bisecting fixing commit since 555161ee1b7a74e77ca70fd14ed8a5137c8108ac building syzkaller on 2e29b534005e52c57d726201644ea28ba33a9a3d testing commit 555161ee1b7a74e77ca70fd14ed8a5137c8108ac with gcc (GCC) 8.4.1 20210217 kernel signature: 6d16430c87f4329cfdd9af743a19d89cdb1fac7ebf6f705be4265ba270b27c59 run #0: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks run #1: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks run #2: crashed: general protection fault in scatterwalk_copychunks run #3: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks run #4: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks run #5: crashed: general protection fault in scatterwalk_copychunks run #6: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks run #7: crashed: general protection fault in scatterwalk_copychunks run #8: crashed: general protection fault in scatterwalk_copychunks run #9: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks run #10: crashed: general protection fault in scatterwalk_copychunks run #11: crashed: general protection fault in scatterwalk_copychunks run #12: crashed: general protection fault in scatterwalk_copychunks run #13: crashed: general protection fault in scatterwalk_copychunks run #14: crashed: general protection fault in scatterwalk_copychunks run #15: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks run #16: crashed: general protection fault in scatterwalk_copychunks run #17: crashed: general protection fault in scatterwalk_copychunks run #18: crashed: general protection fault in scatterwalk_copychunks run #19: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks testing current HEAD 3c8c23092588a23bf1856a64f58c37f477a413be testing commit 3c8c23092588a23bf1856a64f58c37f477a413be with gcc (GCC) 8.4.1 20210217 kernel signature: 70e68d3198d99509a6574517968307a58d19d9eb4dca07136a0bb9e764fef9dd run #0: crashed: general protection fault in scatterwalk_copychunks run #1: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks run #2: crashed: general protection fault in scatterwalk_copychunks run #3: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks run #4: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks run #5: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks run #6: crashed: general protection fault in scatterwalk_copychunks run #7: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks run #8: crashed: KASAN: slab-out-of-bounds Read in scatterwalk_copychunks run #9: crashed: KASAN: use-after-free Read in scatterwalk_copychunks revisions tested: 2, total time: 29m11.99848579s (build: 21m33.243528956s, test: 6m48.026405697s) the crash still happens on HEAD commit msg: Linux 4.19.190 crash: KASAN: use-after-free Read in scatterwalk_copychunks RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 000000011d100000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00000000004f8ff8 R14: 00000000004b500d R15: 00007fce360ad6bc ================================================================== BUG: KASAN: use-after-free in memcpy include/linux/string.h:377 [inline] BUG: KASAN: use-after-free in memcpy_dir crypto/scatterwalk.c:28 [inline] BUG: KASAN: use-after-free in scatterwalk_copychunks+0x1e1/0x610 crypto/scatterwalk.c:43 Read of size 4096 at addr ffff8881e399b000 by task syz-executor.1/6698 CPU: 0 PID: 6698 Comm: syz-executor.1 Not tainted 4.19.190-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x123/0x171 lib/dump_stack.c:118 print_address_description.cold.8+0x9/0x1ff mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report mm/kasan/report.c:412 [inline] kasan_report.cold.9+0x242/0x2fe mm/kasan/report.c:396 check_memory_region_inline mm/kasan/kasan.c:260 [inline] check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267 memcpy+0x23/0x50 mm/kasan/kasan.c:302 memcpy include/linux/string.h:377 [inline] memcpy_dir crypto/scatterwalk.c:28 [inline] scatterwalk_copychunks+0x1e1/0x610 crypto/scatterwalk.c:43 scatterwalk_map_and_copy crypto/scatterwalk.c:72 [inline] scatterwalk_map_and_copy+0x128/0x190 crypto/scatterwalk.c:60 gcmaes_encrypt.constprop.15+0x6d6/0xda0 arch/x86/crypto/aesni-intel_glue.c:956 generic_gcmaes_encrypt+0xfd/0x150 arch/x86/crypto/aesni-intel_glue.c:1297 crypto_aead_encrypt