syzbot


WARNING: kernel stack regs has bad 'bp' value (4)

Status: auto-closed as invalid on 2019/08/25 01:18
Reported-by: syzbot+f337218531b644bdeb70@syzkaller.appspotmail.com
First crash: 2139d, last: 1912d
Discussions (3)
Title Replies (including bot) Last reply
Reminder: 25 open syzbot bugs in kvm subsystem 1 (1) 2019/07/24 01:43
Reminder: 25 open syzbot bugs in kvm subsystem 1 (1) 2019/06/24 05:21
WARNING: kernel stack regs has bad 'bp' value (4) 1 (2) 2018/07/16 08:30
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING: kernel stack regs has bad 'bp' value C 66131 2430d 2475d 3/26 fixed on 2017/10/24 07:07
upstream WARNING: kernel stack regs has bad 'bp' value (3) C 7971 2145d 2300d 8/26 fixed on 2018/07/09 18:05
upstream WARNING: kernel stack regs has bad 'bp' value (2) C 16238 2302d 2366d 4/26 fixed on 2018/02/01 10:32

Sample crash report:
==================================================================
WARNING: kernel stack regs at 00000000cbe7397f in kworker/u4:0:7 has bad 'bp' value 000000009306aa8a
unwind stack type:0 next_sp:          (null) mask:0x2 graph_idx:0
0000000035eaafc2: ffff8880a9466bf0 (0xffff8880a9466bf0)
0000000093b71899: ffffffff812f549a (__save_stack_trace+0x7a/0xf0)
000000002161d63e: 0000000000000000 ...
00000000a570ae62: ffff8880a9460000 (0xffff8880a9460000)
00000000a2607351: ffff8880a9468000 (0xffff8880a9468000)
000000006851b40f: 0000000000000000 ...
00000000bdf5ca3b: 0000000000000002 (0x2)
0000000048e92009: ffff8880a94581c0 (0xffff8880a94581c0)
000000002667e2b7: 0000010100000000 (0x10100000000)
000000006031ed4d: 0000000000000000 ...
000000004143cc89: ffff8880a9466b60 (0xffff8880a9466b60)
000000009679dc03: ffffffff812b76f9 (__switch_to+0x879/0x1270)
000000001716e505: ffff8880a9467468 (0xffff8880a9467468)
000000001e17ed6c: 6064c232decee600 (0x6064c232decee600)
0000000092288507: ffff8880a9466d30 (0xffff8880a9466d30)
00000000cbcccca0: ffffffff8ad9ed38 (stack_trace+0x1425d8/0x400020)
00000000485426aa: ffff8880a9466d34 (0xffff8880a9466d34)
0000000040230466: dffffc0000000000 (0xdffffc0000000000)
000000004cdbb01f: ffff8880a9466c00 (0xffff8880a9466c00)
0000000032507d53: ffffffff812f552a (save_stack_trace+0x1a/0x20)
000000002b150aa8: ffff8880a9466c40 (0xffff8880a9466c40)
00000000660e70cf: ffffffff81634aa0 (save_trace+0xe0/0x290)
000000009427cb09: ffff8880a94581c0 (0xffff8880a94581c0)
00000000bf6d9749: ffff8880a9458a68 (0xffff8880a9458a68)
000000006dbbee94: ffff8880a94581c0 (0xffff8880a94581c0)
0000000075e3329a: 0000000000000002 (0x2)
00000000ac972baf: dffffc0000000000 (0xdffffc0000000000)
00000000f7856fee: ffff8880a9458a88 (0xffff8880a9458a88)
00000000febfc959: ffff8880a9466ee0 (0xffff8880a9466ee0)
00000000ae4aa9dd: ffffffff81640e1e (__lock_acquire+0x352e/0x4a30)
