=============================
[ BUG: Invalid wait context ]
6.13.0-rc7-syzkaller-00191-gfda5e3f28400 #0 Not tainted
-----------------------------
syz.0.0/5322 is trying to lock:
ffff88805ffd7298 (&zone->lock){..-.}-{3:3}, at: rmqueue_buddy mm/page_alloc.c:2909 [inline]
ffff88805ffd7298 (&zone->lock){..-.}-{3:3}, at: rmqueue mm/page_alloc.c:3082 [inline]
ffff88805ffd7298 (&zone->lock){..-.}-{3:3}, at: get_page_from_freelist+0xb3d/0x37a0 mm/page_alloc.c:3473
other info that might help us debug this:
context-{2:2}
5 locks held by syz.0.0/5322:
#0: ffffffff8fc9af08 (br_ioctl_mutex){+.+.}-{4:4}, at: br_ioctl_call+0x57/0xb0 net/socket.c:1180
#1: ffffffff8fcb5908 (rtnl_mutex){+.+.}-{4:4}, at: br_ioctl_stub+0xa4/0xb00 net/bridge/br_ioctl.c:402
#2: ffff8880003fcd98 (&br->lock){+...}-{3:3}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]
#2: ffff8880003fcd98 (&br->lock){+...}-{3:3}, at: del_nbp+0x177/0xb40 net/bridge/br_if.c:342
#3: ffff8880003fcdd8 (&br->hash_lock){+.-.}-{3:3}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]
#3: ffff8880003fcdd8 (&br->hash_lock){+.-.}-{3:3}, at: br_fdb_delete_by_port+0x3c/0x310 net/bridge/br_fdb.c:767
#4: ffff88801fc44ad8 (&pcp->lock){+.+.}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline]
#4: ffff88801fc44ad8 (&pcp->lock){+.+.}-{3:3}, at: rmqueue_pcplist mm/page_alloc.c:3032 [inline]
#4: ffff88801fc44ad8 (&pcp->lock){+.+.}-{3:3}, at: rmqueue mm/page_alloc.c:3076 [inline]
#4: ffff88801fc44ad8 (&pcp->lock){+.+.}-{3:3}, at: get_page_from_freelist+0x7d3/0x37a0 mm/page_alloc.c:3473
stack backtrace:
CPU: 0 UID: 0 PID: 5322 Comm: syz.0.0 Not tainted 6.13.0-rc7-syzkaller-00191-gfda5e3f28400 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline]
check_wait_context kernel/locking/lockdep.c:4898 [inline]
__lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5176
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
rmqueue_buddy mm/page_alloc.c:2909 [inline]
rmqueue mm/page_alloc.c:3082 [inline]
get_page_from_freelist+0xb3d/0x37a0 mm/page_alloc.c:3473
__alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0x3e1/0x780 mm/mempolicy.c:2269
stack_depot_save_flags+0x72d/0x940 lib/stackdepot.c:627
kasan_save_stack+0x4f/0x60 mm/kasan/common.c:48
__kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:544
task_work_add+0xd9/0x490 kernel/task_work.c:77
__run_posix_cpu_timers kernel/time/posix-cpu-timers.c:1223 [inline]
run_posix_cpu_timers+0x6ac/0x810 kernel/time/posix-cpu-timers.c:1422
tick_sched_handle kernel/time/tick-sched.c:276 [inline]
tick_nohz_handler+0x37c/0x500 kernel/time/tick-sched.c:297
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x551/0xd30 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 fe 0f 3a f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 43 b6 a1 f5 65 8b 05 b4 f8 37 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9000d3066a0 EFLAGS: 00000206
RAX: 82eb1e80a256ef00 RBX: 1ffff92001a60cd8 RCX: ffffffff817b387a
RDX: dffffc0000000000 RSI: ffffffff8c0a98e0 RDI: 0000000000000001
RBP: ffffc9000d306738 R08: ffffffff942ab887 R09: 1ffffffff2855710
