syzbot

INFO: task syz-executor112:3645 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc7-syzkaller-00159-ga1e9185d20b5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor112 state:D stack:26712 pid:3645  ppid:3639   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5209 [inline]
 __schedule+0x8fc/0xda0 kernel/sched/core.c:6521
 schedule+0xcb/0x190 kernel/sched/core.c:6597
 rwsem_down_write_slowpath+0xfdc/0x14a0 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x231/0x270 kernel/locking/rwsem.c:1563
 filemap_invalidate_lock include/linux/fs.h:801 [inline]
 blkdev_fallocate+0x21f/0x390 block/fops.c:641
 vfs_fallocate+0x515/0x670 fs/open.c:323
 ksys_fallocate fs/open.c:346 [inline]
 __do_sys_fallocate fs/open.c:354 [inline]
 __se_sys_fallocate fs/open.c:352 [inline]
 __x64_sys_fallocate+0xb9/0x100 fs/open.c:352
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3aaaf68e09
RSP: 002b:00007fff08738568 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f3aaaf68e09
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 00400000000000a2 R11: 0000000000000246 R12: 00007f3aaaf2c5e0
R13: 0000000000000000 R14: 00007fff08738590 R15: 00007fff08738580
 </TASK>
INFO: task syz-executor112:3647 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc7-syzkaller-00159-ga1e9185d20b5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor112 state:D stack:27240 pid:3647  ppid:3643   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5209 [inline]
 __schedule+0x8fc/0xda0 kernel/sched/core.c:6521
 schedule+0xcb/0x190 kernel/sched/core.c:6597
 rwsem_down_write_slowpath+0xfdc/0x14a0 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x231/0x270 kernel/locking/rwsem.c:1563
 filemap_invalidate_lock include/linux/fs.h:801 [inline]
 blkdev_fallocate+0x21f/0x390 block/fops.c:641
 vfs_fallocate+0x515/0x670 fs/open.c:323
 ksys_fallocate fs/open.c:346 [inline]
 __do_sys_fallocate fs/open.c:354 [inline]
 __se_sys_fallocate fs/open.c:352 [inline]
 __x64_sys_fallocate+0xb9/0x100 fs/open.c:352
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3aaaf68e09
RSP: 002b:00007fff08738568 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f3aaaf68e09
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 00400000000000a2 R11: 0000000000000246 R12: 00007f3aaaf2c5e0
R13: 0000000000000000 R14: 00007fff08738590 R15: 00007fff08738580
 </TASK>
INFO: task syz-executor112:3665 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc7-syzkaller-00159-ga1e9185d20b5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor112 state:D stack:25632 pid:3665  ppid:3636   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5209 [inline]
 __schedule+0x8fc/0xda0 kernel/sched/core.c:6521
 schedule+0xcb/0x190 kernel/sched/core.c:6597
 rwsem_down_write_slowpath+0xfdc/0x14a0 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x231/0x270 kernel/locking/rwsem.c:1563
 filemap_invalidate_lock include/linux/fs.h:801 [inline]
 blkdev_fallocate+0x21f/0x390 block/fops.c:641
 vfs_fallocate+0x515/0x670 fs/open.c:323
 ksys_fallocate fs/open.c:346 [inline]
 __do_sys_fallocate fs/open.c:354 [inline]
 __se_sys_fallocate fs/open.c:352 [inline]
 __x64_sys_fallocate+0xb9/0x100 fs/open.c:352
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3aaaf68e09
RSP: 002b:00007fff08738568 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f3aaaf68e09
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 00400000000000a2 R11: 0000000000000246 R12: 000000000000e597
R13: 00007fff0873857c R14: 00007fff08738590 R15: 00007fff08738580
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8d323fb0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8d3247b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
 #0: ffffffff8d323de0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3313:
 #0: ffff88814b369098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2177
1 lock held by syz-executor112/3645:
 #0: ffff888140cdbfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline]
 #0: ffff888140cdbfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641
1 lock held by syz-executor112/3646:
1 lock held by syz-executor112/3647:
 #0: ffff888140cdbfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline]
 #0: ffff888140cdbfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641
1 lock held by syz-executor112/3665:
 #0: ffff888140cdbfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline]
 #0: ffff888140cdbfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641
1 lock held by syz-executor112/3666:
 #0: ffff888140cdbfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline]
 #0: ffff888140cdbfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641
1 lock held by syz-executor112/3673:
 #0: ffff888140cdbfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline]
 #0: ffff888140cdbfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641

