INFO: task syz.4.120:5632 blocked for more than 143 seconds.
Not tainted 6.10.0-rc7-next-20240709-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.120 state:D stack:25520 pid:5632 tgid:5632 ppid:5096 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
io_schedule+0x8d/0x110 kernel/sched/core.c:7480
folio_wait_bit_common+0x882/0x12b0 mm/filemap.c:1307
folio_lock include/linux/pagemap.h:1050 [inline]
remove_inode_single_folio fs/hugetlbfs/inode.c:603 [inline]
remove_inode_hugepages+0x508/0x1520 fs/hugetlbfs/inode.c:669
hugetlbfs_evict_inode+0x23/0x70 fs/hugetlbfs/inode.c:689
evict+0x2a8/0x630 fs/inode.c:669
__dentry_kill+0x20d/0x630 fs/dcache.c:607
dput+0x19f/0x2b0 fs/dcache.c:849
__fput+0x5f8/0x8a0 fs/file_table.c:430
task_work_run+0x24f/0x310 kernel/task_work.c:204
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f313e375bd9
RSP: 002b:00007ffe0e7ccd58 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 0000000000016a05 RCX: 00007f313e375bd9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: ffffffffffffffff R08: 0000000000000001 R09: 000000040e7cd07f
R10: 00007f313e200000 R11: 0000000000000246 R12: 00007f313e503f6c
R13: 0000000000000032 R14: 00007f313e505a60 R15: 00007f313e503f60
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc7-next-20240709-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8217 Comm: syz.1.958 Not tainted 6.10.0-rc7-next-20240709-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:236 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x35/0x90 kernel/kcov.c:290
Code: 14 25 40 d7 03 00 65 8b 05 50 48 70 7e a9 00 01 ff 00 74 10 a9 00 01 00 00 74 5b 83 ba 1c 16 00 00 00 74 52 8b 82 f8 15 00 00 <83> f8 03 75 47 48 8b 8a 00 16 00 00 44 8b 8a fc 15 00 00 49 c1 e1
RSP: 0018:ffffc90008e771e0 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffff81ca7270
RDX: ffff88804a1c0000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81ca7293 R09: 1ffffd4000b36d98
R10: dffffc0000000000 R11: fffff94000b36d99 R12: ffffea00059b6cc8
R13: 1ffffd4000b36d99 R14: ffffea00059b6cc0 R15: dffffc0000000000
FS: 00007f50ee1b96c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555b76049220 CR3: 000000002e4e2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_xor_unlock_is_negative_byte arch/x86/include/asm/bitops.h:105 [inline]
xor_unlock_is_negative_byte include/asm-generic/bitops/instrumented-lock.h:80 [inline]
folio_xor_flags_has_waiters include/linux/page-flags.h:753 [inline]
folio_unlock+0x103/0x2f0 mm/filemap.c:1508
shmem_read_folio_gfp+0x121/0x170 mm/shmem.c:5210
drm_gem_get_pages+0x21b/0xe50 drivers/gpu/drm/drm_gem.c:568
drm_gem_shmem_get_pages+0xdd/0x290 drivers/gpu/drm/drm_gem_shmem_helper.c:177
drm_gem_shmem_vmap+0x2ba/0x630 drivers/gpu/drm/drm_gem_shmem_helper.c:337
drm_gem_vmap drivers/gpu/drm/drm_gem.c:1205 [inline]
drm_gem_vmap_unlocked+0x103/0x1d0 drivers/gpu/drm/drm_gem.c:1247
drm_gem_fb_vmap+0xa6/0x810 drivers/gpu/drm/drm_gem_framebuffer_helper.c:365
drm_atomic_helper_prepare_planes+0x2b2/0xb50 drivers/gpu/drm/drm_atomic_helper.c:2601
drm_atomic_helper_commit+0x18b/0x9f0 drivers/gpu/drm/drm_atomic_helper.c:2029
drm_atomic_commit+0x296/0x2f0 drivers/gpu/drm/drm_atomic.c:1522
drm_atomic_helper_update_plane+0x238/0x3a0 drivers/gpu/drm/drm_atomic_helper.c:3190
drm_mode_cursor_universal drivers/gpu/drm/drm_plane.c:1229 [inline]
drm_mode_cursor_common+0xd6e/0x1570 drivers/gpu/drm/drm_plane.c:1288
drm_mode_cursor_ioctl+0xe1/0x160 drivers/gpu/drm/drm_plane.c:1338
drm_ioctl_kernel+0x33a/0x440 drivers/gpu/drm/drm_ioctl.c:745
drm_ioctl+0x611/0xad0 drivers/gpu/drm/drm_ioctl.c:842
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f50ed375bd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f50ee1b9048 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f50ed503f60 RCX: 00007f50ed375bd9
RDX: 0000000020000340 RSI: 00000000c01c64a3 RDI: 0000000000000003
RBP: 00007f50ed3e4e60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f50ed503f60 R15: 00007ffd917c1b58