syzbot


BUG: unable to handle kernel paging request in stack_depot_save (4)
Status: auto-closed as invalid on 2022/01/28 22:39
Reported-by: syzbot+2be5edffbc16e48d58ae@syzkaller.appspotmail.com
First crash: 208d, last: 208d
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: unable to handle kernel paging request in stack_depot_save 1 1071d 1067d 0/22 auto-closed as invalid on 2019/10/25 08:36
upstream BUG: unable to handle kernel paging request in stack_depot_save (3) 9 391d 396d 0/22 auto-closed as invalid on 2021/07/30 17:47
upstream BUG: unable to handle kernel paging request in stack_depot_save (2) 1 814d 810d 0/22 auto-closed as invalid on 2020/06/02 15:03

Sample crash report:
BUG: unable to handle page fault for address: 000000000770007f
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 10b26067 P4D 10b26067 PUD 7f555067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 26683 Comm: syz-executor.4 Not tainted 5.15.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:find_stack lib/stackdepot.c:209 [inline]
RIP: 0010:stack_depot_save+0x12b/0x4e0 lib/stackdepot.c:281
Code: 05 4a c8 5b 0c 89 da 81 e2 ff ff 0f 00 4c 8d 3c d0 4d 8b 37 4d 85 f6 75 11 e9 94 00 00 00 4d 8b 36 4d 85 f6 0f 84 88 00 00 00 <41> 39 5e 08 75 ee 45 3b 66 0c 75 e8 31 c0 49 8b 4c c6 18 48 39 4c
RSP: 0018:ffffc9000632f2b0 EFLAGS: 00010206
RAX: ffff88823b000000 RBX: 000000008f479a73 RCX: 0000000000000002
RDX: 0000000000079a73 RSI: 0000000000002a20 RDI: 00000000a7e63e1f
RBP: ffffc9000632f320 R08: 0000000039083d28 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000016
R13: 0000000000000016 R14: 0000000007700077 R15: ffff88823b3cd398
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:00000000f453db40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000000770007f CR3: 00000000464ad000 CR4: 00000000003506e0
Call Trace:
 kasan_save_stack+0x32/0x40 mm/kasan/common.c:40
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 __kasan_slab_alloc+0x83/0xb0 mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook mm/slab.h:519 [inline]
 slab_alloc_node mm/slub.c:3213 [inline]
 slab_alloc mm/slub.c:3221 [inline]
 kmem_cache_alloc+0x142/0x390 mm/slub.c:3226
 radix_tree_node_alloc.constprop.0+0x1e4/0x350 lib/radix-tree.c:251
 idr_get_free+0x554/0xa60 lib/radix-tree.c:1505
 idr_alloc_u32+0x16c/0x2c0 lib/idr.c:46
 idr_alloc_cyclic+0x102/0x230 lib/idr.c:125
 __kernfs_new_node+0x117/0x8b0 fs/kernfs/dir.c:591
 kernfs_new_node+0x93/0x120 fs/kernfs/dir.c:647
 __kernfs_create_file+0x51/0x350 fs/kernfs/file.c:985
 sysfs_add_file_mode_ns+0x226/0x540 fs/sysfs/file.c:317
 create_files fs/sysfs/group.c:64 [inline]
 internal_create_group+0x328/0xb20 fs/sysfs/group.c:149
 internal_create_groups.part.0+0x90/0x140 fs/sysfs/group.c:189
 internal_create_groups fs/sysfs/group.c:185 [inline]
 sysfs_create_groups+0x25/0x50 fs/sysfs/group.c:215
 device_add_groups drivers/base/core.c:2475 [inline]
 device_add_attrs drivers/base/core.c:2634 [inline]
 device_add+0x14b9/0x1ee0 drivers/base/core.c:3347
 netdev_register_kobject+0x181/0x430 net/core/net-sysfs.c:1955
 register_netdevice+0xd33/0x1500 net/core/dev.c:10306
 __tun_chr_ioctl.isra.0+0x2be2/0x4230 drivers/net/tun.c:2746
 __do_compat_sys_ioctl+0x1c7/0x290 fs/ioctl.c:972
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf6f43549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f453d5fc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000400454ca
RDX: 00000000200000c0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: 000000000770007f
---[ end trace 78d7f96b4a70b9e3 ]---
RIP: 0010:find_stack lib/stackdepot.c:209 [inline]
RIP: 0010:stack_depot_save+0x12b/0x4e0 lib/stackdepot.c:281
Code: 05 4a c8 5b 0c 89 da 81 e2 ff ff 0f 00 4c 8d 3c d0 4d 8b 37 4d 85 f6 75 11 e9 94 00 00 00 4d 8b 36 4d 85 f6 0f 84 88 00 00 00 <41> 39 5e 08 75 ee 45 3b 66 0c 75 e8 31 c0 49 8b 4c c6 18 48 39 4c
RSP: 0018:ffffc9000632f2b0 EFLAGS: 00010206
RAX: ffff88823b000000 RBX: 000000008f479a73 RCX: 0000000000000002
RDX: 0000000000079a73 RSI: 0000000000002a20 RDI: 00000000a7e63e1f
RBP: ffffc9000632f320 R08: 0000000039083d28 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000016
R13: 0000000000000016 R14: 0000000007700077 R15: ffff88823b3cd398
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:00000000f453db40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000000770007f CR3: 00000000464ad000 CR4: 00000000003506e0
----------------
Code disassembly (best guess):
   0:	05 4a c8 5b 0c       	add    $0xc5bc84a,%eax
   5:	89 da                	mov    %ebx,%edx
   7:	81 e2 ff ff 0f 00    	and    $0xfffff,%edx
   d:	4c 8d 3c d0          	lea    (%rax,%rdx,8),%r15
  11:	4d 8b 37             	mov    (%r15),%r14
  14:	4d 85 f6             	test   %r14,%r14
  17:	75 11                	jne    0x2a
  19:	e9 94 00 00 00       	jmpq   0xb2
  1e:	4d 8b 36             	mov    (%r14),%r14
  21:	4d 85 f6             	test   %r14,%r14
  24:	0f 84 88 00 00 00    	je     0xb2
* 2a:	41 39 5e 08          	cmp    %ebx,0x8(%r14) <-- trapping instruction
  2e:	75 ee                	jne    0x1e
  30:	45 3b 66 0c          	cmp    0xc(%r14),%r12d
  34:	75 e8                	jne    0x1e
  36:	31 c0                	xor    %eax,%eax
  38:	49 8b 4c c6 18       	mov    0x18(%r14,%rax,8),%rcx
  3d:	48                   	rex.W
  3e:	39                   	.byte 0x39
  3f:	4c                   	rex.WR

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-386 2021/10/30 22:39 upstream 119c85055d86 098b5d53 .config log report info BUG: unable to handle kernel paging request in stack_depot_save