* [syzbot] BUG: sleeping function called from invalid context in __getblk_gfp
@ 2022-11-28 10:01 syzbot
2024-01-30 1:15 ` [syzbot] [fs?] " syzbot
0 siblings, 1 reply; 5+ messages in thread
From: syzbot @ 2022-11-28 10:01 UTC (permalink / raw)
To: hch, linux-kernel, syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: 644e9524388a Merge tag 'for-v6.1-rc' of git://git.kernel.o..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=13bf0dc3880000
kernel config: https://syzkaller.appspot.com/x/.config?x=8d01b6e3197974dd
dashboard link: https://syzkaller.appspot.com/bug?extid=69b40dc5fd40f32c199f
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=1282cf9b880000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17a7ad75880000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/0968428e17b4/disk-644e9524.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/fd4c3bfd0777/vmlinux-644e9524.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ee4571f27f1c/bzImage-644e9524.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/4a1592babcac/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+69b40dc5fd40f32c199f@syzkaller.appspotmail.com
Buffer I/O error on dev loop0, logical block 13466417, async page read
syz-executor380: attempt to access beyond end of device
loop0: rw=0, sector=16147212, nr_sectors = 2 limit=128
Buffer I/O error on dev loop0, logical block 8073606, async page read
BUG: sleeping function called from invalid context at fs/buffer.c:1331
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3632, name: syz-executor380
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor380/3632:
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x7aa/0x2df0 fs/namei.c:3711
#1: ffffffff8d3e65f8 (pointers_lock){.+.+}-{2:2}, at: get_block+0x159/0x16d0 fs/sysv/itree.c:217
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 3632 Comm: syz-executor380 Not tainted 6.1.0-rc6-syzkaller-00308-g644e9524388a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
__might_resched+0x4e9/0x6b0 kernel/sched/core.c:9908
__getblk_gfp+0x41/0x290 fs/buffer.c:1331
__bread_gfp+0x28/0x320 fs/buffer.c:1367
sb_bread include/linux/buffer_head.h:338 [inline]
get_branch+0x2ce/0x680 fs/sysv/itree.c:104
get_block+0x175/0x16d0 fs/sysv/itree.c:218
block_read_full_folio+0x3b3/0xfa0 fs/buffer.c:2271
filemap_read_folio+0x187/0x7d0 mm/filemap.c:2407
do_read_cache_folio+0x2d3/0x790 mm/filemap.c:3534
do_read_cache_page mm/filemap.c:3576 [inline]
read_cache_page+0x56/0x270 mm/filemap.c:3585
read_mapping_page include/linux/pagemap.h:756 [inline]
dir_get_page fs/sysv/dir.c:58 [inline]
sysv_find_entry+0x1b3/0x440 fs/sysv/dir.c:146
sysv_inode_by_name+0x74/0x1b0 fs/sysv/dir.c:360
sysv_lookup+0x62/0xe0 fs/sysv/namei.c:38
lookup_open fs/namei.c:3391 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x10e6/0x2df0 fs/namei.c:3711
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
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: 0033:0x7f5ab3064739
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdfc2aa1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f5ab3064739
RDX: 0000000000000000 RSI: 0000000020004280 RDI: 00000000ffffff9c
RBP: 00007f5ab3023fd0 R08: 0000000000009e04 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ab3024060
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
syz-executor380: attempt to access beyond end of device
loop0: rw=0, sector=6491548, nr_sectors = 2 limit=128
Buffer I/O error on dev loop0, logical block 3245774, async page read
syz-executor380: attempt to access beyond end of device
loop0: rw=0, sector=17669878, nr_sectors = 2 limit=128
Buffer I/O error on dev loop0, logical block 8834939, async page read
BUG: sleeping function called from invalid context at fs/buffer.c:1331
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3632, name: syz-executor380
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor380/3632:
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x7aa/0x2df0 fs/namei.c:3711
