BUG: sleeping function called from invalid context at arch/x86/mm/fault.c:1372
in_atomic(): 0, irqs_disabled(): 1, pid: 13211, name: syz-executor6
2 locks held by syz-executor6/13211:
#0: (sk_lock-AF_ALG){+.+.}, at: [<0000000011b7eee5>] lock_sock include/net/sock.h:1461 [inline]
#0: (sk_lock-AF_ALG){+.+.}, at: [<0000000011b7eee5>] skcipher_recvmsg+0xb3/0xf20 crypto/algif_skcipher.c:163
#1: (&mm->mmap_sem){++++}, at: [<000000002de9135e>] __do_page_fault+0x32d/0xc90 arch/x86/mm/fault.c:1358
irq event stamp: 1668
hardirqs last enabled at (1667): [<00000000c85f213a>] slab_alloc mm/slab.c:3378 [inline]
hardirqs last enabled at (1667): [<00000000c85f213a>] __do_kmalloc mm/slab.c:3709 [inline]
hardirqs last enabled at (1667): [<00000000c85f213a>] __kmalloc+0x23a/0x760 mm/slab.c:3720
hardirqs last disabled at (1668): [<00000000d5cf0afc>] kfree+0x6a/0x250 mm/slab.c:3800
softirqs last enabled at (1662): [<00000000f0b68bb9>] lock_sock_nested+0x91/0x110 net/core/sock.c:2765
softirqs last disabled at (1660): [<0000000004034dca>] spin_lock_bh include/linux/spinlock.h:320 [inline]
softirqs last disabled at (1660): [<0000000004034dca>] lock_sock_nested+0x44/0x110 net/core/sock.c:2762
CPU: 0 PID: 13211 Comm: syz-executor6 Not tainted 4.15.0-rc2+ #149
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x194/0x257 lib/dump_stack.c:53
___might_sleep+0x2b2/0x470 kernel/sched/core.c:6060
__might_sleep+0x95/0x190 kernel/sched/core.c:6013
__do_page_fault+0x350/0xc90 arch/x86/mm/fault.c:1372
do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1504
page_fault+0x22/0x30 arch/x86/entry/entry_64.S:1094
RIP: 0010:virt_to_cache mm/slab.c:400 [inline]
RIP: 0010:kfree+0xb2/0x250 mm/slab.c:3802
RSP: 0018:ffff8801d0177780 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8801d0177948 RCX: ffffffffffffffff
RDX: ffffea0007405dc0 RSI: 0000000000000000 RDI: ffff8801d0177948
RBP: ffff8801d01777a0 R08: ffffed003a936cdc R09: 0000000000000000
R10: 0000000000000001 R11: ffffed003a936cdb R12: 0000000000000282
R13: 0000000000000000 R14: ffff8801d0177948 R15: ffff8801d01778b0
blkcipher_walk_done+0x72b/0xde0 crypto/blkcipher.c:139
encrypt+0x50a/0xaf0 crypto/salsa20_generic.c:208
skcipher_crypt_blkcipher crypto/skcipher.c:622 [inline]
skcipher_encrypt_blkcipher+0x213/0x310 crypto/skcipher.c:631
crypto_skcipher_encrypt include/crypto/skcipher.h:445 [inline]
_skcipher_recvmsg crypto/algif_skcipher.c:144 [inline]
skcipher_recvmsg+0x9e8/0xf20 crypto/algif_skcipher.c:165
sock_recvmsg_nosec net/socket.c:809 [inline]
sock_recvmsg+0xc9/0x110 net/socket.c:816
___sys_recvmsg+0x29b/0x630 net/socket.c:2185
__sys_recvmsg+0xe2/0x210 net/socket.c:2230
SYSC_recvmsg net/socket.c:2242 [inline]
SyS_recvmsg+0x2d/0x50 net/socket.c:2237
entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a39
RSP: 002b:00007fe2d4137c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 0000000000002021 RSI: 0000000020b2dfc8 RDI: 0000000000000014
RBP: 000000000000039b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f3728
R13: 00000000ffffffff R14: 00007fe2d41386d4 R15: 0000000000000000
BUG: unable to handle kernel NULL pointer dereference at 0000000000000074
IP: virt_to_cache mm/slab.c:400 [inline]
IP: kfree+0xb2/0x250 mm/slab.c:3802
PGD 1bfe49067 P4D 1bfe49067 PUD 1c25f9067 PMD 0
Oops: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
(ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 13211 Comm: syz-executor6 Tainted: G W 4.15.0-rc2+ #149
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:virt_to_cache mm/slab.c:400 [inline]
RIP: 0010:kfree+0xb2/0x250 mm/slab.c:3802
RSP: 0018:ffff8801d0177780 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8801d0177948 RCX: ffffffffffffffff
RDX: ffffea0007405dc0 RSI: 0000000000000000 RDI: ffff8801d0177948
RBP: ffff8801d01777a0 R08: ffffed003a936cdc R09: 0000000000000000
R10: 0000000000000001 R11: ffffed003a936cdb R12: 0000000000000282
R13: 0000000000000000 R14: ffff8801d0177948 R15: ffff8801d01778b0
FS: 00007fe2d4138700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000074 CR3: 00000001cff49000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
blkcipher_walk_done+0x72b/0xde0 crypto/blkcipher.c:139
encrypt+0x50a/0xaf0 crypto/salsa20_generic.c:208
skcipher_crypt_blkcipher crypto/skcipher.c:622 [inline]
skcipher_encrypt_blkcipher+0x213/0x310 crypto/skcipher.c:631
crypto_skcipher_encrypt include/crypto/skcipher.h:445 [inline]
_skcipher_recvmsg crypto/algif_skcipher.c:144 [inline]
skcipher_recvmsg+0x9e8/0xf20 crypto/algif_skcipher.c:165
sock_recvmsg_nosec net/socket.c:809 [inline]
sock_recvmsg+0xc9/0x110 net/socket.c:816
___sys_recvmsg+0x29b/0x630 net/socket.c:2185
__sys_recvmsg+0xe2/0x210 net/socket.c:2230
SYSC_recvmsg net/socket.c:2242 [inline]
SyS_recvmsg+0x2d/0x50 net/socket.c:2237
entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a39
RSP: 002b:00007fe2d4137c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 0000000000002021 RSI: 0000000020b2dfc8 RDI: 0000000000000014
RBP: 000000000000039b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f3728
R13: 00000000ffffffff R14: 00007fe2d41386d4 R15: 0000000000000000
Code: c2 48 b8 00 00 00 00 00 ea ff ff 48 89 df 48 c1 ea 0c 48 c1 e2 06 48 01 c2 48 8b 42 20 48 8d 48 ff a8 01 48 0f 45 d1 4c 8b 6a 30 <49> 63 75 74 e8 05 74 af ff 48 89 de 4c 89 ef 4c 8b 75 08 e8 06
RIP: virt_to_cache mm/slab.c:400 [inline] RSP: ffff8801d0177780
RIP: kfree+0xb2/0x250 mm/slab.c:3802 RSP: ffff8801d0177780
CR2: 0000000000000074
---[ end trace 8c4ccc674b3d2a53 ]---