On Mon, Apr 23, 2018 at 12:20 PM, syzbot <syzbot+795f3a2b6f5ad776cc22@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > Hello, > > syzbot hit the following crash on upstream commit > 5ec83b22a2dd13180762c89698e4e2c2881a423c (Sun Apr 22 19:13:04 2018 +0000) > Merge tag '4.17-rc1-SMB3-CIFS' of git://git.samba.org/sfrench/cifs-2.6 > syzbot dashboard link: > https://syzkaller.appspot.com/bug?extid=795f3a2b6f5ad776cc22 > > So far this crash happened 2 times on upstream. > Unfortunately, I don't have any reproducer for this crash yet. > Raw console output: > https://syzkaller.appspot.com/x/log.txt?id=5291662095941632 > Kernel config: > https://syzkaller.appspot.com/x/.config?id=1808800213120130118 > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+795f3a2b6f5ad776cc22@xxxxxxxxxxxxxxxxxxxxxxxxx > It will help syzbot understand when the bug is fixed. See footer for > details. > If you forward the report, please keep this part and the footer. #syz dup: WARNING: kernel stack regs at (ptrval) in syzkaller has bad 'bp' value (ptrval) > (ptrval): 0000000000455389 (0x455389) > (ptrval): 0000000000000033 (0x33) > (ptrval): 0000000000000246 (0x246) > (ptrval): 00007f162d156c68 (0x7f162d156c68) > (ptrval): 000000000000002b (0x2b) > WARNING: kernel stack regs at (ptrval) in syz-executor0:7766 has bad > 'bp' value (ptrval) > binder: 7815:7817 got transaction to invalid handle > binder: 7815:7817 transaction failed 29201/-22, size 0-0 line 2848 > binder: undelivered TRANSACTION_ERROR: 29201 > binder: 7941:7942 ioctl c018620b 20000000 returned -14 > binder: 7941:7942 ioctl c0306201 20000240 returned -14 > binder_alloc: binder_alloc_mmap_handler: 7941 20000000-20002000 already > mapped failed -16 > binder: 7941:7951 ioctl c018620b 20000000 returned -14 > binder: 7941:7951 ioctl c0306201 20000240 returned -14 > FAULT_INJECTION: forcing a failure. > name failslab, interval 1, probability 0, space 0, times 1 > CPU: 1 PID: 8218 Comm: syz-executor2 Not tainted 4.17.0-rc1+ #13 > 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+0x1b9/0x294 lib/dump_stack.c:113 > fail_dump lib/fault-inject.c:51 [inline] > should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 > __should_failslab+0x124/0x180 mm/failslab.c:32 > should_failslab+0x9/0x14 mm/slab_common.c:1522 > slab_pre_alloc_hook mm/slab.h:423 [inline] > slab_alloc mm/slab.c:3378 [inline] > kmem_cache_alloc_trace+0x2cb/0x780 mm/slab.c:3618 > kmalloc include/linux/slab.h:512 [inline] > kzalloc include/linux/slab.h:701 [inline] > alloc_pipe_info+0x16d/0x580 fs/pipe.c:633 > splice_direct_to_actor+0x6e7/0x8d0 fs/splice.c:920 > do_splice_direct+0x2cc/0x400 fs/splice.c:1061 > do_sendfile+0x60f/0xe00 fs/read_write.c:1440 > __do_sys_sendfile64 fs/read_write.c:1495 [inline] > __se_sys_sendfile64 fs/read_write.c:1487 [inline] > __x64_sys_sendfile64+0x155/0x240 fs/read_write.c:1487 > do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x455389 > RSP: 002b:00007fd5ef4adc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 > RAX: ffffffffffffffda RBX: 00007fd5ef4ae6d4 RCX: 0000000000455389 > RDX: 0000000020000140 RSI: 0000000000000013 RDI: 0000000000000014 > RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000015 > R13: 