RBP: 00007fdaeb870024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdaeba61038 R14: 00007fdaeba60fa0 R15: 00007ffc678fb008
---[ end trace c5c6026089df4db8 ]---
==================================================================
BUG: KASAN: use-after-free in rb_buffer_peek+0x71a/0x7a0 kernel/trace/ring_buffer.c:4746
Read of size 4 at addr ffff888121a3306d by task syz.4.122/746
CPU: 1 PID: 746 Comm: syz.4.122 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
__dump_stack+0x21/0x30 lib/dump_stack.c:88
dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:427 [inline]
kasan_report+0x10f/0x150 mm/kasan/report.c:444
__asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
rb_buffer_peek+0x71a/0x7a0 kernel/trace/ring_buffer.c:4746
ring_buffer_peek+0x184/0x3b0 kernel/trace/ring_buffer.c:4940
peek_next_entry kernel/trace/trace.c:3571 [inline]
__find_next_entry+0x34d/0x6b0 kernel/trace/trace.c:3615
trace_find_next_entry_inc kernel/trace/trace.c:3996 [inline]
tracing_read_pipe+0x3b8/0xab0 kernel/trace/trace.c:6821
vfs_read+0x28c/0xc20 fs/read_write.c:483
ksys_read+0x14a/0x260 fs/read_write.c:623
__do_sys_read fs/read_write.c:633 [inline]
__se_sys_read fs/read_write.c:631 [inline]
__x64_sys_read+0x7b/0x90 fs/read_write.c:631
x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdaeb7d9159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdaea232028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fdaeba60fa0 RCX: 00007fdaeb7d9159
RDX: 0000000000002000 RSI: 0000200000004000 RDI: 0000000000000006
RBP: 00007fdaeb870024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdaeba61038 R14: 00007fdaeba60fa0 R15: 00007ffc678fb008
The buggy address belongs to the page:
page:ffffea0004868cc0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x121a33
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 ffffea0004868d08 ffffea0004868c88 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 283, ts 23621865202, free_ts 41986542305
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2607
prep_new_page+0x1c/0x110 mm/page_alloc.c:2613
get_page_from_freelist+0x2c3a/0x2cd0 mm/page_alloc.c:4487
__alloc_pages+0x1a2/0x460 mm/page_alloc.c:5824
vm_area_alloc_pages mm/vmalloc.c:-1 [inline]
__vmalloc_area_node mm/vmalloc.c:2981 [inline]
__vmalloc_node_range+0x507/0xad0 mm/vmalloc.c:3147
vmalloc_user+0x73/0x80 mm/vmalloc.c:3298
kcov_mmap+0x2b/0x130 kernel/kcov.c:474
call_mmap include/linux/fs.h:2217 [inline]
mmap_file+0x60/0xb0 mm/util.c:1099
__mmap_region mm/mmap.c:1808 [inline]
mmap_region+0xe42/0x1700 mm/mmap.c:2959
do_mmap+0x812/0xf10 mm/mmap.c:1598
vm_mmap_pgoff+0x1d6/0x410 mm/util.c:555
ksys_mmap_pgoff+0x161/0x1d0 mm/mmap.c:1647
__do_sys_mmap arch/x86/kernel/sys_x86_64.c:93 [inline]
__se_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline]
__x64_sys_mmap+0xfa/0x110 arch/x86/kernel/sys_x86_64.c:86
x64_sys_call+0x83/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:10
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
page last free stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1474 [inline]
free_pcp_prepare mm/page_alloc.c:1546 [inline]
free_unref_page_prepare+0x5fa/0x600 mm/page_alloc.c:3536
free_unref_page+0xae/0x540 mm/page_alloc.c:3618
free_the_page mm/page_alloc.c:805 [inline]
__free_pages+0x6c/0x100 mm/page_alloc.c:5900
__vunmap+0x801/0x980 mm/vmalloc.c:2660
__vfree mm/vmalloc.c:2709 [inline]
vfree+0x8b/0xc0 mm/vmalloc.c:2740
kcov_put kernel/kcov.c:417 [inline]
kcov_close+0x2b/0x50 kernel/kcov.c:519
__fput+0x22b/0x900 fs/file_table.c:311
____fput+0x15/0x20 fs/file_table.c:339
task_work_run+0x127/0x190 kernel/task_work.c:188
exit_task_work include/linux/task_work.h:33 [inline]
do_exit+0xb70/0x29a0 kernel/exit.c:890
do_group_exit+0x149/0x310 kernel/exit.c:1004
__do_sys_exit_group kernel/exit.c:1015 [inline]
__se_sys_exit_group kernel/exit.c:1013 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1013
x64_sys_call+0x832/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
Memory state around the buggy address:
