* [syzbot] UBSAN: shift-out-of-bounds in gfs2_getbuf
@ 2022-10-13 13:31 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2022-10-13 13:31 UTC (permalink / raw)
To: agruenba, cluster-devel, linux-kernel, rpeterso, syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: 493ffd6605b2 Merge tag 'ucount-rlimits-cleanups-for-v5.19'..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14620252880000
kernel config: https://syzkaller.appspot.com/x/.config?x=d19f5d16783f901
dashboard link: https://syzkaller.appspot.com/bug?extid=87a187973530ac822e3c
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f1ff6481e26f/disk-493ffd66.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/101bd3c7ae47/vmlinux-493ffd66.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+87a187973530ac822e3c@syzkaller.appspotmail.com
================================================================================
UBSAN: shift-out-of-bounds in fs/gfs2/meta_io.c:128:16
shift exponent 4294967293 is too large for 64-bit type 'u64' (aka 'unsigned long long')
CPU: 0 PID: 10195 Comm: syz-executor.3 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_shift_out_of_bounds+0x33d/0x3b0 lib/ubsan.c:322
gfs2_getbuf+0x759/0x7d0 fs/gfs2/meta_io.c:128
gfs2_meta_read+0x153/0x910 fs/gfs2/meta_io.c:265
gfs2_meta_buffer+0x153/0x3a0 fs/gfs2/meta_io.c:491
gfs2_meta_inode_buffer fs/gfs2/meta_io.h:72 [inline]
gfs2_inode_refresh+0xab/0xe90 fs/gfs2/glops.c:472
gfs2_instantiate+0x15e/0x220 fs/gfs2/glock.c:515
gfs2_glock_holder_ready fs/gfs2/glock.c:1303 [inline]
gfs2_glock_wait+0x1d9/0x2a0 fs/gfs2/glock.c:1323
gfs2_glock_nq_init fs/gfs2/glock.h:263 [inline]
gfs2_lookupi+0x40c/0x650 fs/gfs2/inode.c:306
gfs2_lookup_simple+0xec/0x170 fs/gfs2/inode.c:258
init_journal+0x19b/0x22c0 fs/gfs2/ops_fstype.c:739
init_inodes+0xdc/0x340 fs/gfs2/ops_fstype.c:882
gfs2_fill_super+0x1ad8/0x2610 fs/gfs2/ops_fstype.c:1240
get_tree_bdev+0x400/0x620 fs/super.c:1323
gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1323
vfs_get_tree+0x88/0x270 fs/super.c:1530
do_new_mount+0x289/0xad0 fs/namespace.c:3040
do_mount fs/namespace.c:3383 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3568
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f0eed68cada
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f0eee73cf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f0eed68cada
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f0eee73cfe0
RBP: 00007f0eee73d020 R08: 00007f0eee73d020 R09: 0000000020000000
R10: 0000000000000008 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f0eee73cfe0 R15: 0000000020000080
</TASK>
================================================================================
---
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 syzkaller@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Cluster-devel] [syzbot] UBSAN: shift-out-of-bounds in gfs2_getbuf
@ 2022-10-13 13:31 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2022-10-13 13:31 UTC (permalink / raw)
To: cluster-devel.redhat.com
Hello,
syzbot found the following issue on:
HEAD commit: 493ffd6605b2 Merge tag 'ucount-rlimits-cleanups-for-v5.19'..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14620252880000
kernel config: https://syzkaller.appspot.com/x/.config?x=d19f5d16783f901
dashboard link: https://syzkaller.appspot.com/bug?extid=87a187973530ac822e3c
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f1ff6481e26f/disk-493ffd66.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/101bd3c7ae47/vmlinux-493ffd66.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+87a187973530ac822e3c at syzkaller.appspotmail.com
================================================================================
UBSAN: shift-out-of-bounds in fs/gfs2/meta_io.c:128:16
shift exponent 4294967293 is too large for 64-bit type 'u64' (aka 'unsigned long long')
CPU: 0 PID: 10195 Comm: syz-executor.3 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_shift_out_of_bounds+0x33d/0x3b0 lib/ubsan.c:322
gfs2_getbuf+0x759/0x7d0 fs/gfs2/meta_io.c:128
gfs2_meta_read+0x153/0x910 fs/gfs2/meta_io.c:265
