pkg/report: whack-a-mole folio-related functions

Ignore the following functions:
 - folio_alloc
 - filemap_alloc_folio
 - __filemap_get_folio
 - find_or_create_page
 - do_read_cache_folio
 - read_cache_page
 - pagecache_get_page
 - grab_cache_page_write_begin

that perform allocations within mm/filemap.c

This is to defeat an overly eager report clusterization in
https://syzkaller.appspot.com/bug?extid=828dfc12440b4f6f305d

5 files changed, 300 insertions, 0 deletions

diff --git a/pkg/report/testdata/linux/report/699 b/pkg/report/testdata/linux/report/699
new file mode 100644
index 000000000..6348f1479
--- /dev/null
+++ b/pkg/report/testdata/linux/report/699
@@ -0,0 +1,93 @@
+TITLE: KMSAN: uninit-value in aes_encrypt
+ALT: KMSAN origin in ext4_write_begin
+ALT: bad-access in aes_encrypt
+
+[  311.903743][ T5388] =====================================================
+[  311.910990][ T5388] BUG: KMSAN: uninit-value in aes_encrypt+0x15cc/0x1db0
+[  311.918092][ T5388]  aes_encrypt+0x15cc/0x1db0
+[  311.922836][ T5388]  aesti_encrypt+0x7d/0xf0
+[  311.927414][ T5388]  crypto_ecb_encrypt+0x1e7/0x380
+[  311.932606][ T5388]  crypto_skcipher_encrypt+0xe0/0x150
+[  311.938151][ T5388]  xts_encrypt+0x3c4/0x540
+[  311.942740][ T5388]  crypto_skcipher_encrypt+0xe0/0x150
+[  311.948274][ T5388]  fscrypt_crypt_block+0x52c/0x900
+[  311.953562][ T5388]  fscrypt_encrypt_pagecache_blocks+0x3e7/0x8b0
+[  311.959983][ T5388]  ext4_bio_write_folio+0x1250/0x2ad0
+[  311.965532][ T5388]  ext4_do_writepages+0x3c5d/0x69b0
+[  311.970900][ T5388]  ext4_writepages+0x30c/0x810
+[  311.975802][ T5388]  do_writepages+0x428/0x870
+[  311.980595][ T5388]  filemap_fdatawrite_wbc+0x1d8/0x270
+[  311.986134][ T5388]  file_write_and_wait_range+0x205/0x3a0
+[  311.991921][ T5388]  ext4_sync_file+0x1f9/0x14e0
+[  311.996861][ T5388]  vfs_fsync_range+0x1fd/0x250
+[  312.001771][ T5388]  ext4_buffered_write_iter+0xb16/0xbe0
+[  312.007499][ T5388]  ext4_file_write_iter+0x2365/0x3400
+[  312.013038][ T5388]  __kernel_write_iter+0x323/0x930
+[  312.018330][ T5388]  dump_user_range+0x593/0xce0
+[  312.023269][ T5388]  elf_core_dump+0x59e8/0x5c60
+[  312.028191][ T5388]  do_coredump+0x31e1/0x4820
+[  312.032961][ T5388]  get_signal+0x2185/0x2bc0
+[  312.037614][ T5388]  arch_do_signal_or_restart+0x4f/0x920
+[  312.043836][ T5388]  exit_to_user_mode_loop+0xe8/0x320
+[  312.049316][ T5388]  exit_to_user_mode_prepare+0x163/0x220
+[  312.055228][ T5388]  irqentry_exit_to_user_mode+0xd/0x20
+[  312.060930][ T5388]  irqentry_exit+0x16/0x40
+[  312.065532][ T5388]  exc_page_fault+0x5a5/0x740
+[  312.070485][ T5388]  asm_exc_page_fault+0x2b/0x30
+[  312.075545][ T5388] 
+[  312.077939][ T5388] Uninit was stored to memory at:
+[  312.083173][ T5388]  xts_xor_tweak+0x454/0xbe0
+[  312.087940][ T5388]  xts_encrypt+0x296/0x540
+[  312.092528][ T5388]  crypto_skcipher_encrypt+0xe0/0x150
+[  312.098062][ T5388]  fscrypt_crypt_block+0x52c/0x900
+[  312.103330][ T5388]  fscrypt_encrypt_pagecache_blocks+0x3e7/0x8b0