ffff888121a32f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff888121a32f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888121a33000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff888121a33080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff888121a33100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
------------[ cut here ]------------
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 arch_atomic_inc include/linux/instrumented.h:101 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 atomic_inc include/linux/atomic/atomic-instrumented.h:182 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Modules linked in:
CPU: 1 PID: 746 Comm: syz.4.122 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Code: 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 dd 2e 3d 00 48 8b 1b 48 8d 7b 08 be 04 00 00 00 e8 cc 30 3d 00 f0 ff 43 08 <0f> 0b 4c 8b 64 24 38 4d 85 e4 74 3d 43 0f b6 44 3d 00 84 c0 0f 85
RSP: 0018:ffffc90000ae77a0 EFLAGS: 00010002
RAX: 1ffff11020031a01 RBX: ffff888100052600 RCX: ffffffff816bf854
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888100052608
RBP: ffffc90000ae7910 R08: ffff88810005260b R09: 1ffff1102000a4c1
R10: dffffc0000000000 R11: ffffed102000a4c2 R12: 000000002169005d
R13: 1ffff11020070433 R14: 1ffff11020070436 R15: dffffc0000000000
FS: 00007fdaea2326c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ee19ff8 CR3: 000000012fd4f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rb_advance_reader+0x2b/0x6b0 kernel/trace/ring_buffer.c:4668
rb_buffer_peek+0x43a/0x7a0 kernel/trace/ring_buffer.c:-1
ring_buffer_peek+0x184/0x3b0 kernel/trace/ring_buffer.c:4940
peek_next_entry kernel/trace/trace.c:3571 [inline]
__find_next_entry+0x34d/0x6b0 kernel/trace/trace.c:3615
trace_find_next_entry_inc kernel/trace/trace.c:3996 [inline]
tracing_read_pipe+0x3b8/0xab0 kernel/trace/trace.c:6821
vfs_read+0x28c/0xc20 fs/read_write.c:483
ksys_read+0x14a/0x260 fs/read_write.c:623
__do_sys_read fs/read_write.c:633 [inline]
__se_sys_read fs/read_write.c:631 [inline]
__x64_sys_read+0x7b/0x90 fs/read_write.c:631
x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdaeb7d9159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdaea232028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fdaeba60fa0 RCX: 00007fdaeb7d9159
RDX: 0000000000002000 RSI: 0000200000004000 RDI: 0000000000000006
RBP: 00007fdaeb870024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdaeba61038 R14: 00007fdaeba60fa0 R15: 00007ffc678fb008
---[ end trace c5c6026089df4db9 ]---
------------[ cut here ]------------
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 arch_atomic_inc include/linux/instrumented.h:101 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 atomic_inc include/linux/atomic/atomic-instrumented.h:182 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Modules linked in:
CPU: 1 PID: 746 Comm: syz.4.122 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Code: 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 dd 2e 3d 00 48 8b 1b 48 8d 7b 08 be 04 00 00 00 e8 cc 30 3d 00 f0 ff 43 08 <0f> 0b 4c 8b 64 24 38 4d 85 e4 74 3d 43 0f b6 44 3d 00 84 c0 0f 85
RSP: 0018:ffffc90000ae77e0 EFLAGS: 00010006
RAX: 1ffff11020031a01 RBX: ffff888100052600 RCX: ffffffff816bf854
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888100052608
RBP: ffffc90000ae7958 R08: ffff88810005260b R09: 1ffff1102000a4c1
R10: dffffc0000000000 R11: ffffed102000a4c2 R12: 0000000021690065
R13: 1ffff11020070433 R14: 1ffff11020070436 R15: dffffc0000000000
FS: 00007fdaea2326c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ee19ff8 CR3: 000000012fd4f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rb_buffer_peek+0x442/0x7a0 kernel/trace/ring_buffer.c:4740
ring_buffer_peek+0x184/0x3b0 kernel/trace/ring_buffer.c:4940
peek_next_entry kernel/trace/trace.c:3571 [inline]
__find_next_entry+0x34d/0x6b0 kernel/trace/trace.c:3615
trace_find_next_entry_inc kernel/trace/trace.c:3996 [inline]
tracing_read_pipe+0x3b8/0xab0 kernel/trace/trace.c:6821