gfs2_meta_buffer+0x153/0x3a0 fs/gfs2/meta_io.c:491
gfs2_meta_inode_buffer fs/gfs2/meta_io.h:72 [inline]
gfs2_inode_refresh+0xab/0xe90 fs/gfs2/glops.c:472
gfs2_instantiate+0x15e/0x220 fs/gfs2/glock.c:515
gfs2_glock_holder_ready fs/gfs2/glock.c:1303 [inline]
gfs2_glock_wait+0x1d9/0x2a0 fs/gfs2/glock.c:1323
gfs2_glock_nq_init fs/gfs2/glock.h:263 [inline]
gfs2_lookupi+0x40c/0x650 fs/gfs2/inode.c:306
gfs2_lookup_simple+0xec/0x170 fs/gfs2/inode.c:258
init_journal+0x19b/0x22c0 fs/gfs2/ops_fstype.c:739
init_inodes+0xdc/0x340 fs/gfs2/ops_fstype.c:882
gfs2_fill_super+0x1ad8/0x2610 fs/gfs2/ops_fstype.c:1240
get_tree_bdev+0x400/0x620 fs/super.c:1323
gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1323
vfs_get_tree+0x88/0x270 fs/super.c:1530
do_new_mount+0x289/0xad0 fs/namespace.c:3040
do_mount fs/namespace.c:3383 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3568
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f0eed68cada
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f0eee73cf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f0eed68cada
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f0eee73cfe0
RBP: 00007f0eee73d020 R08: 00007f0eee73d020 R09: 0000000020000000
R10: 0000000000000008 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f0eee73cfe0 R15: 0000000020000080
</TASK>
================================================================================
---
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 syzkaller at googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Cluster-devel] [syzbot] UBSAN: shift-out-of-bounds in gfs2_getbuf
2022-10-13 13:31 ` [Cluster-devel] " syzbot
@ 2022-10-13 13:52 ` Andrew Price
-1 siblings, 0 replies; 6+ messages in thread
From: Andrew Price @ 2022-10-13 13:52 UTC (permalink / raw)
To: syzbot; +Cc: agruenba, cluster-devel, linux-kernel, rpeterso, syzkaller-bugs
On 13/10/2022 14:31, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 493ffd6605b2 Merge tag 'ucount-rlimits-cleanups-for-v5.19'..
$ git describe --contains 493ffd6605b2
next-20221011~172
> git tree: upstream
It would be useful to know the precise git tree.
> console output: https://syzkaller.appspot.com/x/log.txt?x=14620252880000
> kernel config: https://syzkaller.appspot.com/x/.config?x=d19f5d16783f901
> dashboard link: https://syzkaller.appspot.com/bug?extid=87a187973530ac822e3c
> compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
>
> Unfortunately, I don't have any reproducer for this issue yet.
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/f1ff6481e26f/disk-493ffd66.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/101bd3c7ae47/vmlinux-493ffd66.xz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+87a187973530ac822e3c@syzkaller.appspotmail.com
>
> ================================================================================
> UBSAN: shift-out-of-bounds in fs/gfs2/meta_io.c:128:16
shift = PAGE_SHIFT - sdp->sd_sb.sb_bsize_shift;
index = blkno >> shift; /* convert block to page */
bufnum = blkno - (index << shift); /* block buf index within
page */
So likely fixed by commit 670f8ce56dd0632dc29a0322e188cc73ce3c6b92
"gfs2: Check sb_bsize_shift after reading superblock" which has just
been merged into mainline, but doesn't appear in next-20221011~172
Andy
> shift exponent 4294967293 is too large for 64-bit type 'u64' (aka 'unsigned long long')
> CPU: 0 PID: 10195 Comm: syz-executor.3 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
> Call Trace:
> <TASK>
> __dump_stack lib/dump_stack.c:88 [inline]
> dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
> ubsan_epilogue lib/ubsan.c:151 [inline]
> __ubsan_handle_shift_out_of_bounds+0x33d/0x3b0 lib/ubsan.c:322
> gfs2_getbuf+0x759/0x7d0 fs/gfs2/meta_io.c:128
> gfs2_meta_read+0x153/0x910 fs/gfs2/meta_io.c:265
> gfs2_meta_buffer+0x153/0x3a0 fs/gfs2/meta_io.c:491
> gfs2_meta_inode_buffer fs/gfs2/meta_io.h:72 [inline]
> gfs2_inode_refresh+0xab/0xe90 fs/gfs2/glops.c:472
> gfs2_instantiate+0x15e/0x220 fs/gfs2/glock.c:515
> gfs2_glock_holder_ready fs/gfs2/glock.c:1303 [inline]
> gfs2_glock_wait+0x1d9/0x2a0 fs/gfs2/glock.c:1323