+[  312.109740][ T5388]  ext4_bio_write_folio+0x1250/0x2ad0
+[  312.115300][ T5388]  ext4_do_writepages+0x3c5d/0x69b0
+[  312.120679][ T5388]  ext4_writepages+0x30c/0x810
+[  312.125580][ T5388]  do_writepages+0x428/0x870
+[  312.130355][ T5388]  filemap_fdatawrite_wbc+0x1d8/0x270
+[  312.135866][ T5388]  file_write_and_wait_range+0x205/0x3a0
+[  312.141648][ T5388]  ext4_sync_file+0x1f9/0x14e0
+[  312.146741][ T5388]  vfs_fsync_range+0x1fd/0x250
+[  312.151674][ T5388]  ext4_buffered_write_iter+0xb16/0xbe0
+[  312.157672][ T5388]  ext4_file_write_iter+0x2365/0x3400
+[  312.163216][ T5388]  __kernel_write_iter+0x323/0x930
+[  312.168514][ T5388]  dump_user_range+0x593/0xce0
+[  312.173451][ T5388]  elf_core_dump+0x59e8/0x5c60
+[  312.178369][ T5388]  do_coredump+0x31e1/0x4820
+[  312.183136][ T5388]  get_signal+0x2185/0x2bc0
+[  312.187811][ T5388]  arch_do_signal_or_restart+0x4f/0x920
+[  312.193568][ T5388]  exit_to_user_mode_loop+0xe8/0x320
+[  312.199047][ T5388]  exit_to_user_mode_prepare+0x163/0x220
+[  312.204885][ T5388]  irqentry_exit_to_user_mode+0xd/0x20
+[  312.210642][ T5388]  irqentry_exit+0x16/0x40
+[  312.215241][ T5388]  exc_page_fault+0x5a5/0x740
+[  312.220106][ T5388]  asm_exc_page_fault+0x2b/0x30
+[  312.225103][ T5388] 
+[  312.227500][ T5388] Uninit was created at:
+[  312.231956][ T5388]  __alloc_pages+0x9a4/0xe00
+[  312.236757][ T5388]  alloc_pages+0xd01/0x1040
+[  312.241443][ T5388]  folio_alloc+0x42/0x120
+[  312.245942][ T5388]  filemap_alloc_folio+0xa5/0x430
+[  312.251122][ T5388]  __filemap_get_folio+0x908/0x13a0
+[  312.256494][ T5388]  ext4_write_begin+0x3e5/0x2220
+[  312.261662][ T5388]  ext4_da_write_begin+0x4cd/0xec0
+[  312.266920][ T5388]  generic_perform_write+0x3df/0xbb0
+[  312.272368][ T5388]  ext4_buffered_write_iter+0x5ec/0xbe0
+[  312.278079][ T5388]  ext4_file_write_iter+0x2365/0x3400
+[  312.283607][ T5388]  __kernel_write_iter+0x323/0x930
+[  312.288919][ T5388]  dump_user_range+0x593/0xce0
+[  312.293866][ T5388]  elf_core_dump+0x59e8/0x5c60
+[  312.298791][ T5388]  do_coredump+0x31e1/0x4820
+[  312.303740][ T5388]  get_signal+0x2185/0x2bc0
+[  312.308404][ T5388]  arch_do_signal_or_restart+0x4f/0x920
+[  312.314128][ T5388]  exit_to_user_mode_loop+0xe8/0x320
+[  312.319610][ T5388]  exit_to_user_mode_prepare+0x163/0x220
+[  312.325449][ T5388]  irqentry_exit_to_user_mode+0xd/0x20
+[  312.331544][ T5388]  irqentry_exit+0x16/0x40
+[  312.336124][ T5388]  exc_page_fault+0x5a5/0x740
+[  312.340963][ T5388]  asm_exc_page_fault+0x2b/0x30
+[  312.346047][ T5388] 
+[  312.348435][ T5388] CPU: 1 PID: 5388 Comm: syz-executor.3 Not tainted 6.4.0-rc3-syzkaller-gf93f2feda5d6 #0
+[  312.358397][ T5388] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
+[  312.368575][ T5388] =====================================================
diff --git a/pkg/report/testdata/linux/report/700 b/pkg/report/testdata/linux/report/700
new file mode 100644
index 000000000..1abfba7b5
--- /dev/null
+++ b/pkg/report/testdata/linux/report/700