vfs_read+0x28c/0xc20 fs/read_write.c:483
ksys_read+0x14a/0x260 fs/read_write.c:623
__do_sys_read fs/read_write.c:633 [inline]
__se_sys_read fs/read_write.c:631 [inline]
__x64_sys_read+0x7b/0x90 fs/read_write.c:631
x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdaeb7d9159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdaea232028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fdaeba60fa0 RCX: 00007fdaeb7d9159
RDX: 0000000000002000 RSI: 0000200000004000 RDI: 0000000000000006
RBP: 00007fdaeb870024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdaeba61038 R14: 00007fdaeba60fa0 R15: 00007ffc678fb008
---[ end trace c5c6026089df4dba ]---
------------[ cut here ]------------
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 arch_atomic_inc include/linux/instrumented.h:101 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 atomic_inc include/linux/atomic/atomic-instrumented.h:182 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Modules linked in:
CPU: 1 PID: 746 Comm: syz.4.122 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Code: 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 dd 2e 3d 00 48 8b 1b 48 8d 7b 08 be 04 00 00 00 e8 cc 30 3d 00 f0 ff 43 08 <0f> 0b 4c 8b 64 24 38 4d 85 e4 74 3d 43 0f b6 44 3d 00 84 c0 0f 85
RSP: 0018:ffffc90000ae77a0 EFLAGS: 00010002
RAX: 1ffff11020031a01 RBX: ffff888100052600 RCX: ffffffff816bf854
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888100052608
RBP: ffffc90000ae7910 R08: ffff88810005260b R09: 1ffff1102000a4c1
R10: dffffc0000000000 R11: ffffed102000a4c2 R12: 0000000021690065
R13: 1ffff11020070433 R14: 1ffff11020070436 R15: dffffc0000000000
FS: 00007fdaea2326c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ee19ff8 CR3: 000000012fd4f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rb_advance_reader+0x2b/0x6b0 kernel/trace/ring_buffer.c:4668
rb_buffer_peek+0x6a4/0x7a0 kernel/trace/ring_buffer.c:-1
ring_buffer_peek+0x184/0x3b0 kernel/trace/ring_buffer.c:4940
peek_next_entry kernel/trace/trace.c:3571 [inline]
__find_next_entry+0x34d/0x6b0 kernel/trace/trace.c:3615
trace_find_next_entry_inc kernel/trace/trace.c:3996 [inline]
tracing_read_pipe+0x3b8/0xab0 kernel/trace/trace.c:6821
vfs_read+0x28c/0xc20 fs/read_write.c:483
ksys_read+0x14a/0x260 fs/read_write.c:623
__do_sys_read fs/read_write.c:633 [inline]
__se_sys_read fs/read_write.c:631 [inline]
__x64_sys_read+0x7b/0x90 fs/read_write.c:631
x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdaeb7d9159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdaea232028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fdaeba60fa0 RCX: 00007fdaeb7d9159
RDX: 0000000000002000 RSI: 0000200000004000 RDI: 0000000000000006
RBP: 00007fdaeb870024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdaeba61038 R14: 00007fdaeba60fa0 R15: 00007ffc678fb008
---[ end trace c5c6026089df4dbb ]---
------------[ cut here ]------------
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4737 arch_atomic_inc include/linux/instrumented.h:101 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4737 atomic_inc include/linux/atomic/atomic-instrumented.h:182 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4737 rb_buffer_peek+0x6dd/0x7a0 kernel/trace/ring_buffer.c:4737
Modules linked in:
CPU: 1 PID: 746 Comm: syz.4.122 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:rb_buffer_peek+0x6dd/0x7a0 kernel/trace/ring_buffer.c:4737
Code: 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ef e8 19 7e 3d 00 49 8b 5d 00 48 8d 7b 08 be 04 00 00 00 e8 07 80 3d 00 f0 ff 43 08 <0f> 0b 45 31 e4 e9 29 fd ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c
RSP: 0018:ffffc90000ae7968 EFLAGS: 00010006
RAX: 1ffff11020031a01 RBX: ffff888100052600 RCX: ffffffff816ba919
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888100052608
RBP: ffffc90000ae79b0 R08: ffff88810005260b R09: 1ffff1102000a4c1
R10: dffffc0000000000 R11: ffffed102000a4c2 R12: ffff888121a33079
R13: ffff88810018d010 R14: ffffc90000ae7b80 R15: 07fc13831eefffff