00000000836ed645: 0000000000000028 (0x28)
00000000e6b53f64: ffff8880a94581c0 (0xffff8880a94581c0)
0000000005268bb6: ffff888000000002 (0xffff888000000002)
000000001b381ab1: f6fb88b2644d8f83 (0xf6fb88b2644d8f83)
0000000083cf49a6: fffffbfff14b7b2e (0xfffffbfff14b7b2e)
000000004ea1a771: ffff8880a9466da8 (0xffff8880a9466da8)
0000000032c3c17c: ffff8880a9466d80 (0xffff8880a9466d80)
000000002155c85a: f6fb88b200000000 (0xf6fb88b200000000)
00000000e7cf5756: ffff8880a9466d10 (0xffff8880a9466d10)
00000000ba5a90e1: ffff8880a9466d38 (0xffff8880a9466d38)
0000000031439cae: ffff888000000002 (0xffff888000000002)
000000004616fb7a: ffffed101528cda2 (0xffffed101528cda2)
00000000eed00dd6: ffff8880a9466d30 (0xffff8880a9466d30)
0000000079a880c5: ffff8880a9466d70 (0xffff8880a9466d70)
0000000062221492: ffff8880a9458a30 (0xffff8880a9458a30)
00000000540e80d2: ffff8880a9458ad8 (0xffff8880a9458ad8)
0000000056fd6d9b: ffff8880a9458a38 (0xffff8880a9458a38)
00000000355cd83d: ffff8880a9458a40 (0xffff8880a9458a40)
00000000a59326d8: 1ffff1101528cd9e (0x1ffff1101528cd9e)
00000000132e1c34: ffff8880a9458ab8 (0xffff8880a9458ab8)
00000000b72f991f: 0000000041b58ab3 (0x41b58ab3)
000000003373c220: ffffffff893a9180 (ORMASK+0x9c00/0x1c0234)
000000007a50cc26: ffffffff8163d8f0 (mark_held_locks+0x100/0x100)
0000000012c586b6: 0000000000000000 ...
0000000077abf117: 0000000000000028 (0x28)
000000006b10c944: ffff8880a9466dc0 (0xffff8880a9466dc0)
0000000056393c01: ffffffff86eaefb9 (gue6_err_proto_handler+0x199/0x280)
0000000041480e2c: 0000000100000003 (0x100000003)
000000000eda4b25: 00057b450000000c (0x57b450000000c)
00000000fd3e658a: ffffffff8ad9ed38 (stack_trace+0x1425d8/0x400020)
0000000060aee415: ffffffff00000000 (0xffffffff00000000)
0000000006b3b81e: ffffffff86eaee20 (gre_rcv+0x1600/0x1600)
00000000b45c901f: ffffffff8390e088 (check_preemption_disabled+0x48/0x290)
00000000c71ee9b3: ffffffff8a3daa20 (udp6_seq_afinfo+0x40/0x40)
00000000e25a42c1: 1ffff1101528cdb6 (0x1ffff1101528cdb6)
000000006ad88441: ffffed101528cde8 (0xffffed101528cde8)
000000001bb2a6a8: dffffc0000000000 (0xdffffc0000000000)
00000000c7d1457b: ffff8880a9466e10 (0xffff8880a9466e10)
0000000079a7762f: ffffffff8b10f4c0 (lock_classes+0x6acc0/0x27fee0)
00000000d57f1094: ca5b7319c3f31e00 (0xca5b7319c3f31e00)
00000000095b5c6e: ca5b7319c3f31e00 (0xca5b7319c3f31e00)
00000000aa6cb515: ffff8880a0d1a440 (0xffff8880a0d1a440)
0000000089b6408f: ffff88809f8f6db0 (0xffff88809f8f6db0)
00000000d584e436: 0000000000000000 ...
00000000e613add6: 0000000000000040 (0x40)
00000000adb1b1e5: 0000000000000000 ...
00000000bab231a0: ffff8880a9466e48 (0xffff8880a9466e48)
00000000266146fd: ffffffff86eaf561 (gue6_err+0x4c1/0x6b0)
0000000035b90054: 0000000000000000 ...
