==================================================================
BUG: KASAN: slab-out-of-bounds in hlist_move_list include/linux/list.h:870 [inline]
BUG: KASAN: slab-out-of-bounds in __collect_expired_timers kernel/time/timer.c:1514 [inline]
BUG: KASAN: slab-out-of-bounds in collect_expired_timers kernel/time/timer.c:1749 [inline]
BUG: KASAN: slab-out-of-bounds in __run_timers+0x521/0xbe0 kernel/time/timer.c:1813
Write of size 8 at addr ffff8881e47eb1c8 by task syz-executor.4/3234
CPU: 0 PID: 3234 Comm: syz-executor.4 Not tainted 5.4.274-syzkaller-00016-gdd432c37afcd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1d8/0x241 lib/dump_stack.c:118
print_address_description+0x8c/0x600 mm/kasan/report.c:384
__kasan_report+0xf3/0x120 mm/kasan/report.c:516
kasan_report+0x30/0x60 mm/kasan/common.c:653
hlist_move_list include/linux/list.h:870 [inline]
__collect_expired_timers kernel/time/timer.c:1514 [inline]
collect_expired_timers kernel/time/timer.c:1749 [inline]
__run_timers+0x521/0xbe0 kernel/time/timer.c:1813
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830
__do_softirq+0x23b/0x6b7 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x195/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:538 [inline]
smp_apic_timer_interrupt+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:__sanitizer_cov_trace_pc+0x40/0x50 kernel/kcov.c:194
Code: 01 1f 00 74 01 c3 8b 91 00 0a 00 00 83 fa 02 75 f4 48 8b 91 08 0a 00 00 48 8b 32 48 8d 7e 01 8b 89 04 0a 00 00 48 39 cf 73 db <48> 89 44 f2 08 48 89 3a c3 0f 1f 80 00 00 00 00 4c 8b 04 24 65 48
RSP: 0018:ffff8881d091fef0 EFLAGS: 00000283 ORIG_RAX: ffffffffffffff13
RAX: ffffffff816eae49 RBX: ffff8881d091ff58 RCX: 0000000000040000
RDX: ffffc90003357000 RSI: 0000000000000003 RDI: 0000000000000004
RBP: dffffc0000000000 R08: ffffffff81006fef R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8881e8ac0fc0 R14: ffff8881d091ff58 R15: 1ffff1103d1581f8
__x64_sys_bpf+0x19/0x80 kernel/bpf/syscall.c:2849
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7ff1f69a5ee9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff1f5d200c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ff1f6adcf80 RCX: 00007ff1f69a5ee9
RDX: 0000000000000080 RSI: 0000000020000040 RDI: 0000000000000005
RBP: 00007ff1f6a036fe R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff1f6adcf80 R15: 00007ffe4e1f7298
Allocated by task 0:
(stack is not available)
Freed by task 0:
(stack is not available)
The buggy address belongs to the object at ffff8881e47eb180
which belongs to the cache sgpool-32 of size 1024
The buggy address is located 72 bytes inside of
1024-byte region [ffff8881e47eb180, ffff8881e47eb580)
The buggy address belongs to the page:
page:ffffea000791fa00 refcount:1 mapcount:0 mapping:ffff8881f50f0280 index:0x0 compound_mapcount: 0
flags: 0x8000000000010200(slab|head)
raw: 8000000000010200 dead000000000100 dead000000000122 ffff8881f50f0280
raw: 0000000000000000 00000000800e000e 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x1d2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL)
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook mm/page_alloc.c:2165 [inline]
prep_new_page+0x18f/0x370 mm/page_alloc.c:2171
