loop0: detected capacity change from 0 to 512
loop0: detected capacity change from 0 to 64
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 UID: 0 PID: 5315 Comm: syz.0.0 Not tainted 6.13.0-rc6-syzkaller-00231-g77a903cd8e5a #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:do_perf_trace_block_buffer include/trace/events/block.h:24 [inline]
RIP: 0010:perf_trace_block_buffer+0x293/0x490 include/trace/events/block.h:24
Code: 24 18 48 8d 58 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 db 03 65 fd 4c 8b 3b 49 83 c7 34 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 6c 01 00 00 45 8b 3f 49 8d 5c 24 08 48
RSP: 0018:ffffc9000d4579e0 EFLAGS: 00010207
RAX: 0000000000000006 RBX: ffff888043b41dc8 RCX: 0000000000100000
RDX: ffffc9000e1d2000 RSI: 00000000000029d6 RDI: ffff88801fc37768
RBP: ffffc9000d457ac8 R08: ffffffff81a9171b R09: 1ffffffff203305e
R10: dffffc0000000000 R11: fffffbfff203305f R12: ffffe8ffffc48780
R13: dffffc0000000000 R14: ffff88801fc376e0 R15: 0000000000000034
FS: 00007f5734ee96c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a31c654678 CR3: 000000003a2ac000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
trace_block_dirty_buffer include/trace/events/block.h:67 [inline]
mark_buffer_dirty+0x3c5/0x440 fs/buffer.c:1175
minix_fill_super+0x12e3/0x1ae0 fs/minix/inode.c:318
get_tree_bdev_flags+0x48c/0x5c0 fs/super.c:1636
vfs_get_tree+0x90/0x2b0 fs/super.c:1814
do_new_mount+0x2be/0xb40 fs/namespace.c:3511
do_mount fs/namespace.c:3851 [inline]
__do_sys_mount fs/namespace.c:4061 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4038
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f57341874ca
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:00007f5734ee8e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f5734ee8ef0 RCX: 00007f57341874ca
RDX: 0000000020000140 RSI: 0000000020000040 RDI: 00007f5734ee8eb0
RBP: 0000000020000140 R08: 00007f5734ee8ef0 R09: 0000000000804008
R10: 0000000000804008 R11: 0000000000000246 R12: 0000000020000040
R13: 00007f5734ee8eb0 R14: 000000000000020d R15: 0000000020000100
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_perf_trace_block_buffer include/trace/events/block.h:24 [inline]
RIP: 0010:perf_trace_block_buffer+0x293/0x490 include/trace/events/block.h:24
Code: 24 18 48 8d 58 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 db 03 65 fd 4c 8b 3b 49 83 c7 34 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 6c 01 00 00 45 8b 3f 49 8d 5c 24 08 48
RSP: 0018:ffffc9000d4579e0 EFLAGS: 00010207
RAX: 0000000000000006 RBX: ffff888043b41dc8 RCX: 0000000000100000
RDX: ffffc9000e1d2000 RSI: 00000000000029d6 RDI: ffff88801fc37768
RBP: ffffc9000d457ac8 R08: ffffffff81a9171b R09: 1ffffffff203305e
R10: dffffc0000000000 R11: fffffbfff203305f R12: ffffe8ffffc48780
R13: dffffc0000000000 R14: ffff88801fc376e0 R15: 0000000000000034
FS: 00007f5734ee96c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a31c654678 CR3: 000000003a2ac000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 24 18 and $0x18,%al
2: 48 8d 58 30 lea 0x30(%rax),%rbx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
12: 74 08 je 0x1c
14: 48 89 df mov %rbx,%rdi
17: e8 db 03 65 fd call 0xfd6503f7
1c: 4c 8b 3b mov (%rbx),%r15
1f: 49 83 c7 34 add $0x34,%r15
23: 4c 89 f8 mov %r15,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 6c 01 00 00 jne 0x1a3
37: 45 8b 3f mov (%r15),%r15d
3a: 49 8d 5c 24 08 lea 0x8(%r12),%rbx
3f: 48 rex.W