[syzbot] [f2fs?] general protection fault in __drop_extent_tree

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 7e364e56293b Linux 6.3-rc5
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1666b8f1c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=d9a438ce47536f0c
dashboard link: https://syzkaller.appspot.com/bug?extid=d015b6c2fbb5c383bf08
compiler: Debian clang version 15.0.7, 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/54c56bddacf4/disk-7e364e56.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/447e5d1af596/vmlinux-7e364e56.xz
kernel image: https://storage.googleapis.com/syzbot-assets/3e2d1545e7be/bzImage-7e364e56.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d015b6...@syzkaller.appspotmail.com

general protection fault, probably for non-canonical address 0xdffffc0000000009: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000048-0x000000000000004f]
CPU: 1 PID: 17900 Comm: syz-executor.4 Not tainted 6.3.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:__lock_acquire+0x69/0x1f80 kernel/locking/lockdep.c:4926
Code: df 0f b6 04 10 84 c0 0f 85 fb 15 00 00 83 3d 41 b7 e9 0c 00 0f 84 a8 14 00 00 83 3d d0 29 75 0b 00 74 2b 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 f7 e8 29 04 76 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc900167a7b00 EFLAGS: 00010006
RAX: 0000000000000009 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000048
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff88802b86ba80 R14: 0000000000000048 R15: 0000000000000001
FS: 00007f37ad035700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f37ad014718 CR3: 00000000912ec000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
lock_acquire+0x1e1/0x520 kernel/locking/lockdep.c:5669
__raw_write_lock include/linux/rwlock_api_smp.h:209 [inline]
_raw_write_lock+0x2e/0x40 kernel/locking/spinlock.c:300
__drop_extent_tree+0x3ac/0x660 fs/f2fs/extent_cache.c:1192
f2fs_drop_extent_tree+0x17/0x30 fs/f2fs/extent_cache.c:1208
f2fs_insert_range+0x2d5/0x3c0 fs/f2fs/file.c:1664
f2fs_fallocate+0x4e4/0x6d0 fs/f2fs/file.c:1838
vfs_fallocate+0x54b/0x6b0 fs/open.c:324
ksys_fallocate fs/open.c:347 [inline]
__do_sys_fallocate fs/open.c:355 [inline]
__se_sys_fallocate fs/open.c:353 [inline]
__x64_sys_fallocate+0xbd/0x100 fs/open.c:353
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f37ac28c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f37ad035168 EFLAGS: 00000246
ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f37ac3ac120 RCX: 00007f37ac28c0f9
RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000000000000005
RBP: 00007f37ac2e7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000ff8000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff1081525f R14: 00007f37ad035300 R15: 0000000000022000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0x69/0x1f80 kernel/locking/lockdep.c:4926
Code: df 0f b6 04 10 84 c0 0f 85 fb 15 00 00 83 3d 41 b7 e9 0c 00 0f 84 a8 14 00 00 83 3d d0 29 75 0b 00 74 2b 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 f7 e8 29 04 76 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc900167a7b00 EFLAGS: 00010006
RAX: 0000000000000009 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000048
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff88802b86ba80 R14: 0000000000000048 R15: 0000000000000001
FS: 00007f37ad035700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f37ad014718 CR3: 00000000912ec000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: df 0f fisttps (%rdi)
2: b6 04 mov $0x4,%dh
4: 10 84 c0 0f 85 fb 15 adc %al,0x15fb850f(%rax,%rax,8)
b: 00 00 add %al,(%rax)
d: 83 3d 41 b7 e9 0c 00 cmpl $0x0,0xce9b741(%rip) # 0xce9b755
14: 0f 84 a8 14 00 00 je 0x14c2
1a: 83 3d d0 29 75 0b 00 cmpl $0x0,0xb7529d0(%rip) # 0xb7529f1
21: 74 2b je 0x4e
23: 4c 89 f0 mov %r14,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) <-- trapping instruction
2e: 74 12 je 0x42
30: 4c 89 f7 mov %r14,%rdi
33: e8 29 04 76 00 callq 0x760461
38: 48 rex.W
39: ba 00 00 00 00 mov $0x0,%edx
3e: 00 fc add %bh,%ah


---
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[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: d635f6cc934b Merge tag 'drm-fixes-2023-05-20' of git://ano..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=177b7d29280000
kernel config: https://syzkaller.appspot.com/x/.config?x=bda401fa9c6b4502

dashboard link: https://syzkaller.appspot.com/bug?extid=d015b6c2fbb5c383bf08
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=157567a6280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13d301f9280000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8dcff8d58d55/disk-d635f6cc.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b0fda3221672/vmlinux-d635f6cc.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9541aa11c888/bzImage-d635f6cc.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/7626bc33593c/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d015b6...@syzkaller.appspotmail.com

general protection fault, probably for non-canonical address 0xdffffc0000000009: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000048-0x000000000000004f]