00000000000004cf R14: 00000000006fa408 R15: 0000000000000000 > FAULT_INJECTION: forcing a failure. > name failslab, interval 1, probability 0, space 0, times 0 > CPU: 0 PID: 8252 Comm: syz-executor2 Not tainted 4.17.0-rc1+ #13 > 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+0x1b9/0x294 lib/dump_stack.c:113 > fail_dump lib/fault-inject.c:51 [inline] > should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 > __should_failslab+0x124/0x180 mm/failslab.c:32 > should_failslab+0x9/0x14 mm/slab_common.c:1522 > slab_pre_alloc_hook mm/slab.h:423 [inline] > slab_alloc mm/slab.c:3378 [inline] > __do_kmalloc mm/slab.c:3716 [inline] > __kmalloc+0x2c8/0x760 mm/slab.c:3727 > kmalloc_array include/linux/slab.h:631 [inline] > kcalloc include/linux/slab.h:642 [inline] > alloc_pipe_info+0x2a0/0x580 fs/pipe.c:650 > splice_direct_to_actor+0x6e7/0x8d0 fs/splice.c:920 > do_splice_direct+0x2cc/0x400 fs/splice.c:1061 > do_sendfile+0x60f/0xe00 fs/read_write.c:1440 > __do_sys_sendfile64 fs/read_write.c:1495 [inline] > __se_sys_sendfile64 fs/read_write.c:1487 [inline] > __x64_sys_sendfile64+0x155/0x240 fs/read_write.c:1487 > do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x455389 > RSP: 002b:00007fd5ef4adc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 > RAX: ffffffffffffffda RBX: 00007fd5ef4ae6d4 RCX: 0000000000455389 > RDX: 0000000020000140 RSI: 0000000000000013 RDI: 0000000000000014 > RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000015 > R13: 00000000000004cf R14: 00000000006fa408 R15: 0000000000000001 > FAULT_INJECTION: forcing a failure. > name failslab, interval 1, probability 0, space 0, times 0 > CPU: 0 PID: 8283 Comm: syz-executor2 Not tainted 4.17.0-rc1+ #13 > 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+0x1b9/0x294 lib/dump_stack.c:113 > fail_dump lib/fault-inject.c:51 [inline] > should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 > __should_failslab+0x124/0x180 mm/failslab.c:32 > should_failslab+0x9/0x14 mm/slab_common.c:1522 > slab_pre_alloc_hook mm/slab.h:423 [inline] > slab_alloc_node mm/slab.c:3299 [inline] > kmem_cache_alloc_node_trace+0x26f/0x770 mm/slab.c:3661 > __do_kmalloc_node mm/slab.c:3681 [inline] > __kmalloc_node+0x33/0x70 mm/slab.c:3689 > kmalloc_node include/linux/slab.h:554 [inline] > kvmalloc_node+0x6b/0x100 mm/util.c:421 > kvmalloc include/linux/mm.h:550 [inline] > kvmalloc_array include/linux/mm.h:566 [inline] > get_pages_array lib/iov_iter.c:1097 [inline] > pipe_get_pages_alloc lib/iov_iter.c:1123 [inline] > iov_iter_get_pages_alloc+0x7be/0x14e0 lib/iov_iter.c:1144 > default_file_splice_read+0x1c7/0xad0 fs/splice.c:390 > do_splice_to+0x12e/0x190 fs/splice.c:880 > splice_direct_to_actor+0x268/0x8d0 fs/splice.c:952 > do_splice_direct+0x2cc/0x400 fs/splice.c:1061 > do_sendfile+0x60f/0xe00 fs/read_write.c:1440 > __do_sys_sendfile64 fs/read_write.c:1495 [inline] > __se_sys_sendfile64 fs/read_write.c:1487 [inline] > __x64_sys_sendfile64+0x155/0x240 fs/read_write.c:1487 > do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x455389 > RSP: 002b:00007fd5ef4adc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 > RAX: ffffffffffffffda RBX: 00007fd5ef4ae6d4 RCX: 0000000000455389 > RDX: 0000000020000140 