@@ -0,0 +1,51 @@
+TITLE: KMSAN: uninit-value in virtqueue_add
+ALT: KMSAN origin in ext4_da_write_begin
+ALT: bad-access in virtqueue_add
+
+[  897.203644][ T1083] =====================================================
+[  897.210960][ T1083] BUG: KMSAN: uninit-value in virtqueue_add+0x20e2/0x60f0
+[  897.218269][ T1083]  virtqueue_add+0x20e2/0x60f0
+[  897.223210][ T1083]  virtqueue_add_sgs+0x186/0x1a0
+[  897.228331][ T1083]  virtscsi_add_cmd+0x838/0xad0
+[  897.233399][ T1083]  virtscsi_queuecommand+0x895/0xa60
+[  897.238953][ T1083]  scsi_queue_rq+0x4931/0x5680
+[  897.243961][ T1083]  blk_mq_dispatch_rq_list+0x1184/0x39c0
+[  897.249850][ T1083]  __blk_mq_sched_dispatch_requests+0x1234/0x2670
+[  897.254274][T12093] 8021q: adding VLAN 0 to HW filter on device bond3
+[  897.256473][ T1083]  blk_mq_sched_dispatch_requests+0x15d/0x2c0
+[  897.269363][ T1083]  blk_mq_run_work_fn+0xd0/0x280
+[  897.274520][ T1083]  process_one_work+0xb0d/0x1410
+[  897.279631][ T1083]  worker_thread+0x107e/0x1d60
+[  897.284574][ T1083]  kthread+0x3e8/0x540
+[  897.288838][ T1083]  ret_from_fork+0x1f/0x30
+[  897.293448][ T1083] 
+[  897.295857][ T1083] Uninit was created at:
+[  897.300327][ T1083]  __alloc_pages+0x9a4/0xe00
+[  897.305101][ T1083]  alloc_pages+0xd01/0x1040
+[  897.309775][ T1083]  folio_alloc+0x42/0x120
+[  897.314272][ T1083]  filemap_alloc_folio+0xa5/0x430
+[  897.319447][ T1083]  __filemap_get_folio+0x908/0x13a0
+[  897.324796][ T1083]  ext4_da_write_begin+0x7f8/0xec0
+[  897.330056][ T1083]  generic_perform_write+0x3df/0xbb0
+[  897.335517][ T1083]  ext4_buffered_write_iter+0x5ec/0xbe0
+[  897.341253][ T1083]  ext4_file_write_iter+0x2365/0x3400
+[  897.346786][ T1083]  __kernel_write_iter+0x323/0x930
+[  897.352106][ T1083]  dump_user_range+0x593/0xce0
+[  897.357049][ T1083]  elf_core_dump+0x59e8/0x5c60
+[  897.362000][ T1083]  do_coredump+0x32c8/0x4910
+[  897.367050][ T1083]  get_signal+0x2185/0x2bc0
+[  897.371757][ T1083]  arch_do_signal_or_restart+0x4f/0x920
+[  897.377514][ T1083]  exit_to_user_mode_loop+0xe8/0x320
+[  897.382999][ T1083]  exit_to_user_mode_prepare+0x163/0x220
+[  897.388832][ T1083]  irqentry_exit_to_user_mode+0xd/0x20
+[  897.394445][ T1083]  irqentry_exit+0x16/0x40
+[  897.398989][ T1083]  exc_page_fault+0x5a5/0x740
+[  897.403853][ T1083]  asm_exc_page_fault+0x2b/0x30
+[  897.408875][ T1083] 
+[  897.411287][ T1083] Bytes 0-4095 of 4096 are uninitialized
+[  897.417019][ T1083] Memory access of size 4096 starts at ffff88813ebe8000
+[  897.424064][ T1083] 
+[  897.426466][ T1083] CPU: 1 PID: 1083 Comm: kworker/1:1H Not tainted 6.4.0-syzkaller-g257152fe29be #0
+[  897.435948][ T1083] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
+[  897.446155][ T1083] Workqueue: kblockd blk_mq_run_work_fn
+[  897.451911][ T1083] =====================================================
diff --git a/pkg/report/testdata/linux/report/701 b/pkg/report/testdata/linux/report/701
new file mode 100644
index 000000000..a12d3869c
--- /dev/null
