INFO: task syz-executor:5859 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21960 pid:5859  tgid:5859  ppid:1      task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 v9fs_evict_inode+0x170/0x320
 evict+0x504/0x9c0
 __dentry_kill+0x209/0x660
 dput+0x19f/0x2b0
 shrink_dcache_for_umount+0xa0/0x170
 generic_shutdown_super+0x67/0x2c0
 kill_anon_super+0x3b/0x70
 v9fs_kill_super+0x4c/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff53a98ff17
RSP: 002b:00007ffe59f8d088 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007ff53aa11c05 RCX: 00007ff53a98ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe59f8d140
RBP: 00007ffe59f8d140 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe59f8e1d0
R13: 00007ff53aa11c05 R14: 000000000000ee80 R15: 00007ffe59f8e210
 </TASK>
INFO: task syz.3.402:7072 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.402       state:D stack:26408 pid:7072  tgid:7064  ppid:6432   task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x5fd/0x8f0
 down_read+0x98/0x2e0
 super_lock+0x2a9/0x3b0
 __iterate_supers+0x126/0x290
 __se_sys_quotactl+0x353/0x950
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb66e78ebe9
RSP: 002b:00007fb66c9d5038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007fb66e9b6180 RCX: 00007fb66e78ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100
RBP: 00007fb66e811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb66e9b6218 R14: 00007fb66e9b6180 R15: 00007ffe792751c8
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 15607 Comm: syz.9.2315 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x83/0x90
Code: 8d 52 28 4d 39 ca 77 22 89 ff 89 f6 49 ff c0 4c 89 01 48 c7 44 11 08 05 00 00 00 48 89 7c 11 10 48 89 74 11 18 48 89 44 11 20 <c3> cc cc cc cc cc 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900073f60d0 EFLAGS: 00000297
RAX: ffffffff84d0de26 RBX: 0000000000000014 RCX: 0000000000000002
RDX: ffff88803f50d640 RSI: 0000000000000004 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffff88813509984c R09: ffff88813509984b
R10: 1ffff11026a13309 R11: ffffed10236e9a78 R12: ffffffff8be34d2a
R13: 0000000000000000 R14: ffff88811b740000 R15: 0000000000000000
FS:  00007f7cf4a266c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c24fa60 CR3: 00000001138a2000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 sw842_compress+0xd46/0x49d0
 scomp_acomp_comp_decomp+0x6dd/0x9e0
 crypto_acomp_compress+0x42f/0xb20
 zswap_store+0xe3c/0x1d10
 swap_writeout+0x6d9/0xce0
 shmem_writeout+0xf70/0x1210
 shrink_folio_list+0x3009/0x4cd0
 reclaim_folio_list+0xeb/0x500
 reclaim_pages+0x49a/0x5b0
 madvise_cold_or_pageout_pte_range+0x14ad/0x1d00
 walk_pgd_range+0xfe9/0x1d40
 __walk_page_range+0x14c/0x710
 walk_page_range_vma+0x393/0x440
 madvise_vma_behavior+0x31c2/0x3af0
 madvise_walk_vmas+0x51c/0xa30
 madvise_do_behavior+0x38e/0x550
 do_madvise+0x1bc/0x270
 __x64_sys_madvise+0xa7/0xc0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7cf3b8ebe9
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:00007f7cf4a26038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f7cf3db6090 RCX: 00007f7cf3b8ebe9
RDX: 0000000000000015 RSI: 0000000000600003 RDI: 0000200000000000
RBP: 00007f7cf3c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7cf3db6128 R14: 00007f7cf3db6090 R15: 00007ffd0566b508
 </TASK>