RSI: 0000000000000013 RDI: 0000000000000014 > RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000015 > FAULT_INJECTION: forcing a failure. > name failslab, interval 1, probability 0, space 0, times 0 > R13: 00000000000004cf R14: 00000000006fa408 R15: 0000000000000002 > CPU: 1 PID: 8308 Comm: syz-executor1 Not tainted 4.17.0-rc1+ #13 > 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+0x1b9/0x294 lib/dump_stack.c:113 > fail_dump lib/fault-inject.c:51 [inline] > should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 > __should_failslab+0x124/0x180 mm/failslab.c:32 > should_failslab+0x9/0x14 mm/slab_common.c:1522 > slab_pre_alloc_hook mm/slab.h:423 [inline] > slab_alloc_node mm/slab.c:3299 [inline] > kmem_cache_alloc_node+0x272/0x780 mm/slab.c:3642 > __alloc_skb+0x111/0x780 net/core/skbuff.c:193 > FAULT_INJECTION: forcing a failure. > name failslab, interval 1, probability 0, space 0, times 0 > alloc_skb include/linux/skbuff.h:987 [inline] > netlink_alloc_large_skb net/netlink/af_netlink.c:1182 [inline] > netlink_sendmsg+0xb01/0xfa0 net/netlink/af_netlink.c:1876 > sock_sendmsg_nosec net/socket.c:629 [inline] > sock_sendmsg+0xd5/0x120 net/socket.c:639 > ___sys_sendmsg+0x805/0x940 net/socket.c:2117 > __sys_sendmsg+0x115/0x270 net/socket.c:2155 > __do_sys_sendmsg net/socket.c:2164 [inline] > __se_sys_sendmsg net/socket.c:2162 [inline] > __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2162 > do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x455389 > RSP: 002b:00007fd1bb0a4c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e > RAX: ffffffffffffffda RBX: 00007fd1bb0a56d4 RCX: 0000000000455389 > RDX: 0000000000000000 RSI: 0000000020023000 RDI: 0000000000000013 > RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014 > R13: 00000000000004f8 R14: 00000000006fa7e0 R15: 0000000000000000 > CPU: 0 PID: 8314 Comm: syz-executor2 Not tainted 4.17.0-rc1+ #13 > 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+0x1b9/0x294 lib/dump_stack.c:113 > fail_dump lib/fault-inject.c:51 [inline] > should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 > __should_failslab+0x124/0x180 mm/failslab.c:32 > should_failslab+0x9/0x14 mm/slab_common.c:1522 > slab_pre_alloc_hook mm/slab.h:423 [inline] > slab_alloc_node mm/slab.c:3299 [inline] > kmem_cache_alloc_node_trace+0x26f/0x770 mm/slab.c:3661 > __do_kmalloc_node mm/slab.c:3681 [inline] > __kmalloc_node+0x33/0x70 mm/slab.c:3689 > kmalloc_node include/linux/slab.h:554 [inline] > kvmalloc_node+0x6b/0x100 mm/util.c:421 > kvmalloc include/linux/mm.h:550 [inline] > seq_buf_alloc fs/seq_file.c:32 [inline] > seq_read+0xa33/0x1520 fs/seq_file.c:211 > do_loop_readv_writev fs/read_write.c:700 [inline] > do_iter_read+0x4a3/0x660 fs/read_write.c:924 > vfs_readv+0x14f/0x1a0 fs/read_write.c:986 > kernel_readv fs/splice.c:361 [inline] > default_file_splice_read+0x514/0xad0 fs/splice.c:416 > do_splice_to+0x12e/0x190 fs/splice.c:880 > splice_direct_to_actor+0x268/0x8d0 fs/splice.c:952 > do_splice_direct+0x2cc/0x400 fs/splice.c:1061 > do_sendfile+0x60f/0xe00 fs/read_write.c:1440 > __do_sys_sendfile64 fs/read_write.c:1495 [inline] > __se_sys_sendfile64 fs/read_write.c:1487 [inline] > __x64_sys_sendfile64+0x155/0x240 