CPU: 1 PID: 5010 Comm: syz-executor252 Not tainted 6.4.0-rc2-syzkaller-00290-gd635f6cc934b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:__lock_acquire+0x69/0x2000 kernel/locking/lockdep.c:4942
Code: df 0f b6 04 30 84 c0 0f 85 5a 16 00 00 83 3d d1 e1 ea 0c 00 0f 84 02 11 00 00 83 3d 70 33 74 0b 00 74 2b 4c 89 f0 48 c1 e8 03 <80> 3c 30 00 74 12 4c 89 f7 e8 59 38 78 00 48 be 00 00 00 00 00 fc
RSP: 0018:ffffc90003a6faf8 EFLAGS: 00010006

RAX: 0000000000000009 RBX: 0000000000000000 RCX: 0000000000000000

RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000000048

RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000

R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000048 R15: ffff88807d47d940
FS: 00007fcf413a3700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 000055664a01b058 CR3: 000000007ddb9000 CR4: 00000000003506e0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>

lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5691

__raw_write_lock include/linux/rwlock_api_smp.h:209 [inline]
_raw_write_lock+0x2e/0x40 kernel/locking/spinlock.c:300

__drop_extent_tree+0x3ac/0x660 fs/f2fs/extent_cache.c:1100
f2fs_drop_extent_tree+0x17/0x30 fs/f2fs/extent_cache.c:1116

f2fs_insert_range+0x2d5/0x3c0 fs/f2fs/file.c:1664
f2fs_fallocate+0x4e4/0x6d0 fs/f2fs/file.c:1838
vfs_fallocate+0x54b/0x6b0 fs/open.c:324
ksys_fallocate fs/open.c:347 [inline]
__do_sys_fallocate fs/open.c:355 [inline]
__se_sys_fallocate fs/open.c:353 [inline]
__x64_sys_fallocate+0xbd/0x100 fs/open.c:353
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd

RIP: 0033:0x7fcf413f7459
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcf413a32f8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fcf414817a0 RCX: 00007fcf413f7459

RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000000000000005

RBP: 00007fcf4144e7f8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 00007fcf4144e6c0
R13: 0030656c69662f2e R14: 4b55cd3db08b6c4e R15: 00007fcf414817a8

</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---

RIP: 0010:__lock_acquire+0x69/0x2000 kernel/locking/lockdep.c:4942
Code: df 0f b6 04 30 84 c0 0f 85 5a 16 00 00 83 3d d1 e1 ea 0c 00 0f 84 02 11 00 00 83 3d 70 33 74 0b 00 74 2b 4c 89 f0 48 c1 e8 03 <80> 3c 30 00 74 12 4c 89 f7 e8 59 38 78 00 48 be 00 00 00 00 00 fc
RSP: 0018:ffffc90003a6faf8 EFLAGS: 00010006

RAX: 0000000000000009 RBX: 0000000000000000 RCX: 0000000000000000

RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000000048

RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000

R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000048 R15: ffff88807d47d940
FS: 00007fcf413a3700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 000055664a01b058 CR3: 000000007ddb9000 CR4: 00000000003506e0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: df 0f fisttps (%rdi)
2: b6 04 mov $0x4,%dh

4: 30 84 c0 0f 85 5a 16 xor %al,0x165a850f(%rax,%rax,8)

b: 00 00 add %al,(%rax)

d: 83 3d d1 e1 ea 0c 00 cmpl $0x0,0xceae1d1(%rip) # 0xceae1e5
14: 0f 84 02 11 00 00 je 0x111c
1a: 83 3d 70 33 74 0b 00 cmpl $0x0,0xb743370(%rip) # 0xb743391

21: 74 2b je 0x4e
23: 4c 89 f0 mov %r14,%rax
26: 48 c1 e8 03 shr $0x3,%rax

* 2a: 80 3c 30 00 cmpb $0x0,(%rax,%rsi,1) <-- trapping instruction

2e: 74 12 je 0x42
30: 4c 89 f7 mov %r14,%rdi

33: e8 59 38 78 00 callq 0x783891
38: 48 rex.W
39: be 00 00 00 00 mov $0x0,%esi

3e: 00 fc add %bh,%ah


---

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