+++ b/pkg/report/testdata/linux/report/701
@@ -0,0 +1,50 @@
+TITLE: KMSAN: uninit-value in btrfs_bin_search
+ALT: KMSAN origin in alloc_extent_buffer
+ALT: bad-access in btrfs_bin_search
+
+[  343.493742][ T5647] =====================================================
+[  343.504878][ T5647] BUG: KMSAN: uninit-value in btrfs_bin_search+0x74c/0xb30
+[  343.512398][ T5647]  btrfs_bin_search+0x74c/0xb30
+[  343.517419][ T5647]  btrfs_search_slot+0x1a7e/0x4380
+[  343.522920][ T5647]  btrfs_insert_empty_items+0xb3/0x220
+[  343.533629][ T5647]  btrfs_create_new_inode+0x188e/0x3d30
+[  343.539373][ T5647]  btrfs_create_common+0x267/0x3b0
+[  343.545492][ T5647]  btrfs_create+0x16b/0x210
+[  343.550222][ T5647]  path_openat+0x2c9f/0x5a00
+[  343.555132][ T5647]  do_filp_open+0x20d/0x590
+[  343.559801][ T5647]  do_sys_openat2+0x1e9/0x8a0
+[  343.564834][ T5647]  __ia32_compat_sys_open+0x26c/0x2c0
+[  343.570406][ T5647]  __do_fast_syscall_32+0xa2/0x100
+[  343.575896][ T5647]  do_fast_syscall_32+0x37/0x80
+[  343.580961][ T5647]  do_SYSENTER_32+0x1f/0x30
+[  343.585826][ T5647]  entry_SYSENTER_compat_after_hwframe+0x70/0x82
+[  343.592581][ T5647] 
+[  343.594982][ T5647] Uninit was created at:
+[  343.599545][ T5647]  __alloc_pages+0x9a4/0xe00
+[  343.604450][ T5647]  alloc_pages+0xd01/0x1040
+[  343.609127][ T5647]  folio_alloc+0x42/0x120
+[  343.613794][ T5647]  filemap_alloc_folio+0xa5/0x430
+[  343.618978][ T5647]  __filemap_get_folio+0x908/0x13a0
+[  343.624491][ T5647]  pagecache_get_page+0x4e/0x200
+[  343.629596][ T5647]  alloc_extent_buffer+0x725/0x3130
+[  343.635150][ T5647]  btrfs_find_create_tree_block+0x46/0x60
+[  343.641046][ T5647]  btrfs_alloc_tree_block+0x344/0x1d20
+[  343.646850][ T5647]  __btrfs_cow_block+0x562/0x1d50
+[  343.652064][ T5647]  btrfs_cow_block+0x7cc/0xa00
+[  343.657182][ T5647]  btrfs_search_slot+0x169d/0x4380
+[  343.662605][ T5647]  btrfs_insert_empty_items+0xb3/0x220
+[  343.668276][ T5647]  btrfs_create_new_inode+0x188e/0x3d30
+[  343.674209][ T5647]  btrfs_create_common+0x267/0x3b0
+[  343.679522][ T5647]  btrfs_create+0x16b/0x210
+[  343.684355][ T5647]  path_openat+0x2c9f/0x5a00
+[  343.689111][ T5647]  do_filp_open+0x20d/0x590
+[  343.693940][ T5647]  do_sys_openat2+0x1e9/0x8a0
+[  343.698823][ T5647]  __ia32_compat_sys_open+0x26c/0x2c0
+[  343.704605][ T5647]  __do_fast_syscall_32+0xa2/0x100
+[  343.709914][ T5647]  do_fast_syscall_32+0x37/0x80
+[  343.715106][ T5647]  do_SYSENTER_32+0x1f/0x30
+[  343.719791][ T5647]  entry_SYSENTER_compat_after_hwframe+0x70/0x82
+[  343.726493][ T5647] 
+[  343.728998][ T5647] CPU: 0 PID: 5647 Comm: syz-executor.3 Not tainted 6.4.0-syzkaller-g257152fe29be #0
+[  343.738795][ T5647] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
+[  343.749083][ T5647] =====================================================
diff --git a/pkg/report/testdata/linux/report/702 b/pkg/report/testdata/linux/report/702
new file mode 100644
index 000000000..143ae90b9
--- /dev/null
+++ b/pkg/report/testdata/linux/report/702