get_page_from_freelist+0x2d13/0x2d90 mm/page_alloc.c:3794
__alloc_pages_nodemask+0x393/0x840 mm/page_alloc.c:4893
alloc_slab_page+0x39/0x3c0 mm/slub.c:343
allocate_slab mm/slub.c:1683 [inline]
new_slab+0x97/0x440 mm/slub.c:1749
new_slab_objects mm/slub.c:2505 [inline]
___slab_alloc+0x2fe/0x490 mm/slub.c:2667
__slab_alloc+0x62/0xa0 mm/slub.c:2707
slab_alloc_node mm/slub.c:2792 [inline]
slab_alloc mm/slub.c:2837 [inline]
kmem_cache_alloc+0x109/0x250 mm/slub.c:2842
mempool_alloc+0x11f/0x530 mm/mempool.c:393
__sg_alloc_table+0xc4/0x3b0 lib/scatterlist.c:302
sg_alloc_table_chained+0xe2/0x1b0 lib/sg_pool.c:132
scsi_init_sgtable drivers/scsi/scsi_lib.c:999 [inline]
scsi_init_io+0x102/0x340 drivers/scsi/scsi_lib.c:1034
sd_setup_read_write_cmnd drivers/scsi/sd.c:1176 [inline]
sd_init_command+0x852/0x2000 drivers/scsi/sd.c:1292
scsi_setup_fs_cmnd drivers/scsi/scsi_lib.c:1216 [inline]
scsi_setup_cmnd drivers/scsi/scsi_lib.c:1235 [inline]
scsi_mq_prep_fn drivers/scsi/scsi_lib.c:1618 [inline]
scsi_queue_rq+0x13a8/0x2860 drivers/scsi/scsi_lib.c:1681
blk_mq_dispatch_rq_list+0x8f4/0x16f0 block/blk-mq.c:1320
blk_mq_do_dispatch_sched+0x389/0x480 block/blk-mq-sched.c:132
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1176 [inline]
__free_pages_ok+0x847/0x950 mm/page_alloc.c:1438
free_the_page mm/page_alloc.c:4955 [inline]
__free_pages mm/page_alloc.c:4961 [inline]
free_pages+0xf6/0x1b0 mm/page_alloc.c:4969
stack_depot_save+0x42b/0x480 lib/stackdepot.c:300
save_stack mm/kasan/common.c:72 [inline]
set_track mm/kasan/common.c:78 [inline]
kasan_set_free_info mm/kasan/common.c:345 [inline]
__kasan_slab_free+0x21c/0x270 mm/kasan/common.c:487
slab_free_hook mm/slub.c:1455 [inline]
slab_free_freelist_hook mm/slub.c:1494 [inline]
slab_free mm/slub.c:3080 [inline]
kmem_cache_free+0x10b/0x2c0 mm/slub.c:3096
remove_proc_subtree+0x446/0x460 fs/proc/generic.c:753
snmp6_unregister_dev+0xa4/0xe0 net/ipv6/proc.c:270
addrconf_ifdown+0x20d/0x1a90 net/ipv6/addrconf.c:3790
addrconf_notify+0x375/0xe50 net/ipv6/addrconf.c:3696
notifier_call_chain kernel/notifier.c:98 [inline]
__raw_notifier_call_chain kernel/notifier.c:399 [inline]
raw_notifier_call_chain+0x95/0x110 kernel/notifier.c:406
call_netdevice_notifiers_info net/core/dev.c:1670 [inline]
call_netdevice_notifiers_extack net/core/dev.c:1682 [inline]
call_netdevice_notifiers net/core/dev.c:1696 [inline]
rollback_registered_many+0xce5/0x1330 net/core/dev.c:8631
unregister_netdevice_many+0x46/0x250 net/core/dev.c:9786
vti6_exit_batch_net+0x260/0x2a0 net/ipv6/ip6_vti.c:1176
ops_exit_list net/core/net_namespace.c:184 [inline]
cleanup_net+0x6e2/0xc90 net/core/net_namespace.c:609
process_one_work+0x765/0xd20 kernel/workqueue.c:2290
worker_thread+0xaef/0x1470 kernel/workqueue.c:2436
Memory state around the buggy address:
ffff8881e47eb080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8881e47eb100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881e47eb180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff8881e47eb200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8881e47eb280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 1e2d26067 P4D 1e2d26067 PUD 1e2d20067 PMD 0