include/crypto/aead.h:335 [inline] gcmaes_wrapper_encrypt+0x109/0x180 arch/x86/crypto/aesni-intel_glue.c:1130 crypto_aead_encrypt include/crypto/aead.h:335 [inline] tls_do_encryption net/tls/tls_sw.c:193 [inline] tls_push_record+0x9ae/0x1600 net/tls/tls_sw.c:228 tls_sw_sendpage+0x462/0xc00 net/tls/tls_sw.c:585 inet_sendpage+0x122/0x600 net/ipv4/af_inet.c:815 kernel_sendpage+0x60/0xd0 net/socket.c:3378 sock_sendpage+0x6d/0xd0 net/socket.c:847 pipe_to_sendpage+0x212/0x430 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x2cb/0x720 fs/splice.c:627 splice_from_pipe+0xbb/0x120 fs/splice.c:662 generic_splice_sendpage+0x10/0x20 fs/splice.c:833 do_splice_from fs/splice.c:852 [inline] do_splice+0xa25/0x12b0 fs/splice.c:1154 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x248/0x300 fs/splice.c:1408 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x461229 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f55d96101a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 000000000052bf00 RCX: 0000000000461229 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 000000011d100000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00000000004f8ff8 R14: 00000000004b500d R15: 00007f55d96106bc Allocated by task 3306: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc mm/kasan/kasan.c:553 [inline] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:531 kmem_cache_alloc_trace+0x152/0x740 mm/slab.c:3625 kmalloc include/linux/slab.h:515 [inline] kzalloc include/linux/slab.h:709 [inline] aa_alloc_file_ctx security/apparmor/include/file.h:60 [inline] apparmor_file_alloc_security+0xf7/0x760 security/apparmor/lsm.c:438 security_file_alloc+0x3a/0x70 security/security.c:880 __alloc_file+0xbf/0x2f0 fs/file_table.c:105 alloc_empty_file+0x45/0x110 fs/file_table.c:150 path_openat+0x106/0x2c20 fs/namei.c:3526 do_filp_open+0x177/0x250 fs/namei.c:3567 do_sys_open+0x1dc/0x350 fs/open.c:1085 __do_sys_open fs/open.c:1103 [inline] __se_sys_open fs/open.c:1098 [inline] __x64_sys_open+0x79/0xb0 fs/open.c:1098 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 3306: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x102/0x150 mm/kasan/kasan.c:521 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528 __cache_free mm/slab.c:3503 [inline] kfree+0xcf/0x220 mm/slab.c:3822 kzfree+0x26/0x30 mm/slab_common.c:1574 aa_free_file_ctx security/apparmor/include/file.h:76 [inline] apparmor_file_free_security+0x6c/0x90 security/apparmor/lsm.c:448 security_file_free+0x3a/0x70 security/security.c:885 file_free fs/file_table.c:54 [inline] __fput+0x355/0x7f0 fs/file_table.c:294 ____fput+0x9/0x10 fs/file_table.c:309 task_work_run+0x108/0x180 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x1a9/0x200 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x413/0x4e0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8881e399b000 which belongs to the cache kmalloc-96 of size 96 The buggy address is located 0 bytes inside of 96-byte region [ffff8881e399b000, ffff8881e399b060) The buggy address belongs to the page: page:ffffea00078e66c0 count:1 mapcount:0 mapping:ffff8881f64004c0 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea00078e6508 ffffea00078e6888 ffff8881f64004c0 raw: 0000000000000000 ffff8881e399b000 0000000100000020 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881e399af00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8881e399af80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8881e399b000: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ^ ffff8881e399b080: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff8881e399b100: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ================================================================== kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 6698 Comm: syz-executor.1 Tainted: G B 4.19.190-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:73 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:98 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:82 [inline] RIP: 0010:scatterwalk_copychunks+0x379/0x610 crypto/scatterwalk.c:55 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Code: ff ff 48 89 c7 e8 07 34 2a 00 4c 89 f2 48 c1 ea 03 42 80 3c 3a 00 0f 85 a8 01 00 00 48 8d 70 08 