KASAN: slab-out-of-bounds Read in search_by_key
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syzbot
Mar 29, 2022, 1:22:26 PM3/29/22
to syzkaller-upst...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 34af78c4e616 Merge tag 'iommu-updates-v5.18' of git://git...
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1716e563700000
kernel config: https://syzkaller.appspot.com/x/.config?x=d3e0714fa48dfad9
dashboard link: https://syzkaller.appspot.com/bug?extid=f6cb857b38efeb27bb85
compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2
CC: [chouhan.sh...@gmail.com ja...@suse.cz linux-...@vger.kernel.org reiserf...@vger.kernel.org]
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f6cb85...@syzkaller.appspotmail.com
BFS-fs: bfs_fill_super(): loop2 is unclean, continuing
==================================================================
BUG: KASAN: slab-out-of-bounds in search_by_key+0x149/0x4600 fs/reiserfs/stree.c:632
Read of size 8 at addr ffff88801d8cc1f0 by task syz-executor.2/17598
CPU: 1 PID: 17598 Comm: syz-executor.2 Tainted: G W 5.17.0-syzkaller-09727-g34af78c4e616 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
print_address_description+0x64/0x400 mm/kasan/report.c:247
__kasan_report mm/kasan/report.c:434 [inline]
kasan_report+0x19a/0x1f0 mm/kasan/report.c:451
search_by_key+0x149/0x4600 fs/reiserfs/stree.c:632
search_by_entry_key+0x32/0x1360 fs/reiserfs/namei.c:125
reiserfs_readdir_inode+0x29a/0x1400 fs/reiserfs/dir.c:98
iterate_dir+0x2aa/0x640
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64+0x1ea/0x4e0 fs/readdir.c:354
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+0x44/0xae
RIP: 0033:0x7ff511689049
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff51279d168 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007ff51179bf60 RCX: 00007ff511689049
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007ff5116e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdfc6057bf R14: 00007ff51279d300 R15: 0000000000022000
</TASK>
Allocated by task 17598:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:436 [inline]
____kasan_kmalloc+0xdc/0x110 mm/kasan/common.c:515
kasan_kmalloc include/linux/kasan.h:249 [inline]
kmem_cache_alloc_trace+0x9d/0x330 mm/slub.c:3258
kmalloc include/linux/slab.h:581 [inline]
kzalloc include/linux/slab.h:714 [inline]
bfs_fill_super+0x59/0xe20 fs/bfs/inode.c:321
mount_bdev+0x26c/0x3a0 fs/super.c:1367
legacy_get_tree+0xea/0x180 fs/fs_context.c:610
vfs_get_tree+0x86/0x270 fs/super.c:1497
do_new_mount fs/namespace.c:3039 [inline]
path_mount+0x1986/0x2c30 fs/namespace.c:3369
do_mount fs/namespace.c:3382 [inline]
__do_sys_mount fs/namespace.c:3590 [inline]
__se_sys_mount+0x308/0x3c0 fs/namespace.c:3567
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+0x44/0xae
Last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
__kasan_record_aux_stack+0xb2/0xc0 mm/kasan/generic.c:348
kvfree_call_rcu+0x119/0x880 kernel/rcu/tree.c:3595
drop_sysctl_table+0x2cd/0x400 fs/proc/proc_sysctl.c:1705
unregister_sysctl_table+0x86/0x130 fs/proc/proc_sysctl.c:1743
mptcp_pernet_del_table net/mptcp/ctrl.c:151 [inline]
mptcp_net_exit+0x59/0x70 net/mptcp/ctrl.c:181
ops_exit_list net/core/net_namespace.c:162 [inline]
cleanup_net+0x758/0xc70 net/core/net_namespace.c:594
process_one_work+0x83c/0x11a0 kernel/workqueue.c:2289
worker_thread+0xa6c/0x1290 kernel/workqueue.c:2436
kthread+0x2a3/0x2d0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Second to last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
__kasan_record_aux_stack+0xb2/0xc0 mm/kasan/generic.c:348
kvfree_call_rcu+0x119/0x880 kernel/rcu/tree.c:3595
drop_sysctl_table+0x2cd/0x400 fs/proc/proc_sysctl.c:1705
drop_sysctl_table+0x2eb/0x400 fs/proc/proc_sysctl.c:1708
unregister_sysctl_table+0x86/0x130 fs/proc/proc_sysctl.c:1743
__devinet_sysctl_unregister net/ipv4/devinet.c:2611 [inline]
devinet_sysctl_unregister net/ipv4/devinet.c:2639 [inline]
inetdev_destroy net/ipv4/devinet.c:327 [inline]
inetdev_event+0x71d/0x1410 net/ipv4/devinet.c:1604
