Kernel bug: BUG: stack guard page was hit in sys_open
Subsystem: mm, v9fs
Status: fixed

Crash report:
BUG: TASK stack guard page was hit at ffffc90005abfff8 (stack is ffffc90005ac0000..ffffc90005ac8000)
Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 6005 Comm: syz-executor698 Not tainted 6.12.0-rc7-syzkaller-00189-ge8bdb3c8be08 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:mark_lock+0xb0/0xc60 kernel/locking/lockdep.c:4703
Code: fe 09 0f 87 e3 00 00 00 41 83 fe 08 49 89 fc 48 89 f3 0f 84 97 00 00 00 41 bd 01 00 00 00 44 89 f1 41 d3 e5 4d 63 ed 48 89 df <e8> cb 6b ff ff 48 ba 00 00 00 00 00 fc ff df 48 8d 78 60 48 89 f9
RSP: 0018:ffffc90005ac0000 EFLAGS: 00010002
RAX: 0000000000000000 RBX: ffff888029b953b0 RCX: 0000000000000003
RDX: 0000000000000002 RSI: ffff888029b953b0 RDI: ffff888029b953b0
RBP: ffffc90005ac0138 R08: 0000000000000000 R09: 0000000000000006
R10: ffffffff96e2ed1f R11: 0000000000000002 R12: ffff888029b94880
R13: 0000000000000200 R14: 0000000000000009 R15: 1ffff92000b58006
FS:  00007f59e396f6c0(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90005abfff8 CR3: 000000003c6a2000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <#DF>
 </#DF>
 <TASK>
 mark_usage kernel/locking/lockdep.c:4646 [inline]
 __lock_acquire+0x906/0x3ce0 kernel/locking/lockdep.c:5156
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 page_ext_get+0x3a/0x310 mm/page_ext.c:525
 __set_page_owner+0x96/0x560 mm/page_owner.c:322
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556
 prep_new_page mm/page_alloc.c:1564 [inline]
 get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474
 __alloc_pages_noprof+0x223/0x25a0 mm/page_alloc.c:4750
 alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
 alloc_slab_page mm/slub.c:2412 [inline]
 allocate_slab mm/slub.c:2578 [inline]
 new_slab+0x2c9/0x410 mm/slub.c:2631
 ___slab_alloc+0xdac/0x1880 mm/slub.c:3818
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908
 __slab_alloc_node mm/slub.c:3961 [inline]
 slab_alloc_node mm/slub.c:4122 [inline]
 kmem_cache_alloc_noprof+0x2a7/0x2f0 mm/slub.c:4141
 p9_tag_alloc+0x9c/0x870 net/9p/client.c:281
 p9_client_prepare_req+0x19f/0x4d0 net/9p/client.c:644
 p9_client_zc_rpc.constprop.0+0x105/0x880 net/9p/client.c:793
 p9_client_read_once+0x443/0x820 net/9p/client.c:1570
 p9_client_read+0x13f/0x1b0 net/9p/client.c:1534
 v9fs_issue_read+0x115/0x310 fs/9p/vfs_addr.c:74
 netfs_retry_read_subrequests fs/netfs/read_retry.c:60 [inline]
 netfs_retry_reads+0x153a/0x1d00 fs/netfs/read_retry.c:232
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_dispatch_unbuffered_reads fs/netfs/direct_read.c:103 [inline]
 netfs_unbuffered_read fs/netfs/direct_read.c:127 [inline]
 netfs_unbuffered_read_iter_locked+0x12f6/0x19b0 fs/netfs/direct_read.c:221
 netfs_unbuffered_read_iter+0xc5/0x100 fs/netfs/direct_read.c:256
 v9fs_file_read_iter+0xbf/0x100 fs/9p/vfs_file.c:361
 __kernel_read+0x3f1/0xb50 fs/read_write.c:527
 integrity_kernel_read+0x7f/0xb0 security/integrity/iint.c:28
 ima_calc_file_hash_tfm+0x2c9/0x3e0 security/integrity/ima/ima_crypto.c:480
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline]
 ima_calc_file_hash+0x1ba/0x490 security/integrity/ima/ima_crypto.c:568
 ima_collect_measurement+0x89f/0xa40 security/integrity/ima/ima_api.c:293
 process_measurement+0x1271/0x2370 security/integrity/ima/ima_main.c:372
 ima_file_check+0xc1/0x110 security/integrity/ima/ima_main.c:572
 security_file_post_open+0x8e/0x210 security/security.c:3129
 do_open fs/namei.c:3776 [inline]
 path_openat+0x1419/0x2d60 fs/namei.c:3933
 do_filp_open+0x1dc/0x430 fs/namei.c:3960
 do_sys_openat2+0x17a/0x1e0 fs/open.c:1415
 do_sys_open fs/open.c:1430 [inline]
 __do_sys_open fs/open.c:1438 [inline]
 __se_sys_open fs/open.c:1434 [inline]
 __x64_sys_open+0x154/0x1e0 fs/open.c:1434
 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: 0033:0x7f59e39b43e9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f59e396f218 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f59e3a3e308 RCX: 00007f59e39b43e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000140
RBP: 00007f59e3a3e300 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f59e3a3e30c
R13: 00007f59e3a0b074 R14: 0030656c69662f2e R15: 00000000ffffff3c
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:mark_lock+0xb0/0xc60 kernel/locking/lockdep.c:4703
Code: fe 09 0f 87 e3 00 00 00 41 83 fe 08 49 89 fc 48 89 f3 0f 84 97 00 00 00 41 bd 01 00 00 00 44 89 f1 41 d3 e5 4d 63 ed 48 89 df <e8> cb 6b ff ff 48 ba 00 00 00 00 00 fc ff df 48 8d 78 60 48 89 f9
RSP: 0018:ffffc90005ac0000 EFLAGS: 00010002
RAX: 0000000000000000 RBX: ffff888029b953b0 RCX: 0000000000000003
RDX: 0000000000000002 RSI: ffff888029b953b0 RDI: ffff888029b953b0
RBP: ffffc90005ac0138 R08: 0000000000000000 R09: 0000000000000006
R10: ffffffff96e2ed1f R11: 0000000000000002 R12: ffff888029b94880
R13: 0000000000000200 R14: 0000000000000009 R15: 1ffff92000b58006
FS:  00007f59e396f6c0(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90005abfff8 CR3: 000000003c6a2000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	fe 09                	decb   (%rcx)
   2:	0f 87 e3 00 00 00    	ja     0xeb
   8:	41 83 fe 08          	cmp    $0x8,%r14d
   c:	49 89 fc             	mov    %rdi,%r12
   f:	48 89 f3             	mov    %rsi,%rbx
  12:	0f 84 97 00 00 00    	je     0xaf
  18:	41 bd 01 00 00 00    	mov    $0x1,%r13d
  1e:	44 89 f1             	mov    %r14d,%ecx
  21:	41 d3 e5             	shl    %cl,%r13d
  24:	4d 63 ed             	movslq %r13d,%r13
  27:	48 89 df             	mov    %rbx,%rdi
* 2a:	e8 cb 6b ff ff       	call   0xffff6bfa <-- trapping instruction
  2f:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  36:	fc ff df
  39:	48 8d 78 60          	lea    0x60(%rax),%rdi
  3d:	48 89 f9             	mov    %rdi,%rcx