==================================================================
BUG: KASAN: slab-use-after-free in copy_tree+0xa2e/0xaf0
Write of size 8 at addr ffff88801ff2c100 by task syz-executor.5/4023
CPU: 1 UID: 0 PID: 4023 Comm: syz-executor.5 Tainted: G W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xca/0x120
print_report+0xcb/0x610
kasan_report+0xca/0x100
copy_tree+0xa2e/0xaf0
copy_mnt_ns+0x1ab/0xab0
create_new_namespaces+0xd6/0xab0
copy_namespaces+0x45c/0x580
copy_process+0x2649/0x73c0
kernel_clone+0xea/0x7f0
__do_sys_clone3+0x1f5/0x280
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f40a65f5b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f40a3b4a188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007f40a6709020 RCX: 00007f40a65f5b19
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200001c0
RBP: 00007f40a664ff6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff361232ff R14: 00007f40a3b4a300 R15: 0000000000022000
Allocated by task 4008:
kasan_save_stack+0x24/0x50
kasan_save_track+0x14/0x30
__kasan_slab_alloc+0x59/0x70
kmem_cache_alloc_noprof+0x205/0x690
alloc_vfsmnt+0x23/0x6e0
clone_mnt+0x6c/0xb70
copy_tree+0x34b/0xaf0
copy_mnt_ns+0x1ab/0xab0
create_new_namespaces+0xd6/0xab0
copy_namespaces+0x45c/0x580
copy_process+0x2649/0x73c0
kernel_clone+0xea/0x7f0
__do_sys_clone3+0x1f5/0x280
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 22:
kasan_save_stack+0x24/0x50
kasan_save_track+0x14/0x30
__kasan_save_free_info+0x3a/0x60
__kasan_slab_free+0x3f/0x50
kmem_cache_free+0x2a1/0x540
rcu_core+0x7c8/0x1800
handle_softirqs+0x1b1/0x770
run_ksoftirqd+0x2e/0x60
smpboot_thread_fn+0x41d/0x9d0
kthread+0x3c8/0x740
ret_from_fork+0x34b/0x430
ret_from_fork_asm+0x1a/0x30
Last potentially related work creation:
kasan_save_stack+0x24/0x50
kasan_record_aux_stack+0x89/0xa0
__call_rcu_common.constprop.0+0x70/0x960
task_work_run+0x172/0x280
exit_to_user_mode_loop+0xef/0x110
do_syscall_64+0x2f7/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Second to last potentially related work creation:
kasan_save_stack+0x24/0x50
kasan_record_aux_stack+0x89/0xa0
task_work_add+0x23f/0x340
mntput_no_expire+0x5f4/0xbe0
mntput+0x6b/0x90
exit_fs+0xfd/0x170
copy_process+0x279d/0x73c0
kernel_clone+0xea/0x7f0
__do_sys_clone3+0x1f5/0x280
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff88801ff2c000
which belongs to the cache mnt_cache of size 352
The buggy address is located 256 bytes inside of
freed 352-byte region [ffff88801ff2c000, ffff88801ff2c160)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ff2c
head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88801ff22901
flags: 0x100000000000040(head|node=0|zone=1)
page_type: f5(slab)
raw: 0100000000000040 ffff888009415780 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080120012 00000000f5000000 ffff88801ff22901
head: 0100000000000040 ffff888009415780 dead000000000122 0000000000000000
head: 0000000000000000 0000000080120012 00000000f5000000 ffff88801ff22901
head: 0100000000000001 ffffea00007fcb01 00000000ffffffff 00000000ffffffff
head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000002
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88801ff2c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88801ff2c080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88801ff2c100: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
^
ffff88801ff2c180: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
ffff88801ff2c200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
loop4: detected capacity change from 0 to 2048
loop2: detected capacity change from 0 to 2048
EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000.