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 3234 Comm: syz-executor.4 Tainted: G B 5.4.274-syzkaller-00016-gdd432c37afcd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6e09d18 EFLAGS: 00010206
RAX: ffffffff8154d7aa RBX: 0000000000000100 RCX: ffff8881e8ac0fc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8881e47eb1c0
RBP: ffff8881f6e09ec8 R08: ffffffff8154d3ee R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 00000000ffffd320
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881e47eb1c0
FS: 00007ff1f5d206c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001e0d6b000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
call_timer_fn+0x36/0x390 kernel/time/timer.c:1448
expire_timers kernel/time/timer.c:1493 [inline]
__run_timers+0x879/0xbe0 kernel/time/timer.c:1817
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830
__do_softirq+0x23b/0x6b7 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x195/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:538 [inline]
smp_apic_timer_interrupt+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:__sanitizer_cov_trace_pc+0x40/0x50 kernel/kcov.c:194
Code: 01 1f 00 74 01 c3 8b 91 00 0a 00 00 83 fa 02 75 f4 48 8b 91 08 0a 00 00 48 8b 32 48 8d 7e 01 8b 89 04 0a 00 00 48 39 cf 73 db <48> 89 44 f2 08 48 89 3a c3 0f 1f 80 00 00 00 00 4c 8b 04 24 65 48
RSP: 0018:ffff8881d091fef0 EFLAGS: 00000283 ORIG_RAX: ffffffffffffff13
RAX: ffffffff816eae49 RBX: ffff8881d091ff58 RCX: 0000000000040000
RDX: ffffc90003357000 RSI: 0000000000000003 RDI: 0000000000000004
RBP: dffffc0000000000 R08: ffffffff81006fef R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8881e8ac0fc0 R14: ffff8881d091ff58 R15: 1ffff1103d1581f8
__x64_sys_bpf+0x19/0x80 kernel/bpf/syscall.c:2849
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7ff1f69a5ee9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff1f5d200c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ff1f6adcf80 RCX: 00007ff1f69a5ee9
RDX: 0000000000000080 RSI: 0000000020000040 RDI: 0000000000000005
RBP: 00007ff1f6a036fe R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff1f6adcf80 R15: 00007ffe4e1f7298
Modules linked in:
CR2: 0000000000000000
---[ end trace 084139c7fecd48f1 ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6e09d18 EFLAGS: 00010206
RAX: ffffffff8154d7aa RBX: 0000000000000100 RCX: ffff8881e8ac0fc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8881e47eb1c0
RBP: ffff8881f6e09ec8 R08: ffffffff8154d3ee R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 00000000ffffd320
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881e47eb1c0
FS: 00007ff1f5d206c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001e0d6b000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
0: 01 1f add %ebx,(%rdi)
2: 00 74 01 c3 add %dh,-0x3d(%rcx,%rax,1)
6: 8b 91 00 0a 00 00 mov 0xa00(%rcx),%edx
c: 83 fa 02 cmp $0x2,%edx
f: 75 f4 jne 0x5
11: 48 8b 91 08 0a 00 00 mov 0xa08(%rcx),%rdx
18: 48 8b 32 mov (%rdx),%rsi
1b: 48 8d 7e 01 lea 0x1(%rsi),%rdi
1f: 8b 89 04 0a 00 00 mov 0xa04(%rcx),%ecx
25: 48 39 cf cmp %rcx,%rdi
28: 73 db jae 0x5
* 2a: 48 89 44 f2 08 mov %rax,0x8(%rdx,%rsi,8) <-- trapping instruction
2f: 48 89 3a mov %rdi,(%rdx)
32: c3 ret
33: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
3a: 4c 8b 04 24 mov (%rsp),%r8
3e: 65 gs
3f: 48 rex.W