#1: ffffffff8d3e65f8 (pointers_lock){.+.+}-{2:2}, at: get_block+0x159/0x16d0 fs/sysv/itree.c:217
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 3632 Comm: syz-executor380 Tainted: G W 6.1.0-rc6-syzkaller-00308-g644e9524388a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
__might_resched+0x4e9/0x6b0 kernel/sched/core.c:9908
__getblk_gfp+0x41/0x290 fs/buffer.c:1331
__bread_gfp+0x28/0x320 fs/buffer.c:1367
sb_bread include/linux/buffer_head.h:338 [inline]
get_branch+0x2ce/0x680 fs/sysv/itree.c:104
get_block+0x175/0x16d0 fs/sysv/itree.c:218
block_read_full_folio+0x3b3/0xfa0 fs/buffer.c:2271
filemap_read_folio+0x187/0x7d0 mm/filemap.c:2407
do_read_cache_folio+0x2d3/0x790 mm/filemap.c:3534
do_read_cache_page mm/filemap.c:3576 [inline]
read_cache_page+0x56/0x270 mm/filemap.c:3585
read_mapping_page include/linux/pagemap.h:756 [inline]
dir_get_page fs/sysv/dir.c:58 [inline]
sysv_find_entry+0x1b3/0x440 fs/sysv/dir.c:146
sysv_inode_by_name+0x74/0x1b0 fs/sysv/dir.c:360
sysv_lookup+0x62/0xe0 fs/sysv/namei.c:38
lookup_open fs/namei.c:3391 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x10e6/0x2df0 fs/namei.c:3711
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
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: 0033:0x7f5ab3064739
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdfc2aa1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f5ab3064739
RDX: 0000000000000000 RSI: 0000000020004280 RDI: 00000000ffffff9c
RBP: 00007f5ab3023fd0 R08: 0000000000009e04 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ab3024060
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
BUG: sleeping function called from invalid context at fs/buffer.c:1331
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3632, name: syz-executor380
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor380/3632:
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x7aa/0x2df0 fs/namei.c:3711
#1: ffffffff8d3e65f8 (pointers_lock){.+.+}-{2:2}, at: get_block+0x159/0x16d0 fs/sysv/itree.c:217
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 3632 Comm: syz-executor380 Tainted: G W 6.1.0-rc6-syzkaller-00308-g644e9524388a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
__might_resched+0x4e9/0x6b0 kernel/sched/core.c:9908
__getblk_gfp+0x41/0x290 fs/buffer.c:1331
__bread_gfp+0x28/0x320 fs/buffer.c:1367
sb_bread include/linux/buffer_head.h:338 [inline]
get_branch+0x2ce/0x680 fs/sysv/itree.c:104
get_block+0x175/0x16d0 fs/sysv/itree.c:218
block_read_full_folio+0x3b3/0xfa0 fs/buffer.c:2271
filemap_read_folio+0x187/0x7d0 mm/filemap.c:2407
do_read_cache_folio+0x2d3/0x790 mm/filemap.c:3534
do_read_cache_page mm/filemap.c:3576 [inline]
read_cache_page+0x56/0x270 mm/filemap.c:3585
read_mapping_page include/linux/pagemap.h:756 [inline]
dir_get_page fs/sysv/dir.c:58 [inline]
sysv_find_entry+0x1b3/0x440 fs/sysv/dir.c:146
sysv_inode_by_name+0x74/0x1b0 fs/sysv/dir.c:360
sysv_lookup+0x62/0xe0 fs/sysv/namei.c:38
lookup_open fs/namei.c:3391 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x10e6/0x2df0 fs/namei.c:3711
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
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: 0033:0x7f5ab3064739
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdfc2aa1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f5ab3064739
RDX: 0000000000000000 RSI: 0000000020004280 RDI: 00000000ffffff9c
RBP: 00007f5ab3023fd0 R08: 0000000000009e04 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ab3024060
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
BUG: sleeping function called from invalid context at fs/buffer.c:1331
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3632, name: syz-executor380
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor380/3632:
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x7aa/0x2df0 fs/namei.c:3711
#1: ffffffff8d3e65f8 (pointers_lock){.+.+}-{2:2}, at: get_block+0x159/0x16d0 fs/sysv/itree.c:217
