syzbot


BUG: unable to handle kernel paging request in txBeginAnon

Status: upstream: reported C repro on 2024/05/24 21:06
Subsystems: jfs
[Documentation on labels]
Reported-by: syzbot+4e89b5368baba8324e07@syzkaller.appspotmail.com
Fix commit: b5799dd77054 jfs: add check read-only before truncation in jfs_truncate_nolock() 0176e69743ec jfs: add check read-only before txBeginAnon() call
Patched on: [ci-qemu-gce-upstream-auto ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-snapshot-upstream-root ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-arm64 ci-upstream-gce-leak ci-upstream-kasan-badwrites-root ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce-386-root ci-upstream-kmsan-gce-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-fs ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu-native-arm64-kvm ci-qemu2-arm32 ci-qemu2-riscv64]
First crash: 334d, last: 41d
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: general protection fault in txBeginAnon (log)
Repro: C syz .config
  
Discussions (3)
Title Replies (including bot) Last reply
[PATCH 0/2] jfs: add checks read-only to prevent NULL pointer deref 2 (2) 2024/12/24 14:49
[PATCH 1/2] jfs: add check read-only before txBeginAnon() call 1 (1) 2024/12/24 14:49
[syzbot] [jfs?] BUG: unable to handle kernel paging request in txBeginAnon 0 (1) 2024/05/24 21:06
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 BUG: unable to handle kernel paging request in txBeginAnon origin:upstream C error 4 21d 105d 0/3 upstream: reported C repro on 2025/01/04 14:54
linux-6.1 BUG: unable to handle kernel paging request in txBeginAnon origin:upstream C error 4 84d 126d 0/3 upstream: reported C repro on 2024/12/14 17:41
Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/02/11 01:16 14m retest repro upstream report log
2025/02/11 01:16 13m retest repro upstream report log
2025/01/27 06:41 21m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2025/01/27 06:41 21m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2024/10/22 16:26 22m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2024/10/15 06:00 0m retest repro upstream error
2024/09/08 11:47 19m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2024/08/13 13:19 27m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2024/06/30 11:24 18m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2024/06/04 07:37 18m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log

Sample crash report:
 ... Log Wrap ... Log Wrap ... Log Wrap ...
 ... Log Wrap ... Log Wrap ... Log Wrap ...
jfs_dirty_inode called on read-only volume
Is remount racy?
Unable to handle kernel paging request at virtual address dfff800000000008
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[dfff800000000008] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 6247 Comm: syz-executor229 Tainted: G        W          6.10.0-rc3-syzkaller-gac2193b4b460 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : generic_test_bit include/asm-generic/bitops/generic-non-atomic.h:128 [inline]
pc : txBeginAnon+0xac/0x154 fs/jfs/jfs_txnmgr.c:465
lr : spin_lock include/linux/spinlock.h:351 [inline]
lr : txBeginAnon+0x78/0x154 fs/jfs/jfs_txnmgr.c:458
sp : ffff8000994471c0
x29: ffff8000994471c0 x28: ffff80009398d508 x27: ffff80009398d000
x26: ffff80009398d000 x25: 0000000000000008 x24: 0000000000000150
x23: dfff800000000000 x22: 0000000000000001 x21: 0000000000000000
x20: 0000000000000040 x19: ffff80008f577d80 x18: ffff800099446e80
x17: 000000000000d288 x16: ffff800080350d3c x15: ffff700013288e20
x14: 1ffff00013288e20 x13: 0000000000000004 x12: ffffffffffffffff
x11: ffff700013288e20 x10: 1ffff00013288e20 x9 : b37f4c3d59063b00
x8 : b37f4c3d59063b00 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff800080350e64
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000001
Call trace:
 txBeginAnon+0xac/0x154
 extAlloc+0xe8/0xdec fs/jfs/jfs_extent.c:78
 jfs_get_block+0x340/0xb98 fs/jfs/inode.c:248
 __block_write_begin_int+0x580/0x166c fs/buffer.c:2128
 __block_write_begin fs/buffer.c:2177 [inline]
 block_write_begin+0x98/0x11c fs/buffer.c:2236
 jfs_write_begin+0x44/0x88 fs/jfs/inode.c:299
 generic_perform_write+0x28c/0x588 mm/filemap.c:4015
 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4110
 generic_file_write_iter+0xb8/0x2b4 mm/filemap.c:4136
 do_iter_readv_writev+0x438/0x658
 vfs_writev+0x410/0xb80 fs/read_write.c:971
 do_pwritev fs/read_write.c:1072 [inline]
 __do_sys_pwritev2 fs/read_write.c:1131 [inline]
 __se_sys_pwritev2 fs/read_write.c:1122 [inline]
 __arm64_sys_pwritev2+0x1dc/0x2f0 fs/read_write.c:1122
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
Code: aa1803e0 97ffff65 aa1303e0 9591dbed (38776b28) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa1803e0 	mov	x0, x24
   4:	97ffff65 	bl	0xfffffffffffffd98
   8:	aa1303e0 	mov	x0, x19
   c:	9591dbed 	bl	0x6476fc0
* 10:	38776b28 	ldrb	w8, [x25, x23] <-- trapping instruction

