loop0: detected capacity change from 0 to 1024
EXT4-fs: Ignoring removed bh option
EXT4-fs: Ignoring removed mblk_io_submit option
__kmem_cache_create_args(ext4_groupinfo_1k) failed with error -22
CPU: 0 UID: 0 PID: 5347 Comm: syz.0.0 Not tainted 6.16.0-syzkaller-09014-gd6084bb815c4 #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
__kmem_cache_create_args+0x237/0x320 mm/slab_common.c:353
__kmem_cache_create include/linux/slab.h:353 [inline]
ext4_groupinfo_create_slab fs/ext4/mballoc.c:3590 [inline]
ext4_mb_init+0x2ff/0x2860 fs/ext4/mballoc.c:3693
__ext4_fill_super fs/ext4/super.c:5554 [inline]
ext4_fill_super+0x5231/0x6080 fs/ext4/super.c:5724
get_tree_bdev_flags+0x40b/0x4d0 fs/super.c:1692
vfs_get_tree+0x8f/0x2b0 fs/super.c:1815
do_new_mount+0x2a2/0x9e0 fs/namespace.c:3805
do_mount fs/namespace.c:4133 [inline]
__do_sys_mount fs/namespace.c:4344 [inline]
__se_sys_mount+0x317/0x410 fs/namespace.c:4321
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f43cd39030a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f43c97d3e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f43c97d3ef0 RCX: 00007f43cd39030a
RDX: 00002000000001c0 RSI: 0000200000000200 RDI: 00007f43c97d3eb0
RBP: 00002000000001c0 R08: 00007f43c97d3ef0 R09: 0000000000200000
R10: 0000000000200000 R11: 0000000000000246 R12: 0000200000000200
R13: 00007f43c97d3eb0 R14: 000000000000057a R15: 000000000000002c
EXT4-fs: no memory for groupinfo slab cache
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 0 UID: 0 PID: 5347 Comm: syz.0.0 Not tainted 6.16.0-syzkaller-09014-gd6084bb815c4 #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:199
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 c3 cc cc cc cc cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc9000d34f700 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: ffffffff8b75bca7 RCX: 87faa7fd1592fb00
RDX: 0000000000000000 RSI: ffffffff8b75bca7 RDI: 0000000000000003
RBP: ffffffff8b71ee09 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f415e7 R12: 0000000000000000
R13: 0000000000000018 R14: 0000000000000018 R15: 0000000000000001
FS: 00007f43c97d46c0(0000) GS:ffff88808d26b000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43cd372920 CR3: 000000004353c000 CR4: 0000000000352ef0
Call Trace:
__kasan_check_byte+0x12/0x40 mm/kasan/common.c:556
kasan_check_byte include/linux/kasan.h:399 [inline]
lock_acquire+0x8d/0x360 kernel/locking/lockdep.c:5842
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162
xa_destroy+0x59/0x2e0 lib/xarray.c:2387
ext4_mb_avg_fragment_size_destroy fs/ext4/mballoc.c:3659 [inline]
ext4_mb_init+0x136a/0x2860 fs/ext4/mballoc.c:3817
__ext4_fill_super fs/ext4/super.c:5554 [inline]
ext4_fill_super+0x5231/0x6080 fs/ext4/super.c:5724
get_tree_bdev_flags+0x40b/0x4d0 fs/super.c:1692
vfs_get_tree+0x8f/0x2b0 fs/super.c:1815
do_new_mount+0x2a2/0x9e0 fs/namespace.c:3805
do_mount fs/namespace.c:4133 [inline]
__do_sys_mount fs/namespace.c:4344 [inline]
__se_sys_mount+0x317/0x410 fs/namespace.c:4321
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f43cd39030a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f43c97d3e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f43c97d3ef0 RCX: 00007f43cd39030a
RDX: 00002000000001c0 RSI: 0000200000000200 RDI: 00007f43c97d3eb0
RBP: 00002000000001c0 R08: 00007f43c97d3ef0 R09: 0000000000200000
R10: 0000000000200000 R11: 0000000000000246 R12: 0000200000000200
R13: 00007f43c97d3eb0 R14: 000000000000057a R15: 000000000000002c
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:199
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 c3 cc cc cc cc cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc9000d34f700 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: ffffffff8b75bca7 RCX: 87faa7fd1592fb00
RDX: 0000000000000000 RSI: ffffffff8b75bca7 RDI: 0000000000000003
RBP: ffffffff8b71ee09 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f415e7 R12: 0000000000000000
R13: 0000000000000018 R14: 0000000000000018 R15: 0000000000000001
FS: 00007f43c97d46c0(0000) GS:ffff88808d26b000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43cd372920 CR3: 000000004353c000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
0: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
7: 00
8: 90 nop
9: 90 nop
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 66 0f 1f 00 nopw (%rax)
1c: 48 c1 ef 03 shr $0x3,%rdi
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 0f b6 04 07 movzbl (%rdi,%rax,1),%eax <-- trapping instruction
2e: 3c 08 cmp $0x8,%al
30: 0f 92 c0 setb %al
33: c3 ret
34: cc int3
35: cc int3
36: cc int3
37: cc int3
38: cc int3
39: 66 data16
3a: 66 data16
3b: 66 data16
3c: 66 data16
3d: 66 data16
3e: 66 data16
3f: 2e cs