INFO: task syz-executor.1:14229 blocked for more than 143 seconds.
Not tainted 6.8.0-rc5-syzkaller-00163-gffd2cb6b718e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28080 pid:14229 tgid:14222 ppid:13827 flags:0x00000006
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_write_slowpath kernel/locking/rwsem.c:1178 [inline]
__down_write_common+0x94c/0x1410 kernel/locking/rwsem.c:1306
filemap_invalidate_lock include/linux/fs.h:849 [inline]
blkdev_fallocate+0x1e9/0x450 block/fops.c:800
vfs_fallocate+0x4b8/0xf70 fs/open.c:328
madvise_remove mm/madvise.c:1002 [inline]
madvise_vma_behavior+0x198a/0x1b50 mm/madvise.c:1026
madvise_walk_vmas+0x1cf/0x2c0 mm/madvise.c:1261
do_madvise+0x337/0x660 mm/madvise.c:1441
__do_sys_madvise mm/madvise.c:1454 [inline]
__se_sys_madvise mm/madvise.c:1452 [inline]
__x64_sys_madvise+0xaa/0x110 mm/madvise.c:1452
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: 0033:0x7f5ac227dda9
RSP: 002b:00007f5ac303d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f5ac23abf80 RCX: 00007f5ac227dda9
RDX: 0000000000000009 RSI: 0000000000001002 RDI: 0000000020711000
RBP: 00007f5ac22ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5ac23abf80 R15: 00007ffe3da2f928
Showing all locks held in the system:
2 locks held by kworker/u4:1/12:
1 lock held by khungtaskd/30:
#0: ffffffff8d7ad2e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d7ad2e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d7ad2e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by getty/4816:
#0: ffff88802f3a00a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015e02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfca/0x1490 drivers/tty/n_tty.c:2201
2 locks held by syz-fuzzer/5079:
4 locks held by syz-executor.3/5103:
2 locks held by syz-executor.1/13078:
1 lock held by syz-executor.1/13645:
1 lock held by syz-executor.1/14229:
#0: ffff88801d14b740 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:849 [inline]
#0: ffff88801d14b740 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e9/0x450 block/fops.c:800
1 lock held by syz-executor.1/14719:
#0: ffff88801d14b740 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:849 [inline]
#0: ffff88801d14b740 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e9/0x450 block/fops.c:800
1 lock held by syz-executor.1/15181:
#0: ffff88801d14b740 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:849 [inline]
#0: ffff88801d14b740 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e9/0x450 block/fops.c:800
3 locks held by syz-executor.1/15200:
#0: ffff88802f3d4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x2433/0x2790 kernel/signal.c:2879
#1: ffff88804d8101a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:155 [inline]
#1: ffff88804d8101a0 (&mm->mmap_lock){++++}-{3:3}, at: __get_user_pages_locked mm/gup.c:1484 [inline]
#1: ffff88804d8101a0 (&mm->mmap_lock){++++}-{3:3}, at: get_dump_page+0xb7/0x230 mm/gup.c:2031
#2: ffff88801d14b740 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:859 [inline]
#2: ffff88801d14b740 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0x13a/0x5f0 mm/readahead.c:225
2 locks held by syz-executor.2/16011:
#0: ffff888096f28ed0 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#0: ffff888096f28ed0 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: lookup_slow fs/namei.c:1709 [inline]
#0: ffff888096f28ed0 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: walk_component+0x342/0x5b0 fs/namei.c:2001
#1: ffff888096f29348 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:544
2 locks held by syz-executor.4/16022:
#0: ffff8880b943cc98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
#1: ffff8880b9428a08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2d9/0x900 kernel/sched/psi.c:988
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.8.0-rc5-syzkaller-00163-gffd2cb6b718e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
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:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 16013 Comm: syz-executor.2 Not tainted 6.8.0-rc5-syzkaller-00163-gffd2cb6b718e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:__sanitizer_cov_trace_cmp8+0x8/0x20 kernel/kcov.c:283
Code: 00 00 00 e9 ea fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <48> 89 f2 48 89 fe bf 06 00 00 00 e9 b8 fe ff ff 0f 1f 84 00 00 00
RSP: 0018:ffffc90017e7f560 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffc90017e7f5e8 RCX: ffffffff813c5757
RDX: ffff888097c5bb80 RSI: ffffffff8b000000 RDI: ffffffff81d1f6ac
RBP: 0000000000000001 R08: 0000000000000006 R09: ffffffff81d1f6ac
R10: ffffffff81000000 R11: 0000000000000001 R12: ffffffff81d1f6ac
R13: 0000000000000000 R14: ffffc90017e7f6a8 R15: ffffc90017e7f61d
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f58f4379198 CR3: 000000004e196000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
orc_find arch/x86/kernel/unwind_orc.c:206 [inline]
unwind_next_frame+0x1f7/0x2390 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
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+0x3f/0x60 mm/kasan/generic.c:640
poison_slab_object mm/kasan/common.c:241 [inline]
__kasan_slab_free+0x121/0x1c0 mm/kasan/common.c:257
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2121 [inline]
slab_free mm/slub.c:4299 [inline]
kmem_cache_free+0x129/0x360 mm/slub.c:4363
remove_vma+0x12b/0x180 mm/mmap.c:146
exit_mmap+0x4dd/0xb50 mm/mmap.c:3303
__mmput+0x12a/0x4d0 kernel/fork.c:1343
mmput+0x62/0x70 kernel/fork.c:1365
exit_mm kernel/exit.c:569 [inline]
do_exit+0x9a5/0x2ad0 kernel/exit.c:858
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+0x156/0x2b0 kernel/entry/common.c:212
do_syscall_64+0xe5/0x270 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fa85ba7dda9
Code: Unable to access opcode bytes at 0x7fa85ba7dd7f.
RSP: 002b:00007fa85c7c5178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fa85bbac128 RCX: 00007fa85ba7dda9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa85bbac128
RBP: 00007fa85bbac120 R08: 00007fa85c7c56c0 R09: 00007fa85c7c56c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa85bbac12c
R13: 000000000000006e R14: 00007ffe610212e0 R15: 00007ffe610213c8