R10: dffffc0000000000 R11: fffffbfff2855711 R12: dffffc0000000000
R13: 1ffff92001a60cd4 R14: ffffc9000d3066c0 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
rmqueue_bulk mm/page_alloc.c:2328 [inline]
__rmqueue_pcplist+0x21fd/0x2a90 mm/page_alloc.c:3003
rmqueue_pcplist mm/page_alloc.c:3045 [inline]
rmqueue mm/page_alloc.c:3076 [inline]
get_page_from_freelist+0x886/0x37a0 mm/page_alloc.c:3473
__alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0x3e1/0x780 mm/mempolicy.c:2269
stack_depot_save_flags+0x72d/0x940 lib/stackdepot.c:627
save_stack+0x109/0x1f0 mm/page_owner.c:157
__set_page_owner+0x92/0x800 mm/page_owner.c:320
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1558
prep_new_page mm/page_alloc.c:1566 [inline]
get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3476
__alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0x3e1/0x780 mm/mempolicy.c:2269
alloc_slab_page+0x6a/0x110 mm/slub.c:2423
allocate_slab+0x5a/0x2b0 mm/slub.c:2589
new_slab mm/slub.c:2642 [inline]
___slab_alloc+0xc27/0x14a0 mm/slub.c:3830
__slab_alloc+0x58/0xa0 mm/slub.c:3920
__slab_alloc_node mm/slub.c:3995 [inline]
slab_alloc_node mm/slub.c:4156 [inline]
kmem_cache_alloc_node_noprof+0x269/0x380 mm/slub.c:4220
kmalloc_reserve+0xa8/0x2a0 net/core/skbuff.c:587
__alloc_skb+0x1f3/0x440 net/core/skbuff.c:678
alloc_skb include/linux/skbuff.h:1323 [inline]
nlmsg_new include/net/netlink.h:1018 [inline]
fdb_notify+0xa8/0x170 net/bridge/br_fdb.c:188
fdb_delete+0xf49/0x1210 net/bridge/br_fdb.c:324
br_fdb_delete_by_port+0x150/0x310 net/bridge/br_fdb.c:782
br_stp_disable_port+0x11b/0x1c0 net/bridge/br_stp_if.c:117
del_nbp+0x17f/0xb40 net/bridge/br_if.c:343
br_del_if+0x145/0x320 net/bridge/br_if.c:739
add_del_if net/bridge/br_ioctl.c:101 [inline]
br_ioctl_stub+0x47b/0xb00 net/bridge/br_ioctl.c:433
br_ioctl_call+0x7d/0xb0 net/socket.c:1182
dev_ifsioc+0xc20/0xe70 net/core/dev_ioctl.c:588
dev_ioctl+0x719/0x1340 net/core/dev_ioctl.c:783
sock_do_ioctl+0x240/0x460 net/socket.c:1223
sock_ioctl+0x626/0x8e0 net/socket.c:1328
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:906 [inline]
__se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc9da985d29
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc9db79c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc9dab75fa0 RCX: 00007fc9da985d29
RDX: 0000000020000000 RSI: 00000000000089a3 RDI: 0000000000000003
RBP: 00007fc9daa01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc9dab75fa0 R15: 00007ffdd2ce3948
----------------
Code disassembly (best guess):
0: 9c pushf
1: 8f 44 24 20 pop 0x20(%rsp)
5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1)
a: 74 08 je 0x14
c: 4c 89 f7 mov %r14,%rdi
f: e8 fe 0f 3a f6 call 0xf63a1012
14: f6 44 24 21 02 testb $0x2,0x21(%rsp)
19: 75 52 jne 0x6d
1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 43 b6 a1 f5 call 0xf5a1b672 <-- trapping instruction
2f: 65 8b 05 b4 f8 37 74 mov %gs:0x7437f8b4(%rip),%eax # 0x7437f8ea
36: 85 c0 test %eax,%eax
38: 74 43 je 0x7d
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 04 24 add $0x24,%al
3e: 0e (bad)
3f: 36 ss