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 3632 Comm: syz-executor380 Tainted: G W 6.1.0-rc6-syzkaller-00308-g644e9524388a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
__might_resched+0x4e9/0x6b0 kernel/sched/core.c:9908
__getblk_gfp+0x41/0x290 fs/buffer.c:1331
__bread_gfp+0x28/0x320 fs/buffer.c:1367
sb_bread include/linux/buffer_head.h:338 [inline]
get_branch+0x2ce/0x680 fs/sysv/itree.c:104
get_block+0x175/0x16d0 fs/sysv/itree.c:218
block_read_full_folio+0x3b3/0xfa0 fs/buffer.c:2271
filemap_read_folio+0x187/0x7d0 mm/filemap.c:2407
do_read_cache_folio+0x2d3/0x790 mm/filemap.c:3534
do_read_cache_page mm/filemap.c:3576 [inline]
read_cache_page+0x56/0x270 mm/filemap.c:3585
read_mapping_page include/linux/pagemap.h:756 [inline]
dir_get_page fs/sysv/dir.c:58 [inline]
sysv_find_entry+0x1b3/0x440 fs/sysv/dir.c:146
sysv_inode_by_name+0x74/0x1b0 fs/sysv/dir.c:360
sysv_lookup+0x62/0xe0 fs/sysv/namei.c:38
lookup_open fs/namei.c:3391 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x10e6/0x2df0 fs/namei.c:3711
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
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: 0033:0x7f5ab3064739
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdfc2aa1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f5ab3064739
RDX: 0000000000000000 RSI: 0000000020004280 RDI: 00000000ffffff9c
RBP: 00007f5ab3023fd0 R08: 0000000000009e04 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ab3024060
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
BUG: sleeping function called from invalid context at include/linux/pagemap.h:937
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3632, name: syz-executor380
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor380/3632:
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x7aa/0x2df0 fs/namei.c:3711
#1: ffffffff8d3e65f8 (pointers_lock){.+.+}-{2:2}, at: get_block+0x159/0x16d0 fs/sysv/itree.c:217
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 3632 Comm: syz-executor380 Tainted: G W 6.1.0-rc6-syzkaller-00308-g644e9524388a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
__might_resched+0x4e9/0x6b0 kernel/sched/core.c:9908
folio_lock include/linux/pagemap.h:937 [inline]
__filemap_get_folio+0x43c/0x1260 mm/filemap.c:1931
pagecache_get_page+0x28/0x260 mm/folio-compat.c:110
find_or_create_page include/linux/pagemap.h:613 [inline]
grow_dev_page+0xba/0x920 fs/buffer.c:946
grow_buffers fs/buffer.c:1011 [inline]
__getblk_slow fs/buffer.c:1038 [inline]
__getblk_gfp+0x16c/0x290 fs/buffer.c:1333
__bread_gfp+0x28/0x320 fs/buffer.c:1367
sb_bread include/linux/buffer_head.h:338 [inline]
get_branch+0x2ce/0x680 fs/sysv/itree.c:104
get_block+0x175/0x16d0 fs/sysv/itree.c:218
block_read_full_folio+0x3b3/0xfa0 fs/buffer.c:2271
filemap_read_folio+0x187/0x7d0 mm/filemap.c:2407
do_read_cache_folio+0x2d3/0x790 mm/filemap.c:3534
do_read_cache_page mm/filemap.c:3576 [inline]
read_cache_page+0x56/0x270 mm/filemap.c:3585
read_mapping_page include/linux/pagemap.h:756 [inline]
dir_get_page fs/sysv/dir.c:58 [inline]
sysv_find_entry+0x1b3/0x440 fs/sysv/dir.c:146
sysv_inode_by_name+0x74/0x1b0 fs/sysv/dir.c:360
sysv_lookup+0x62/0xe0 fs/sysv/namei.c:38
lookup_open fs/namei.c:3391 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x10e6/0x2df0 fs/namei.c:3711
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
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: 0033:0x7f5ab3064739
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdfc2aa1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f5ab3064739
RDX: 0000000000000000 RSI: 0000000020004280 RDI: 00000000ffffff9c
RBP: 00007f5ab3023fd0 R08: 0000000000009e04 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ab3024060
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
BUG: sleeping function called from invalid context at fs/buffer.c:1331
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3632, name: syz-executor380
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor380/3632:
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x7aa/0x2df0 fs/namei.c:3711
#1: ffffffff8d3e65f8 (pointers_lock){.+.+}-{2:2}, at: get_block+0x159/0x16d0 fs/sysv/itree.c:217
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 3632 Comm: syz-executor380 Tainted: G W 6.1.0-rc6-syzkaller-00308-g644e9524388a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
__might_resched+0x4e9/0x6b0 kernel/sched/core.c:9908
__getblk_gfp+0x41/0x290 fs/buffer.c:1331
__bread_gfp+0x28/0x320 fs/buffer.c:1367
sb_bread include/linux/buffer_head.h:338 [inline]
get_branch+0x2ce/0x680 fs/sysv/itree.c:104
get_block+0x175/0x16d0 fs/sysv/itree.c:218
block_read_full_folio+0x3b3/0xfa0 fs/buffer.c:2271
filemap_read_folio+0x187/0x7d0 mm/filemap.c:2407
do_read_cache_folio+0x2d3/0x790 mm/filemap.c:3534
do_read_cache_page mm/filemap.c:3576 [inline]
read_cache_page+0x56/0x270 mm/filemap.c:3585
read_mapping_page include/linux/pagemap.h:756 [inline]
dir_get_page fs/sysv/dir.c:58 [inline]
sysv_find_entry+0x1b3/0x440 fs/sysv/dir.c:146
sysv_inode_by_name+0x74/0x1b0 fs/sysv/dir.c:360
sysv_lookup+0x62/0xe0 fs/sysv/namei.c:38
lookup_open fs/namei.c:3391 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x10e6/0x2df0 fs/namei.c:3711
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
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: 0033:0x7f5ab3064739
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdfc2aa1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f5ab3064739
RDX: 0000000000000000 RSI: 0000000020004280 RDI: 00000000ffffff9c
RBP: 00007f5ab3023fd0 R08: 0000000000009e04 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ab3024060
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
BUG: sleeping function called from invalid context at fs/buffer.c:1331
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3632, name: syz-executor380
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor380/3632:
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x7aa/0x2df0 fs/namei.c:3711
#1: ffffffff8d3e65f8 (pointers_lock){.+.+}-{2:2}, at: get_block+0x159/0x16d0 fs/sysv/itree.c:217
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 3632 Comm: syz-executor380 Tainted: G W 6.1.0-rc6-syzkaller-00308-g644e9524388a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
__might_resched+0x4e9/0x6b0 kernel/sched/core.c:9908
__getblk_gfp+0x41/0x290 fs/buffer.c:1331
__bread_gfp+0x28/0x320 fs/buffer.c:1367
sb_bread include/linux/buffer_head.h:338 [inline]
get_branch+0x2ce/0x680 fs/sysv/itree.c:104
get_block+0x175/0x16d0 fs/sysv/itree.c:218
block_read_full_folio+0x3b3/0xfa0 fs/buffer.c:2271
filemap_read_folio+0x187/0x7d0 mm/filemap.c:2407
do_read_cache_folio+0x2d3/0x790 mm/filemap.c:3534
do_read_cache_page mm/filemap.c:3576 [inline]
read_cache_page+0x56/0x270 mm/filemap.c:3585
read_mapping_page include/linux/pagemap.h:756 [inline]
dir_get_page fs/sysv/dir.c:58 [inline]
sysv_find_entry+0x1b3/0x440 fs/sysv/dir.c:146
sysv_inode_by_name+0x74/0x1b0 fs/sysv/dir.c:360
sysv_lookup+0x62/0xe0 fs/sysv/namei.c:38
lookup_open fs/namei.c:3391 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x10e6/0x2df0 fs/namei.c:3711
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
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: 0033:0x7f5ab3064739
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdfc2aa1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f5ab3064739
RDX: 0000000000000000 RSI: 0000000020004280 RDI: 00000000ffffff9c
RBP: 00007f5ab3023fd0 R08: 0000000000009e04 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ab3024060
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
BUG: sleeping function called from invalid context at fs/buffer.c:1331
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3632, name: syz-executor380
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor380/3632:
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x7aa/0x2df0 fs/namei.c:3711
#1: ffffffff8d3e65f8 (pointers_lock){.+.+}-{2:2}, at: get_block+0x159/0x16d0 fs/sysv/itree.c:217