FS: 00007fdaea2326c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ee19ff8 CR3: 000000012fd4f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ring_buffer_peek+0x184/0x3b0 kernel/trace/ring_buffer.c:4940
peek_next_entry kernel/trace/trace.c:3571 [inline]
__find_next_entry+0x34d/0x6b0 kernel/trace/trace.c:3615
trace_find_next_entry_inc kernel/trace/trace.c:3996 [inline]
tracing_read_pipe+0x3b8/0xab0 kernel/trace/trace.c:6821
vfs_read+0x28c/0xc20 fs/read_write.c:483
ksys_read+0x14a/0x260 fs/read_write.c:623
__do_sys_read fs/read_write.c:633 [inline]
__se_sys_read fs/read_write.c:631 [inline]
__x64_sys_read+0x7b/0x90 fs/read_write.c:631
x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdaeb7d9159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdaea232028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fdaeba60fa0 RCX: 00007fdaeb7d9159
RDX: 0000000000002000 RSI: 0000200000004000 RDI: 0000000000000006
RBP: 00007fdaeb870024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdaeba61038 R14: 00007fdaeba60fa0 R15: 00007ffc678fb008
---[ end trace c5c6026089df4dbc ]---
------------[ cut here ]------------
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 arch_atomic_inc include/linux/instrumented.h:101 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 atomic_inc include/linux/atomic/atomic-instrumented.h:182 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Modules linked in:
CPU: 1 PID: 746 Comm: syz.4.122 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Code: 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 dd 2e 3d 00 48 8b 1b 48 8d 7b 08 be 04 00 00 00 e8 cc 30 3d 00 f0 ff 43 08 <0f> 0b 4c 8b 64 24 38 4d 85 e4 74 3d 43 0f b6 44 3d 00 84 c0 0f 85
RSP: 0018:ffffc90000ae77e0 EFLAGS: 00010006
RAX: 1ffff11020031a01 RBX: ffff888100052600 RCX: ffffffff816bf854
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888100052608
RBP: ffffc90000ae7958 R08: ffff88810005260b R09: 1ffff1102000a4c1
R10: dffffc0000000000 R11: ffffed102000a4c2 R12: 000000002169006d
R13: 1ffff11020070433 R14: 1ffff11020070436 R15: dffffc0000000000
FS: 00007fdaea2326c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000012fd4f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rb_buffer_peek+0x60/0x7a0 kernel/trace/ring_buffer.c:4740
ring_buffer_peek+0x184/0x3b0 kernel/trace/ring_buffer.c:4940
peek_next_entry kernel/trace/trace.c:3571 [inline]
__find_next_entry+0x34d/0x6b0 kernel/trace/trace.c:3615
trace_find_next_entry_inc kernel/trace/trace.c:3996 [inline]
tracing_read_pipe+0x3b8/0xab0 kernel/trace/trace.c:6821
vfs_read+0x28c/0xc20 fs/read_write.c:483
ksys_read+0x14a/0x260 fs/read_write.c:623
__do_sys_read fs/read_write.c:633 [inline]
__se_sys_read fs/read_write.c:631 [inline]
__x64_sys_read+0x7b/0x90 fs/read_write.c:631
x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdaeb7d9159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdaea232028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fdaeba60fa0 RCX: 00007fdaeb7d9159
RDX: 0000000000002000 RSI: 0000200000004000 RDI: 0000000000000006
RBP: 00007fdaeb870024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdaeba61038 R14: 00007fdaeba60fa0 R15: 00007ffc678fb008
---[ end trace c5c6026089df4dbd ]---
------------[ cut here ]------------
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 arch_atomic_inc include/linux/instrumented.h:101 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 atomic_inc include/linux/atomic/atomic-instrumented.h:182 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Modules linked in:
CPU: 1 PID: 746 Comm: syz.4.122 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Code: 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 dd 2e 3d 00 48 8b 1b 48 8d 7b 08 be 04 00 00 00 e8 cc 30 3d 00 f0 ff 43 08 <0f> 0b 4c 8b 64 24 38 4d 85 e4 74 3d 43 0f b6 44 3d 00 84 c0 0f 85
RSP: 0018:ffffc90000ae77a0 EFLAGS: 00010002
RAX: 1ffff11020031a01 RBX: ffff888100052600 RCX: ffffffff816bf854
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888100052608