49 89 06 48 89 f2 48 c1 ea 03 <42> 0f b6 14 3a 84 d2 74 09 80 fa 03 0f 8e 6b 01 00 00 48 8b 5d d0 CPU: 1 PID: 6710 Comm: syz-executor.3 Tainted: G B 4.19.190-syzkaller #0 RSP: 0018:ffff8881de197498 EFLAGS: 00010202 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RAX: 0000000000000000 RBX: ffff8881db4c83ac RCX: 000000000000401d Call Trace: RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff8881db4c83a0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x123/0x171 lib/dump_stack.c:118 RBP: ffff8881de1974f8 R08: ffffed103b760804 R09: ffffed103b760800 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0xa lib/fault-inject.c:149 R10: 0000000000000000 R11: ffff8881dbb0401c R12: 0000000000001000 R13: 000000000000001d R14: ffff8881de197538 R15: dffffc0000000000 FS: 00007f55d9610700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 should_fail_alloc_page mm/page_alloc.c:3088 [inline] prepare_alloc_pages mm/page_alloc.c:4346 [inline] __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200000c0 CR3: 00000001e9ab1002 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: scatterwalk_map_and_copy crypto/scatterwalk.c:72 [inline] scatterwalk_map_and_copy+0x128/0x190 crypto/scatterwalk.c:60 gcmaes_encrypt.constprop.15+0x81b/0xda0 arch/x86/crypto/aesni-intel_glue.c:980 __alloc_pages include/linux/gfp.h:496 [inline] __alloc_pages_node include/linux/gfp.h:509 [inline] kmem_getpages mm/slab.c:1412 [inline] cache_grow_begin+0x91/0x8d0 mm/slab.c:2682 generic_gcmaes_encrypt+0xfd/0x150 arch/x86/crypto/aesni-intel_glue.c:1297 cache_alloc_refill mm/slab.c:3049 [inline] ____cache_alloc mm/slab.c:3132 [inline] ____cache_alloc mm/slab.c:3115 [inline] slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0x65b/0x720 mm/slab.c:3647 __alloc_skb+0xa7/0x580 net/core/skbuff.c:193 crypto_aead_encrypt include/crypto/aead.h:335 [inline] gcmaes_wrapper_encrypt+0x109/0x180 arch/x86/crypto/aesni-intel_glue.c:1130 crypto_aead_encrypt include/crypto/aead.h:335 [inline] tls_do_encryption net/tls/tls_sw.c:193 [inline] tls_push_record+0x9ae/0x1600 net/tls/tls_sw.c:228 tls_sw_sendpage+0x462/0xc00 net/tls/tls_sw.c:585 alloc_skb_fclone include/linux/skbuff.h:1037 [inline] sk_stream_alloc_skb+0x9e/0x810 net/ipv4/tcp.c:884 do_tcp_sendpages+0x774/0x1d30 net/ipv4/tcp.c:1003 inet_sendpage+0x122/0x600 net/ipv4/af_inet.c:815 kernel_sendpage+0x60/0xd0 net/socket.c:3378 sock_sendpage+0x6d/0xd0 net/socket.c:847 pipe_to_sendpage+0x212/0x430 fs/splice.c:452 tcp_sendpage_locked net/ipv4/tcp.c:1106 [inline] tcp_sendpage_locked+0x63/0xa0 net/ipv4/tcp.c:1098 tcp_sendpage+0x37/0x50 net/ipv4/tcp.c:1116 inet_sendpage+0x122/0x600 net/ipv4/af_inet.c:815 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x2cb/0x720 fs/splice.c:627 kernel_sendpage+0x60/0xd0 net/socket.c:3378 sock_sendpage+0x6d/0xd0 net/socket.c:847 splice_from_pipe+0xbb/0x120 fs/splice.c:662 pipe_to_sendpage+0x212/0x430 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x2cb/0x720 fs/splice.c:627 generic_splice_sendpage+0x10/0x20 fs/splice.c:833 do_splice_from fs/splice.c:852 [inline] do_splice+0xa25/0x12b0 fs/splice.c:1154 splice_from_pipe+0xbb/0x120 fs/splice.c:662 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x248/0x300 fs/splice.c:1408 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 generic_splice_sendpage+0x10/0x20 fs/splice.c:833 entry_SYSCALL_64_after_hwframe+0x49/0xbe do_splice_from fs/splice.c:852 [inline] do_splice+0xa25/0x12b0 fs/splice.c:1154 RIP: 0033:0x461229 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f55d96101a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x248/0x300 fs/splice.c:1408 RAX: ffffffffffffffda RBX: 000000000052bf00 RCX: 0000000000461229 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003 entry_SYSCALL_64_after_hwframe+0x49/0xbe RBP: 0000000000000001 R08: 000000011d100000 R09: 0000000000000000 RIP: 0033:0x461229 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 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 bc ff ff ff f7 d8 64 89 01 48 R13: 00000000004f8ff8 R14: 00000000004b500d R15: 00007f55d96106bc RSP: 002b:00007fa718de11a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 Modules linked in: RAX: ffffffffffffffda RBX: 000000000052bfa8 RCX: 0000000000461229 