INFO: task syz-executor350:5058 blocked for more than 143 seconds.
Not tainted 6.8.0-rc1-syzkaller-00311-g3a5879d495b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor350 state:D stack:25872 pid:5058 tgid:5058 ppid:5056 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x4960 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874
rwsem_down_write_slowpath+0xeea/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
filemap_invalidate_lock include/linux/fs.h:847 [inline]
blkdev_fallocate+0x22a/0x570 block/fops.c:800
vfs_fallocate+0x55c/0x6c0 fs/open.c:328
ksys_fallocate fs/open.c:351 [inline]
__do_sys_fallocate fs/open.c:359 [inline]
__se_sys_fallocate fs/open.c:357 [inline]
__x64_sys_fallocate+0xbd/0x100 fs/open.c:357
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7febc11ddb29
RSP: 002b:00007ffc6ba39ad8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007febc11ddb29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 0000100001002000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc6ba39cf8 R14: 00007ffc6ba39b00 R15: 00007ffc6ba39af0
INFO: task syz-executor350:5070 blocked for more than 143 seconds.
Not tainted 6.8.0-rc1-syzkaller-00311-g3a5879d495b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor350 state:D stack:23288 pid:5070 tgid:5070 ppid:5049 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x4960 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874
rwsem_down_write_slowpath+0xeea/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
filemap_invalidate_lock include/linux/fs.h:847 [inline]
blkdev_fallocate+0x22a/0x570 block/fops.c:800
vfs_fallocate+0x55c/0x6c0 fs/open.c:328
ksys_fallocate fs/open.c:351 [inline]
__do_sys_fallocate fs/open.c:359 [inline]
__se_sys_fallocate fs/open.c:357 [inline]
__x64_sys_fallocate+0xbd/0x100 fs/open.c:357
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7febc11ddb29
RSP: 002b:00007ffc6ba39ad8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007febc11ddb29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 0000100001002000 R11: 0000000000000246 R12: 000000000000e29e
R13: 00007ffc6ba39aec R14: 00007ffc6ba39b00 R15: 00007ffc6ba39af0
Showing all locks held in the system:
2 locks held by ksoftirqd/1/22:
1 lock held by khungtaskd/29:
#0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
1 lock held by klogd/4492:
2 locks held by getty/4800:
#0: ffff888029cd00a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor350/5054:
1 lock held by syz-executor350/5058:
#0: ffff88801b54abc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b54abc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x22a/0x570 block/fops.c:800
1 lock held by syz-executor350/5070:
#0: ffff88801b54abc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b54abc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x22a/0x570 block/fops.c:800
1 lock held by syz-executor350/5071:
#0: ffff88801b54abc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b54abc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x22a/0x570 block/fops.c:800
1 lock held by syz-executor350/5078:
#0: ffff88801b54abc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b54abc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x22a/0x570 block/fops.c:800
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc1-syzkaller-00311-g3a5879d495b2 #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4492 Comm: klogd Not tainted 6.8.0-rc1-syzkaller-00311-g3a5879d495b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:__list_add_valid_or_report+0x60/0xf0 lib/list_debug.c:32
Code: 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 a4 e2 57 fd 48 8b 13 4c 39 e2 75 6b 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 <74> 08 4c 89 e7 e8 86 e2 57 fd 49 8b 14 24 4c 39 f2 75 61 4d 39 e7
RSP: 0018:ffffc90003177558 EFLAGS: 00000046
RAX: 1ffffd400047d832 RBX: ffff88801e505150 RCX: 0000000000000001
RDX: ffffea00023ec190 RSI: ffffea00023ec190 RDI: ffffea00023f5fd0
RBP: ffffea00023ec190 R08: 0000000000000003 R09: fffff5200062ee94
R10: dffffc0000000000 R11: fffff5200062ee94 R12: ffffea00023ec190
R13: dffffc0000000000 R14: ffff88801e505148 R15: ffffea00023f5fd0
FS: 00007f2a1c273380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f12e7cb4580 CR3: 0000000024c67000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__list_add_valid include/linux/list.h:88 [inline]
__list_add include/linux/list.h:150 [inline]
list_add_tail include/linux/list.h:183 [inline]
__add_partial mm/slub.c:2483 [inline]
add_partial+0x50/0xf0 mm/slub.c:2493
__put_partials+0x89/0x130 mm/slub.c:2909
put_cpu_partial+0x17b/0x250 mm/slub.c:2997
__slab_free+0x2fe/0x410 mm/slub.c:4166
qlink_free mm/kasan/quarantine.c:160 [inline]
qlist_free_all+0x6d/0xd0 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:324
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3813 [inline]
slab_alloc_node mm/slub.c:3860 [inline]
kmem_cache_alloc_node+0x18f/0x380 mm/slub.c:3903
__alloc_skb+0x181/0x420 net/core/skbuff.c:641
alloc_skb include/linux/skbuff.h:1296 [inline]
alloc_skb_with_frags+0xc3/0x780 net/core/skbuff.c:6394
sock_alloc_send_pskb+0x919/0xa50 net/core/sock.c:2784
unix_dgram_sendmsg+0x696/0x2200 net/unix/af_unix.c:1974
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
__sys_sendto+0x440/0x600 net/socket.c:2191
__do_sys_sendto net/socket.c:2203 [inline]
__se_sys_sendto net/socket.c:2199 [inline]
__x64_sys_sendto+0xde/0xf0 net/socket.c:2199
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f2a1c3d59b5
Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffdf9bf33e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f2a1c3d59b5
RDX: 000000000000005b RSI: 00005629b399dcc0 RDI: 0000000000000003
RBP: 00005629b3999910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007f2a1c563212 R14: 00007ffdf9bf34e8 R15: 0000000000000000
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.310 msecs