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 3632 Comm: syz-executor380 Tainted: G W 6.1.0-rc6-syzkaller-00308-g644e9524388a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
__might_resched+0x4e9/0x6b0 kernel/sched/core.c:9908
__getblk_gfp+0x41/0x290 fs/buffer.c:1331
__bread_gfp+0x28/0x320 fs/buffer.c:1367
sb_bread include/linux/buffer_head.h:338 [inline]
get_branch+0x2ce/0x680 fs/sysv/itree.c:104
get_block+0x175/0x16d0 fs/sysv/itree.c:218
block_read_full_folio+0x3b3/0xfa0 fs/buffer.c:2271
filemap_read_folio+0x187/0x7d0 mm/filemap.c:2407
do_read_cache_folio+0x2d3/0x790 mm/filemap.c:3534
do_read_cache_page mm/filemap.c:3576 [inline]
read_cache_page+0x56/0x270 mm/filemap.c:3585
read_mapping_page include/linux/pagemap.h:756 [inline]
dir_get_page fs/sysv/dir.c:58 [inline]
sysv_find_entry+0x1b3/0x440 fs/sysv/dir.c:146
sysv_inode_by_name+0x74/0x1b0 fs/sysv/dir.c:360
sysv_lookup+0x62/0xe0 fs/sysv/namei.c:38
lookup_open fs/namei.c:3391 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x10e6/0x2df0 fs/namei.c:3711
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
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: 0033:0x7f5ab3064739
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdfc2aa1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f5ab3064739
RDX: 0000000000000000 RSI: 0000000020004280 RDI: 00000000ffffff9c
RBP: 00007f5ab3023fd0 R08: 0000000000009e04 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ab3024060
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
BUG: sleeping function called from invalid context at fs/buffer.c:1331
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3632, name: syz-executor380
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor380/3632:
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x7aa/0x2df0 fs/namei.c:3711
#1: ffffffff8d3e65f8 (pointers_lock){.+.+}-{2:2}, at: get_block+0x159/0x16d0 fs/sysv/itree.c:217
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 3632 Comm: syz-executor380 Tainted: G W 6.1.0-rc6-syzkaller-00308-g644e9524388a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
__might_resched+0x4e9/0x6b0 kernel/sched/core.c:9908
__getblk_gfp+0x41/0x290 fs/buffer.c:1331
__bread_gfp+0x28/0x320 fs/buffer.c:1367
sb_bread include/linux/buffer_head.h:338 [inline]
get_branch+0x2ce/0x680 fs/sysv/itree.c:104
get_block+0x175/0x16d0 fs/sysv/itree.c:218
block_read_full_folio+0x3b3/0xfa0 fs/buffer.c:2271
filemap_read_folio+0x187/0x7d0 mm/filemap.c:2407
do_read_cache_folio+0x2d3/0x790 mm/filemap.c:3534
do_read_cache_page mm/filemap.c:3576 [inline]
read_cache_page+0x56/0x270 mm/filemap.c:3585
read_mapping_page include/linux/pagemap.h:756 [inline]
dir_get_page fs/sysv/dir.c:58 [inline]
sysv_find_entry+0x1b3/0x440 fs/sysv/dir.c:146
sysv_inode_by_name+0x74/0x1b0 fs/sysv/dir.c:360
sysv_lookup+0x62/0xe0 fs/sysv/namei.c:38
lookup_open fs/namei.c:3391 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x10e6/0x2df0 fs/namei.c:3711
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
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: 0033:0x7f5ab3064739
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdfc2aa1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f5ab3064739
RDX: 0000000000000000 RSI: 0000000020004280 RDI: 00000000ffffff9c
RBP: 00007f5ab3023fd0 R08: 0000000000009e04 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ab3024060
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
BUG: sleeping function called from invalid context at fs/buffer.c:1331
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3632, name: syz-executor380
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor380/3632:
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x7aa/0x2df0 fs/namei.c:3711
#1: ffffffff8d3e65f8 (pointers_lock){.+.+}-{2:2}, at: get_block+0x159/0x16d0 fs/sysv/itree.c:217
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 3632 Comm: syz-executor380 Tainted: G W 6.1.0-rc6-syzkaller-00308-g644e9524388a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
