INFO: task syz.0.6331:28550 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.6331      state:D stack:26968 pid:28550 tgid:28548 ppid:28029  task_flags:0x440040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x149b/0x4fd0 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6960
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
 rwsem_down_read_slowpath+0x5fd/0x8f0 kernel/locking/rwsem.c:1086
 __down_read_common kernel/locking/rwsem.c:1261 [inline]
 __down_read kernel/locking/rwsem.c:1274 [inline]
 down_read+0x99/0x2e0 kernel/locking/rwsem.c:1539
 filemap_invalidate_lock_shared include/linux/fs.h:1092 [inline]
 page_cache_ra_order+0x37a/0xe50 mm/readahead.c:494
 do_sync_mmap_readahead+0x66a/0x870 mm/filemap.c:3400
 filemap_fault+0x6ac/0x1290 mm/filemap.c:3549
 __do_fault+0x138/0x390 mm/memory.c:5320
 do_shared_fault mm/memory.c:5819 [inline]
 do_fault mm/memory.c:5893 [inline]
 do_pte_missing+0x6ad/0x3330 mm/memory.c:4401
 handle_pte_fault mm/memory.c:6273 [inline]
 __handle_mm_fault mm/memory.c:6411 [inline]
 handle_mm_fault+0x1b26/0x32b0 mm/memory.c:6580
 do_user_addr_fault+0x764/0x1380 arch/x86/mm/fault.c:1387
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x71/0xd0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0010:__put_user_nocheck_4+0x3/0x10 arch/x86/lib/putuser.S:104
Code: d9 0f 01 cb 89 01 31 c9 0f 01 ca e9 d7 6d 03 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 01 cb <89> 01 31 c9 0f 01 ca c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000c6af8b8 EFLAGS: 00050202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000020000004b4b0
RDX: ffff888056029e80 RSI: 0000000000000002 RDI: 00000000ffffffff
RBP: ffffc9000c6afa30 R08: ffffc9000c6af667 R09: 1ffff920018d5ecc
R10: dffffc0000000000 R11: fffff520018d5ecd R12: 0000000000000002
R13: dffffc0000000000 R14: 0000000000000000 R15: 000020000004b480
 ____sys_recvmsg+0x2ab/0x460 net/socket.c:2825
 ___sys_recvmsg+0x1b5/0x510 net/socket.c:2854
 do_recvmmsg+0x307/0x770 net/socket.c:2949
 __sys_recvmmsg net/socket.c:3023 [inline]
 __do_sys_recvmmsg net/socket.c:3046 [inline]
 __se_sys_recvmmsg net/socket.c:3039 [inline]
 __x64_sys_recvmmsg+0x190/0x240 net/socket.c:3039
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f39d358f749
RSP: 002b:00007f39d44db038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f39d37e6090 RCX: 00007f39d358f749
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000008
RBP: 00007f39d3613f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f39d37e6128 R14: 00007f39d37e6090 R15: 00007f39d390fa28
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/31:
 #0: ffffffff8df41aa0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #0: ffffffff8df41aa0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
 #0: ffffffff8df41aa0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
2 locks held by getty/5585:
 #0: ffff8880310aa0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000332e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x449/0x1460 drivers/tty/n_tty.c:2211
2 locks held by kworker/1:7/22942:
2 locks held by kworker/1:8/22943:
 #0: ffff8880b863a918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xad/0x140 kernel/sched/core.c:647
 #1: ffff8880b8724588 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880 kernel/sched/psi.c:933
2 locks held by syz.1.6204/27869:
 #0: ffff888023124ca8 (&sb->s_type->i_mutex_key#10){++++}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline]
 #0: ffff888023124ca8 (&sb->s_type->i_mutex_key#10){++++}-{4:4}, at: blkdev_fallocate+0x260/0x530 block/fops.c:908
 #1: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock include/linux/fs.h:1082 [inline]
 #1: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: blkdev_fallocate+0x290/0x530 block/fops.c:909
