loop4: detected capacity change from 0 to 2048
------------[ cut here ]------------
strnlen: detected buffer overflow: 65 byte read of buffer size 64
WARNING: lib/string_helpers.c:1035 at __fortify_report+0x97/0xb0, CPU#1: syz-executor.4/5370
Modules linked in:
CPU: 1 UID: 0 PID: 5370 Comm: syz-executor.4 Not tainted 6.18.0-rc4-next-20251103 #1 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:__fortify_report+0x97/0xb0
Code: 85 49 c7 c5 20 fa 02 85 4c 0f 45 e9 e8 32 48 20 ff 49 89 e8 4c 89 e2 4c 89 f6 4c 89 e9 48 c7 c7 a0 fa 02 85 e8 2a b7 e5 fe 90 <0f> 0b 90 90 5b 5d 41 5c 41 5d 41 5e e9 28 9c 71 02 e8 33 43 5d ff
RSP: 0018:ffff88804a3cfa30 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc90003c33000
RDX: 0000000000040000 RSI: ffffffff8139efae RDI: 0000000000000001
RBP: 0000000000000040 R08: 0000000000000001 R09: ffffed1009479efd
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000041
R13: ffffffff8502fa20 R14: ffffffff850303e0 R15: ffff888016e0c000
FS: 00007faf7f820700(0000) GS:ffff8880e54a8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d028000 CR3: 000000001ff23000 CR4: 0000000000350ef0
Call Trace:
__fortify_panic+0x23/0x30
ext4_fill_super+0x368f/0xb910
get_tree_bdev_flags+0x38a/0x620
vfs_get_tree+0x93/0x340
path_mount+0x726/0x2140
__x64_sys_mount+0x293/0x310
do_syscall_64+0xbf/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faf822ac04a
Code: 48 c7 c2 bc 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007faf7f81ffa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007faf822ac04a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007faf7f820000
RBP: 00007faf7f820040 R08: 00007faf7f820040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007faf7f820000 R15: 0000000020014100
irq event stamp: 2317
hardirqs last enabled at (2329): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (2338): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (2296): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (1931): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
kernel BUG at lib/string_helpers.c:1043!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 5370 Comm: syz-executor.4 Tainted: G W 6.18.0-rc4-next-20251103 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:__fortify_panic+0x24/0x30
Code: 90 90 90 90 90 90 f3 0f 1e fa 41 54 49 89 d4 55 48 89 f5 53 89 fb e8 db 47 20 ff 0f b6 fb 4c 89 e2 48 89 ee e8 1d ff ff ff 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffff88804a3cfa60 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffc90003c33000
RDX: 0000000000040000 RSI: ffffffff8139efae RDI: 0000000000000001
RBP: 0000000000000040 R08: 0000000000000001 R09: ffffed1009479efd
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000041
R13: ffff88801fd71400 R14: ffff88801fd71400 R15: ffff888016e0c000
FS: 00007faf7f820700(0000) GS:ffff8880e54a8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d028000 CR3: 000000001ff23000 CR4: 0000000000350ef0
Call Trace:
ext4_fill_super+0x368f/0xb910
get_tree_bdev_flags+0x38a/0x620
vfs_get_tree+0x93/0x340
path_mount+0x726/0x2140
__x64_sys_mount+0x293/0x310
do_syscall_64+0xbf/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faf822ac04a
Code: 48 c7 c2 bc 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007faf7f81ffa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007faf822ac04a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007faf7f820000
RBP: 00007faf7f820040 R08: 00007faf7f820040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007faf7f820000 R15: 0000000020014100
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__fortify_panic+0x24/0x30
Code: 90 90 90 90 90 90 f3 0f 1e fa 41 54 49 89 d4 55 48 89 f5 53 89 fb e8 db 47 20 ff 0f b6 fb 4c 89 e2 48 89 ee e8 1d ff ff ff 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffff88804a3cfa60 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffc90003c33000
RDX: 0000000000040000 RSI: ffffffff8139efae RDI: 0000000000000001
RBP: 0000000000000040 R08: 0000000000000001 R09: ffffed1009479efd
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000041
R13: ffff88801fd71400 R14: ffff88801fd71400 R15: ffff888016e0c000
FS: 00007faf7f820700(0000) GS:ffff8880e54a8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d028000 CR3: 000000001ff23000 CR4: 0000000000350ef0
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 5381 Comm: syz-executor.5 Tainted: G D W 6.18.0-rc4-next-20251103 #1 PREEMPT(voluntary)
Tainted: [D]=DIE, [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xfa/0x120
should_fail_ex+0x4d7/0x5e0
_copy_to_user+0x32/0xd0
simple_read_from_buffer+0xe0/0x180
proc_fail_nth_read+0x18a/0x240
vfs_read+0x1eb/0xc70
ksys_read+0x121/0x240
do_syscall_64+0xbf/0x3f0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5c7be8b69c
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 2f fd ff ff 48
RSP: 002b:00007f5c7944e170 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5c7be8b69c
RDX: 000000000000000f RSI: 00007f5c7944e1e0 RDI: 0000000000000004
RBP: 00007f5c7944e1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe00f9249f R14: 00007f5c7944e300 R15: 0000000000022000
tmpfs: Invalid gid '0x00000000ffffffff'
tmpfs: Invalid gid '0x00000000ffffffff'
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=42 sclass=netlink_audit_socket pid=5389 comm=syz-executor.6
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=42 sclass=netlink_audit_socket pid=5389 comm=syz-executor.6
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=63 sclass=netlink_audit_socket pid=5389 comm=syz-executor.6
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=63 sclass=netlink_audit_socket pid=5389 comm=syz-executor.6
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=24 sclass=netlink_audit_socket pid=5389 comm=syz-executor.6
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=56 sclass=netlink_audit_socket pid=5389 comm=syz-executor.6
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=43 sclass=netlink_audit_socket pid=5389 comm=syz-executor.6
tmpfs: Invalid gid '0x00000000ffffffff'
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.6'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.6'.
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=42 sclass=netlink_audit_socket pid=5389 comm=syz-executor.6
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=42 sclass=netlink_audit_socket pid=5389 comm=syz-executor.6
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=63 sclass=netlink_audit_socket pid=5389 comm=syz-executor.6
kmemleak: 6 new suspected memory leaks (see /sys/kernel/debug/kmemleak)