__might_resched+0x4e9/0x6b0 kernel/sched/core.c:9908
__getblk_gfp+0x41/0x290 fs/buffer.c:1331
__bread_gfp+0x28/0x320 fs/buffer.c:1367
sb_bread include/linux/buffer_head.h:338 [inline]
get_branch+0x2ce/0x680 fs/sysv/itree.c:104
get_block+0x175/0x16d0 fs/sysv/itree.c:218
block_read_full_folio+0x3b3/0xfa0 fs/buffer.c:2271
filemap_read_folio+0x187/0x7d0 mm/filemap.c:2407
do_read_cache_folio+0x2d3/0x790 mm/filemap.c:3534
do_read_cache_page mm/filemap.c:3576 [inline]
read_cache_page+0x56/0x270 mm/filemap.c:3585
read_mapping_page include/linux/pagemap.h:756 [inline]
dir_get_page fs/sysv/dir.c:58 [inline]
sysv_find_entry+0x1b3/0x440 fs/sysv/dir.c:146
sysv_inode_by_name+0x74/0x1b0 fs/sysv/dir.c:360
sysv_lookup+0x62/0xe0 fs/sysv/namei.c:38
lookup_open fs/namei.c:3391 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x10e6/0x2df0 fs/namei.c:3711
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
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: 0033:0x7f5ab3064739
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdfc2aa1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f5ab3064739
RDX: 0000000000000000 RSI: 0000000020004280 RDI: 00000000ffffff9c
RBP: 00007f5ab3023fd0 R08: 0000000000009e04 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ab3024060
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
BUG: sleeping function called from invalid context at include/linux/pagemap.h:937
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3632, name: syz-executor380
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor380/3632:
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff888073674188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x7aa/0x2df0 fs/namei.c:3711
---
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.
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] [fs?] BUG: sleeping function called from invalid context in __getblk_gfp
2022-11-28 10:01 [syzbot] BUG: sleeping function called from invalid context in __getblk_gfp syzbot
@ 2024-01-30 1:15 ` syzbot
2024-01-30 11:54 ` Jan Kara
0 siblings, 1 reply; 5+ messages in thread
From: syzbot @ 2024-01-30 1:15 UTC (permalink / raw)
To: akpm, axboe, brauner, chenzhongjin, dchinner, hch, hch, jack,
linux-fsdevel, linux-kernel, penguin-kernel, syzkaller-bugs, viro,
willy
syzbot suspects this issue was fixed by commit:
commit 6f861765464f43a71462d52026fbddfc858239a5
Author: Jan Kara <jack@suse.cz>
Date: Wed Nov 1 17:43:10 2023 +0000
fs: Block writes to mounted block devices
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=116642dfe80000
start commit: d88520ad73b7 Merge tag 'pull-nfsd-fix' of git://git.kernel..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=174a257c5ae6b4fd
dashboard link: https://syzkaller.appspot.com/bug?extid=69b40dc5fd40f32c199f
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16a77593680000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1104a593680000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: fs: Block writes to mounted block devices
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] [fs?] BUG: sleeping function called from invalid context in __getblk_gfp
2024-01-30 1:15 ` [syzbot] [fs?] " syzbot
@ 2024-01-30 11:54 ` Jan Kara
2024-01-30 15:57 ` Christoph Hellwig
2024-01-31 10:56 ` Christian Brauner
0 siblings, 2 replies; 5+ messages in thread
From: Jan Kara @ 2024-01-30 11:54 UTC (permalink / raw)
To: syzbot
Cc: akpm, axboe, brauner, chenzhongjin, dchinner, hch, hch, jack,
linux-fsdevel, linux-kernel, penguin-kernel, syzkaller-bugs, viro,
willy
On Mon 29-01-24 17:15:05, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
>
> commit 6f861765464f43a71462d52026fbddfc858239a5
> Author: Jan Kara <jack@suse.cz>
> Date: Wed Nov 1 17:43:10 2023 +0000
>
> fs: Block writes to mounted block devices
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=116642dfe80000
> start commit: d88520ad73b7 Merge tag 'pull-nfsd-fix' of git://git.kernel..
