==================================================================
BUG: KASAN: use-after-free in hlist_move_list include/linux/list.h:852 [inline]
BUG: KASAN: use-after-free in __collect_expired_timers kernel/time/timer.c:1484 [inline]
BUG: KASAN: use-after-free in collect_expired_timers kernel/time/timer.c:1719 [inline]
BUG: KASAN: use-after-free in __run_timers+0x4a8/0x6b0 kernel/time/timer.c:1783
Write of size 8 at addr ffff8881dbb771c8 by task swapper/1/0
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.4.210-syzkaller-00019-g035e4939365c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x18e/0x1d5 lib/dump_stack.c:118
print_address_description+0x8c/0x630 mm/kasan/report.c:384
__kasan_report+0xf6/0x130 mm/kasan/report.c:516
kasan_report+0x30/0x60 mm/kasan/common.c:653
hlist_move_list include/linux/list.h:852 [inline]
__collect_expired_timers kernel/time/timer.c:1484 [inline]
collect_expired_timers kernel/time/timer.c:1719 [inline]
__run_timers+0x4a8/0x6b0 kernel/time/timer.c:1783
run_timer_softirq+0x46/0x80 kernel/time/timer.c:1800
__do_softirq+0x23e/0x643 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+0x113/0x440 arch/x86/kernel/apic/apic.c:1150
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:831
RIP: 0010:default_idle+0x1f/0x30 arch/x86/kernel/process.c:573
Code: 90 90 90 90 90 90 90 90 90 90 90 e8 1b 2b fd fd bf 01 00 00 00 89 c6 e8 ef 26 07 fd 0f 1f 44 00 00 0f 00 2d 93 67 65 00 fb f4 fc 2a fd fd bf ff ff ff ff 89 c6 e9 d0 26 07 fd 41 57 41 56 53
RSP: 0018:ffff8881f5df7e88 EFLAGS: 000002d6 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: ffff8881f5dc1f80 RCX: ffff8881f5dc1f80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: dffffc0000000000 R08: ffffffff821d1134 R09: ffffed103ebb83f1
R10: ffffed103ebb83f1 R11: 1ffff1103ebb83f0 R12: 0000000000000000
R13: 1ffff1103ebb83f0 R14: ffffffff86069520 R15: 0000000000000001
default_idle_call kernel/sched/idle.c:94 [inline]
cpuidle_idle_call kernel/sched/idle.c:154 [inline]
do_idle+0x1d2/0x590 kernel/sched/idle.c:264
cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:356
start_secondary+0x312/0x390 arch/x86/kernel/smpboot.c:264
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241
Allocated by task 4890:
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
__kasan_kmalloc+0x131/0x1e0 mm/kasan/common.c:529
slab_post_alloc_hook mm/slab.h:584 [inline]
slab_alloc_node mm/slub.c:2829 [inline]
slab_alloc mm/slub.c:2837 [inline]
kmem_cache_alloc+0xd0/0x210 mm/slub.c:2842
mempool_alloc+0xcb/0x470 mm/mempool.c:393
__sg_alloc_table+0xca/0x3a0 lib/scatterlist.c:302
sg_alloc_table_chained+0xe5/0x1d0 lib/sg_pool.c:132
scsi_init_sgtable drivers/scsi/scsi_lib.c:999 [inline]
scsi_init_io+0xff/0x340 drivers/scsi/scsi_lib.c:1034
sd_setup_read_write_cmnd drivers/scsi/sd.c:1176 [inline]
sd_init_command+0x845/0x1fe0 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:1616 [inline]
scsi_queue_rq+0x166b/0x2410 drivers/scsi/scsi_lib.c:1684
blk_mq_dispatch_rq_list+0x80a/0x1500 block/blk-mq.c:1296
blk_mq_do_dispatch_sched+0x2e5/0x3d0 block/blk-mq-sched.c:124
blk_mq_sched_dispatch_requests+0x46c/0x540 block/blk-mq-sched.c:220
__blk_mq_run_hw_queue+0x140/0x250 block/blk-mq.c:1427
__blk_mq_delay_run_hw_queue+0x256/0x5a0 block/blk-mq.c:1495
blk_mq_run_hw_queue+0x1ce/0x310 block/blk-mq.c:1532
blk_mq_sched_insert_requests+0x226/0x370 block/blk-mq-sched.c:485
blk_mq_flush_plug_list+0x7df/0x9e0 block/blk-mq.c:1800
blk_flush_plug_list+0x47e/0x4b0 block/blk-core.c:1787
blk_mq_make_request+0xcd3/0x1cb0 block/blk-mq.c:2058
generic_make_request+0x3f5/0xd00 block/blk-core.c:1076
submit_bio+0x26e/0x5a0 block/blk-core.c:1203