> gfs2_glock_nq_init fs/gfs2/glock.h:263 [inline]
> gfs2_lookupi+0x40c/0x650 fs/gfs2/inode.c:306
> gfs2_lookup_simple+0xec/0x170 fs/gfs2/inode.c:258
> init_journal+0x19b/0x22c0 fs/gfs2/ops_fstype.c:739
> init_inodes+0xdc/0x340 fs/gfs2/ops_fstype.c:882
> gfs2_fill_super+0x1ad8/0x2610 fs/gfs2/ops_fstype.c:1240
> get_tree_bdev+0x400/0x620 fs/super.c:1323
> gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1323
> vfs_get_tree+0x88/0x270 fs/super.c:1530
> do_new_mount+0x289/0xad0 fs/namespace.c:3040
> do_mount fs/namespace.c:3383 [inline]
> __do_sys_mount fs/namespace.c:3591 [inline]
> __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3568
> do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
> entry_SYSCALL_64_after_hwframe+0x63/0xcd
> RIP: 0033:0x7f0eed68cada
> Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f0eee73cf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
> RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f0eed68cada
> RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f0eee73cfe0
> RBP: 00007f0eee73d020 R08: 00007f0eee73d020 R09: 0000000020000000
> R10: 0000000000000008 R11: 0000000000000202 R12: 0000000020000000
> R13: 0000000020000100 R14: 00007f0eee73cfe0 R15: 0000000020000080
> </TASK>
> ================================================================================
>
>
> ---
> 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 syzkaller@googlegroups.com.
>
> syzbot will keep track of this issue. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Cluster-devel] [syzbot] UBSAN: shift-out-of-bounds in gfs2_getbuf
@ 2022-10-13 13:52 ` Andrew Price
0 siblings, 0 replies; 6+ messages in thread
From: Andrew Price @ 2022-10-13 13:52 UTC (permalink / raw)
To: cluster-devel.redhat.com
On 13/10/2022 14:31, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 493ffd6605b2 Merge tag 'ucount-rlimits-cleanups-for-v5.19'..
$ git describe --contains 493ffd6605b2
next-20221011~172
> git tree: upstream
It would be useful to know the precise git tree.
> console output: https://syzkaller.appspot.com/x/log.txt?x=14620252880000
> kernel config: https://syzkaller.appspot.com/x/.config?x=d19f5d16783f901
> dashboard link: https://syzkaller.appspot.com/bug?extid=87a187973530ac822e3c
> compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
>
> Unfortunately, I don't have any reproducer for this issue yet.
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/f1ff6481e26f/disk-493ffd66.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/101bd3c7ae47/vmlinux-493ffd66.xz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+87a187973530ac822e3c at syzkaller.appspotmail.com
>
> ================================================================================
> UBSAN: shift-out-of-bounds in fs/gfs2/meta_io.c:128:16
shift = PAGE_SHIFT - sdp->sd_sb.sb_bsize_shift;
index = blkno >> shift; /* convert block to page */
bufnum = blkno - (index << shift); /* block buf index within
page */
So likely fixed by commit 670f8ce56dd0632dc29a0322e188cc73ce3c6b92
"gfs2: Check sb_bsize_shift after reading superblock" which has just
been merged into mainline, but doesn't appear in next-20221011~172
Andy
> shift exponent 4294967293 is too large for 64-bit type 'u64' (aka 'unsigned long long')
> CPU: 0 PID: 10195 Comm: syz-executor.3 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
> Call Trace:
> <TASK>
> __dump_stack lib/dump_stack.c:88 [inline]
> dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
> ubsan_epilogue lib/ubsan.c:151 [inline]
> __ubsan_handle_shift_out_of_bounds+0x33d/0x3b0 lib/ubsan.c:322
> gfs2_getbuf+0x759/0x7d0 fs/gfs2/meta_io.c:128
> gfs2_meta_read+0x153/0x910 fs/gfs2/meta_io.c:265
> gfs2_meta_buffer+0x153/0x3a0 fs/gfs2/meta_io.c:491
> gfs2_meta_inode_buffer fs/gfs2/meta_io.h:72 [inline]
> gfs2_inode_refresh+0xab/0xe90 fs/gfs2/glops.c:472
> gfs2_instantiate+0x15e/0x220 fs/gfs2/glock.c:515
> gfs2_glock_holder_ready fs/gfs2/glock.c:1303 [inline]
> gfs2_glock_wait+0x1d9/0x2a0 fs/gfs2/glock.c:1323
> gfs2_glock_nq_init fs/gfs2/glock.h:263 [inline]