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 000000011d100000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00000000004f8ff8 R14: 00000000004b500d R15: 00007fa718de16bc CPU: 0 PID: 6711 Comm: syz-executor.0 Tainted: G B D 4.19.190-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x123/0x171 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0xa lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3088 [inline] prepare_alloc_pages mm/page_alloc.c:4346 [inline] __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393 __alloc_pages include/linux/gfp.h:496 [inline] __alloc_pages_node include/linux/gfp.h:509 [inline] kmem_getpages mm/slab.c:1412 [inline] cache_grow_begin+0x91/0x8d0 mm/slab.c:2682 cache_alloc_refill mm/slab.c:3049 [inline] ____cache_alloc mm/slab.c:3132 [inline] ____cache_alloc mm/slab.c:3115 [inline] slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0x65b/0x720 mm/slab.c:3647 __alloc_skb+0xa7/0x580 net/core/skbuff.c:193 alloc_skb_fclone include/linux/skbuff.h:1037 [inline] sk_stream_alloc_skb+0x9e/0x810 net/ipv4/tcp.c:884 do_tcp_sendpages+0x774/0x1d30 net/ipv4/tcp.c:1003 tcp_sendpage_locked net/ipv4/tcp.c:1106 [inline] tcp_sendpage_locked+0x63/0xa0 net/ipv4/tcp.c:1098 tcp_sendpage+0x37/0x50 net/ipv4/tcp.c:1116 inet_sendpage+0x122/0x600 net/ipv4/af_inet.c:815 kernel_sendpage+0x60/0xd0 net/socket.c:3378 sock_sendpage+0x6d/0xd0 net/socket.c:847 pipe_to_sendpage+0x212/0x430 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x2cb/0x720 fs/splice.c:627 splice_from_pipe+0xbb/0x120 fs/splice.c:662 generic_splice_sendpage+0x10/0x20 fs/splice.c:833 do_splice_from fs/splice.c:852 [inline] do_splice+0xa25/0x12b0 fs/splice.c:1154 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x248/0x300 fs/splice.c:1408 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x461229 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fbc04df01a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 000000000052bfa8 RCX: 0000000000461229 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 000000011d100000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00000000004f8ff8 R14: 00000000004b500d R15: 00007fbc04df06bc FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 ---[ end trace 9be803e010091cc9 ]--- RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:73 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:98 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:82 [inline] RIP: 0010:scatterwalk_copychunks+0x379/0x610 crypto/scatterwalk.c:55 CPU: 0 PID: 6715 Comm: syz-executor.2 Tainted: G B D 4.19.190-syzkaller #0 Code: ff ff 48 89 c7 e8 07 34 2a 00 4c 89 f2 48 c1 ea 03 42 80 3c 3a 00 0f 85 a8 01 00 00 48 8d 70 08 49 89 06 48 89 f2 48 c1 ea 03 <42> 0f b6 14 3a 84 d2 74 09 80 fa 03 0f 8e 6b 01 00 00 48 8b 5d d0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x123/0x171 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0xa lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x20 mm/slab_common.c:1588 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 __kmalloc_reserve.isra.39+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb_fclone include/linux/skbuff.h:1037 [inline] sk_stream_alloc_skb+0x9e/0x810 net/ipv4/tcp.c:884 do_tcp_sendpages+0x774/0x1d30 net/ipv4/tcp.c:1003 RSP: 0018:ffff8881de197498 EFLAGS: 00010202 tcp_sendpage_locked net/ipv4/tcp.c:1106 [inline] tcp_sendpage_locked+0x63/0xa0 net/ipv4/tcp.c:1098 tcp_sendpage+0x37/0x50 net/ipv4/tcp.c:1116 inet_sendpage+0x122/0x600 net/ipv4/af_inet.c:815 kernel_sendpage+0x60/0xd0 net/socket.c:3378 sock_sendpage+0x6d/0xd0 net/socket.c:847 pipe_to_sendpage+0x212/0x430 fs/splice.c:452 RAX: 0000000000000000 RBX: ffff8881db4c83ac RCX: 000000000000401d splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x2cb/0x720 fs/splice.c:627 splice_from_pipe+0xbb/0x120 fs/splice.c:662 generic_splice_sendpage+0x10/0x20 fs/splice.c:833 do_splice_from fs/splice.c:852 [inline] do_splice+0xa25/0x12b0 fs/splice.c:1154 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x248/0x300 fs/splice.c:1408 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff8881db4c83a0 RIP: 0033:0x461229 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa4ad6f31a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 