ext4_io_submit+0x151/0x200 fs/ext4/page-io.c:350
ext4_writepages+0x1d25/0x3590 fs/ext4/inode.c:2963
do_writepages+0xda/0x1f0 mm/page-writeback.c:2344
__filemap_fdatawrite_range mm/filemap.c:421 [inline]
__filemap_fdatawrite mm/filemap.c:429 [inline]
filemap_flush+0x1df/0x240 mm/filemap.c:456
ext4_release_file+0x7e/0x300 fs/ext4/file.c:89
__fput+0x261/0x680 fs/file_table.c:281
task_work_run+0x186/0x1b0 kernel/task_work.c:113
exit_task_work include/linux/task_work.h:22 [inline]
do_exit+0xbe1/0x2b40 kernel/exit.c:812
do_group_exit+0x136/0x300 kernel/exit.c:910
get_signal+0xd99/0x13f0 kernel/signal.c:2735
do_signal+0x41/0x10a0 arch/x86/kernel/signal.c:809
exit_to_usermode_loop+0xdd/0x1d0 arch/x86/entry/common.c:159
prepare_exit_to_usermode+0x17c/0x1d0 arch/x86/entry/common.c:194
swapgs_restore_regs_and_return_to_usermode+0x0/0x39
Freed by task 4890:
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
kasan_set_free_info mm/kasan/common.c:345 [inline]
__kasan_slab_free+0x178/0x240 mm/kasan/common.c:487
slab_free_hook mm/slub.c:1455 [inline]
slab_free_freelist_hook+0x80/0x150 mm/slub.c:1494
slab_free mm/slub.c:3080 [inline]
kmem_cache_free+0xa9/0x1d0 mm/slub.c:3096
__sg_free_table+0x236/0x340 lib/scatterlist.c:225
scsi_free_sgtables drivers/scsi/scsi_lib.c:557 [inline]
scsi_mq_uninit_cmd drivers/scsi/scsi_lib.c:566 [inline]
scsi_end_request+0x1fd/0x8d0 drivers/scsi/scsi_lib.c:614
scsi_io_completion+0x181/0x400 drivers/scsi/scsi_lib.c:969
blk_done_softirq+0x292/0x2f0 block/blk-softirq.c:37
__do_softirq+0x23e/0x643 kernel/softirq.c:292
The buggy address belongs to the object at ffff8881dbb77180
which belongs to the cache sgpool-32 of size 1024
The buggy address is located 72 bytes inside of
1024-byte region [ffff8881dbb77180, ffff8881dbb77580)
The buggy address belongs to the page:
page:ffffea00076edd00 refcount:1 mapcount:0 mapping:ffff8881f0a4e280 index:0x0 compound_mapcount: 0
flags: 0x8000000000010200(slab|head)
raw: 8000000000010200 dead000000000100 dead000000000122 ffff8881f0a4e280
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+0x194/0x380 mm/page_alloc.c:2171
get_page_from_freelist+0x524/0x560 mm/page_alloc.c:3794
__alloc_pages_nodemask+0x2ab/0x6f0 mm/page_alloc.c:4857
alloc_slab_page+0x39/0x3e0 mm/slub.c:343
allocate_slab mm/slub.c:1683 [inline]
new_slab+0x97/0x450 mm/slub.c:1749
new_slab_objects mm/slub.c:2505 [inline]
___slab_alloc+0x320/0x4a0 mm/slub.c:2667
__slab_alloc+0x5a/0x90 mm/slub.c:2707
slab_alloc_node mm/slub.c:2792 [inline]
slab_alloc mm/slub.c:2837 [inline]
kmem_cache_alloc+0x100/0x210 mm/slub.c:2842
mempool_alloc+0xcb/0x470 mm/mempool.c:393
__sg_alloc_table+0xca/0x3a0 lib/scatterlist.c:302
sg_alloc_table_chained+0xe5/0x1d0 lib/sg_pool.c:132
scsi_init_sgtable drivers/scsi/scsi_lib.c:999 [inline]
scsi_init_io+0xff/0x340 drivers/scsi/scsi_lib.c:1034
sd_setup_read_write_cmnd drivers/scsi/sd.c:1176 [inline]
sd_init_command+0x845/0x1fe0 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:1616 [inline]
scsi_queue_rq+0x166b/0x2410 drivers/scsi/scsi_lib.c:1684
blk_mq_dispatch_rq_list+0x80a/0x1500 block/blk-mq.c:1296
blk_mq_do_dispatch_sched+0x2e5/0x3d0 block/blk-mq-sched.c:124
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+0x7ee/0x920 mm/page_alloc.c:1438
free_the_page mm/page_alloc.c:4919 [inline]
__free_pages+0x45/0x1e0 mm/page_alloc.c:4925
kfree+0x1ef/0x260 mm/slub.c:4068
bpf_check+0x4a22/0xb220 kernel/bpf/verifier.c:9704
bpf_prog_load kernel/bpf/syscall.c:1724 [inline]
__do_sys_bpf kernel/bpf/syscall.c:2889 [inline]
__se_sys_bpf+0x7690/0xba40 kernel/bpf/syscall.c:2847
do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Memory state around the buggy address:
ffff8881dbb77080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881dbb77100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881dbb77180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8881dbb77200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881dbb77280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 1de268067 P4D 1de268067 PUD 1de267067 PMD 0
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 0 Comm: swapper/1 Tainted: G B 5.4.210-syzkaller-00019-g035e4939365c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09d30 EFLAGS: 00010002
RAX: ffffffff8151cbb9 RBX: 0000000000000101 RCX: ffff8881f5dc1f80
RDX: 0000000080000101 RSI: 0000000000000000 RDI: ffff8881dbb771c0
RBP: ffff8881dbb771e0 R08: ffffffff8151c992 R09: fffffbfff0d7370d
R10: fffffbfff0d7370d R11: 1ffffffff0d7370c R12: 00000000ffffbf30
R13: 1ffff1103ede92f1 R14: 0000000000000000 R15: ffff8881dbb771c0
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001de265000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
call_timer_fn+0x31/0x350 kernel/time/timer.c:1418
expire_timers+0x253/0x400 kernel/time/timer.c:1458
__run_timers+0x5b0/0x6b0 kernel/time/timer.c:1787
run_timer_softirq+0x46/0x80 kernel/time/timer.c:1800
__do_softirq+0x23e/0x643 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+0x113/0x440 arch/x86/kernel/apic/apic.c:1150
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:831
RIP: 0010:default_idle+0x1f/0x30 arch/x86/kernel/process.c:573
Code: 90 90 90 90 90 90 90 90 90 90 90 e8 1b 2b fd fd bf 01 00 00 00 89 c6 e8 ef 26 07 fd 0f 1f 44 00 00 0f 00 2d 93 67 65 00 fb f4 fc 2a fd fd bf ff ff ff ff 89 c6 e9 d0 26 07 fd 41 57 41 56 53
RSP: 0018:ffff8881f5df7e88 EFLAGS: 000002d6 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: ffff8881f5dc1f80 RCX: ffff8881f5dc1f80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: dffffc0000000000 R08: ffffffff821d1134 R09: ffffed103ebb83f1
R10: ffffed103ebb83f1 R11: 1ffff1103ebb83f0 R12: 0000000000000000
R13: 1ffff1103ebb83f0 R14: ffffffff86069520 R15: 0000000000000001
default_idle_call kernel/sched/idle.c:94 [inline]
cpuidle_idle_call kernel/sched/idle.c:154 [inline]
do_idle+0x1d2/0x590 kernel/sched/idle.c:264
cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:356
start_secondary+0x312/0x390 arch/x86/kernel/smpboot.c:264
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241
Modules linked in:
CR2: 0000000000000000
---[ end trace 2ecd7a5335c9933a ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09d30 EFLAGS: 00010002
RAX: ffffffff8151cbb9 RBX: 0000000000000101 RCX: ffff8881f5dc1f80
RDX: 0000000080000101 RSI: 0000000000000000 RDI: ffff8881dbb771c0
RBP: ffff8881dbb771e0 R08: ffffffff8151c992 R09: fffffbfff0d7370d
R10: fffffbfff0d7370d R11: 1ffffffff0d7370c R12: 00000000ffffbf30
R13: 1ffff1103ede92f1 R14: 0000000000000000 R15: ffff8881dbb771c0
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001de265000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 90 nop
1: 90 nop
2: 90 nop
3: 90 nop
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 90 nop
9: 90 nop
a: 90 nop
b: e8 1b 2b fd fd callq 0xfdfd2b2b
10: bf 01 00 00 00 mov $0x1,%edi
15: 89 c6 mov %eax,%esi
17: e8 ef 26 07 fd callq 0xfd07270b
1c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
21: 0f 00 2d 93 67 65 00 verw 0x656793(%rip) # 0x6567bb
28: fb sti
29: f4 hlt
* 2a: e8 fc 2a fd fd callq 0xfdfd2b2b <-- trapping instruction
2f: bf ff ff ff ff mov $0xffffffff,%edi
34: 89 c6 mov %eax,%esi
36: e9 d0 26 07 fd jmpq 0xfd07270b
3b: 41 57 push %r15
3d: 41 56 push %r14
3f: 53 push %rbx