@@ -0,0 +1,62 @@
+TITLE: KMSAN: uninit-value in post_read_mst_fixup
+ALT: KMSAN origin in map_mft_record
+ALT: bad-access in post_read_mst_fixup
+
+[  355.605345][ T5697] =====================================================
+[  355.612721][ T5697] BUG: KMSAN: uninit-value in post_read_mst_fixup+0xab8/0xb70
+[  355.623940][ T5697]  post_read_mst_fixup+0xab8/0xb70
+[  355.629281][ T5697]  ntfs_end_buffer_async_read+0xe53/0x1820
+[  355.645706][ T5697]  end_bio_bh_io_sync+0x130/0x1d0
+[  355.650946][ T5697]  bio_endio+0xb17/0xb70
+[  355.655617][ T5697]  submit_bio_noacct+0x47d/0x2380
+[  355.660893][ T5697]  submit_bio+0x171/0x1c0
+[  355.665546][ T5697]  submit_bh_wbc+0x775/0x7e0
+[  355.670377][ T5697]  submit_bh+0x26/0x30
+[  355.674786][ T5697]  ntfs_read_folio+0x39d8/0x3ee0
+[  355.679956][ T5697]  filemap_read_folio+0xc7/0x360
+[  355.685232][ T5697]  do_read_cache_folio+0x6ad/0xc10
+[  355.690555][ T5697]  read_cache_page+0x63/0x210
+[  355.695570][ T5697]  map_mft_record+0x28b/0xe40
+[  355.695694][ T5697]  ntfs_read_locked_inode+0x355/0x58a0
+[  355.715087][ T5697]  ntfs_read_inode_mount+0x1b03/0x3640
+[  355.720795][ T5697]  ntfs_fill_super+0x2c43/0x45d0
+[  355.726760][ T5697]  mount_bdev+0x4e1/0x7f0
+[  355.731446][ T5697]  ntfs_mount+0x4d/0x60
+[  355.735912][ T5697]  legacy_get_tree+0x110/0x290
+[  355.740895][ T5697]  vfs_get_tree+0xa5/0x500
+[  355.745625][ T5697]  do_new_mount+0x68d/0x1540
+[  355.750425][ T5697]  path_mount+0x725/0x1ee0
+[  355.755141][ T5697]  __se_sys_mount+0x725/0x810
+[  355.760036][ T5697]  __ia32_sys_mount+0xe3/0x150
+[  355.765112][ T5697]  __do_fast_syscall_32+0xa2/0x100
+[  355.770499][ T5697]  do_fast_syscall_32+0x37/0x80
+[  355.775677][ T5697]  do_SYSENTER_32+0x1f/0x30
+[  355.780485][ T5697]  entry_SYSENTER_compat_after_hwframe+0x70/0x82
+[  355.787250][ T5697] 
+[  355.789676][ T5697] Uninit was created at:
+[  355.794296][ T5697]  __alloc_pages+0x9a4/0xe00
+[  355.799125][ T5697]  alloc_pages+0xd01/0x1040
+[  355.803947][ T5697]  folio_alloc+0x42/0x120
+[  355.808493][ T5697]  filemap_alloc_folio+0xa5/0x430
+[  355.813824][ T5697]  do_read_cache_folio+0x14b/0xc10
+[  355.819144][ T5697]  read_cache_page+0x63/0x210
+[  355.824139][ T5697]  map_mft_record+0x28b/0xe40
+[  355.829027][ T5697]  ntfs_read_locked_inode+0x355/0x58a0
+[  355.834784][ T5697]  ntfs_read_inode_mount+0x1b03/0x3640
+[  355.840455][ T5697]  ntfs_fill_super+0x2c43/0x45d0
+[  355.845714][ T5697]  mount_bdev+0x4e1/0x7f0
+[  355.850247][ T5697]  ntfs_mount+0x4d/0x60
+[  355.854719][ T5697]  legacy_get_tree+0x110/0x290
+[  355.859711][ T5697]  vfs_get_tree+0xa5/0x500
+[  355.864447][ T5697]  do_new_mount+0x68d/0x1540
+[  355.864564][ T5697]  path_mount+0x725/0x1ee0
+[  355.883761][ T5697]  __se_sys_mount+0x725/0x810
+[  355.888657][ T5697]  __ia32_sys_mount+0xe3/0x150
+[  355.893735][ T5697]  __do_fast_syscall_32+0xa2/0x100
+[  355.899074][ T5697]  do_fast_syscall_32+0x37/0x80
+[  355.904247][ T5697]  do_SYSENTER_32+0x1f/0x30
