INFO: task syz-executor175:5101 blocked for more than 143 seconds.
Not tainted 6.8.0-rc7-syzkaller-00250-g137e0ec05aeb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor175 state:D stack:27152 pid:5101 tgid:5101 ppid:5096 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
coredump_task_exit kernel/exit.c:439 [inline]
do_exit+0x3e7/0x2ad0 kernel/exit.c:825
do_group_exit+0xd4/0x2a0 kernel/exit.c:1020
get_signal+0x23b9/0x2790 kernel/signal.c:2893
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0x14d/0x2a0 kernel/entry/common.c:212
do_syscall_64+0xe5/0x270 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fce865c6d89
RSP: 002b:00007ffc7b7592d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 00007fce8664e70c RCX: 00007fce865c6d89
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fce8664e70c
RBP: 0000000000000fd2 R08: 0000000000000001 R09: 00007ffc00000006
R10: 00007ffc7b759300 R11: 0000000000000246 R12: 00007ffc7b759300
R13: 00000000000a5b0d R14: 00000000000a6adf R15: 00007ffc7b759320
INFO: task syz-executor175:5106 blocked for more than 143 seconds.
Not tainted 6.8.0-rc7-syzkaller-00250-g137e0ec05aeb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor175 state:D stack:27056 pid:5106 tgid:5101 ppid:5096 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
rwsem_down_read_slowpath+0x622/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:814 [inline]
dir_relax_shared include/linux/fs.h:3515 [inline]
ext4_readdir+0x15fc/0x3730 fs/ext4/dir.c:302
iterate_dir+0x292/0x9e0 fs/readdir.c:110
__do_sys_getdents64 fs/readdir.c:409 [inline]
__se_sys_getdents64 fs/readdir.c:394 [inline]
__x64_sys_getdents64+0x14f/0x2e0 fs/readdir.c:394
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fce865c6d89
RSP: 002b:00007fce86583218 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007fce8664e6c8 RCX: 00007fce865c6d89
RDX: 000000000000005b RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007fce8664e6c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fce8661b600
R13: 0030656c69662f2e R14: 006b6e696c6e2e79 R15: 00746174732e6f69
INFO: task syz-executor175:5129 blocked for more than 144 seconds.
Not tainted 6.8.0-rc7-syzkaller-00250-g137e0ec05aeb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor175 state:D stack:25424 pid:5129 tgid:5101 ppid:5096 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
coredump_task_exit kernel/exit.c:439 [inline]
do_exit+0x3e7/0x2ad0 kernel/exit.c:825
do_group_exit+0xd4/0x2a0 kernel/exit.c:1020
get_signal+0x23b9/0x2790 kernel/signal.c:2893
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0x14d/0x2a0 kernel/entry/common.c:212
do_syscall_64+0xe5/0x270 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fce865c6d89
RSP: 002b:00007fce86562218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fce8664e6d8 RCX: 00007fce865c6d89
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fce8664e6d8
RBP: 00007fce8664e6d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fce8661b600
R13: 0030656c69662f2e R14: 006b6e696c6e2e79 R15: 00746174732e6f69
INFO: task syz-executor175:5132 blocked for more than 145 seconds.
Not tainted 6.8.0-rc7-syzkaller-00250-g137e0ec05aeb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor175 state:D stack:23552 pid:5132 tgid:5101 ppid:5096 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
coredump_task_exit kernel/exit.c:439 [inline]
do_exit+0x3e7/0x2ad0 kernel/exit.c:825
do_group_exit+0xd4/0x2a0 kernel/exit.c:1020
get_signal+0x23b9/0x2790 kernel/signal.c:2893
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0x14d/0x2a0 kernel/entry/common.c:212
do_syscall_64+0xe5/0x270 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fce865c6d89
RSP: 002b:00007fce86541218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fce8664e6e8 RCX: 00007fce865c6d89
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fce8664e6e8
RBP: 00007fce8664e6e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fce8661b600
R13: 0030656c69662f2e R14: 006b6e696c6e2e79 R15: 00746174732e6f69
INFO: task syz-executor175:5141 blocked for more than 145 seconds.
Not tainted 6.8.0-rc7-syzkaller-00250-g137e0ec05aeb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor175 state:D stack:27152 pid:5141 tgid:5101 ppid:5096 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
schedule_timeout+0x25b/0x2a0 kernel/time/timer.c:2159
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e4/0x600 kernel/sched/completion.c:116
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
coredump_wait fs/coredump.c:414 [inline]
do_coredump+0x90c/0x3f80 fs/coredump.c:571
get_signal+0x2433/0x2790 kernel/signal.c:2879
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
irqentry_exit_to_user_mode+0x13c/0x280 kernel/entry/common.c:225
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7fce865c0dde
RSP: 002b:00007fce864ff038 EFLAGS: 00010287
RAX: 00007fce864ff0d0 RBX: 0000000020000040 RCX: 0000000000000000
RDX: 00000000000000e0 RSI: 0000000000000000 RDI: 00007fce864ff0d0
RBP: 0000000000000000 R08: 00000000000000e0 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000020000100
R13: 00007fce864ff0d0 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor175:5937 blocked for more than 146 seconds.