------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#1: syz-executor.5/4023
Modules linked in:
CPU: 1 UID: 0 PID: 4023 Comm: syz-executor.5 Tainted: G B W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
Tainted: [B]=BAD_PAGE, [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:mntput_no_expire+0x78e/0xbe0
Code: 05 d6 30 81 04 01 e8 71 df 91 ff e9 41 fc ff ff e8 27 47 b4 ff 31 ff 44 89 ee e8 4d 42 b4 ff 45 85 ed 79 09 e8 13 47 b4 ff 90 <0f> 0b 90 e8 0a 47 b4 ff e8 b5 2d fc 02 31 ff 89 c5 89 c6 e8 2a 42
RSP: 0018:ffff888015bef878 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 1ffff11002b7df14 RCX: ffffc900025ec000
RDX: 0000000000040000 RSI: ffffffff81bfaf9d RDI: 0000000000000005
RBP: ffff88801ff2c8c0 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000000 R12: ffff888015bef8e0
R13: 00000000ffffffff R14: dead000000000100 R15: ffff88801ff2c8c0
FS: 00007f40a3b4a700(0000) GS:ffff8880e56d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555f391c98 CR3: 000000001e7ca000 CR4: 0000000000350ef0
Call Trace:
namespace_unlock+0x7f1/0x810
put_mnt_ns+0xf5/0x120
free_nsproxy+0x3a/0x400
switch_task_namespaces+0xe2/0x100
copy_process+0x26c8/0x73c0
kernel_clone+0xea/0x7f0
__do_sys_clone3+0x1f5/0x280
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f40a65f5b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f40a3b4a188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007f40a6709020 RCX: 00007f40a65f5b19
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200001c0
RBP: 00007f40a664ff6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff361232ff R14: 00007f40a3b4a300 R15: 0000000000022000
irq event stamp: 1965
hardirqs last enabled at (1965): [] irqentry_exit+0x3b/0x90
hardirqs last disabled at (1964): [] handle_softirqs+0x633/0x770
softirqs last enabled at (1098): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (947): [] do_softirq+0x48/0x80
---[ end trace 0000000000000000 ]---
kmemleak: Found object by alias at 0x607f1a639c0c
CPU: 1 UID: 0 PID: 4023 Comm: syz-executor.5 Tainted: G B W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
Tainted: [B]=BAD_PAGE, [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xca/0x120
__lookup_object+0x94/0xb0
delete_object_full+0x27/0x70
free_percpu+0x30/0x1160
futex_hash_free+0x38/0xc0
mmput+0x2d3/0x390
do_exit+0x79d/0x2970
do_group_exit+0xd3/0x2a0
get_signal+0x2315/0x2340
arch_do_signal_or_restart+0x80/0x790
exit_to_user_mode_loop+0x8b/0x110
do_syscall_64+0x2f7/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f40a65f5b19
Code: Unable to access opcode bytes at 0x7f40a65f5aef.
RSP: 002b:00007f40a3b4a188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: fffffffffffffff7 RBX: 00007f40a6709020 RCX: 00007f40a65f5b19
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200001c0
RBP: 00007f40a664ff6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff361232ff R14: 00007f40a3b4a300 R15: 0000000000022000
kmemleak: Object (percpu) 0x607f1a639c08 (size 8):
kmemleak: comm "syz-executor.5", pid 4023, jiffies 4294812978
kmemleak: min_count = 1
kmemleak: count = 0
kmemleak: flags = 0x21
kmemleak: checksum = 0
kmemleak: backtrace:
pcpu_alloc_noprof+0x87a/0x1170
alloc_vfsmnt+0x135/0x6e0
clone_mnt+0x6c/0xb70
copy_tree+0x34b/0xaf0
copy_mnt_ns+0x1ab/0xab0
create_new_namespaces+0xd6/0xab0
copy_namespaces+0x45c/0x580
copy_process+0x2649/0x73c0
kernel_clone+0xea/0x7f0
__do_sys_clone3+0x1f5/0x280
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
kmemleak: Cannot insert 0x607f1a639c0c into the object search tree (overlaps existing)
CPU: 0 UID: 0 PID: 4065 Comm: syz-executor.6 Tainted: G B W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
Tainted: [B]=BAD_PAGE, [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xca/0x120