notifier_call_chain kernel/notifier.c:84 [inline]
raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:392
call_netdevice_notifiers_info net/core/dev.c:1938 [inline]
call_netdevice_notifiers_extack net/core/dev.c:1976 [inline]
call_netdevice_notifiers net/core/dev.c:1990 [inline]
unregister_netdevice_many+0xefe/0x1960 net/core/dev.c:10741
sit_exit_batch_net+0x495/0x4e0 net/ipv6/sit.c:1950
ops_exit_list net/core/net_namespace.c:167 [inline]
cleanup_net+0x80c/0xc70 net/core/net_namespace.c:594
process_one_work+0x83c/0x11a0 kernel/workqueue.c:2289
worker_thread+0xa6c/0x1290 kernel/workqueue.c:2436
kthread+0x2a3/0x2d0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
The buggy address belongs to the object at ffff88801d8cc000
which belongs to the cache kmalloc-256 of size 256
The buggy address is located 240 bytes to the right of
256-byte region [ffff88801d8cc000, ffff88801d8cc100)
The buggy address belongs to the page:
page:ffffea0000763300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1d8cc
head:ffffea0000763300 order:1 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea00007a0a80 dead000000000002 ffff888011441b40
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0x1d2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 8140, ts 334057080160, free_ts 296363084026
prep_new_page mm/page_alloc.c:2382 [inline]
get_page_from_freelist+0x708/0xa80 mm/page_alloc.c:4123
__alloc_pages+0x255/0x580 mm/page_alloc.c:5349
alloc_slab_page+0x70/0xf0 mm/slub.c:1799
allocate_slab+0x5d/0x380 mm/slub.c:1944
new_slab mm/slub.c:2004 [inline]
___slab_alloc+0x40e/0xcc0 mm/slub.c:3005
__slab_alloc mm/slub.c:3092 [inline]
slab_alloc_node mm/slub.c:3183 [inline]
slab_alloc mm/slub.c:3225 [inline]
kmem_cache_alloc_trace+0x28c/0x330 mm/slub.c:3256
kmalloc include/linux/slab.h:581 [inline]
kzalloc include/linux/slab.h:714 [inline]
smk_fetch security/smack/smack_lsm.c:290 [inline]
smack_d_instantiate+0x65d/0xd10 security/smack/smack_lsm.c:3416
security_d_instantiate+0xa5/0x100 security/security.c:2056
d_instantiate+0x51/0x90 fs/dcache.c:2034
shmem_mknod+0x165/0x1b0 mm/shmem.c:2828
lookup_open fs/namei.c:3330 [inline]
open_last_lookups fs/namei.c:3400 [inline]
path_openat+0x12ec/0x36a0 fs/namei.c:3606
do_filp_open+0x277/0x4f0 fs/namei.c:3636
do_sys_openat2+0x13b/0x500 fs/open.c:1214
do_sys_open fs/open.c:1230 [inline]
__do_sys_openat fs/open.c:1246 [inline]
__se_sys_openat fs/open.c:1241 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1241
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+0x44/0xae
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1348 [inline]
free_pcp_prepare+0xcbd/0xec0 mm/page_alloc.c:1400
free_unref_page_prepare mm/page_alloc.c:3269 [inline]
free_unref_page+0x7d/0x580 mm/page_alloc.c:3364
__vunmap+0x8cd/0xa90 mm/vmalloc.c:2656
do_free_pages sound/core/pcm_memory.c:65 [inline]
snd_pcm_lib_free_pages+0x1f1/0x2b0 sound/core/pcm_memory.c:466
do_hw_free sound/core/pcm_native.c:856 [inline]
snd_pcm_release_substream+0x489/0x6d0 sound/core/pcm_native.c:2679
snd_pcm_oss_release_file sound/core/oss/pcm_oss.c:2413 [inline]
snd_pcm_oss_release+0x1a3/0x270 sound/core/oss/pcm_oss.c:2592
__fput+0x3fc/0x870 fs/file_table.c:317
task_work_run+0x146/0x1c0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:188 [inline]
exit_to_user_mode_loop kernel/entry/common.c:190 [inline]
exit_to_user_mode_prepare+0x1dd/0x200 kernel/entry/common.c:222
__syscall_exit_to_user_mode_work kernel/entry/common.c:304 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:315
entry_SYSCALL_64_after_hwframe+0x44/0xae
Memory state around the buggy address:
ffff88801d8cc080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff88801d8cc100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88801d8cc180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff88801d8cc200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff88801d8cc280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 34af78c4e616 Merge tag 'iommu-updates-v5.18' of git://git...