00000000c18b3aef: ffffffeaa945eac0 (0xffffffeaa945eac0)
000000005c79c36f: 0000000000000000 ...
00000000d21c34c3: 0000002800000000 (0x2800000000)
0000000042f98bfe: ffffffff8aaba328 (lock_chains+0x65de8/0x200020)
00000000297f77a0: 0000000000000000 ...
00000000feb0c746: ffff8880a0d1a500 (0xffff8880a0d1a500)
000000000eb3ee2f: ffff8880a0d1a508 (0xffff8880a0d1a508)
00000000de27cc6f: 0000000000000000 ...
00000000508fc5b6: ffff88809f8f6d88 (0xffff88809f8f6d88)
000000006c4bb67a: ffffffff8a5d3108 (ip6tun_encaps+0x8/0x40)
00000000f4e13d98: ffffed101528cde8 (0xffffed101528cde8)
000000000bf0d834: ffffffff8aaba328 (lock_chains+0x65de8/0x200020)
00000000705af9ff: ffffffff86eaf0a0 (gue6_err_proto_handler+0x280/0x280)
00000000513172b8: 0000000000000001 (0x1)
00000000c37b44a3: ffff8880a9466fc8 (0xffff8880a9466fc8)
00000000a8dffb84: 0000000000000000 ...
00000000d67e0c19: ffffffff81635c76 (__lock_is_held+0xb6/0x140)
00000000069db07f: ffff8880a9466f40 (0xffff8880a9466f40)
00000000f02c1911: ffff8880a0d1a500 (0xffff8880a0d1a500)
000000000e9f1332: ffffffff8ab07828 (lock_chains+0xb32e8/0x200020)
0000000001014eeb: ffff8880a0d1a4f2 (0xffff8880a0d1a4f2)
00000000a60edf66: ffff8880a0d1a450 (0xffff8880a0d1a450)
00000000ce1d0cdc: 0000000000000000 ...
000000008f0423c9: ffff888000000001 (0xffff888000000001)
00000000243296cd: 0000000000480040 (0x480040)
000000009acdff6f: 0000000300000001 (0x300000001)
000000006e7956cc: 6064c232decee600 (0x6064c232decee600)
000000007b7d6070: 1ffff1101528cddc (0x1ffff1101528cddc)
00000000931eda68: ffff8880a94581c0 (0xffff8880a94581c0)
00000000d2480e3b: ffffffff899994d8 (logbuf_lock+0x18/0x60)
000000007481767d: 0000000000000000 ...
00000000d2ec075d: ffff8880a9466fe0 (0xffff8880a9466fe0)
00000000df3edc99: ffffffff8164478b (lock_acquire+0x1db/0x570)
000000000e4e88b9: 0000000000000000 ...
0000000081a48261: ffffffff81681d9a (vprintk_emit+0x17a/0x960)
000000009a273634: 0000000000000000 ...
00000000c5d86cdf: ffff8880a9466f50 (0xffff8880a9466f50)
00000000e861d91d: ffffffff00000001 (0xffffffff00000001)
000000004b7a332f: 1ffff1101528cde7 (0x1ffff1101528cde7)
000000009743060b: 0000000000000086 (0x86)
000000000cdc50e7: 0000000000000000 ...
00000000ec58b49b: 0000000041b58ab3 (0x41b58ab3)
00000000e4afebc6: ffffffff89384a00 (regoff.31251+0x3adb20/0x3c7750)
0000000062755987: ffffffff816445b0 (lock_release+0xc40/0xc40)
0000000098aab6d5: ffff8880a9467000 (0xffff8880a9467000)
00000000565328a0: ffffffff818848a8 (trace_hardirqs_off+0xb8/0x310)
000000008aa2cc23: 6064c232decee600 (0x6064c232decee600)
00000000833d4f2e: 0000000000000000 ...
000000008375f145: ffff8880a94581c0 (0xffff8880a94581c0)
00000000d990ee99: 0000000000000000 ...