> gfs2_lookupi+0x40c/0x650 fs/gfs2/inode.c:306
> gfs2_lookup_simple+0xec/0x170 fs/gfs2/inode.c:258
> init_journal+0x19b/0x22c0 fs/gfs2/ops_fstype.c:739
> init_inodes+0xdc/0x340 fs/gfs2/ops_fstype.c:882
> gfs2_fill_super+0x1ad8/0x2610 fs/gfs2/ops_fstype.c:1240
> get_tree_bdev+0x400/0x620 fs/super.c:1323
> gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1323
> vfs_get_tree+0x88/0x270 fs/super.c:1530
> do_new_mount+0x289/0xad0 fs/namespace.c:3040
> do_mount fs/namespace.c:3383 [inline]
> __do_sys_mount fs/namespace.c:3591 [inline]
> __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3568
> do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
> entry_SYSCALL_64_after_hwframe+0x63/0xcd
> RIP: 0033:0x7f0eed68cada
> Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f0eee73cf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
> RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f0eed68cada
> RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f0eee73cfe0
> RBP: 00007f0eee73d020 R08: 00007f0eee73d020 R09: 0000000020000000
> R10: 0000000000000008 R11: 0000000000000202 R12: 0000000020000000
> R13: 0000000020000100 R14: 00007f0eee73cfe0 R15: 0000000020000080
> </TASK>
> ================================================================================
>
>
> ---
> 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 syzkaller at googlegroups.com.
>
> syzbot will keep track of this issue. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] UBSAN: shift-out-of-bounds in gfs2_getbuf
2022-10-13 13:31 ` [Cluster-devel] " syzbot
@ 2022-10-13 14:58 ` syzbot
-1 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2022-10-13 14:58 UTC (permalink / raw)
To: agruenba, anprice, cluster-devel, linux-kernel, rpeterso, syzkaller-bugs
syzbot has found a reproducer for the following issue on:
HEAD commit: 55be6084c8e0 Merge tag 'timers-core-2022-10-05' of git://g..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=176500c2880000
kernel config: https://syzkaller.appspot.com/x/.config?x=c29b6436e994d72e
dashboard link: https://syzkaller.appspot.com/bug?extid=87a187973530ac822e3c
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=174eb6aa880000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1118d5a4880000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/c8f5131ab57d/disk-55be6084.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/77167f226f35/vmlinux-55be6084.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/930c28d03062/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+87a187973530ac822e3c@syzkaller.appspotmail.com
loop0: detected capacity change from 0 to 264192
gfs2: fsid=loop0: Trying to join cluster "lock_nolock", "loop0"
gfs2: fsid=loop0: Now mounting FS (format 1801)...
================================================================================
UBSAN: shift-out-of-bounds in fs/gfs2/meta_io.c:128:16
shift exponent 4294967293 is too large for 64-bit type 'u64' (aka 'unsigned long long')
CPU: 1 PID: 3612 Comm: syz-executor373 Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_shift_out_of_bounds+0x3a6/0x420 lib/ubsan.c:322
gfs2_getbuf+0x759/0x7d0 fs/gfs2/meta_io.c:128
gfs2_meta_read+0x16a/0x910 fs/gfs2/meta_io.c:265
gfs2_meta_buffer+0x195/0x400 fs/gfs2/meta_io.c:491
gfs2_meta_inode_buffer fs/gfs2/meta_io.h:72 [inline]
gfs2_inode_refresh+0xd6/0xdc0 fs/gfs2/glops.c:472
gfs2_instantiate+0x15e/0x220 fs/gfs2/glock.c:515
gfs2_glock_holder_ready fs/gfs2/glock.c:1303 [inline]
gfs2_glock_wait+0x1d9/0x2a0 fs/gfs2/glock.c:1323
gfs2_glock_nq_init fs/gfs2/glock.h:263 [inline]
gfs2_lookupi+0x411/0x5f0 fs/gfs2/inode.c:306
gfs2_lookup_simple+0xec/0x170 fs/gfs2/inode.c:258
init_journal+0x1c3/0x2310 fs/gfs2/ops_fstype.c:739
init_inodes+0xdc/0x340 fs/gfs2/ops_fstype.c:882
gfs2_fill_super+0x1be3/0x2710 fs/gfs2/ops_fstype.c:1240
get_tree_bdev+0x400/0x620 fs/super.c:1323
gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1323
vfs_get_tree+0x88/0x270 fs/super.c:1530
do_new_mount+0x289/0xad0 fs/namespace.c:3040
do_mount fs/namespace.c:3383 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3568