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1716e563700000
kernel config: https://syzkaller.appspot.com/x/.config?x=d3e0714fa48dfad9
dashboard link: https://syzkaller.appspot.com/bug?extid=f6cb857b38efeb27bb85
compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2
CC: [chouhan.sh...@gmail.com ja...@suse.cz linux-...@vger.kernel.org reiserf...@vger.kernel.org]
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f6cb85...@syzkaller.appspotmail.com
BFS-fs: bfs_fill_super(): loop2 is unclean, continuing
==================================================================
BUG: KASAN: slab-out-of-bounds in search_by_key+0x149/0x4600 fs/reiserfs/stree.c:632
Read of size 8 at addr ffff88801d8cc1f0 by task syz-executor.2/17598
CPU: 1 PID: 17598 Comm: syz-executor.2 Tainted: G W 5.17.0-syzkaller-09727-g34af78c4e616 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
print_address_description+0x64/0x400 mm/kasan/report.c:247
__kasan_report mm/kasan/report.c:434 [inline]
kasan_report+0x19a/0x1f0 mm/kasan/report.c:451
search_by_key+0x149/0x4600 fs/reiserfs/stree.c:632
search_by_entry_key+0x32/0x1360 fs/reiserfs/namei.c:125
reiserfs_readdir_inode+0x29a/0x1400 fs/reiserfs/dir.c:98
iterate_dir+0x2aa/0x640
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64+0x1ea/0x4e0 fs/readdir.c:354
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+0x44/0xae
RIP: 0033:0x7ff511689049
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff51279d168 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007ff51179bf60 RCX: 00007ff511689049
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007ff5116e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdfc6057bf R14: 00007ff51279d300 R15: 0000000000022000
</TASK>
Allocated by task 17598:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:436 [inline]
____kasan_kmalloc+0xdc/0x110 mm/kasan/common.c:515
kasan_kmalloc include/linux/kasan.h:249 [inline]
kmem_cache_alloc_trace+0x9d/0x330 mm/slub.c:3258
kmalloc include/linux/slab.h:581 [inline]
kzalloc include/linux/slab.h:714 [inline]
bfs_fill_super+0x59/0xe20 fs/bfs/inode.c:321
mount_bdev+0x26c/0x3a0 fs/super.c:1367
legacy_get_tree+0xea/0x180 fs/fs_context.c:610
vfs_get_tree+0x86/0x270 fs/super.c:1497
do_new_mount fs/namespace.c:3039 [inline]
path_mount+0x1986/0x2c30 fs/namespace.c:3369
do_mount fs/namespace.c:3382 [inline]
__do_sys_mount fs/namespace.c:3590 [inline]
__se_sys_mount+0x308/0x3c0 fs/namespace.c:3567
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+0x44/0xae
Last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
__kasan_record_aux_stack+0xb2/0xc0 mm/kasan/generic.c:348
kvfree_call_rcu+0x119/0x880 kernel/rcu/tree.c:3595
drop_sysctl_table+0x2cd/0x400 fs/proc/proc_sysctl.c:1705
unregister_sysctl_table+0x86/0x130 fs/proc/proc_sysctl.c:1743
mptcp_pernet_del_table net/mptcp/ctrl.c:151 [inline]
mptcp_net_exit+0x59/0x70 net/mptcp/ctrl.c:181
ops_exit_list net/core/net_namespace.c:162 [inline]
cleanup_net+0x758/0xc70 net/core/net_namespace.c:594
process_one_work+0x83c/0x11a0 kernel/workqueue.c:2289
worker_thread+0xa6c/0x1290 kernel/workqueue.c:2436
kthread+0x2a3/0x2d0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Second to last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
__kasan_record_aux_stack+0xb2/0xc0 mm/kasan/generic.c:348
kvfree_call_rcu+0x119/0x880 kernel/rcu/tree.c:3595
drop_sysctl_table+0x2cd/0x400 fs/proc/proc_sysctl.c:1705
drop_sysctl_table+0x2eb/0x400 fs/proc/proc_sysctl.c:1708
unregister_sysctl_table+0x86/0x130 fs/proc/proc_sysctl.c:1743
__devinet_sysctl_unregister net/ipv4/devinet.c:2611 [inline]
devinet_sysctl_unregister net/ipv4/devinet.c:2639 [inline]
inetdev_destroy net/ipv4/devinet.c:327 [inline]
inetdev_event+0x71d/0x1410 net/ipv4/devinet.c:1604
notifier_call_chain kernel/notifier.c:84 [inline]
raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:392
call_netdevice_notifiers_info net/core/dev.c:1938 [inline]
call_netdevice_notifiers_extack net/core/dev.c:1976 [inline]
