
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:00007fbd455bbee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fbd455bbf80 RCX: 00007fbd46a7e42a
RDX: 0000000020000080 RSI: 0000000020000040 RDI: 00007fbd455bbf40
RBP: 0000000020000080 R08: 00007fbd455bbf80 R09: 0000000003214048
R10: 0000000003214048 R11: 0000000000000202 R12: 0000000020000040
R13: 00007fbd455bbf40 R14: 000000000000112a R15: 00000000200000c0