Not tainted 6.8.0-rc7-syzkaller-00250-g137e0ec05aeb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor175 state:D stack:27360 pid:5937 tgid:5933 ppid:5099 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
rwsem_down_read_slowpath+0x622/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:814 [inline]
dir_relax_shared include/linux/fs.h:3515 [inline]
ext4_readdir+0x15fc/0x3730 fs/ext4/dir.c:302
iterate_dir+0x292/0x9e0 fs/readdir.c:110
__do_sys_getdents64 fs/readdir.c:409 [inline]
__se_sys_getdents64 fs/readdir.c:394 [inline]
__x64_sys_getdents64+0x14f/0x2e0 fs/readdir.c:394
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fce865c6d89
RSP: 002b:00007fce86583218 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007fce8664e6c8 RCX: 00007fce865c6d89
RDX: 000000000000005b RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007fce8664e6c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fce8661b600
R13: 0030656c69662f2e R14: 006b6e696c6e2e79 R15: 00746174732e6f69
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d7ad220 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d7ad220 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d7ad220 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by getty/4814:
#0: ffff88802a22c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfca/0x1490 drivers/tty/n_tty.c:2201
2 locks held by syz-executor175/5106:
#0: ffff8880217e6d48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xeb/0x180 fs/file.c:1191
#1: ffff88807953e800 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#1: ffff88807953e800 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: dir_relax_shared include/linux/fs.h:3515 [inline]
#1: ffff88807953e800 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: ext4_readdir+0x15fc/0x3730 fs/ext4/dir.c:302
6 locks held by syz-executor175/5137:
2 locks held by syz-executor175/5937:
#0: ffff8880232045c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xeb/0x180 fs/file.c:1191
#1: ffff8880797ce800 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#1: ffff8880797ce800 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: dir_relax_shared include/linux/fs.h:3515 [inline]
#1: ffff8880797ce800 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: ext4_readdir+0x15fc/0x3730 fs/ext4/dir.c:302
7 locks held by syz-executor175/5960:
2 locks held by syz-executor175/7352:
#0: ffff88802bd61c48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xeb/0x180 fs/file.c:1191
#1: ffff8880794aa200 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#1: ffff8880794aa200 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: dir_relax_shared include/linux/fs.h:3515 [inline]
#1: ffff8880794aa200 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: ext4_readdir+0x15fc/0x3730 fs/ext4/dir.c:302
6 locks held by syz-executor175/7368:
2 locks held by syz-executor175/7778:
#0: ffff88802d3440c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xeb/0x180 fs/file.c:1191
#1: ffff888079534000 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#1: ffff888079534000 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: dir_relax_shared include/linux/fs.h:3515 [inline]
#1: ffff888079534000 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: ext4_readdir+0x15fc/0x3730 fs/ext4/dir.c:302
6 locks held by syz-executor175/7788:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc7-syzkaller-00250-g137e0ec05aeb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5960 Comm: syz-executor175 Not tainted 6.8.0-rc7-syzkaller-00250-g137e0ec05aeb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:unwind_get_return_address+0xa7/0xe0 arch/x86/kernel/unwind_orc.c:369
Code: ff 89 c5 89 c6 e8 a9 fa 4e 00 85 ed 74 b5 e8 c0 ff 4e 00 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 2c <48> 8b 5b 48 e8 a0 ff 4e 00 48 89 d8 5b 5d 41 5c c3 cc cc cc cc 48
RSP: 0018:ffffc9000a8cef78 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc9000a8cefa0 RCX: ffffffff813c5f17
RDX: 1ffff92001519dfd RSI: ffffffff813c5f20 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000006 R12: ffffc9000a8cefe8
R13: ffffffff81782e10 R14: ffffc9000a8cf060 R15: ffff8880779bd940
FS: 00007fce864ff6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007d6e0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0xc1/0x170 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:589
poison_slab_object mm/kasan/common.c:240 [inline]
__kasan_slab_free+0x11d/0x1a0 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2121 [inline]
slab_free mm/slub.c:4299 [inline]
kfree+0x124/0x370 mm/slub.c:4409
qtree_write_dquot+0x30a/0x580 fs/quota/quota_tree.c:441
v2_write_dquot+0x1da/0x260 fs/quota/quota_v2.c:358
dquot_commit+0x370/0x5a0 fs/quota/dquot.c:512
ext4_write_dquot+0x259/0x320 fs/ext4/super.c:6866
ext4_mark_dquot_dirty fs/ext4/super.c:6914 [inline]
ext4_mark_dquot_dirty+0x113/0x1b0 fs/ext4/super.c:6908
mark_dquot_dirty fs/quota/dquot.c:372 [inline]
mark_all_dquot_dirty fs/quota/dquot.c:410 [inline]
__dquot_alloc_space+0x3c6/0xb70 fs/quota/dquot.c:1734
dquot_alloc_space_nodirty include/linux/quotaops.h:299 [inline]
dquot_alloc_space include/linux/quotaops.h:312 [inline]
dquot_alloc_block include/linux/quotaops.h:336 [inline]
ext4_xattr_block_set+0x16d9/0x3180 fs/ext4/xattr.c:2078
ext4_xattr_set_handle+0xd74/0x1420 fs/ext4/xattr.c:2456
ext4_initxattrs+0xbc/0x120 fs/ext4/xattr_security.c:44
security_inode_init_security+0x2e2/0x3c0 security/security.c:1753
__ext4_new_inode+0x42d4/0x5200 fs/ext4/ialloc.c:1326
ext4_mkdir+0x284/0xb70 fs/ext4/namei.c:3014
vfs_mkdir+0x580/0x830 fs/namei.c:4126
do_mkdirat+0x301/0x3a0 fs/namei.c:4149
__do_sys_mkdir fs/namei.c:4169 [inline]
__se_sys_mkdir fs/namei.c:4167 [inline]
__x64_sys_mkdir+0xf2/0x140 fs/namei.c:4167
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fce865c5c47
Code: 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 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:00007fce864ff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 0000000020000040 RCX: 00007fce865c5c47
RDX: 0000000000000080 RSI: 00000000000001ff RDI: 0000000020000100
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000020000100
R13: 00007fce864ff0d0 R14: 0000000000000000 R15: 0000000000000000
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 3.192 msecs