call_netdevice_notifiers net/core/dev.c:1990 [inline]
unregister_netdevice_many+0xefe/0x1960 net/core/dev.c:10741
sit_exit_batch_net+0x495/0x4e0 net/ipv6/sit.c:1950
ops_exit_list net/core/net_namespace.c:167 [inline]
cleanup_net+0x80c/0xc70 net/core/net_namespace.c:594
process_one_work+0x83c/0x11a0 kernel/workqueue.c:2289
worker_thread+0xa6c/0x1290 kernel/workqueue.c:2436
kthread+0x2a3/0x2d0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
The buggy address belongs to the object at ffff88801d8cc000
which belongs to the cache kmalloc-256 of size 256
The buggy address is located 240 bytes to the right of
256-byte region [ffff88801d8cc000, ffff88801d8cc100)
The buggy address belongs to the page:
page:ffffea0000763300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1d8cc
head:ffffea0000763300 order:1 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea00007a0a80 dead000000000002 ffff888011441b40
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0x1d2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 8140, ts 334057080160, free_ts 296363084026
prep_new_page mm/page_alloc.c:2382 [inline]
get_page_from_freelist+0x708/0xa80 mm/page_alloc.c:4123
__alloc_pages+0x255/0x580 mm/page_alloc.c:5349
alloc_slab_page+0x70/0xf0 mm/slub.c:1799
allocate_slab+0x5d/0x380 mm/slub.c:1944
new_slab mm/slub.c:2004 [inline]
___slab_alloc+0x40e/0xcc0 mm/slub.c:3005
__slab_alloc mm/slub.c:3092 [inline]
slab_alloc_node mm/slub.c:3183 [inline]
slab_alloc mm/slub.c:3225 [inline]
kmem_cache_alloc_trace+0x28c/0x330 mm/slub.c:3256
kmalloc include/linux/slab.h:581 [inline]
kzalloc include/linux/slab.h:714 [inline]
smk_fetch security/smack/smack_lsm.c:290 [inline]
smack_d_instantiate+0x65d/0xd10 security/smack/smack_lsm.c:3416
security_d_instantiate+0xa5/0x100 security/security.c:2056
d_instantiate+0x51/0x90 fs/dcache.c:2034
shmem_mknod+0x165/0x1b0 mm/shmem.c:2828
lookup_open fs/namei.c:3330 [inline]
open_last_lookups fs/namei.c:3400 [inline]
path_openat+0x12ec/0x36a0 fs/namei.c:3606
do_filp_open+0x277/0x4f0 fs/namei.c:3636
do_sys_openat2+0x13b/0x500 fs/open.c:1214
do_sys_open fs/open.c:1230 [inline]
__do_sys_openat fs/open.c:1246 [inline]
__se_sys_openat fs/open.c:1241 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1241
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+0x44/0xae
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1348 [inline]
free_pcp_prepare+0xcbd/0xec0 mm/page_alloc.c:1400
free_unref_page_prepare mm/page_alloc.c:3269 [inline]
free_unref_page+0x7d/0x580 mm/page_alloc.c:3364
__vunmap+0x8cd/0xa90 mm/vmalloc.c:2656
do_free_pages sound/core/pcm_memory.c:65 [inline]
snd_pcm_lib_free_pages+0x1f1/0x2b0 sound/core/pcm_memory.c:466
do_hw_free sound/core/pcm_native.c:856 [inline]
snd_pcm_release_substream+0x489/0x6d0 sound/core/pcm_native.c:2679
snd_pcm_oss_release_file sound/core/oss/pcm_oss.c:2413 [inline]
snd_pcm_oss_release+0x1a3/0x270 sound/core/oss/pcm_oss.c:2592
__fput+0x3fc/0x870 fs/file_table.c:317
task_work_run+0x146/0x1c0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:188 [inline]
exit_to_user_mode_loop kernel/entry/common.c:190 [inline]
exit_to_user_mode_prepare+0x1dd/0x200 kernel/entry/common.c:222
__syscall_exit_to_user_mode_work kernel/entry/common.c:304 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:315
entry_SYSCALL_64_after_hwframe+0x44/0xae
Memory state around the buggy address:
ffff88801d8cc080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff88801d8cc100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88801d8cc180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff88801d8cc200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff88801d8cc280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
---
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syzbot
Jun 23, 2022, 1:15:19 PM6/23/22
to syzkaller-upst...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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