syzbot


WARNING in do_exit

Status: upstream: reported on 2026/05/02 12:20
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+8fdf0d8e10bdde1c2e88@syzkaller.appspotmail.com
First crash: 17d, last: 17d
✨ AI Jobs (2)
ID Workflow Result Correct Bug Created Started Finished Revision Error
c5f713b5-d254-4f12-a685-9777eb0cd537 assessment-security 💥 WARNING in do_exit 2026/05/15 06:19 2026/05/15 06:19 2026/05/15 06:20 6ccb967e465e832a7bfd7a116ad00d52a0923a5d failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/c5ea796d113e21c33866153444135815c54c0622" "-s" "bzImage" "compile_commands.json"]: exit status 2 * * Restart config... * * * General architecture-dependent options * SMT (Hyperthreading) scheduler support (SCHED_SMT) [Y/?] y Cluster scheduler support (SCHED_CLUSTER) [Y/n/?] y Multi-Core Cache (MC) scheduler support (SCHED_MC) [Y/n/?] y Kprobes (KPROBES) [N/y/?] n Optimize very unlikely/likely branches (JUMP_LABEL) [Y/n/?] y Static key selftest (STATIC_KEYS_SELFTEST) [N/y/?] n Static call selftest (STATIC_CALL_SELFTEST) [N/y/?] n Enable seccomp to safely execute untrusted bytecode (SECCOMP) [Y/n/?] y Show seccomp filter cache status in /proc/pid/seccomp_cache (SECCOMP_CACHE_DEBUG) [N/y/?] n Stack Protector buffer overflow detection (STACKPROTECTOR) [Y/n/?] y Strong Stack Protector (STACKPROTECTOR_STRONG) [Y/n/?] y Link Time Optimization (LTO) > 1. None (LTO_NONE) choice[1]: 1 Enable Clang's AutoFDO build (EXPERIMENTAL) (AUTOFDO_CLANG) [N/y/?] (NEW) Error in reading or end of file. Enable Clang's Propeller build (PROPELLER_CLANG) [N/y/?] (NEW) Error in reading or end of file. Use Kernel Control Flow Integrity (kCFI) (CFI) [N/y/?] (NEW) Error in reading or end of file. Number of bits to use for ASLR of mmap base address (ARCH_MMAP_RND_BITS) [28] 28 Number of bits to use for ASLR of mmap base address for compatible applications (ARCH_MMAP_RND_COMPAT_BITS) [8] 8 MMU page size > 1. 4KiB pages (PAGE_SIZE_4KB) choice[1]: 1 Provide system calls for 32-bit time_t (COMPAT_32BIT_TIME) [Y/n/?] y Use a virtually-mapped stack (VMAP_STACK) [Y/n/?] y Support for randomizing kernel stack offset on syscall entry (RANDOMIZE_KSTACK_OFFSET) [Y/n/?] y Default state of kernel stack offset randomization (RANDOMIZE_KSTACK_OFFSET_DEFAULT) [N/y/?] n Locking event counts collection (LOCK_EVENT_COUNTS) [N/y/?] n * * Memory initialization * Initialize kernel stack variables at function entry 1. no automatic stack variable initialization (weakest) (INIT_STACK_NONE) 2. pattern-init everything (strongest) (INIT_STACK_ALL_PATTERN) > 3. zero-init everything (strongest and safest) (INIT_STACK_ALL_ZERO) choice[1-3?]: 3 Poison kernel stack before returning from syscalls (KSTACK_ERASE) [N/y/?] (NEW) Error in reading or end of file. Enable heap memory zeroing on allocation by default (INIT_ON_ALLOC_DEFAULT_ON) [Y/n/?] y Enable heap memory zeroing on free by default (INIT_ON_FREE_DEFAULT_ON) [N/y/?] n Enable register zeroing on function exit (ZERO_CALL_USED_REGS) [N/y/?] n * * Kernel hardening options * Randomize layout of sensitive kernel structures > 1. Disable structure layout randomization (RANDSTRUCT_NONE) 2. Fully randomize structure layout (RANDSTRUCT_FULL) (NEW) choice[1-2?]: Error in reading or end of file. /app/workdir/cache/src/a580385dbb8ecf5336c33a3bd089ab5ead1252dc/lib/maple_tree.c:3514:20: warning: stack frame size (2424) exceeds limit (2048) in 'mas_wr_store_entry' [-Wframe-larger-than] 3514 | static inline void mas_wr_store_entry(struct ma_wr_state *wr_mas) | ^ 1 warning generated. /app/workdir/cache/src/a580385dbb8ecf5336c33a3bd089ab5ead1252dc/sound/usb/mixer_s1810c.c:634:5: warning: stack frame size (2360) exceeds limit (2048) in 'snd_sc1810_init_mixer' [-Wframe-larger-than] 634 | int snd_sc1810_init_mixer(struct usb_mixer_interface *mixer) | ^ 1 warning generated. ar: sound/pcmcia/built-in.a: No space left on device make[5]: *** [/app/workdir/cache/src/a580385dbb8ecf5336c33a3bd089ab5ead1252dc/scripts/Makefile.build:477: sound/pcmcia/built-in.a] Error 123 fixdep: not all data was written to the output make[4]: *** [/app/workdir/cache/src/a580385dbb8ecf5336c33a3bd089ab5ead1252dc/scripts/Makefile.build:548: sound/pcmcia] Error 2 make[4]: *** Waiting for unfinished jobs.... make[4]: *** [/app/workdir/cache/src/a580385dbb8ecf5336c33a3bd089ab5ead1252dc/scripts/Makefile.build:289: kernel/smpboot.o] Error 1 make
983237b2-e725-40eb-a3a4-d5cdf85c59ba assessment-security 💥 WARNING in do_exit 2026/05/07 04:58 2026/05/07 07:13 2026/05/07 08:27 f250db59430dfb0102692e53ab92e84e82178c3e Error 503, Message: This model is currently experiencing high demand. Spikes in demand are usually temporary. Please try again later., Status: UNAVAILABLE, Details: []
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [kernel?] WARNING in do_exit 0 (1) 2026/05/02 12:20

Sample crash report:
WARNING: kernel/signal.c:2174 at do_notify_parent+0xea8/0x10b0 kernel/signal.c:2174, CPU#2: syz.2.2072/13056
Kernel panic - n�o�t sync�i�n�g�:� �k�e�r�n�e�l�:� �panic_on_warn set ...
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 check_panic_on_warn kernel/panic.c:524 [inline]
 check_panic_on_warn.cold+0x19/0x34 kernel/panic.c:519
 __warn.cold+0x191/0x328 kernel/panic.c:1103
 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:616
RSP: 0018:ffffc9000f407aa8 EFLAGS: 00010093
RDX: ffff88805386ca00 RSI: ffffffff81caad07 RDI: ffff88805386ca00
R10: 0000000000000080 R11: 0000000000000000 R12: 1ffff92001e80f58
 exit_notify kernel/exit.c:757 [inline]
 do_exit+0x1b05/0x2a60 kernel/exit.c:987
 get_signal+0x1ec7/0x21e0 kernel/signal.c:3037
 asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:612
RSP: 002b:00002000000001e0 EFLAGS: 00010217
R13: 00007fcbfe616038 R14: 00007fcbfe615fa0 R15: 00007ffd58e78548
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/04/28 12:09 upstream 3b3bea6d4b9c 340bcdf0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in do_exit
* Struck through repros no longer work on HEAD.