__link_object+0x190/0x210
__create_object+0x48/0x80
pcpu_alloc_noprof+0x87a/0x1170
__percpu_init_rwsem+0x2d/0x160
alloc_super+0x29e/0xb80
sget+0xed/0x6c0
v9fs_mount+0xfc/0x9e0
legacy_get_tree+0x109/0x220
vfs_get_tree+0x93/0x340
path_mount+0x132d/0x1dd0
__x64_sys_mount+0x27b/0x300
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fefc6103b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fefc3679188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fefc6216f60 RCX: 00007fefc6103b19
RDX: 0000000020000080 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00007fefc615df6d R08: 0000000020000200 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe9fc4fd1f R14: 00007fefc3679300 R15: 0000000000022000
kmemleak: Kernel memory leak detector disabled
kmemleak: Object (percpu) 0x607f1a639c08 (size 8):
kmemleak: comm "syz-executor.5", pid 4023, jiffies 4294812978
kmemleak: min_count = 1
kmemleak: count = 1
kmemleak: flags = 0x21
kmemleak: checksum = 0
kmemleak: backtrace:
pcpu_alloc_noprof+0x87a/0x1170
alloc_vfsmnt+0x135/0x6e0
clone_mnt+0x6c/0xb70
copy_tree+0x34b/0xaf0
copy_mnt_ns+0x1ab/0xab0
create_new_namespaces+0xd6/0xab0
copy_namespaces+0x45c/0x580
copy_process+0x2649/0x73c0
kernel_clone+0xea/0x7f0
__do_sys_clone3+0x1f5/0x280
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
loop2: detected capacity change from 0 to 2048
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000032: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000190-0x0000000000000197]
CPU: 0 UID: 0 PID: 4073 Comm: syz-executor.2 Tainted: G B W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
Tainted: [B]=BAD_PAGE, [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff888045dcf780 EFLAGS: 00010012
RAX: 0000000000000032 RBX: ffffffffffffffa1 RCX: ffffc900013e3000
RDX: 0000000000040000 RSI: ffffffff8189a4e7 RDI: 0000000000000191
RBP: ffff888045dcf9f0 R08: ffff88806ce31340 R09: ffffe8ffffc11bf0
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806ce31340 R15: dffffc0000000000
FS: 00007fca7b3d6700(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000020655000 CR4: 0000000000350ef0
Call Trace:
perf_trace_run_bpf_submit+0xef/0x180
perf_trace_preemptirq_template+0x259/0x430
trace_irq_enable.constprop.0+0xa6/0x100
trace_hardirqs_on+0x26/0x40
_raw_spin_unlock_irqrestore+0x2c/0x50
try_to_wake_up+0x8ae/0x11d0
wake_up_q+0xa1/0x130
futex_wake+0x47e/0x540
do_futex+0x26d/0x370
__x64_sys_futex+0x1c9/0x4d0
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fca7de60b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fca7b3d6218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fca7df73f68 RCX: 00007fca7de60b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fca7df73f6c
RBP: 00007fca7df73f60 R08: 000000000000000e R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fca7df73f6c
R13: 00007ffe6d29d6ff R14: 00007fca7b3d6300 R15: 0000000000022000
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff888045dcf780 EFLAGS: 00010012
RAX: 0000000000000032 RBX: ffffffffffffffa1 RCX: ffffc900013e3000
RDX: 0000000000040000 RSI: ffffffff8189a4e7 RDI: 0000000000000191
RBP: ffff888045dcf9f0 R08: ffff88806ce31340 R09: ffffe8ffffc11bf0
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806ce31340 R15: dffffc0000000000
FS: 00007fca7b3d6700(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000020655000 CR4: 0000000000350ef0
note: syz-executor.2[4073] exited with irqs disabled
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000032: 0000 [#2] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000190-0x0000000000000197]
CPU: 0 UID: 0 PID: 4073 Comm: syz-executor.2 Tainted: G B D W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
loop4: detected capacity change from 0 to 2048
Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff88806ce08b80 EFLAGS: 00010012
RAX: 0000000000000032 RBX: ffffffffffffffa1 RCX: 0000000000000002
RDX: ffff8880467e3700 RSI: ffffffff8189a4e7 RDI: 0000000000000191
RBP: ffff88806ce08df0 R08: ffff88806ce313e8 R09: ffffe8ffffc11bf0
R10: 0000000000000000 R11: ffff8880174dcc98 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806ce313e8 R15: dffffc0000000000
FS: 00007fca7b3d6700(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000020655000 CR4: 0000000000350ef0
Call Trace:
perf_trace_run_bpf_submit+0xef/0x180
perf_trace_preemptirq_template+0x259/0x430
trace_irq_enable.constprop.0+0xa6/0x100
trace_hardirqs_on+0x26/0x40
handle_softirqs+0x16e/0x770
__irq_exit_rcu+0xc4/0x100
irq_exit_rcu+0x9/0x20
sysvec_apic_timer_interrupt+0x70/0x80
asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:make_task_dead+0xa2/0x3b0
Code: 38 00 85 db 0f 84 21 01 00 00 e8 09 a6 38 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 57 a1 38 00 48 85 db 0f 84 17 01 00 00 e9 a5 38 00 31 ff 65 8b 1d 60 2f 49 06 81 e3 ff ff ff 7f 89 de
RSP: 0018:ffff888045dcff28 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff8880467e3700 RCX: ffffffff817c3ab6
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff813b5234
RBP: 000000000000000b R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8643b457 R11: 0000000000000001 R12: ffff8880467e3700
R13: 0000000000000000 R14: dffffc0000000032 R15: 0000000000000000
rewind_stack_and_make_dead+0x16/0x20
RIP: 0033:0x7fca7de60b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fca7b3d6218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fca7df73f68 RCX: 00007fca7de60b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fca7df73f6c
RBP: 00007fca7df73f60 R08: 000000000000000e R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fca7df73f6c
R13: 00007ffe6d29d6ff R14: 00007fca7b3d6300 R15: 0000000000022000
Modules linked in:
---[ end trace 0000000000000000 ]---
Oops: general protection fault, probably for non-canonical address 0xdffffc0020000032: 0000 [#3] SMP KASAN NOPTI
RIP: 0010:perf_tp_event+0x175/0xe70
KASAN: probably user-memory-access in range [0x0000000100000190-0x0000000100000197]
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
CPU: 1 UID: 0 PID: 4072 Comm: syz-executor.0 Tainted: G B D W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
RSP: 0018:ffff888045dcf780 EFLAGS: 00010012
Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN
RAX: 0000000000000032 RBX: ffffffffffffffa1 RCX: ffffc900013e3000
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RDX: 0000000000040000 RSI: ffffffff8189a4e7 RDI: 0000000000000191
RIP: 0010:perf_tp_event+0x175/0xe70
RBP: ffff888045dcf9f0 R08: ffff88806ce31340 R09: ffffe8ffffc11bf0
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
RSP: 0018:ffff88804609f780 EFLAGS: 00010012
R13: 0000000000000014 R14: ffff88806ce31340 R15: dffffc0000000000
FS: 00007fca7b3d6700(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
RDX: ffff888016b38000 RSI: ffffffff8189a4e7 RDI: 0000000100000190
CR2: 0000000000000000 CR3: 0000000020655000 CR4: 0000000000350ef0
RBP: ffff88804609f9f0 R08: ffff88806cf31340 R09: ffffe8ffffd11bf0
----------------
Code disassembly (best guess), 1 bytes skipped:
0: df 48 89 fisttps -0x77(%rax)
3: 85 a8 fd ff ff 48 test %ebp,0x48fffffd(%rax)
9: c1 e8 03 shr $0x3,%eax
c: 4c 01 e0 add %r12,%rax
f: 48 89 85 c8 fd ff ff mov %rax,-0x238(%rbp)
16: e8 c9 51 ea ff callq 0xffea51e4
1b: 48 8d bb f0 01 00 00 lea 0x1f0(%rbx),%rdi
22: 48 89 f8 mov %rdi,%rax
25: 48 c1 e8 03 shr $0x3,%rax
* 29: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 74 08 je 0x3a
32: 3c 03 cmp $0x3,%al
34: 0f 8e c5 0b 00 00 jle 0xbff
3a: 44 rex.R
3b: 8b .byte 0x8b
3c: ab stos %eax,%es:(%rdi)
3d: f0 lock
3e: 01 .byte 0x1