00000000191c1cc8: ffffffff89385123 (regoff.31251+0x3ae243/0x3c7750)
00000000db5daf51: ffffffff818847f0 (trace_hardirqs_on_caller+0x310/0x310)
0000000078cf8d52: ffff8880a9467228 (0xffff8880a9467228)
00000000f428ea23: ffffffff8163de62 (__lock_acquire+0x572/0x4a30)
00000000f5e43139: 0000000000000001 (0x1)
0000000053f0b03b: 0000000000000003 (0x3)
0000000018b0c4bc: 6064c232decee600 (0x6064c232decee600)
00000000304f1b1e: 1ffff1101528ce08 (0x1ffff1101528ce08)
00000000e5780475: ffffffff899994c0 (log_wait+0x80/0x80)
000000006b9e8051: 00000000ffffffff (0xffffffff)
000000009974728b: 0000000000000000 ...
0000000088d6c756: ffff8880a94670e0 (0xffff8880a94670e0)
000000006453f96a: ffff8880a9467000 (0xffff8880a9467000)
000000005a460294: ffffffff87f4036f (_raw_spin_lock+0x2f/0x40)
00000000827ecd4b: ffffffff81681d9a (vprintk_emit+0x17a/0x960)
000000006db3aeef: 0000000000000000 ...
00000000ca5ace32: ffff8880a9467108 (0xffff8880a9467108)
000000000ea84399: ffffffff81681d9a (vprintk_emit+0x17a/0x960)
00000000cb7cb9a2: ffff8880a9467188 (0xffff8880a9467188)
00000000bc4a7cfa: ffffffff8939d798 (regoff.31251+0x3c68b8/0x3c7750)
00000000814f191b: 0000000000000000 ...
000000008c85b52d: 1ffff11000000000 (0x1ffff11000000000)
00000000ef44fabc: 0000000000000012 (0x12)
00000000cd7b7c72: 0000000041b58ab3 (0x41b58ab3)
00000000fed1c105: ffffffff893aac40 (ORMASK+0xb6c0/0x1c0234)
000000009429d208: ffffffff81681c20 (wake_up_klogd+0x180/0x180)
00000000141cb23c: 1ffff1101528ce15 (0x1ffff1101528ce15)
000000006c6576dc: ffffed101528ce47 (0xffffed101528ce47)
00000000b2b9a172: dffffc0000000000 (0xdffffc0000000000)
00000000cc0de29e: ffff8880a9467108 (0xffff8880a9467108)
00000000f878dc97: 0000000000000001 (0x1)
00000000c5269944: ca5b7319c3f31e00 (0xca5b7319c3f31e00)
00000000b5a101ae: ca5b7319c3f31e00 (0xca5b7319c3f31e00)
00000000b599adc1: ffff8880a0d1a440 (0xffff8880a0d1a440)
00000000b3de08f7: ffff88809f8f6db0 (0xffff88809f8f6db0)
000000005a40dbed: ffff8880a0d1a4f2 (0xffff8880a0d1a4f2)
000000007d171ced: 0000000000000040 (0x40)
00000000fcae7714: 0000000000000000 ...
000000001cf724d6: ffff8880a9467140 (0xffff8880a9467140)
00000000bf904504: ffffffff86eaf561 (gue6_err+0x4c1/0x6b0)
00000000dfe122fc: 0000000000000000 ...
00000000724a54a4: ffffffeaa945eac0 (0xffffffeaa945eac0)
00000000fada85e6: 6064c232decee600 (0x6064c232decee600)
0000000044f66c71: ffffffff8939d798 (regoff.31251+0x3c68b8/0x3c7750)
000000005c498452: ffff8880a9467188 (0xffff8880a9467188)
000000003acde2fe: ffff8880a9467188 (0xffff8880a9467188)
000000009218d1de: ffffffff899314c0 (last_mm_ctx_id+0x840/0x840)
0000000097dfdd4a: ffffed101528ce59 (0xffffed101528ce59)
00000000513f7c75: ffff8880a9467128 (0xffff8880a9467128)
0000000094ace7e2: ffffffff816825a8 (vprintk_default+0x28/0x30)
000000004a9a81ca: 0000000000000000 ...