RBP: ffffc90000ae7910 R08: ffff88810005260b R09: 1ffff1102000a4c1
R10: dffffc0000000000 R11: ffffed102000a4c2 R12: 000000002169006d
R13: 1ffff11020070433 R14: 1ffff11020070436 R15: dffffc0000000000
FS: 00007fdaea2326c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000012fd4f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rb_advance_reader+0x2b/0x6b0 kernel/trace/ring_buffer.c:4668
rb_buffer_peek+0x43a/0x7a0 kernel/trace/ring_buffer.c:-1
ring_buffer_peek+0x184/0x3b0 kernel/trace/ring_buffer.c:4940
peek_next_entry kernel/trace/trace.c:3571 [inline]
__find_next_entry+0x34d/0x6b0 kernel/trace/trace.c:3615
trace_find_next_entry_inc kernel/trace/trace.c:3996 [inline]
tracing_read_pipe+0x3b8/0xab0 kernel/trace/trace.c:6821
vfs_read+0x28c/0xc20 fs/read_write.c:483
ksys_read+0x14a/0x260 fs/read_write.c:623
__do_sys_read fs/read_write.c:633 [inline]
__se_sys_read fs/read_write.c:631 [inline]
__x64_sys_read+0x7b/0x90 fs/read_write.c:631
x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdaeb7d9159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdaea232028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fdaeba60fa0 RCX: 00007fdaeb7d9159
RDX: 0000000000002000 RSI: 0000200000004000 RDI: 0000000000000006
RBP: 00007fdaeb870024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdaeba61038 R14: 00007fdaeba60fa0 R15: 00007ffc678fb008
---[ end trace c5c6026089df4dbe ]---
------------[ cut here ]------------
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 arch_atomic_inc include/linux/instrumented.h:101 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 atomic_inc include/linux/atomic/atomic-instrumented.h:182 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Modules linked in:
CPU: 1 PID: 746 Comm: syz.4.122 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Code: 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 dd 2e 3d 00 48 8b 1b 48 8d 7b 08 be 04 00 00 00 e8 cc 30 3d 00 f0 ff 43 08 <0f> 0b 4c 8b 64 24 38 4d 85 e4 74 3d 43 0f b6 44 3d 00 84 c0 0f 85
RSP: 0018:ffffc90000ae77e0 EFLAGS: 00010002
RAX: 1ffff11020031a01 RBX: ffff888100052600 RCX: ffffffff816bf854
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888100052608
RBP: ffffc90000ae7958 R08: ffff88810005260b R09: 1ffff1102000a4c1
R10: dffffc0000000000 R11: ffffed102000a4c2 R12: 0000000021690075
R13: 1ffff11020070433 R14: 1ffff11020070436 R15: dffffc0000000000
FS: 00007fdaea2326c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000012fd4f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rb_buffer_peek+0x442/0x7a0 kernel/trace/ring_buffer.c:4740
ring_buffer_peek+0x184/0x3b0 kernel/trace/ring_buffer.c:4940
peek_next_entry kernel/trace/trace.c:3571 [inline]
__find_next_entry+0x34d/0x6b0 kernel/trace/trace.c:3615
trace_find_next_entry_inc kernel/trace/trace.c:3996 [inline]
tracing_read_pipe+0x3b8/0xab0 kernel/trace/trace.c:6821
vfs_read+0x28c/0xc20 fs/read_write.c:483
ksys_read+0x14a/0x260 fs/read_write.c:623
__do_sys_read fs/read_write.c:633 [inline]
__se_sys_read fs/read_write.c:631 [inline]
__x64_sys_read+0x7b/0x90 fs/read_write.c:631
x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdaeb7d9159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdaea232028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fdaeba60fa0 RCX: 00007fdaeb7d9159
RDX: 0000000000002000 RSI: 0000200000004000 RDI: 0000000000000006
RBP: 00007fdaeb870024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdaeba61038 R14: 00007fdaeba60fa0 R15: 00007ffc678fb008
---[ end trace c5c6026089df4dbf ]---
------------[ cut here ]------------
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 arch_atomic_inc include/linux/instrumented.h:101 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 atomic_inc include/linux/atomic/atomic-instrumented.h:182 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4527 rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Modules linked in:
CPU: 1 PID: 746 Comm: syz.4.122 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:rb_get_reader_page+0xa68/0xc00 kernel/trace/ring_buffer.c:4526
