INFO: task syz.8.24:5532 blocked for more than 143 seconds.
      Not tainted 5.15.175-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.24        state:D stack:26872 pid: 5532 ppid:  5510 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5027 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
 schedule+0x11b/0x1f0 kernel/sched/core.c:6456
 rwsem_down_write_slowpath+0xf0c/0x16a0 kernel/locking/rwsem.c:1165
 filemap_invalidate_lock include/linux/fs.h:834 [inline]
 blk_ioctl_zeroout block/ioctl.c:183 [inline]
 blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
 blkdev_ioctl+0x286/0x6b0 block/ioctl.c:598
 block_ioctl+0xb1/0xf0 block/fops.c:493
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fde323c3d29
RSP: 002b:00007ffd3bfb95b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fde325b3fa0 RCX: 00007fde323c3d29
RDX: 0000000020000080 RSI: 000000000000127f RDI: 0000000000000003
RBP: 00007fde3243fb08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fde325b3fa0 R14: 00007fde325b3fa0 R15: 0000000000000313
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffffffff8cb1fd20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3931:
 #0: ffff88814c827098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
 #1: ffffc900025c62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
1 lock held by syz.7.23/5374:
1 lock held by syz.8.24/5532:
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.9.25/5682:
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.0.26/5885:
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.1.27/6385:
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.2.28/6746:
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.3.29/7221:
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.4.30/7698:
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.5.31/8197:
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
 #0: ffff88814090f338 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.175-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
 watchdog+0xe72/0xeb0 kernel/hung_task.c:295
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5374 Comm: syz.7.23 Not tainted 5.15.175-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:unwind_next_frame+0xbb4/0x1fa0 arch/x86/kernel/unwind_orc.c:547
Code: 00 00 fc ff df 48 8b 04 24 48 89 03 48 8b 44 24 60 0f b6 04 08 84 c0 48 8b 5c 24 68 48 8b 6c 24 18 0f 85 39 10 00 00 c6 03 00 <ba> 10 00 00 00 48 8b 5c 24 20 48 89 df 31 f6 e8 f8 ad 91 00 48 ba
RSP: 0018:ffffc9000361eba8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc9000361ec95 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffc9000361edd8
RBP: ffffffff8e84fad6 R08: 000000000000000c R09: ffffc9000361ed50
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1d09f5a
R13: 1ffffffff1d09f5a R14: ffffffff8e84fad2 R15: ffffc9000361ec60
FS:  000055557ced3500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6d6eaa4440 CR3: 0000000025b78000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 __kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x53/0x380 mm/slab.h:519
 slab_alloc_node mm/slub.c:3220 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233
 mempool_alloc+0x17f/0x590 mm/mempool.c:393
 bio_alloc_bioset+0x132/0x8c0 block/bio.c:466
 bio_clone_fast+0x25/0x170 block/bio.c:750
 bio_split+0xa7/0x2d0 block/bio.c:1505
 blk_bio_segment_split block/blk-merge.c:301 [inline]
 __blk_queue_split+0x111d/0x1770 block/blk-merge.c:350
 blk_mq_submit_bio+0x239/0x1c40 block/blk-mq.c:2218
 __submit_bio+0x813/0x850 block/blk-core.c:917
 __submit_bio_noacct_mq block/blk-core.c:997 [inline]
 submit_bio_noacct+0xa44/0xb30 block/blk-core.c:1027
 submit_bio+0x2dd/0x560 block/blk-core.c:1089
 blk_next_bio block/blk-lib.c:19 [inline]
 __blkdev_issue_zero_pages+0x155/0x3b0 block/blk-lib.c:319
 blkdev_issue_zeroout+0x2c5/0x470 block/blk-lib.c:413
 blk_ioctl_zeroout block/ioctl.c:188 [inline]
 blkdev_common_ioctl+0x1ce5/0x2080 block/ioctl.c:487
 blkdev_ioctl+0x286/0x6b0 block/ioctl.c:598
 block_ioctl+0xb1/0xf0 block/fops.c:493
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fce60223d29
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:00007fff1a11a698 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fce60413fa0 RCX: 00007fce60223d29
RDX: 0000000020000080 RSI: 000000000000127f RDI: 0000000000000003
RBP: 00007fce6029fb08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fce60413fa0 R14: 00007fce60413fa0 R15: 0000000000000313
 </TASK>