Crashes (43):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/16 09:07 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ac2193b4b460 f429ab00 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in txBeginAnon
2024/05/20 21:42 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fda5695d692c c0f1611a .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in txBeginAnon
2025/01/13 06:20 upstream be548645527a 6dbc6a9b .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/09/25 05:38 upstream 97d8894b6f4c 5643e0e9 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2025/01/01 21:30 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 573067a5a685 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in txBeginAnon
2024/12/27 11:05 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 573067a5a685 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in txBeginAnon
2024/12/22 01:28 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 573067a5a685 d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in txBeginAnon
2024/12/21 21:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 573067a5a685 d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in txBeginAnon
2024/12/15 03:10 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2e7aff49b5da 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in txBeginAnon
2024/12/07 10:31 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7b1d1d4cfac0 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in txBeginAnon
2024/11/25 09:46 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7b1d1d4cfac0 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in txBeginAnon
2024/11/23 17:24 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7b1d1d4cfac0 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in txBeginAnon
2024/05/20 21:04 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fda5695d692c c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in txBeginAnon
2024/12/31 03:11 upstream ccb98ccef0e5 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/12/29 04:39 upstream 059dd502b263 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/12/28 03:04 upstream 8379578b11d5 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/12/26 19:11 upstream 9b2ffa6148b1 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/12/26 08:04 upstream 9b2ffa6148b1 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/12/26 04:07 upstream 9b2ffa6148b1 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/12/25 14:26 upstream 9b2ffa6148b1 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/12/23 12:46 upstream 4bbf9020becb b4fbdbd4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/12/22 18:46 upstream bcde95ce32b6 b4fbdbd4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/12/06 02:41 upstream 5076001689e4 29f61fce .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/12/03 22:27 upstream ceb8bf2ceaa7 b50eb251 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/11/27 12:54 upstream 798bb342e041 52b38cc1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/09/30 20:48 upstream 9852d85ec9d4 bbd4e0a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/09/25 04:49 upstream 97d8894b6f4c 5643e0e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2024/09/11 16:22 upstream 8d8d276ba2fb 8ab55d0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: null-ptr-deref Read in txBeginAnon
2025/03/10 06:45 upstream 80e54e84911a 163f510d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2025/02/25 10:37 upstream d082ecbc71e9 d34966d1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2025/01/27 16:04 upstream c2da8b3f914f d99a33ad .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2024/12/27 00:15 upstream d6ef8b40d075 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2024/12/21 17:01 upstream 499551201b5f d7f584ee .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2024/12/10 23:02 upstream 7cb1b4663150 cfc402b4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2024/12/01 21:19 upstream bcc8eda6d349 68914665 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2024/11/16 09:25 upstream f868cd251776 cfe3a04a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2024/11/08 16:19 upstream 906bd684e4b1 d40c056e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2024/11/07 03:08 upstream 7758b206117d df3dc63b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2024/11/06 07:13 upstream 2e1b3cc9d7f7 3a465482 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2024/10/30 20:34 upstream c1e939a21eb1 f3a00767 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2024/09/11 17:06 upstream 8d8d276ba2fb ede7a22c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2024/08/17 10:16 upstream e5fa841af679 e1c76ab2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
2024/08/17 09:50 upstream e5fa841af679 e1c76ab2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: null-ptr-deref Read in txBeginAnon
* Struck through repros no longer work on HEAD.