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

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc7-syzkaller-00159-ga1e9185d20b5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x4e3/0x560 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x19b/0x3e0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0xcf5/0xd40 kernel/hung_task.c:377
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2986 Comm: klogd Not tainted 6.1.0-rc7-syzkaller-00159-ga1e9185d20b5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:PageBuddy include/linux/page-flags.h:973 [inline]
RIP: 0010:page_is_buddy mm/internal.h:274 [inline]
RIP: 0010:find_buddy_page_pfn+0x70/0x1f0 mm/internal.h:339
Code: 08 48 89 ef e8 71 99 0b 00 48 89 5d 00 4b 8d 6c 2c 30 48 89 e8 48 c1 e8 03 42 8a 04 38 84 c0 0f 85 ef 00 00 00 b8 80 00 00 f0 <23> 45 00 3d 00 00 00 f0 0f 85 cb 00 00 00 4b 8d 6c 2c 28 48 89 e8
RSP: 0018:ffffc90002f6f408 EFLAGS: 00010046
RAX: 00000000f0000080 RBX: 0000000000031a00 RCX: 0000000000000009
RDX: 0000000000000009 RSI: 0000000000031800 RDI: ffffea0000c60000
RBP: ffffea0000c68030 R08: dffffc0000000000 R09: fffff9400018c007
R10: fffff9400018c007 R11: 1ffffd400018c006 R12: ffffea0000c60000
R13: 0000000000008000 R14: 0000000000000009 R15: dffffc0000000000
FS:  00007f6c5db63800(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555653c2c0 CR3: 000000007ec6f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 buddy_merge_likely mm/page_alloc.c:1083 [inline]
 __free_one_page+0x44b/0x990 mm/page_alloc.c:1180
 free_pcppages_bulk+0x318/0x500 mm/page_alloc.c:1609
 free_unref_page+0x33d/0x630 mm/page_alloc.c:3506
 free_slab mm/slub.c:2031 [inline]
 discard_slab mm/slub.c:2037 [inline]
 __unfreeze_partials+0x1ab/0x200 mm/slub.c:2586
 put_cpu_partial+0x116/0x180 mm/slub.c:2662
 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x169/0x180 mm/kasan/quarantine.c:294
 ____kasan_kmalloc mm/kasan/common.c:337 [inline]
 __kasan_kmalloc+0x1f/0xb0 mm/kasan/common.c:380
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slab_common.c:955 [inline]
 __kmalloc_node_track_caller+0xad/0x190 mm/slab_common.c:975
 kmalloc_reserve net/core/skbuff.c:437 [inline]
 __alloc_skb+0x11d/0x620 net/core/skbuff.c:509
 alloc_skb include/linux/skbuff.h:1267 [inline]
 alloc_skb_with_frags+0xb4/0x780 net/core/skbuff.c:6126
 sock_alloc_send_pskb+0x930/0xa70 net/core/sock.c:2719
 unix_dgram_sendmsg+0x5b3/0x2050 net/unix/af_unix.c:1943
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 __sys_sendto+0x46d/0x5f0 net/socket.c:2117
 __do_sys_sendto net/socket.c:2129 [inline]
 __se_sys_sendto net/socket.c:2125 [inline]
 __x64_sys_sendto+0xda/0xf0 net/socket.c:2125
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6c5dcff0ac
Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10
RSP: 002b:00007ffd4133b498 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6c5dcff0ac
RDX: 000000000000003e RSI: 000055cfc1b4cd90 RDI: 0000000000000003
RBP: 000055cfc1b48910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000001 R14: 00007f6c5de7a77d R15: 00007ffd4133b5a8
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.122 msecs