INFO: task syz.6.8710:975 blocked for more than 143 seconds.
Tainted: G U 6.13.0-syzkaller-07259-g0f8e26b38d7a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.8710 state:D stack:27936 pid:975 tgid:974 ppid:27230 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x1142/0x5b60 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6856
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
__mutex_lock_common kernel/locking/mutex.c:662 [inline]
__mutex_lock+0x6bd/0xb10 kernel/locking/mutex.c:730
nfsd_nl_version_set_doit+0xc5/0x7a0 fs/nfsd/nfsctl.c:1813
genl_family_rcv_msg_doit+0x202/0x2f0 net/netlink/genetlink.c:1115
genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
genl_rcv_msg+0x565/0x800 net/netlink/genetlink.c:1210
netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2543
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1348
netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1892
sock_sendmsg_nosec net/socket.c:713 [inline]
__sock_sendmsg net/socket.c:728 [inline]
____sys_sendmsg+0x9ae/0xb40 net/socket.c:2568
___sys_sendmsg+0x135/0x1e0 net/socket.c:2622
__sys_sendmsg+0x16e/0x220 net/socket.c:2654
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1d5f78cd29
RSP: 002b:00007f1d5f5f9038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1d5f9a5fa0 RCX: 00007f1d5f78cd29
RDX: 0000000000004010 RSI: 00000000200004c0 RDI: 0000000000000006
RBP: 00007f1d5f80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1d5f9a5fa0 R15: 00007fff5ebdcb88
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Tainted: G U 6.13.0-syzkaller-07259-g0f8e26b38d7a #0
Tainted: [U]=USER
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0xf14/0x1240 kernel/hung_task.c:397
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 3797 Comm: syz.8.9324 Tainted: G U 6.13.0-syzkaller-07259-g0f8e26b38d7a #0
Tainted: [U]=USER
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:page_expected_state mm/page_alloc.c:870 [inline]
RIP: 0010:check_new_page mm/page_alloc.c:1452 [inline]
RIP: 0010:check_new_pages mm/page_alloc.c:1466 [inline]
RIP: 0010:__rmqueue_pcplist+0x280/0x1600 mm/page_alloc.c:3015
Code: f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b9 0f 00 00 49 63 47 34 49 8d 7f 38 49 09 c4 48 89 f8 48 c1 e8 03 42 80 3c 28 00 <0f> 85 92 0f 00 00 49 8d 7f 08 4d 0b 67 38 48 89 f8 48 c1 e8 03 42
RSP: 0018:ffffc9000c027280 EFLAGS: 00000246
RAX: 1ffffd4000144bbf RBX: 0000000000000000 RCX: ffffffff820e7aa8
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea0000a25df8
RBP: ffffea0000a25dc0 R08: 0000000000000000 R09: fffff94000144bbe
R10: ffffea0000a25df7 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffea0000a25df4 R15: ffffea0000a25dc0
FS: 00007f15b1bf66c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d2584eadc0 CR3: 0000000087836000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rmqueue_pcplist mm/page_alloc.c:3045 [inline]
rmqueue mm/page_alloc.c:3076 [inline]
get_page_from_freelist+0x3d2/0x2f80 mm/page_alloc.c:3473
__alloc_pages_noprof+0x221/0x2470 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0x2c8/0x620 mm/mempolicy.c:2269
folio_alloc_noprof+0x1e/0xc0 mm/mempolicy.c:2356
filemap_alloc_folio_noprof+0x39b/0x470 mm/filemap.c:1001
__filemap_get_folio+0x539/0xaf0 mm/filemap.c:1943
__iomap_get_folio fs/iomap/buffered-io.c:754 [inline]
iomap_write_begin+0x693/0x1660 fs/iomap/buffered-io.c:797
iomap_write_iter fs/iomap/buffered-io.c:955 [inline]
iomap_file_buffered_write+0x419/0xc70 fs/iomap/buffered-io.c:1039
blkdev_buffered_write block/fops.c:690 [inline]
blkdev_write_iter+0x574/0xd40 block/fops.c:749
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x5ae/0x1150 fs/read_write.c:679
ksys_write+0x12b/0x250 fs/read_write.c:731
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f15b3d8cd29
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:00007f15b1bf6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f15b3fa5fa0 RCX: 00007f15b3d8cd29
RDX: 000000007fffffff RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f15b3e0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f15b3fa5fa0 R15: 00007ffcd0b37828