Code: 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 dd 2e 3d 00 48 8b 1b 48 8d 7b 08 be 04 00 00 00 e8 cc 30 3d 00 f0 ff 43 08 <0f> 0b 4c 8b 64 24 38 4d 85 e4 74 3d 43 0f b6 44 3d 00 84 c0 0f 85
RSP: 0018:ffffc90000ae77a0 EFLAGS: 00010006
RAX: 1ffff11020031a01 RBX: ffff888100052600 RCX: ffffffff816bf854
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888100052608
RBP: ffffc90000ae7910 R08: ffff88810005260b R09: 1ffff1102000a4c1
R10: dffffc0000000000 R11: ffffed102000a4c2 R12: 0000000021690075
R13: 1ffff11020070433 R14: 1ffff11020070436 R15: dffffc0000000000
FS: 00007fdaea2326c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000012fd4f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rb_advance_reader+0x2b/0x6b0 kernel/trace/ring_buffer.c:4668
rb_buffer_peek+0x6a4/0x7a0 kernel/trace/ring_buffer.c:-1
ring_buffer_peek+0x184/0x3b0 kernel/trace/ring_buffer.c:4940
peek_next_entry kernel/trace/trace.c:3571 [inline]
__find_next_entry+0x34d/0x6b0 kernel/trace/trace.c:3615
trace_find_next_entry_inc kernel/trace/trace.c:3996 [inline]
tracing_read_pipe+0x3b8/0xab0 kernel/trace/trace.c:6821
vfs_read+0x28c/0xc20 fs/read_write.c:483
ksys_read+0x14a/0x260 fs/read_write.c:623
__do_sys_read fs/read_write.c:633 [inline]
__se_sys_read fs/read_write.c:631 [inline]
__x64_sys_read+0x7b/0x90 fs/read_write.c:631
x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdaeb7d9159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdaea232028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fdaeba60fa0 RCX: 00007fdaeb7d9159
RDX: 0000000000002000 RSI: 0000200000004000 RDI: 0000000000000006
RBP: 00007fdaeb870024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdaeba61038 R14: 00007fdaeba60fa0 R15: 00007ffc678fb008
---[ end trace c5c6026089df4dc0 ]---
------------[ cut here ]------------
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4737 arch_atomic_inc include/linux/instrumented.h:101 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4737 atomic_inc include/linux/atomic/atomic-instrumented.h:182 [inline]
WARNING: CPU: 1 PID: 746 at kernel/trace/ring_buffer.c:4737 rb_buffer_peek+0x6dd/0x7a0 kernel/trace/ring_buffer.c:4737
Modules linked in:
CPU: 1 PID: 746 Comm: syz.4.122 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:rb_buffer_peek+0x6dd/0x7a0 kernel/trace/ring_buffer.c:4737
Code: 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ef e8 19 7e 3d 00 49 8b 5d 00 48 8d 7b 08 be 04 00 00 00 e8 07 80 3d 00 f0 ff 43 08 <0f> 0b 45 31 e4 e9 29 fd ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c
RSP: 0018:ffffc90000ae7968 EFLAGS: 00010006
RAX: 1ffff11020031a01 RBX: ffff888100052600 RCX: ffffffff816ba919
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888100052608
RBP: ffffc90000ae79b0 R08: ffff88810005260b R09: 1ffff1102000a4c1
R10: dffffc0000000000 R11: ffffed102000a4c2 R12: ffff888121a33089
R13: ffff88810018d010 R14: ffffc90000ae7b80 R15: 07fc13831eefffff
FS: 00007fdaea2326c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000012fd4f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ring_buffer_peek+0x184/0x3b0 kernel/trace/ring_buffer.c:4940
peek_next_entry kernel/trace/trace.c:3571 [inline]
__find_next_entry+0x34d/0x6b0 kernel/trace/trace.c:3615
trace_find_next_entry_inc kernel/trace/trace.c:3996 [inline]
tracing_read_pipe+0x3b8/0xab0 kernel/trace/trace.c:6821
vfs_read+0x28c/0xc20 fs/read_write.c:483
ksys_read+0x14a/0x260 fs/read_write.c:623
__do_sys_read fs/read_write.c:633 [inline]
__se_sys_read fs/read_write.c:631 [inline]
__x64_sys_read+0x7b/0x90 fs/read_write.c:631
x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdaeb7d9159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdaea232028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fdaeba60fa0 RCX: 00007fdaeb7d9159
RDX: 0000000000002000 RSI: 0000200000004000 RDI: 0000000000000006
RBP: 00007fdaeb870024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdaeba61038 R14: 00007fdaeba60fa0 R15: 00007ffc678fb008
---[ end trace c5c6026089df4dc1 ]---