+[  355.908985][ T5697]  entry_SYSENTER_compat_after_hwframe+0x70/0x82
+[  355.915668][ T5697] 
+[  355.918097][ T5697] CPU: 0 PID: 5697 Comm: syz-executor.5 Not tainted 6.4.0-rc4-syzkaller-g2741f1b02117 #0
+[  355.928237][ T5697] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
+[  355.938565][ T5697] =====================================================
diff --git a/pkg/report/testdata/linux/report/703 b/pkg/report/testdata/linux/report/703
new file mode 100644
index 000000000..e83e75f1e
--- /dev/null
+++ b/pkg/report/testdata/linux/report/703
@@ -0,0 +1,44 @@
+TITLE: KMSAN: uninit-value in nilfs_add_checksums_on_logs
+ALT: KMSAN origin in block_write_begin
+ALT: bad-access in nilfs_add_checksums_on_logs
+
+[  417.716144][ T7542] =====================================================
+[  417.723574][ T7542] BUG: KMSAN: uninit-value in crc32_le_base+0x43c/0xd80
+[  417.730751][ T7542]  crc32_le_base+0x43c/0xd80
+[  417.736320][ T7542]  nilfs_add_checksums_on_logs+0xb2c/0xe70
+[  417.742485][ T7542]  nilfs_segctor_do_construct+0x9d40/0xde70
+[  417.748637][ T7542]  nilfs_segctor_construct+0x1eb/0xe30
+[  417.754533][ T7542]  nilfs_segctor_thread+0xc3f/0x11d0
+[  417.759973][ T7542]  kthread+0x3e8/0x540
+[  417.764376][ T7542]  ret_from_fork+0x1f/0x30
+[  417.768957][ T7542] 
+[  417.771436][ T7542] Uninit was created at:
+[  417.776266][ T7542]  __alloc_pages+0x9a4/0xe00
+[  417.781139][ T7542]  alloc_pages+0xd01/0x1040
+[  417.786289][ T7542]  folio_alloc+0x42/0x120
+[  417.790797][ T7542]  filemap_alloc_folio+0xa5/0x430
+[  417.796243][ T7542]  __filemap_get_folio+0x908/0x13a0
+[  417.801608][ T7542]  pagecache_get_page+0x4e/0x200
+[  417.806790][ T7542]  grab_cache_page_write_begin+0x55/0x70
+[  417.812679][ T7542]  block_write_begin+0x4f/0x450
+[  417.817709][ T7542]  nilfs_write_begin+0xfc/0x200
+[  417.823019][ T7542]  generic_perform_write+0x3df/0xbb0
+[  417.828552][ T7542]  __generic_file_write_iter+0x393/0x920
+[  417.834517][ T7542]  generic_file_write_iter+0x103/0x5b0
+[  417.840153][ T7542]  __kernel_write_iter+0x323/0x930
+[  417.846023][ T7542]  dump_user_range+0x593/0xce0
+[  417.850960][ T7542]  elf_core_dump+0x59e8/0x5c60
+[  417.856061][ T7542]  do_coredump+0x31e1/0x4820
+[  417.860947][ T7542]  get_signal+0x2185/0x2bc0
+[  417.865727][ T7542]  arch_do_signal_or_restart+0x4f/0x920
+[  417.871477][ T7542]  exit_to_user_mode_loop+0xe8/0x320
+[  417.877416][ T7542]  exit_to_user_mode_prepare+0x163/0x220
+[  417.883609][ T7542]  syscall_exit_to_user_mode+0x2a/0x140
+[  417.889495][ T7542]  __do_fast_syscall_32+0xb1/0x100
+[  417.894973][ T7542]  do_fast_syscall_32+0x37/0x80
+[  417.900003][ T7542]  do_SYSENTER_32+0x1f/0x30
+[  417.904770][ T7542]  entry_SYSENTER_compat_after_hwframe+0x70/0x82
+[  417.911371][ T7542] 
+[  417.913864][ T7542] CPU: 0 PID: 7542 Comm: segctord Not tainted 6.4.0-rc4-syzkaller-g2741f1b02117 #0
+[  417.923920][ T7542] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
+[  417.934289][ T7542] =====================================================