1 lock held by syz.0.6331/28550:
 #0: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1092 [inline]
 #0: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: page_cache_ra_order+0x37a/0xe50 mm/readahead.c:494
1 lock held by syz.7.6431/28933:
 #0: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1092 [inline]
 #0: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: page_cache_ra_order+0x37a/0xe50 mm/readahead.c:494
1 lock held by syz.7.6431/28935:
 #0: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1092 [inline]
 #0: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: page_cache_ra_order+0x37a/0xe50 mm/readahead.c:494
1 lock held by syz.7.6431/28936:
 #0: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1092 [inline]
 #0: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: page_cache_ra_order+0x37a/0xe50 mm/readahead.c:494
1 lock held by syz.6.6635/29611:
 #0: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1092 [inline]
 #0: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: page_cache_ra_order+0x37a/0xe50 mm/readahead.c:494
1 lock held by syz.6.6635/29614:
 #0: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1092 [inline]
 #0: ffff888023124e48 (mapping.invalidate_lock){++++}-{4:4}, at: page_cache_ra_order+0x37a/0xe50 mm/readahead.c:494
2 locks held by syz.5.6661/29708:
 #0: ffff8880292f40a8 (&ctx->uring_lock){+.+.}-{4:4}, at: __do_sys_io_uring_enter io_uring/io_uring.c:3279 [inline]
 #0: ffff8880292f40a8 (&ctx->uring_lock){+.+.}-{4:4}, at: __se_sys_io_uring_enter+0x2d5/0x2b60 io_uring/io_uring.c:3219
 #1: ffff888023124ca8 (&sb->s_type->i_mutex_key#10){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1042 [inline]
 #1: ffff888023124ca8 (&sb->s_type->i_mutex_key#10){++++}-{4:4}, at: blkdev_read_iter+0x2f8/0x440 block/fops.c:855

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
 watchdog+0xf95/0xfe0 kernel/hung_task.c:515
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30195 Comm: dhcpcd-run-hook Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__might_resched+0x0/0x4d0 kernel/sched/core.c:8782
Code: e8 94 00 4c 89 e7 89 ee e9 57 ff ff ff 66 66 66 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 55 41 57 41 56 41 55 41 54 53 48 83 ec 20 89 d3 89 74
RSP: 0018:ffffc900041cf558 EFLAGS: 00000286
RAX: 0000000000000000 RBX: ffff88807dd3cee8 RCX: ffff88803520db80
RDX: 0000000000000000 RSI: 0000000000000600 RDI: ffffffff8b6b2280
RBP: ffffc900041cf6d0 R08: ffff88803520db80 R09: 0000000000000004
R10: 0000000000000003 R11: 0000000000000000 R12: 1ffff1100fba79dc
R13: 0000000000000017 R14: dffffc0000000000 R15: ffff88807dd3cee0
FS:  0000000000000000(0000) GS:ffff888125f21000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed8b13e440 CR3: 000000003adee000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 down_read+0x23/0x2e0 kernel/locking/rwsem.c:1536
 anon_vma_lock_read include/linux/rmap.h:137 [inline]
 validate_mm+0x1cc/0x4a0 mm/vma.c:672
 mmap_region+0x1947/0x1d10 mm/vma.c:2792
 do_mmap+0xc45/0x10d0 mm/mmap.c:558
 vm_mmap_pgoff+0x2a6/0x4d0 mm/util.c:581
 ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:604
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fed8b420242
Code: 08 00 04 00 00 eb e2 90 41 f7 c1 ff 0f 00 00 75 27 55 89 cd 53 48 89 fb 48 85 ff 74 33 41 89 ea 48 89 df b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5e 5b 5d c3 0f 1f 00 c7 05 46 40 01 00 16 00
RSP: 002b:00007ffd139b9858 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fed8b12c000 RCX: 00007fed8b420242
RDX: 0000000000000005 RSI: 0000000000008000 RDI: 00007fed8b12c000
RBP: 0000000000000812 R08: 0000000000000003 R09: 0000000000003000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffd139b98a8
R13: 00007fed8b3f5580 R14: 00007ffd139b9cd0 R15: 00000fffa273730e
 </TASK>