fs/read_write.c:1487 > do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x455389 > RSP: 002b:00007fd5ef4adc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 > RAX: ffffffffffffffda RBX: 00007fd5ef4ae6d4 RCX: 0000000000455389 > RDX: 0000000020000140 RSI: 0000000000000013 RDI: 0000000000000014 > RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000015 > R13: 00000000000004cf R14: 00000000006fa408 R15: 0000000000000003 > FAULT_INJECTION: forcing a failure. > name failslab, interval 1, probability 0, space 0, times 0 > CPU: 0 PID: 8340 Comm: syz-executor2 Not tainted 4.17.0-rc1+ #13 > 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+0x1b9/0x294 lib/dump_stack.c:113 > fail_dump lib/fault-inject.c:51 [inline] > should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 > FAULT_INJECTION: forcing a failure. > name failslab, interval 1, probability 0, space 0, times 0 > __should_failslab+0x124/0x180 mm/failslab.c:32 > should_failslab+0x9/0x14 mm/slab_common.c:1522 > slab_pre_alloc_hook mm/slab.h:423 [inline] > slab_alloc mm/slab.c:3378 [inline] > kmem_cache_alloc_trace+0x4b/0x780 mm/slab.c:3618 > kmalloc include/linux/slab.h:512 [inline] > __memcg_schedule_kmem_cache_create mm/memcontrol.c:2195 [inline] > memcg_schedule_kmem_cache_create mm/memcontrol.c:2223 [inline] > memcg_kmem_get_cache+0x474/0x870 mm/memcontrol.c:2285 > slab_pre_alloc_hook mm/slab.h:428 [inline] > slab_alloc_node mm/slab.c:3299 [inline] > kmem_cache_alloc_node_trace+0x1a4/0x770 mm/slab.c:3661 > __do_kmalloc_node mm/slab.c:3681 [inline] > __kmalloc_node+0x33/0x70 mm/slab.c:3689 > kmalloc_node include/linux/slab.h:554 [inline] > kvmalloc_node+0x6b/0x100 mm/util.c:421 > kvmalloc include/linux/mm.h:550 [inline] > seq_buf_alloc fs/seq_file.c:32 [inline] > seq_read+0xa33/0x1520 fs/seq_file.c:211 > do_loop_readv_writev fs/read_write.c:700 [inline] > do_iter_read+0x4a3/0x660 fs/read_write.c:924 > vfs_readv+0x14f/0x1a0 fs/read_write.c:986 > kernel_readv fs/splice.c:361 [inline] > default_file_splice_read+0x514/0xad0 fs/splice.c:416 > do_splice_to+0x12e/0x190 fs/splice.c:880 > > > --- > This bug is generated by a dumb bot. It may contain errors. > See https://goo.gl/tpsmEJ for details. > Direct all questions to syzkaller@xxxxxxxxxxxxxxxx. > > syzbot will keep track of this bug report. > If you forgot to add the Reported-by tag, once the fix for this bug is > merged > into any tree, please reply to this email with: > #syz fix: exact-commit-title > To mark this as a duplicate of another syzbot report, please reply with: > #syz dup: exact-subject-of-another-report > If it's a one-off invalid bug report, please reply with: > #syz invalid > Note: if the crash happens again, it will cause creation of a new bug > report. > Note: all commands must start from beginning of the line in the email body. > > -- > You received this message because you are subscribed to the Google Groups > "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to syzkaller-bugs+unsubscribe@xxxxxxxxxxxxxxxx. > To view this discussion on the web visit > https://groups.google.com/d/msgid/syzkaller-bugs/0000000000007cdcf6056a81617f%40google.com. > For more options, visit https://groups.google.com/d/optout.