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: 0033:0x7f7caad9342a
Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc97eb3c68 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7caad9342a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc97eb3c80
RBP: 00007ffc97eb3c80 R08: 00007ffc97eb3cc0 R09: 0000555556b512c0
R10: 0000000000000008 R11: 0000000000000282 R12: 0000000000000004
R13: 00007ffc97eb3cc0 R14: 0000000000000001 R15: 0000000020000218
</TASK>
================================================================================
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Cluster-devel] [syzbot] UBSAN: shift-out-of-bounds in gfs2_getbuf
@ 2022-10-13 14:58 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2022-10-13 14:58 UTC (permalink / raw)
To: cluster-devel.redhat.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 55be6084c8e0 Merge tag 'timers-core-2022-10-05' of git://g..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=176500c2880000
kernel config: https://syzkaller.appspot.com/x/.config?x=c29b6436e994d72e
dashboard link: https://syzkaller.appspot.com/bug?extid=87a187973530ac822e3c
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=174eb6aa880000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1118d5a4880000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/c8f5131ab57d/disk-55be6084.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/77167f226f35/vmlinux-55be6084.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/930c28d03062/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+87a187973530ac822e3c at syzkaller.appspotmail.com
loop0: detected capacity change from 0 to 264192
gfs2: fsid=loop0: Trying to join cluster "lock_nolock", "loop0"
gfs2: fsid=loop0: Now mounting FS (format 1801)...
================================================================================
UBSAN: shift-out-of-bounds in fs/gfs2/meta_io.c:128:16
shift exponent 4294967293 is too large for 64-bit type 'u64' (aka 'unsigned long long')
CPU: 1 PID: 3612 Comm: syz-executor373 Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_shift_out_of_bounds+0x3a6/0x420 lib/ubsan.c:322
gfs2_getbuf+0x759/0x7d0 fs/gfs2/meta_io.c:128
gfs2_meta_read+0x16a/0x910 fs/gfs2/meta_io.c:265
gfs2_meta_buffer+0x195/0x400 fs/gfs2/meta_io.c:491
gfs2_meta_inode_buffer fs/gfs2/meta_io.h:72 [inline]
gfs2_inode_refresh+0xd6/0xdc0 fs/gfs2/glops.c:472
gfs2_instantiate+0x15e/0x220 fs/gfs2/glock.c:515
gfs2_glock_holder_ready fs/gfs2/glock.c:1303 [inline]
gfs2_glock_wait+0x1d9/0x2a0 fs/gfs2/glock.c:1323
gfs2_glock_nq_init fs/gfs2/glock.h:263 [inline]
gfs2_lookupi+0x411/0x5f0 fs/gfs2/inode.c:306
gfs2_lookup_simple+0xec/0x170 fs/gfs2/inode.c:258
init_journal+0x1c3/0x2310 fs/gfs2/ops_fstype.c:739
init_inodes+0xdc/0x340 fs/gfs2/ops_fstype.c:882
gfs2_fill_super+0x1be3/0x2710 fs/gfs2/ops_fstype.c:1240
get_tree_bdev+0x400/0x620 fs/super.c:1323
gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1323
vfs_get_tree+0x88/0x270 fs/super.c:1530
do_new_mount+0x289/0xad0 fs/namespace.c:3040
do_mount fs/namespace.c:3383 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3568
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: 0033:0x7f7caad9342a
Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc97eb3c68 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7caad9342a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc97eb3c80
RBP: 00007ffc97eb3c80 R08: 00007ffc97eb3cc0 R09: 0000555556b512c0
R10: 0000000000000008 R11: 0000000000000282 R12: 0000000000000004
R13: 00007ffc97eb3cc0 R14: 0000000000000001 R15: 0000000020000218
</TASK>
================================================================================
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2022-10-13 14:58 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-10-13 13:31 [syzbot] UBSAN: shift-out-of-bounds in gfs2_getbuf syzbot
2022-10-13 13:31 ` [Cluster-devel] " syzbot
2022-10-13 13:52 ` Andrew Price
2022-10-13 13:52 ` Andrew Price
2022-10-13 14:58 ` syzbot
2022-10-13 14:58 ` [Cluster-devel] " syzbot
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