FYI, we noticed the below changes on
https://github.com/0day-ci/linux Geliang-Tang/Bluetooth-use-list_for_each_entry/20151218-234306
commit c5e8d791cacac62eeec48e00a1a14a6a350670f4 ("ipv4, ipv6: use list_for_each_entry*")
[ 6.848404] IPv6: Attempt to override permanent protocol 33
[ 6.850925] kworker/u2:1 (109) used greatest stack depth: 7240 bytes left
[ 6.850925] kworker/u2:1 (109) used greatest stack depth: 7240 bytes left
[ 6.880428] BUG: unable to handle kernel
[ 6.880428] BUG: unable to handle kernel NULL pointer dereferenceNULL pointer dereference at (null)
at (null)
[ 6.882213] IP:
[ 6.882213] IP: [<ca1779b8>] __list_del_entry+0x88/0x230
[<ca1779b8>] __list_del_entry+0x88/0x230
[ 6.883565] *pdpt = 0000000000000000
[ 6.883565] *pdpt = 0000000000000000 *pde = f000ff53f000ff53 *pde = f000ff53f000ff53
[ 6.885082] Oops: 0000 [#1]
[ 6.885082] Oops: 0000 [#1] SMP SMP
[ 6.885926] Modules linked in:
[ 6.885926] Modules linked in:
[ 6.886781] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.0-rc3-00302-gc5e8d79 #1
[ 6.886781] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.0-rc3-00302-gc5e8d79 #1
[ 6.888380] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 6.888380] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 6.890387] task: c005a000 ti: c005c000 task.ti: c005c000
[ 6.890387] task: c005a000 ti: c005c000 task.ti: c005c000
[ 6.891774] EIP: 0060:[<ca1779b8>] EFLAGS: 00010246 CPU: 0
[ 6.891774] EIP: 0060:[<ca1779b8>] EFLAGS: 00010246 CPU: 0
[ 6.895311] EIP is at __list_del_entry+0x88/0x230
[ 6.895311] EIP is at __list_del_entry+0x88/0x230
[ 6.896639] EAX: 00000000 EBX: cab7cd7c ECX: 00000000 EDX: 00000000
[ 6.896639] EAX: 00000000 EBX: cab7cd7c ECX: 00000000 EDX: 00000000
[ 6.899728] ESI: 00000000 EDI: 00000000 EBP: c005deec ESP: c005dec4
[ 6.899728] ESI: 00000000 EDI: 00000000 EBP: c005deec ESP: c005dec4
[ 6.903932] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 6.903932] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 6.905123] CR0: 80050033 CR2: 00000000 CR3: 0ade1000 CR4: 000406b0
[ 6.905123] CR0: 80050033 CR2: 00000000 CR3: 0ade1000 CR4: 000406b0
[ 6.909725] Stack:
[ 6.909725] Stack:
[ 6.910254] cab7a080
[ 6.910254] cab7a080 d5a87f88 d5a87f88 c005deec c005deec ca6cd52b ca6cd52b 00000000 00000000 00000001 00000001 00000000 00000000 cab7cd7c cab7cd7c
[ 6.913171] cac4493e
[ 6.913171] cac4493e d5a87f88 d5a87f88 c005df00 c005df00 ca590d75 ca590d75 ca5d25fd ca5d25fd ffffff9f ffffff9f ffffff9f ffffff9f c005df0c c005df0c
[ 6.918206] cac4499f
[ 6.918206] cac4499f caad4600 caad4600 c005df84 c005df84 c9c00442 c9c00442 024000c0 024000c0 ca9b99ac ca9b99ac cac4493e cac4493e 00000068 00000068
[ 6.921476] Call Trace:
[ 6.921476] Call Trace:
[ 6.922000] [<ca6cd52b>] ? _raw_spin_lock_bh+0x6b/0x80
[ 6.922000] [<ca6cd52b>] ? _raw_spin_lock_bh+0x6b/0x80
[ 6.924344] [<cac4493e>] ? dccp_v6_init_net+0x30/0x30
[ 6.924344] [<cac4493e>] ? dccp_v6_init_net+0x30/0x30
[ 6.925606] [<ca590d75>] inet6_unregister_protosw+0x25/0x60
[ 6.925606] [<ca590d75>] inet6_unregister_protosw+0x25/0x60
[ 6.930274] [<ca5d25fd>] ? inet6_del_protocol+0x2d/0x40
[ 6.930274] [<ca5d25fd>] ? inet6_del_protocol+0x2d/0x40
[ 6.931517] [<cac4499f>] dccp_v6_init+0x61/0x70
[ 6.931517] [<cac4499f>] dccp_v6_init+0x61/0x70
[ 6.932670] [<c9c00442>] do_one_initcall+0x82/0x1e0
[ 6.932670] [<c9c00442>] do_one_initcall+0x82/0x1e0
[ 6.937242] [<cac4493e>] ? dccp_v6_init_net+0x30/0x30
[ 6.937242] [<cac4493e>] ? dccp_v6_init_net+0x30/0x30
[ 6.939877] [<c9c77546>] ? parse_args+0x176/0x440
[ 6.939877] [<c9c77546>] ? parse_args+0x176/0x440
[ 6.940919] [<cabf3c59>] ? kernel_init_freeable+0xcd/0x16a
[ 6.940919] [<cabf3c59>] ? kernel_init_freeable+0xcd/0x16a
[ 6.942284] [<cabf3c79>] kernel_init_freeable+0xed/0x16a
[ 6.942284] [<cabf3c79>] kernel_init_freeable+0xed/0x16a
[ 6.946965] [<ca6c42b0>] kernel_init+0x10/0xe0
[ 6.946965] [<ca6c42b0>] kernel_init+0x10/0xe0
[ 6.948084] [<ca6ce169>] ret_from_kernel_thread+0x21/0x38
[ 6.948084] [<ca6ce169>] ret_from_kernel_thread+0x21/0x38
[ 6.952443] [<ca6c42a0>] ? rest_init+0xc0/0xc0
[ 6.952443] [<ca6c42a0>] ? rest_init+0xc0/0xc0
[ 6.953426] Code:
[ 6.953426] Code: 78 78 69 69 bc bc ca ca 89 89 f2 f2 e8 e8 c8 c8 11 11 bb bb ff ff 81 81 7d 7d f0 f0 00 00 02 02 00 00 00 00 0f 0f 84 84 6b 6b 01 01 00 00 00 00 31 31 c9 c9 89 89 f2 f2 b8 b8 64 64 69 69 bc bc ca ca e8 e8 ad ad 11 11 bb bb ff ff 8b 8b 45 45 f0 f0 31 31 d2 d2 <8b> <8b> 30 30 b8 b8 50 50 69 69 bc bc ca ca 39 39 f3 f3 0f 0f 95 95 c2 c2 31 31 c9 c9 89 89 55 55 ec ec e8 e8 92 92 11 11 bb bb
[ 6.965056] EIP: [<ca1779b8>]
[ 6.965056] EIP: [<ca1779b8>] __list_del_entry+0x88/0x230__list_del_entry+0x88/0x230 SS:ESP 0068:c005dec4
SS:ESP 0068:c005dec4
[ 6.970187] CR2: 0000000000000000
[ 6.970187] CR2: 0000000000000000
[ 6.970894] ---[ end trace 2c9f823fcf08155b ]---
[ 6.970894] ---[ end trace 2c9f823fcf08155b ]---
Thanks,
Kernel Test Robot