000000000052bfa8 RCX: 0000000000461229 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 000000011d100000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00000000004f8ff8 R14: 00000000004b500d R15: 00007fa4ad6f36bc FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 RBP: ffff8881de1974f8 R08: ffffed103b760804 R09: ffffed103b760800 CPU: 0 PID: 6704 Comm: syz-executor.5 Tainted: G B D 4.19.190-syzkaller #0 R10: 0000000000000000 R11: ffff8881dbb0401c R12: 0000000000001000 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x123/0x171 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0xa lib/fault-inject.c:149 R13: 000000000000001d R14: ffff8881de197538 R15: dffffc0000000000 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x20 mm/slab_common.c:1588 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 __kmalloc_reserve.isra.39+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb_fclone include/linux/skbuff.h:1037 [inline] sk_stream_alloc_skb+0x9e/0x810 net/ipv4/tcp.c:884 do_tcp_sendpages+0x774/0x1d30 net/ipv4/tcp.c:1003 tcp_sendpage_locked net/ipv4/tcp.c:1106 [inline] tcp_sendpage_locked+0x63/0xa0 net/ipv4/tcp.c:1098 tcp_sendpage+0x37/0x50 net/ipv4/tcp.c:1116 FS: 00007f55d9610700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 inet_sendpage+0x122/0x600 net/ipv4/af_inet.c:815 kernel_sendpage+0x60/0xd0 net/socket.c:3378 sock_sendpage+0x6d/0xd0 net/socket.c:847 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 pipe_to_sendpage+0x212/0x430 fs/splice.c:452 CR2: 00007f7a9f4b7008 CR3: 00000001e9ab1002 CR4: 00000000001606e0 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x2cb/0x720 fs/splice.c:627 splice_from_pipe+0xbb/0x120 fs/splice.c:662 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 generic_splice_sendpage+0x10/0x20 fs/splice.c:833 do_splice_from fs/splice.c:852 [inline] do_splice+0xa25/0x12b0 fs/splice.c:1154 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x248/0x300 fs/splice.c:1408 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x461229 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb44f9d41a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 000000000052bf00 RCX: 0000000000461229 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 000000011d100000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00000000004f8ff8 R14: 00000000004b500d R15: 00007fb44f9d46bc FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 6725 Comm: syz-executor.2 Tainted: G B D 4.19.190-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x123/0x171 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0xa lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x20 mm/slab_common.c:1588 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x2dd/0x770 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] aead_request_alloc include/crypto/aead.h:425 [inline] tls_push_record+0xff/0x1600 net/tls/tls_sw.c:209 tls_sw_sendpage+0x462/0xc00 net/tls/tls_sw.c:585 inet_sendpage+0x122/0x600 net/ipv4/af_inet.c:815 kernel_sendpage+0x60/0xd0 net/socket.c:3378 sock_sendpage+0x6d/0xd0 net/socket.c:847 pipe_to_sendpage+0x212/0x430 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x2cb/0x720 fs/splice.c:627 splice_from_pipe+0xbb/0x120 fs/splice.c:662 generic_splice_sendpage+0x10/0x20 fs/splice.c:833 do_splice_from fs/splice.c:852 [inline] do_splice+0xa25/0x12b0 fs/splice.c:1154 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x248/0x300 fs/splice.c:1408 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x461229 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa4ad7141a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 000000000052bf00 RCX: 0000000000461229 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 000000011d100000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00000000004f8ff8 R14: 00000000004b500d R15: 00007fa4ad7146bc CPU: 1 PID: 6721 Comm: syz-executor.4 Tainted: G B D 4.19.190-syzkaller #0 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x123/0x171 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0xa lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3088 [inline] prepare_alloc_pages mm/page_alloc.c:4346 [inline] __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393