000000003ec0d43d: ffffffff8939d798 (regoff.31251+0x3c68b8/0x3c7750)
00000000cc07d8c1: ffff8880a9467158 (0xffff8880a9467158)
000000004c8a9d3b: ffffffff81684cbe (vprintk_func+0x7e/0x189)
00000000d35e1670: 0000000000000001 (0x1)
00000000757c51b3: ffffed101528ce2d (0xffffed101528ce2d)
00000000c42c1e67: ffffffff8939d798 (regoff.31251+0x3c68b8/0x3c7750)
00000000113fb2de: 00000000fffffffc (0xfffffffc)
000000008209c465: ffff8880a9467228 (0xffff8880a9467228)
000000000212b09a: ffffffff8168393e (printk+0xba/0xed)
00000000206ac23c: 0000000041b58ab3 (0x41b58ab3)
00000000f203e377: ffffffff893aad26 (ORMASK+0xb7a6/0x1c0234)
0000000074c188f2: ffffffff81683884 (kmsg_dump_rewind_nolock+0xe4/0xe4)
0000000012ed6b50: 0000000000000000 ...
000000002ad87097: ffff888000000008 (0xffff888000000008)
00000000515648ce: ffff8880a9467238 (0xffff8880a9467238)
000000003e40e332: ffff8880a94671e8 (0xffff8880a94671e8)
000000003fc81362: ffff8880a0d1a508 (0xffff8880a0d1a508)
0000000018145cd9: 1ffff1101528ce3b (0x1ffff1101528ce3b)
00000000d3607f0c: 0000000000000000 ...
0000000052784e2b: fffffffffffffff8 (0xfffffffffffffff8)
00000000011dfa51: ffff88809a6c0080 (0xffff88809a6c0080)
0000000076ddcdd8: ffffffff00000028 (0xffffffff00000028)
00000000a549f35f: ffff8880a0d1a440 (0xffff8880a0d1a440)
000000009599bb32: 0000000041b58ab3 (0x41b58ab3)
00000000865a5043: 6064c232decee600 (0x6064c232decee600)
0000000091b9bf06: ffffffff899dae40 (tracepoint_srcu+0x1aa0/0x1aa0)

Crashes (13):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/01/11 23:25 upstream de6629eb262e c3f3344c .config console log report ci-upstream-kasan-gce
2018/07/29 00:56 upstream dd63bf22fccd ebf656d7 .config console log report ci-upstream-kasan-gce
2018/07/28 04:55 upstream 864af0d40cdc ebf656d7 .config console log report ci-upstream-kasan-gce
2018/07/27 01:51 upstream cd3f77d74ac3 375a3e31 .config console log report ci-upstream-kasan-gce
2018/07/26 23:31 upstream cd3f77d74ac3 375a3e31 .config console log report ci-upstream-kasan-gce
2018/07/25 22:36 upstream 6e77b267723c 375a3e31 .config console log report ci-upstream-kasan-gce
2018/07/25 15:05 upstream 9981b4fb8684 375a3e31 .config console log report ci-upstream-kasan-gce
2018/07/25 13:09 upstream 9981b4fb8684 375a3e31 .config console log report ci-upstream-kasan-gce
2018/07/25 11:20 upstream 9981b4fb8684 375a3e31 .config console log report ci-upstream-kasan-gce-root
2018/07/25 02:21 upstream 9981b4fb8684 375a3e31 .config console log report ci-upstream-kasan-gce-root
2018/07/14 16:27 upstream 2db39a2f491a 92a49505 .config console log report ci-upstream-kasan-gce-root
2018/07/13 06:20 upstream 63f047771621 06c33b3a .config console log report ci-upstream-kasan-gce
2019/02/26 01:17 linux-next 2b46440ea715 8022bafd .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.