> git tree: upstream
> kernel config: https://syzkaller.appspot.com/x/.config?x=174a257c5ae6b4fd
> dashboard link: https://syzkaller.appspot.com/bug?extid=69b40dc5fd40f32c199f
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16a77593680000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1104a593680000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: fs: Block writes to mounted block devices
This doesn't look correct. The problem here really is that sysv is calling
sb_bread() under a RWLOCK - pointers_lock - in get_block(). Which more or
less shows nobody has run sysv in ages because otherwise the chances of
sleeping in atomic context are really high? Perhaps another candidate for
removal?
Honza
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] [fs?] BUG: sleeping function called from invalid context in __getblk_gfp
2024-01-30 11:54 ` Jan Kara
@ 2024-01-30 15:57 ` Christoph Hellwig
2024-01-31 10:56 ` Christian Brauner
1 sibling, 0 replies; 5+ messages in thread
From: Christoph Hellwig @ 2024-01-30 15:57 UTC (permalink / raw)
To: Jan Kara
Cc: syzbot, akpm, axboe, brauner, chenzhongjin, dchinner, hch, hch,
linux-fsdevel, linux-kernel, penguin-kernel, syzkaller-bugs, viro,
willy
On Tue, Jan 30, 2024 at 12:54:30PM +0100, Jan Kara wrote:
> sb_bread() under a RWLOCK - pointers_lock - in get_block(). Which more or
> less shows nobody has run sysv in ages because otherwise the chances of
> sleeping in atomic context are really high? Perhaps another candidate for
> removal?
I'd be fine with it, but I think Al has an attachment to it :)
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] [fs?] BUG: sleeping function called from invalid context in __getblk_gfp
2024-01-30 11:54 ` Jan Kara
2024-01-30 15:57 ` Christoph Hellwig
@ 2024-01-31 10:56 ` Christian Brauner
1 sibling, 0 replies; 5+ messages in thread
From: Christian Brauner @ 2024-01-31 10:56 UTC (permalink / raw)
To: Jan Kara
Cc: syzbot, akpm, axboe, chenzhongjin, dchinner, hch, hch,
linux-fsdevel, linux-kernel, penguin-kernel, syzkaller-bugs, viro,
willy
On Tue, Jan 30, 2024 at 12:54:30PM +0100, Jan Kara wrote:
> On Mon 29-01-24 17:15:05, syzbot wrote:
> > syzbot suspects this issue was fixed by commit:
> >
> > commit 6f861765464f43a71462d52026fbddfc858239a5
> > Author: Jan Kara <jack@suse.cz>
> > Date: Wed Nov 1 17:43:10 2023 +0000
> >
> > fs: Block writes to mounted block devices
> >
> > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=116642dfe80000
> > start commit: d88520ad73b7 Merge tag 'pull-nfsd-fix' of git://git.kernel..
> > git tree: upstream
> > kernel config: https://syzkaller.appspot.com/x/.config?x=174a257c5ae6b4fd
> > dashboard link: https://syzkaller.appspot.com/bug?extid=69b40dc5fd40f32c199f
> > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16a77593680000
> > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1104a593680000
> >
> > If the result looks correct, please mark the issue as fixed by replying with:
> >
> > #syz fix: fs: Block writes to mounted block devices
>
> This doesn't look correct. The problem here really is that sysv is calling
> sb_bread() under a RWLOCK - pointers_lock - in get_block(). Which more or
> less shows nobody has run sysv in ages because otherwise the chances of
> sleeping in atomic context are really high? Perhaps another candidate for
> removal?
Fwiw, yes, please!
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2024-01-31 10:56 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-11-28 10:01 [syzbot] BUG: sleeping function called from invalid context in __getblk_gfp syzbot
2024-01-30 1:15 ` [syzbot] [fs?] " syzbot
2024-01-30 11:54 ` Jan Kara
2024-01-30 15:57 ` Christoph Hellwig
2024-01-31 10:56 ` Christian Brauner
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