bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
bond0 (unregistering): Released all slaves
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: null-ptr-deref in atomic_add_negative_release include/linux/atomic/atomic-instrumented.h:1457 [inline]
BUG: KASAN: null-ptr-deref in __rcuref_put include/linux/rcuref.h:87 [inline]
BUG: KASAN: null-ptr-deref in rcuref_put include/linux/rcuref.h:150 [inline]
BUG: KASAN: null-ptr-deref in dst_release+0x38/0x1d4 net/core/dst.c:164
Write of size 4 at addr 0000000000000060 by task kworker/u8:0/14486

CPU: 0 PID: 14486 Comm: kworker/u8:0 Not tainted 6.9.0-rc2-syzkaller-00080-gc85af715cac0 #0
Hardware name: linux,dummy-virt (DT)
Workqueue: netns cleanup_net
Call trace:
 dump_backtrace+0x9c/0x11c arch/arm64/kernel/stacktrace.c:317
 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:324
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xa4/0xf4 lib/dump_stack.c:114
 print_report mm/kasan/report.c:491 [inline]
 print_report+0x364/0x59c mm/kasan/report.c:477
 kasan_report+0xc8/0x108 mm/kasan/report.c:601
 check_region_inline mm/kasan/generic.c:175 [inline]
 kasan_check_range+0xe8/0x190 mm/kasan/generic.c:189
 __kasan_check_write+0x20/0x2c mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_add_negative_release include/linux/atomic/atomic-instrumented.h:1457 [inline]
 __rcuref_put include/linux/rcuref.h:87 [inline]
 rcuref_put include/linux/rcuref.h:150 [inline]
 dst_release+0x38/0x1d4 net/core/dst.c:164
 dst_cache_destroy net/core/dst_cache.c:160 [inline]
 dst_cache_destroy+0xc8/0x1a0 net/core/dst_cache.c:152
 ipip6_dev_free+0x14/0x20 net/ipv6/sit.c:1409
 netdev_run_todo+0x52c/0xcb0 net/core/dev.c:10587
 rtnl_unlock+0x10/0x1c net/core/rtnetlink.c:152
 cleanup_net+0x410/0x8d0 net/core/net_namespace.c:633
 process_one_work+0x78c/0x1898 kernel/workqueue.c:3254
 process_scheduled_works kernel/workqueue.c:3335 [inline]
 worker_thread+0x764/0xc24 kernel/workqueue.c:3416
 kthread+0x27c/0x300 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
==================================================================
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000060
Mem abort info:
  ESR = 0x0000000096000004
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x04: level 0 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
user pgtable: 4k pages, 48-bit VAs, pgdp=000000005567b000
[0000000000000060] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 14486 Comm: kworker/u8:0 Tainted: G    B              6.9.0-rc2-syzkaller-00080-gc85af715cac0 #0
Hardware name: linux,dummy-virt (DT)
Workqueue: netns cleanup_net
pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __ll_sc_atomic_add_return_release arch/arm64/include/asm/atomic_ll_sc.h:95 [inline]
pc : arch_atomic_add_return_release arch/arm64/include/asm/atomic.h:52 [inline]
pc : raw_atomic_add_return_release include/linux/atomic/atomic-arch-fallback.h:618 [inline]
pc : raw_atomic_add_negative_release include/linux/atomic/atomic-arch-fallback.h:2380 [inline]
pc : atomic_add_negative_release include/linux/atomic/atomic-instrumented.h:1458 [inline]
pc : __rcuref_put include/linux/rcuref.h:87 [inline]
pc : rcuref_put include/linux/rcuref.h:150 [inline]
pc : dst_release+0x98/0x1d4 net/core/dst.c:164
lr : instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
lr : atomic_add_negative_release include/linux/atomic/atomic-instrumented.h:1457 [inline]
lr : __rcuref_put include/linux/rcuref.h:87 [inline]
lr : rcuref_put include/linux/rcuref.h:150 [inline]
lr : dst_release+0x38/0x1d4 net/core/dst.c:164
sp : ffff80008e007840
x29: ffff80008e007840 x28: ffff800086359380 x27: ffff800086730708
x26: 0000000000000001 x25: dfff800000000000 x24: ffff700010c6b270
x23: 0000000000000001 x22: 1fffe00003e46d96 x21: ffff00001f236cb0
x20: 0000000000000060 x19: 0000000000000020 x18: ffff000010a82870
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000000 x13: 205d363834343154 x12: ffff700010fe82a5
x11: 1ffff00010fe82a4 x10: ffff700010fe82a4 x9 : dfff800000000000
x8 : 00008fffef017d5c x7 : ffff800087f41527 x6 : 0000000000000001
x5 : ffff800087f41520 x4 : ffff700010fe82a5 x3 : 0000000000000060
x2 : 0000000000000020 x1 : 00000000ffffffff x0 : 0000000000000000
Call trace:
 __ll_sc_atomic_add_return_release arch/arm64/include/asm/atomic_ll_sc.h:95 [inline]
 arch_atomic_add_return_release arch/arm64/include/asm/atomic.h:52 [inline]
 raw_atomic_add_return_release include/linux/atomic/atomic-arch-fallback.h:618 [inline]
 raw_atomic_add_negative_release include/linux/atomic/atomic-arch-fallback.h:2380 [inline]
 atomic_add_negative_release include/linux/atomic/atomic-instrumented.h:1458 [inline]
 __rcuref_put include/linux/rcuref.h:87 [inline]
 rcuref_put include/linux/rcuref.h:150 [inline]
 dst_release+0x98/0x1d4 net/core/dst.c:164
 dst_cache_destroy net/core/dst_cache.c:160 [inline]
 dst_cache_destroy+0xc8/0x1a0 net/core/dst_cache.c:152
 ipip6_dev_free+0x14/0x20 net/ipv6/sit.c:1409
 netdev_run_todo+0x52c/0xcb0 net/core/dev.c:10587
 rtnl_unlock+0x10/0x1c net/core/rtnetlink.c:152
 cleanup_net+0x410/0x8d0 net/core/net_namespace.c:633
 process_one_work+0x78c/0x1898 kernel/workqueue.c:3254
 process_scheduled_works kernel/workqueue.c:3335 [inline]
 worker_thread+0x764/0xc24 kernel/workqueue.c:3416
 kthread+0x27c/0x300 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
Code: d65f03c0 91010263 12800001 f9800071 (885f7c60) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	d65f03c0 	ret
   4:	91010263 	add	x3, x19, #0x40
   8:	12800001 	mov	w1, #0xffffffff            	// #-1
   c:	f9800071 	prfm	pstl1strm, [x3]
* 10:	885f7c60 	ldxr	w0, [x3] <-- trapping instruction